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0
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1 /* Storage allocation and gc for XEmacs Lisp interpreter.
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272
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2 Copyright (C) 1985-1998 Free Software Foundation, Inc.
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0
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4 Copyright (C) 1995, 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: FSF 19.28, Mule 2.0. Substantially different from
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24 FSF. */
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25
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26 /* Authorship:
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27
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28 FSF: Original version; a long time ago.
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29 Mly: Significantly rewritten to use new 3-bit tags and
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30 nicely abstracted object definitions, for 19.8.
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31 JWZ: Improved code to keep track of purespace usage and
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32 issue nice purespace and GC stats.
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33 Ben Wing: Cleaned up frob-block lrecord code, added error-checking
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34 and various changes for Mule, for 19.12.
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35 Added bit vectors for 19.13.
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36 Added lcrecord lists for 19.14.
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255
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37 slb: Lots of work on the purification and dump time code.
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38 Synched Doug Lea malloc support from Emacs 20.2.
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0
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39 */
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40
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41 #include <config.h>
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42 #include "lisp.h"
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43
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44 #include "backtrace.h"
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45 #include "buffer.h"
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46 #include "bytecode.h"
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70
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47 #include "chartab.h"
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0
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48 #include "device.h"
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49 #include "elhash.h"
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50 #include "events.h"
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51 #include "extents.h"
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52 #include "frame.h"
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53 #include "glyphs.h"
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380
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54 #include "opaque.h"
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0
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55 #include "redisplay.h"
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56 #include "specifier.h"
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272
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57 #include "sysfile.h"
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0
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58 #include "window.h"
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59
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375
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60 #include <stddef.h>
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61
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255
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62 #ifdef DOUG_LEA_MALLOC
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63 #include <malloc.h>
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64 #endif
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65
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272
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66 EXFUN (Fgarbage_collect, 0);
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67
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382
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68 /* Return the true size of a struct with a variable-length array field. */
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69 #define STRETCHY_STRUCT_SIZEOF(stretchy_struct_type, \
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70 stretchy_array_field, \
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71 stretchy_array_length) \
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72 (offsetof (stretchy_struct_type, stretchy_array_field) + \
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73 (offsetof (stretchy_struct_type, stretchy_array_field[1]) - \
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74 offsetof (stretchy_struct_type, stretchy_array_field[0])) * \
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75 (stretchy_array_length))
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0
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76
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255
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77 #if 0 /* this is _way_ too slow to be part of the standard debug options */
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78 #if defined(DEBUG_XEMACS) && defined(MULE)
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79 #define VERIFY_STRING_CHARS_INTEGRITY
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80 #endif
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81 #endif
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0
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82
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83 /* Define this to see where all that space is going... */
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207
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84 /* But the length of the printout is obnoxious, so limit it to testers */
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380
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85 #ifdef MEMORY_USAGE_STATS
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0
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86 #define PURESTAT
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207
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87 #endif
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0
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88
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89 /* Define this to use malloc/free with no freelist for all datatypes,
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90 the hope being that some debugging tools may help detect
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91 freed memory references */
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177
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92 #ifdef USE_DEBUG_MALLOC /* Taking the above comment at face value -slb */
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93 #include <dmalloc.h>
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94 #define ALLOC_NO_POOLS
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95 #endif
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0
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96
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97 #include "puresize.h"
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98
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99 #ifdef DEBUG_XEMACS
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380
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100 static int debug_allocation;
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101 static int debug_allocation_backtrace_length;
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0
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102 #endif
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103
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104 /* Number of bytes of consing done since the last gc */
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105 EMACS_INT consing_since_gc;
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106 #define INCREMENT_CONS_COUNTER_1(size) (consing_since_gc += (size))
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107
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108 #define debug_allocation_backtrace() \
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109 do { \
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110 if (debug_allocation_backtrace_length > 0) \
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111 debug_short_backtrace (debug_allocation_backtrace_length); \
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112 } while (0)
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113
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114 #ifdef DEBUG_XEMACS
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115 #define INCREMENT_CONS_COUNTER(foosize, type) \
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116 do { \
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117 if (debug_allocation) \
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118 { \
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119 stderr_out ("allocating %s (size %ld)\n", type, (long)foosize); \
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120 debug_allocation_backtrace (); \
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121 } \
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122 INCREMENT_CONS_COUNTER_1 (foosize); \
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123 } while (0)
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124 #define NOSEEUM_INCREMENT_CONS_COUNTER(foosize, type) \
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125 do { \
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126 if (debug_allocation > 1) \
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127 { \
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128 stderr_out ("allocating noseeum %s (size %ld)\n", type, (long)foosize); \
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129 debug_allocation_backtrace (); \
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130 } \
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131 INCREMENT_CONS_COUNTER_1 (foosize); \
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132 } while (0)
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133 #else
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134 #define INCREMENT_CONS_COUNTER(size, type) INCREMENT_CONS_COUNTER_1 (size)
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135 #define NOSEEUM_INCREMENT_CONS_COUNTER(size, type) \
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136 INCREMENT_CONS_COUNTER_1 (size)
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137 #endif
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138
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380
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139 #define DECREMENT_CONS_COUNTER(size) do { \
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140 consing_since_gc -= (size); \
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141 if (consing_since_gc < 0) \
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142 consing_since_gc = 0; \
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143 } while (0)
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0
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144
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145 /* Number of bytes of consing since gc before another gc should be done. */
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146 EMACS_INT gc_cons_threshold;
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147
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148 /* Nonzero during gc */
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149 int gc_in_progress;
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150
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151 /* Number of times GC has happened at this level or below.
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152 * Level 0 is most volatile, contrary to usual convention.
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153 * (Of course, there's only one level at present) */
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154 EMACS_INT gc_generation_number[1];
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155
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|
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156 /* This is just for use by the printer, to allow things to print uniquely */
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157 static int lrecord_uid_counter;
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158
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159 /* Nonzero when calling certain hooks or doing other things where
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160 a GC would be bad */
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161 int gc_currently_forbidden;
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162
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163 /* Hooks. */
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164 Lisp_Object Vpre_gc_hook, Qpre_gc_hook;
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165 Lisp_Object Vpost_gc_hook, Qpost_gc_hook;
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166
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167 /* "Garbage collecting" */
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168 Lisp_Object Vgc_message;
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169 Lisp_Object Vgc_pointer_glyph;
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170 static CONST char gc_default_message[] = "Garbage collecting";
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171 Lisp_Object Qgarbage_collecting;
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172
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173 #ifndef VIRT_ADDR_VARIES
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174 extern
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175 #endif /* VIRT_ADDR_VARIES */
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176 EMACS_INT malloc_sbrk_used;
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177
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|
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178 #ifndef VIRT_ADDR_VARIES
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179 extern
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180 #endif /* VIRT_ADDR_VARIES */
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181 EMACS_INT malloc_sbrk_unused;
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182
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183 /* Non-zero means defun should do purecopy on the function definition */
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184 int purify_flag;
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185
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251
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186 #ifdef HEAP_IN_DATA
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187 extern void sheap_adjust_h();
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188 #endif
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189
|
|
380
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190 /* Force linker to put it into data space! */
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191 EMACS_INT pure[PURESIZE / sizeof (EMACS_INT)] = { (EMACS_INT) 0};
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192
|
|
272
|
193 #define PUREBEG ((char *) pure)
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0
|
194
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255
|
195 #if 0 /* This is breathing_space in XEmacs */
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196 /* Points to memory space allocated as "spare",
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197 to be freed if we run out of memory. */
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198 static char *spare_memory;
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199
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200 /* Amount of spare memory to keep in reserve. */
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201 #define SPARE_MEMORY (1 << 14)
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202 #endif
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203
|
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0
|
204 /* Index in pure at which next pure object will be allocated. */
|
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272
|
205 static size_t pure_bytes_used;
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206
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207 #define PURIFIED(ptr) \
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208 ((char *) (ptr) >= PUREBEG && \
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209 (char *) (ptr) < PUREBEG + get_PURESIZE())
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210
|
|
380
|
211 /* Non-zero if pure_bytes_used > get_PURESIZE();
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212 accounts for excess purespace needs. */
|
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272
|
213 static size_t pure_lossage;
|
|
0
|
214
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|
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215 #ifdef ERROR_CHECK_TYPECHECK
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216
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|
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217 Error_behavior ERROR_ME, ERROR_ME_NOT, ERROR_ME_WARN;
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218
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|
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219 #endif
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220
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221 int
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222 purified (Lisp_Object obj)
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223 {
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272
|
224 return POINTER_TYPE_P (XGCTYPE (obj)) && PURIFIED (XPNTR (obj));
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|
0
|
225 }
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|
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226
|
|
272
|
227 size_t
|
|
0
|
228 purespace_usage (void)
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|
|
229 {
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|
272
|
230 return pure_bytes_used;
|
|
0
|
231 }
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232
|
|
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233 static int
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272
|
234 check_purespace (size_t size)
|
|
0
|
235 {
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|
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236 if (pure_lossage)
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|
|
237 {
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|
|
238 pure_lossage += size;
|
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173
|
239 return 0;
|
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0
|
240 }
|
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272
|
241 else if (pure_bytes_used + size > get_PURESIZE())
|
|
0
|
242 {
|
|
104
|
243 /* This can cause recursive bad behavior, we'll yell at the end */
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|
244 /* when we're done. */
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245 /* message ("\nERROR: Pure Lisp storage exhausted!\n"); */
|
|
0
|
246 pure_lossage = size;
|
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173
|
247 return 0;
|
|
0
|
248 }
|
|
|
249 else
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173
|
250 return 1;
|
|
0
|
251 }
|
|
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252
|
|
|
253
|
|
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254
|
|
|
255 #ifndef PURESTAT
|
|
|
256
|
|
272
|
257 #define bump_purestat(p,b) DO_NOTHING
|
|
0
|
258
|
|
|
259 #else /* PURESTAT */
|
|
|
260
|
|
380
|
261 static int purecopying_function_constants;
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|
|
262
|
|
|
263 static size_t pure_sizeof (Lisp_Object);
|
|
0
|
264
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|
|
265 /* Keep statistics on how much of what is in purespace */
|
|
183
|
266 static struct purestat
|
|
0
|
267 {
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|
|
268 int nobjects;
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|
|
269 int nbytes;
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|
|
270 CONST char *name;
|
|
183
|
271 }
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|
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272 purestat_cons = {0, 0, "cons cells"},
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|
273 purestat_float = {0, 0, "float objects"},
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|
|
274 purestat_string_pname = {0, 0, "symbol-name strings"},
|
|
380
|
275 purestat_function = {0, 0, "compiled-function objects"},
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|
276 purestat_opaque_instructions = {0, 0, "compiled-function instructions"},
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|
277 purestat_vector_constants = {0, 0, "compiled-function constants vectors"},
|
|
183
|
278 purestat_string_interactive = {0, 0, "interactive strings"},
|
|
0
|
279 #ifdef I18N3
|
|
183
|
280 purestat_string_domain = {0, 0, "domain strings"},
|
|
0
|
281 #endif
|
|
183
|
282 purestat_string_documentation = {0, 0, "documentation strings"},
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|
|
283 purestat_string_other_function = {0, 0, "other function strings"},
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|
|
284 purestat_vector_other = {0, 0, "other vectors"},
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|
|
285 purestat_string_other = {0, 0, "other strings"},
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|
|
286 purestat_string_all = {0, 0, "all strings"},
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|
|
287 purestat_vector_all = {0, 0, "all vectors"};
|
|
0
|
288
|
|
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289 static void
|
|
272
|
290 bump_purestat (struct purestat *purestat, size_t nbytes)
|
|
0
|
291 {
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|
|
292 if (pure_lossage) return;
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|
|
293 purestat->nobjects += 1;
|
|
|
294 purestat->nbytes += nbytes;
|
|
|
295 }
|
|
380
|
296
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|
|
297 static void
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|
|
298 print_purestat (struct purestat *purestat)
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|
|
299 {
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|
|
300 char buf [100];
|
|
|
301 sprintf(buf, "%s:", purestat->name);
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|
|
302 message (" %-36s %5d %7d %2d%%",
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|
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303 buf,
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|
|
304 purestat->nobjects,
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|
|
305 purestat->nbytes,
|
|
|
306 (int) (purestat->nbytes / (pure_bytes_used / 100.0) + 0.5));
|
|
|
307 }
|
|
0
|
308 #endif /* PURESTAT */
|
|
|
309
|
|
|
310
|
|
|
311 /* Maximum amount of C stack to save when a GC happens. */
|
|
|
312
|
|
|
313 #ifndef MAX_SAVE_STACK
|
|
380
|
314 #define MAX_SAVE_STACK 0 /* 16000 */
|
|
0
|
315 #endif
|
|
|
316
|
|
|
317 /* Non-zero means ignore malloc warnings. Set during initialization. */
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|
|
318 int ignore_malloc_warnings;
|
|
|
319
|
|
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320
|
|
|
321 static void *breathing_space;
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|
|
322
|
|
|
323 void
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|
|
324 release_breathing_space (void)
|
|
|
325 {
|
|
183
|
326 if (breathing_space)
|
|
0
|
327 {
|
|
|
328 void *tmp = breathing_space;
|
|
|
329 breathing_space = 0;
|
|
|
330 xfree (tmp);
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|
|
331 }
|
|
|
332 }
|
|
|
333
|
|
|
334 /* malloc calls this if it finds we are near exhausting storage */
|
|
|
335 void
|
|
|
336 malloc_warning (CONST char *str)
|
|
|
337 {
|
|
|
338 if (ignore_malloc_warnings)
|
|
|
339 return;
|
|
|
340
|
|
|
341 warn_when_safe
|
|
|
342 (Qmemory, Qcritical,
|
|
|
343 "%s\n"
|
|
|
344 "Killing some buffers may delay running out of memory.\n"
|
|
|
345 "However, certainly by the time you receive the 95%% warning,\n"
|
|
|
346 "you should clean up, kill this Emacs, and start a new one.",
|
|
|
347 str);
|
|
|
348 }
|
|
|
349
|
|
|
350 /* Called if malloc returns zero */
|
|
|
351 DOESNT_RETURN
|
|
|
352 memory_full (void)
|
|
|
353 {
|
|
|
354 /* Force a GC next time eval is called.
|
|
|
355 It's better to loop garbage-collecting (we might reclaim enough
|
|
|
356 to win) than to loop beeping and barfing "Memory exhausted"
|
|
|
357 */
|
|
|
358 consing_since_gc = gc_cons_threshold + 1;
|
|
|
359 release_breathing_space ();
|
|
|
360
|
|
278
|
361 /* Flush some histories which might conceivably contain garbalogical
|
|
|
362 inhibitors. */
|
|
0
|
363 if (!NILP (Fboundp (Qvalues)))
|
|
|
364 Fset (Qvalues, Qnil);
|
|
|
365 Vcommand_history = Qnil;
|
|
|
366
|
|
|
367 error ("Memory exhausted");
|
|
|
368 }
|
|
|
369
|
|
|
370 /* like malloc and realloc but check for no memory left, and block input. */
|
|
|
371
|
|
177
|
372 #ifdef xmalloc
|
|
|
373 #undef xmalloc
|
|
|
374 #endif
|
|
|
375
|
|
0
|
376 void *
|
|
185
|
377 xmalloc (size_t size)
|
|
0
|
378 {
|
|
386
|
379 void *val = malloc (size);
|
|
0
|
380
|
|
|
381 if (!val && (size != 0)) memory_full ();
|
|
|
382 return val;
|
|
|
383 }
|
|
|
384
|
|
380
|
385 static void *
|
|
|
386 xcalloc (size_t nelem, size_t elsize)
|
|
|
387 {
|
|
386
|
388 void *val = calloc (nelem, elsize);
|
|
380
|
389
|
|
|
390 if (!val && (nelem != 0)) memory_full ();
|
|
|
391 return val;
|
|
|
392 }
|
|
|
393
|
|
0
|
394 void *
|
|
185
|
395 xmalloc_and_zero (size_t size)
|
|
0
|
396 {
|
|
380
|
397 return xcalloc (size, sizeof (char));
|
|
0
|
398 }
|
|
|
399
|
|
177
|
400 #ifdef xrealloc
|
|
|
401 #undef xrealloc
|
|
|
402 #endif
|
|
|
403
|
|
0
|
404 void *
|
|
185
|
405 xrealloc (void *block, size_t size)
|
|
0
|
406 {
|
|
|
407 /* We must call malloc explicitly when BLOCK is 0, since some
|
|
|
408 reallocs don't do this. */
|
|
386
|
409 void *val = block ? realloc (block, size) : malloc (size);
|
|
0
|
410
|
|
|
411 if (!val && (size != 0)) memory_full ();
|
|
|
412 return val;
|
|
|
413 }
|
|
|
414
|
|
|
415 void
|
|
|
416 #ifdef ERROR_CHECK_MALLOC
|
|
|
417 xfree_1 (void *block)
|
|
|
418 #else
|
|
|
419 xfree (void *block)
|
|
|
420 #endif
|
|
|
421 {
|
|
|
422 #ifdef ERROR_CHECK_MALLOC
|
|
|
423 /* Unbelievably, calling free() on 0xDEADBEEF doesn't cause an
|
|
|
424 error until much later on for many system mallocs, such as
|
|
|
425 the one that comes with Solaris 2.3. FMH!! */
|
|
|
426 assert (block != (void *) 0xDEADBEEF);
|
|
|
427 assert (block);
|
|
183
|
428 #endif /* ERROR_CHECK_MALLOC */
|
|
0
|
429 free (block);
|
|
|
430 }
|
|
|
431
|
|
272
|
432 #ifdef ERROR_CHECK_GC
|
|
|
433
|
|
|
434 #if SIZEOF_INT == 4
|
|
|
435 typedef unsigned int four_byte_t;
|
|
|
436 #elif SIZEOF_LONG == 4
|
|
|
437 typedef unsigned long four_byte_t;
|
|
|
438 #elif SIZEOF_SHORT == 4
|
|
|
439 typedef unsigned short four_byte_t;
|
|
0
|
440 #else
|
|
|
441 What kind of strange-ass system are we running on?
|
|
|
442 #endif
|
|
|
443
|
|
|
444 static void
|
|
272
|
445 deadbeef_memory (void *ptr, size_t size)
|
|
0
|
446 {
|
|
272
|
447 four_byte_t *ptr4 = (four_byte_t *) ptr;
|
|
|
448 size_t beefs = size >> 2;
|
|
|
449
|
|
|
450 /* In practice, size will always be a multiple of four. */
|
|
|
451 while (beefs--)
|
|
|
452 (*ptr4++) = 0xDEADBEEF;
|
|
0
|
453 }
|
|
|
454
|
|
183
|
455 #else /* !ERROR_CHECK_GC */
|
|
|
456
|
|
0
|
457
|
|
|
458 #define deadbeef_memory(ptr, size)
|
|
|
459
|
|
183
|
460 #endif /* !ERROR_CHECK_GC */
|
|
0
|
461
|
|
177
|
462 #ifdef xstrdup
|
|
|
463 #undef xstrdup
|
|
|
464 #endif
|
|
|
465
|
|
0
|
466 char *
|
|
|
467 xstrdup (CONST char *str)
|
|
|
468 {
|
|
|
469 int len = strlen (str) + 1; /* for stupid terminating 0 */
|
|
|
470
|
|
185
|
471 void *val = xmalloc (len);
|
|
0
|
472 if (val == 0) return 0;
|
|
|
473 memcpy (val, str, len);
|
|
185
|
474 return (char *) val;
|
|
0
|
475 }
|
|
|
476
|
|
|
477 #ifdef NEED_STRDUP
|
|
|
478 char *
|
|
|
479 strdup (CONST char *s)
|
|
|
480 {
|
|
|
481 return xstrdup (s);
|
|
|
482 }
|
|
|
483 #endif /* NEED_STRDUP */
|
|
|
484
|
|
|
485
|
|
|
486 static void *
|
|
272
|
487 allocate_lisp_storage (size_t size)
|
|
0
|
488 {
|
|
|
489 void *p = xmalloc (size);
|
|
272
|
490 #ifndef USE_MINIMAL_TAGBITS
|
|
0
|
491 char *lim = ((char *) p) + size;
|
|
272
|
492 Lisp_Object val;
|
|
0
|
493
|
|
207
|
494 XSETOBJ (val, Lisp_Type_Record, lim);
|
|
|
495 if ((char *) XPNTR (val) != lim)
|
|
0
|
496 {
|
|
|
497 xfree (p);
|
|
|
498 memory_full ();
|
|
|
499 }
|
|
272
|
500 #endif /* ! USE_MINIMAL_TAGBITS */
|
|
173
|
501 return p;
|
|
0
|
502 }
|
|
|
503
|
|
|
504
|
|
|
505 /* lrecords are chained together through their "next.v" field.
|
|
|
506 * After doing the mark phase, the GC will walk this linked
|
|
272
|
507 * list and free any record which hasn't been marked.
|
|
0
|
508 */
|
|
|
509 static struct lcrecord_header *all_lcrecords;
|
|
|
510
|
|
|
511 void *
|
|
272
|
512 alloc_lcrecord (size_t size, CONST struct lrecord_implementation *implementation)
|
|
0
|
513 {
|
|
|
514 struct lcrecord_header *lcheader;
|
|
|
515
|
|
380
|
516 #ifdef ERROR_CHECK_GC
|
|
0
|
517 if (implementation->static_size == 0)
|
|
380
|
518 assert (implementation->size_in_bytes_method);
|
|
|
519 else
|
|
|
520 assert (implementation->static_size == size);
|
|
|
521 #endif
|
|
0
|
522
|
|
185
|
523 lcheader = (struct lcrecord_header *) allocate_lisp_storage (size);
|
|
380
|
524 set_lheader_implementation (&(lcheader->lheader), implementation);
|
|
0
|
525 lcheader->next = all_lcrecords;
|
|
|
526 #if 1 /* mly prefers to see small ID numbers */
|
|
|
527 lcheader->uid = lrecord_uid_counter++;
|
|
|
528 #else /* jwz prefers to see real addrs */
|
|
|
529 lcheader->uid = (int) &lcheader;
|
|
|
530 #endif
|
|
|
531 lcheader->free = 0;
|
|
|
532 all_lcrecords = lcheader;
|
|
|
533 INCREMENT_CONS_COUNTER (size, implementation->name);
|
|
173
|
534 return lcheader;
|
|
0
|
535 }
|
|
|
536
|
|
|
537 #if 0 /* Presently unused */
|
|
|
538 /* Very, very poor man's EGC?
|
|
|
539 * This may be slow and thrash pages all over the place.
|
|
|
540 * Only call it if you really feel you must (and if the
|
|
|
541 * lrecord was fairly recently allocated).
|
|
|
542 * Otherwise, just let the GC do its job -- that's what it's there for
|
|
|
543 */
|
|
|
544 void
|
|
|
545 free_lcrecord (struct lcrecord_header *lcrecord)
|
|
|
546 {
|
|
|
547 if (all_lcrecords == lcrecord)
|
|
|
548 {
|
|
|
549 all_lcrecords = lcrecord->next;
|
|
|
550 }
|
|
|
551 else
|
|
|
552 {
|
|
|
553 struct lrecord_header *header = all_lcrecords;
|
|
|
554 for (;;)
|
|
|
555 {
|
|
|
556 struct lrecord_header *next = header->next;
|
|
|
557 if (next == lcrecord)
|
|
|
558 {
|
|
|
559 header->next = lrecord->next;
|
|
|
560 break;
|
|
|
561 }
|
|
|
562 else if (next == 0)
|
|
|
563 abort ();
|
|
|
564 else
|
|
|
565 header = next;
|
|
|
566 }
|
|
|
567 }
|
|
|
568 if (lrecord->implementation->finalizer)
|
|
380
|
569 lrecord->implementation->finalizer (lrecord, 0);
|
|
0
|
570 xfree (lrecord);
|
|
|
571 return;
|
|
|
572 }
|
|
|
573 #endif /* Unused */
|
|
|
574
|
|
|
575
|
|
|
576 static void
|
|
|
577 disksave_object_finalization_1 (void)
|
|
|
578 {
|
|
|
579 struct lcrecord_header *header;
|
|
|
580
|
|
|
581 for (header = all_lcrecords; header; header = header->next)
|
|
|
582 {
|
|
211
|
583 if (LHEADER_IMPLEMENTATION(&header->lheader)->finalizer &&
|
|
|
584 !header->free)
|
|
|
585 ((LHEADER_IMPLEMENTATION(&header->lheader)->finalizer)
|
|
|
586 (header, 1));
|
|
0
|
587 }
|
|
|
588 }
|
|
183
|
589
|
|
0
|
590
|
|
|
591 /* This must not be called -- it just serves as for EQ test
|
|
|
592 * If lheader->implementation->finalizer is this_marks_a_marked_record,
|
|
|
593 * then lrecord has been marked by the GC sweeper
|
|
|
594 * header->implementation is put back to its correct value by
|
|
|
595 * sweep_records */
|
|
|
596 void
|
|
|
597 this_marks_a_marked_record (void *dummy0, int dummy1)
|
|
|
598 {
|
|
|
599 abort ();
|
|
|
600 }
|
|
|
601
|
|
|
602 /* Semi-kludge -- lrecord_symbol_value_forward objects get stuck
|
|
|
603 in CONST space and you get SEGV's if you attempt to mark them.
|
|
|
604 This sits in lheader->implementation->marker. */
|
|
|
605
|
|
|
606 Lisp_Object
|
|
|
607 this_one_is_unmarkable (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
|
608 {
|
|
|
609 abort ();
|
|
|
610 return Qnil;
|
|
|
611 }
|
|
|
612
|
|
|
613 /* XGCTYPE for records */
|
|
|
614 int
|
|
|
615 gc_record_type_p (Lisp_Object frob, CONST struct lrecord_implementation *type)
|
|
|
616 {
|
|
272
|
617 CONST struct lrecord_implementation *imp;
|
|
|
618
|
|
|
619 if (XGCTYPE (frob) != Lisp_Type_Record)
|
|
|
620 return 0;
|
|
|
621
|
|
|
622 imp = XRECORD_LHEADER_IMPLEMENTATION (frob);
|
|
211
|
623 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
272
|
624 return imp == type;
|
|
211
|
625 #else
|
|
272
|
626 return imp == type || imp == type + 1;
|
|
211
|
627 #endif
|
|
0
|
628 }
|
|
|
629
|
|
|
630
|
|
380
|
631 /************************************************************************/
|
|
|
632 /* Debugger support */
|
|
|
633 /************************************************************************/
|
|
371
|
634 /* Give gdb/dbx enough information to decode Lisp Objects.
|
|
|
635 We make sure certain symbols are defined, so gdb doesn't complain
|
|
|
636 about expressions in src/gdbinit. Values are randomly chosen.
|
|
|
637 See src/gdbinit or src/dbxrc to see how this is used. */
|
|
|
638
|
|
|
639 enum dbg_constants
|
|
|
640 {
|
|
272
|
641 #ifdef USE_MINIMAL_TAGBITS
|
|
371
|
642 dbg_valmask = (EMACS_INT) (((1UL << VALBITS) - 1) << GCBITS),
|
|
|
643 dbg_typemask = (EMACS_INT) ((1UL << GCTYPEBITS) - 1),
|
|
|
644 dbg_USE_MINIMAL_TAGBITS = 1,
|
|
|
645 dbg_Lisp_Type_Int = 100,
|
|
|
646 #else /* ! USE_MIMIMAL_TAGBITS */
|
|
|
647 dbg_valmask = (EMACS_INT) ((1UL << VALBITS) - 1),
|
|
|
648 dbg_typemask = (EMACS_INT) (((1UL << GCTYPEBITS) - 1) << (VALBITS + GCMARKBITS)),
|
|
|
649 dbg_USE_MINIMAL_TAGBITS = 0,
|
|
|
650 dbg_Lisp_Type_Int = Lisp_Type_Int,
|
|
|
651 #endif /* ! USE_MIMIMAL_TAGBITS */
|
|
380
|
652
|
|
|
653 #ifdef USE_UNION_TYPE
|
|
|
654 dbg_USE_UNION_TYPE = 1,
|
|
|
655 #else
|
|
|
656 dbg_USE_UNION_TYPE = 0,
|
|
|
657 #endif
|
|
|
658
|
|
371
|
659 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
660 dbg_USE_INDEXED_LRECORD_IMPLEMENTATION = 1,
|
|
337
|
661 #else
|
|
371
|
662 dbg_USE_INDEXED_LRECORD_IMPLEMENTATION = 0,
|
|
337
|
663 #endif
|
|
380
|
664
|
|
371
|
665 dbg_Lisp_Type_Char = Lisp_Type_Char,
|
|
|
666 dbg_Lisp_Type_Record = Lisp_Type_Record,
|
|
272
|
667 #ifdef LRECORD_CONS
|
|
371
|
668 dbg_Lisp_Type_Cons = 101,
|
|
272
|
669 #else
|
|
371
|
670 dbg_Lisp_Type_Cons = Lisp_Type_Cons,
|
|
|
671 lrecord_cons = 201,
|
|
272
|
672 #endif
|
|
|
673 #ifdef LRECORD_STRING
|
|
371
|
674 dbg_Lisp_Type_String = 102,
|
|
272
|
675 #else
|
|
371
|
676 dbg_Lisp_Type_String = Lisp_Type_String,
|
|
|
677 lrecord_string = 202,
|
|
272
|
678 #endif
|
|
|
679 #ifdef LRECORD_VECTOR
|
|
371
|
680 dbg_Lisp_Type_Vector = 103,
|
|
272
|
681 #else
|
|
371
|
682 dbg_Lisp_Type_Vector = Lisp_Type_Vector,
|
|
|
683 lrecord_vector = 203,
|
|
272
|
684 #endif
|
|
371
|
685 #ifdef LRECORD_SYMBOL
|
|
|
686 dbg_Lisp_Type_Symbol = 104,
|
|
|
687 #else
|
|
|
688 dbg_Lisp_Type_Symbol = Lisp_Type_Symbol,
|
|
|
689 lrecord_symbol = 204,
|
|
|
690 #endif
|
|
272
|
691 #ifndef MULE
|
|
371
|
692 lrecord_char_table_entry = 205,
|
|
|
693 lrecord_charset = 206,
|
|
|
694 lrecord_coding_system = 207,
|
|
337
|
695 #endif
|
|
371
|
696 #ifndef HAVE_TOOLBARS
|
|
|
697 lrecord_toolbar_button = 208,
|
|
272
|
698 #endif
|
|
371
|
699 #ifndef HAVE_TOOLTALK
|
|
|
700 lrecord_tooltalk_message = 210,
|
|
|
701 lrecord_tooltalk_pattern = 211,
|
|
272
|
702 #endif
|
|
371
|
703 #ifndef HAVE_DATABASE
|
|
|
704 lrecord_database = 212,
|
|
|
705 #endif
|
|
|
706 dbg_valbits = VALBITS,
|
|
|
707 dbg_gctypebits = GCTYPEBITS
|
|
|
708 /* If we don't have an actual object of this enum, pgcc (and perhaps
|
|
|
709 other compilers) might optimize away the entire type declaration :-( */
|
|
|
710 } dbg_dummy;
|
|
272
|
711
|
|
380
|
712 /* A few macros turned into functions for ease of debugging.
|
|
|
713 Debuggers don't know about macros! */
|
|
|
714 int dbg_eq (Lisp_Object obj1, Lisp_Object obj2);
|
|
|
715 int
|
|
|
716 dbg_eq (Lisp_Object obj1, Lisp_Object obj2)
|
|
|
717 {
|
|
|
718 return EQ (obj1, obj2);
|
|
|
719 }
|
|
|
720
|
|
272
|
721
|
|
380
|
722 /************************************************************************/
|
|
|
723 /* Fixed-size type macros */
|
|
|
724 /************************************************************************/
|
|
0
|
725
|
|
|
726 /* For fixed-size types that are commonly used, we malloc() large blocks
|
|
|
727 of memory at a time and subdivide them into chunks of the correct
|
|
|
728 size for an object of that type. This is more efficient than
|
|
|
729 malloc()ing each object separately because we save on malloc() time
|
|
|
730 and overhead due to the fewer number of malloc()ed blocks, and
|
|
|
731 also because we don't need any extra pointers within each object
|
|
|
732 to keep them threaded together for GC purposes. For less common
|
|
|
733 (and frequently large-size) types, we use lcrecords, which are
|
|
|
734 malloc()ed individually and chained together through a pointer
|
|
|
735 in the lcrecord header. lcrecords do not need to be fixed-size
|
|
|
736 (i.e. two objects of the same type need not have the same size;
|
|
|
737 however, the size of a particular object cannot vary dynamically).
|
|
|
738 It is also much easier to create a new lcrecord type because no
|
|
|
739 additional code needs to be added to alloc.c. Finally, lcrecords
|
|
|
740 may be more efficient when there are only a small number of them.
|
|
|
741
|
|
|
742 The types that are stored in these large blocks (or "frob blocks")
|
|
|
743 are cons, float, compiled-function, symbol, marker, extent, event,
|
|
|
744 and string.
|
|
|
745
|
|
|
746 Note that strings are special in that they are actually stored in
|
|
|
747 two parts: a structure containing information about the string, and
|
|
|
748 the actual data associated with the string. The former structure
|
|
|
749 (a struct Lisp_String) is a fixed-size structure and is managed the
|
|
|
750 same way as all the other such types. This structure contains a
|
|
|
751 pointer to the actual string data, which is stored in structures of
|
|
|
752 type struct string_chars_block. Each string_chars_block consists
|
|
|
753 of a pointer to a struct Lisp_String, followed by the data for that
|
|
|
754 string, followed by another pointer to a struct Lisp_String,
|
|
|
755 followed by the data for that string, etc. At GC time, the data in
|
|
|
756 these blocks is compacted by searching sequentially through all the
|
|
|
757 blocks and compressing out any holes created by unmarked strings.
|
|
|
758 Strings that are more than a certain size (bigger than the size of
|
|
|
759 a string_chars_block, although something like half as big might
|
|
|
760 make more sense) are malloc()ed separately and not stored in
|
|
|
761 string_chars_blocks. Furthermore, no one string stretches across
|
|
|
762 two string_chars_blocks.
|
|
|
763
|
|
|
764 Vectors are each malloc()ed separately, similar to lcrecords.
|
|
183
|
765
|
|
0
|
766 In the following discussion, we use conses, but it applies equally
|
|
|
767 well to the other fixed-size types.
|
|
|
768
|
|
|
769 We store cons cells inside of cons_blocks, allocating a new
|
|
|
770 cons_block with malloc() whenever necessary. Cons cells reclaimed
|
|
|
771 by GC are put on a free list to be reallocated before allocating
|
|
|
772 any new cons cells from the latest cons_block. Each cons_block is
|
|
|
773 just under 2^n - MALLOC_OVERHEAD bytes long, since malloc (at least
|
|
|
774 the versions in malloc.c and gmalloc.c) really allocates in units
|
|
|
775 of powers of two and uses 4 bytes for its own overhead.
|
|
|
776
|
|
|
777 What GC actually does is to search through all the cons_blocks,
|
|
|
778 from the most recently allocated to the oldest, and put all
|
|
|
779 cons cells that are not marked (whether or not they're already
|
|
|
780 free) on a cons_free_list. The cons_free_list is a stack, and
|
|
|
781 so the cons cells in the oldest-allocated cons_block end up
|
|
|
782 at the head of the stack and are the first to be reallocated.
|
|
|
783 If any cons_block is entirely free, it is freed with free()
|
|
|
784 and its cons cells removed from the cons_free_list. Because
|
|
|
785 the cons_free_list ends up basically in memory order, we have
|
|
|
786 a high locality of reference (assuming a reasonable turnover
|
|
|
787 of allocating and freeing) and have a reasonable probability
|
|
|
788 of entirely freeing up cons_blocks that have been more recently
|
|
|
789 allocated. This stage is called the "sweep stage" of GC, and
|
|
|
790 is executed after the "mark stage", which involves starting
|
|
|
791 from all places that are known to point to in-use Lisp objects
|
|
|
792 (e.g. the obarray, where are all symbols are stored; the
|
|
|
793 current catches and condition-cases; the backtrace list of
|
|
|
794 currently executing functions; the gcpro list; etc.) and
|
|
|
795 recursively marking all objects that are accessible.
|
|
|
796
|
|
|
797 At the beginning of the sweep stage, the conses in the cons
|
|
|
798 blocks are in one of three states: in use and marked, in use
|
|
|
799 but not marked, and not in use (already freed). Any conses
|
|
|
800 that are marked have been marked in the mark stage just
|
|
|
801 executed, because as part of the sweep stage we unmark any
|
|
|
802 marked objects. The way we tell whether or not a cons cell
|
|
|
803 is in use is through the FREE_STRUCT_P macro. This basically
|
|
|
804 looks at the first 4 bytes (or however many bytes a pointer
|
|
|
805 fits in) to see if all the bits in those bytes are 1. The
|
|
|
806 resulting value (0xFFFFFFFF) is not a valid pointer and is
|
|
|
807 not a valid Lisp_Object. All current fixed-size types have
|
|
|
808 a pointer or Lisp_Object as their first element with the
|
|
|
809 exception of strings; they have a size value, which can
|
|
|
810 never be less than zero, and so 0xFFFFFFFF is invalid for
|
|
|
811 strings as well. Now assuming that a cons cell is in use,
|
|
|
812 the way we tell whether or not it is marked is to look at
|
|
|
813 the mark bit of its car (each Lisp_Object has one bit
|
|
|
814 reserved as a mark bit, in case it's needed). Note that
|
|
|
815 different types of objects use different fields to indicate
|
|
|
816 whether the object is marked, but the principle is the same.
|
|
|
817
|
|
|
818 Conses on the free_cons_list are threaded through a pointer
|
|
|
819 stored in the bytes directly after the bytes that are set
|
|
|
820 to 0xFFFFFFFF (we cannot overwrite these because the cons
|
|
|
821 is still in a cons_block and needs to remain marked as
|
|
|
822 not in use for the next time that GC happens). This
|
|
|
823 implies that all fixed-size types must be at least big
|
|
|
824 enough to store two pointers, which is indeed the case
|
|
|
825 for all current fixed-size types.
|
|
|
826
|
|
|
827 Some types of objects need additional "finalization" done
|
|
|
828 when an object is converted from in use to not in use;
|
|
|
829 this is the purpose of the ADDITIONAL_FREE_type macro.
|
|
|
830 For example, markers need to be removed from the chain
|
|
|
831 of markers that is kept in each buffer. This is because
|
|
|
832 markers in a buffer automatically disappear if the marker
|
|
|
833 is no longer referenced anywhere (the same does not
|
|
|
834 apply to extents, however).
|
|
|
835
|
|
|
836 WARNING: Things are in an extremely bizarre state when
|
|
|
837 the ADDITIONAL_FREE_type macros are called, so beware!
|
|
|
838
|
|
|
839 When ERROR_CHECK_GC is defined, we do things differently
|
|
|
840 so as to maximize our chances of catching places where
|
|
|
841 there is insufficient GCPROing. The thing we want to
|
|
|
842 avoid is having an object that we're using but didn't
|
|
|
843 GCPRO get freed by GC and then reallocated while we're
|
|
|
844 in the process of using it -- this will result in something
|
|
|
845 seemingly unrelated getting trashed, and is extremely
|
|
|
846 difficult to track down. If the object gets freed but
|
|
|
847 not reallocated, we can usually catch this because we
|
|
|
848 set all bytes of a freed object to 0xDEADBEEF. (The
|
|
|
849 first four bytes, however, are 0xFFFFFFFF, and the next
|
|
|
850 four are a pointer used to chain freed objects together;
|
|
|
851 we play some tricks with this pointer to make it more
|
|
|
852 bogus, so crashes are more likely to occur right away.)
|
|
|
853
|
|
|
854 We want freed objects to stay free as long as possible,
|
|
|
855 so instead of doing what we do above, we maintain the
|
|
|
856 free objects in a first-in first-out queue. We also
|
|
|
857 don't recompute the free list each GC, unlike above;
|
|
|
858 this ensures that the queue ordering is preserved.
|
|
|
859 [This means that we are likely to have worse locality
|
|
|
860 of reference, and that we can never free a frob block
|
|
|
861 once it's allocated. (Even if we know that all cells
|
|
|
862 in it are free, there's no easy way to remove all those
|
|
|
863 cells from the free list because the objects on the
|
|
|
864 free list are unlikely to be in memory order.)]
|
|
|
865 Furthermore, we never take objects off the free list
|
|
|
866 unless there's a large number (usually 1000, but
|
|
|
867 varies depending on type) of them already on the list.
|
|
|
868 This way, we ensure that an object that gets freed will
|
|
|
869 remain free for the next 1000 (or whatever) times that
|
|
|
870 an object of that type is allocated.
|
|
|
871 */
|
|
|
872
|
|
|
873 #ifndef MALLOC_OVERHEAD
|
|
|
874 #ifdef GNU_MALLOC
|
|
|
875 #define MALLOC_OVERHEAD 0
|
|
|
876 #elif defined (rcheck)
|
|
|
877 #define MALLOC_OVERHEAD 20
|
|
|
878 #else
|
|
|
879 #define MALLOC_OVERHEAD 8
|
|
|
880 #endif
|
|
183
|
881 #endif /* MALLOC_OVERHEAD */
|
|
0
|
882
|
|
255
|
883 #if !defined(HAVE_MMAP) || defined(DOUG_LEA_MALLOC)
|
|
|
884 /* If we released our reserve (due to running out of memory),
|
|
|
885 and we have a fair amount free once again,
|
|
|
886 try to set aside another reserve in case we run out once more.
|
|
|
887
|
|
|
888 This is called when a relocatable block is freed in ralloc.c. */
|
|
272
|
889 void refill_memory_reserve (void);
|
|
255
|
890 void
|
|
|
891 refill_memory_reserve ()
|
|
|
892 {
|
|
|
893 if (breathing_space == 0)
|
|
|
894 breathing_space = (char *) malloc (4096 - MALLOC_OVERHEAD);
|
|
|
895 }
|
|
|
896 #endif
|
|
|
897
|
|
0
|
898 #ifdef ALLOC_NO_POOLS
|
|
|
899 # define TYPE_ALLOC_SIZE(type, structtype) 1
|
|
|
900 #else
|
|
|
901 # define TYPE_ALLOC_SIZE(type, structtype) \
|
|
|
902 ((2048 - MALLOC_OVERHEAD - sizeof (struct type##_block *)) \
|
|
|
903 / sizeof (structtype))
|
|
183
|
904 #endif /* ALLOC_NO_POOLS */
|
|
0
|
905
|
|
380
|
906 #define DECLARE_FIXED_TYPE_ALLOC(type, structtype) \
|
|
|
907 \
|
|
|
908 struct type##_block \
|
|
|
909 { \
|
|
|
910 struct type##_block *prev; \
|
|
|
911 structtype block[TYPE_ALLOC_SIZE (type, structtype)]; \
|
|
|
912 }; \
|
|
|
913 \
|
|
|
914 static struct type##_block *current_##type##_block; \
|
|
|
915 static int current_##type##_block_index; \
|
|
|
916 \
|
|
|
917 static structtype *type##_free_list; \
|
|
|
918 static structtype *type##_free_list_tail; \
|
|
|
919 \
|
|
|
920 static void \
|
|
|
921 init_##type##_alloc (void) \
|
|
|
922 { \
|
|
|
923 current_##type##_block = 0; \
|
|
|
924 current_##type##_block_index = \
|
|
|
925 countof (current_##type##_block->block); \
|
|
|
926 type##_free_list = 0; \
|
|
|
927 type##_free_list_tail = 0; \
|
|
|
928 } \
|
|
|
929 \
|
|
|
930 static int gc_count_num_##type##_in_use; \
|
|
|
931 static int gc_count_num_##type##_freelist
|
|
|
932
|
|
|
933 #define ALLOCATE_FIXED_TYPE_FROM_BLOCK(type, result) do { \
|
|
|
934 if (current_##type##_block_index \
|
|
|
935 == countof (current_##type##_block->block)) \
|
|
0
|
936 { \
|
|
380
|
937 struct type##_block *AFTFB_new = (struct type##_block *) \
|
|
|
938 allocate_lisp_storage (sizeof (struct type##_block)); \
|
|
|
939 AFTFB_new->prev = current_##type##_block; \
|
|
|
940 current_##type##_block = AFTFB_new; \
|
|
0
|
941 current_##type##_block_index = 0; \
|
|
|
942 } \
|
|
380
|
943 (result) = \
|
|
|
944 &(current_##type##_block->block[current_##type##_block_index++]); \
|
|
|
945 } while (0)
|
|
0
|
946
|
|
|
947 /* Allocate an instance of a type that is stored in blocks.
|
|
|
948 TYPE is the "name" of the type, STRUCTTYPE is the corresponding
|
|
|
949 structure type. */
|
|
|
950
|
|
|
951 #ifdef ERROR_CHECK_GC
|
|
|
952
|
|
|
953 /* Note: if you get crashes in this function, suspect incorrect calls
|
|
|
954 to free_cons() and friends. This happened once because the cons
|
|
|
955 cell was not GC-protected and was getting collected before
|
|
|
956 free_cons() was called. */
|
|
|
957
|
|
|
958 #define ALLOCATE_FIXED_TYPE_1(type, structtype, result) \
|
|
|
959 do \
|
|
|
960 { \
|
|
|
961 if (gc_count_num_##type##_freelist > \
|
|
|
962 MINIMUM_ALLOWED_FIXED_TYPE_CELLS_##type) \
|
|
|
963 { \
|
|
|
964 result = type##_free_list; \
|
|
|
965 /* Before actually using the chain pointer, we complement all its \
|
|
|
966 bits; see FREE_FIXED_TYPE(). */ \
|
|
|
967 type##_free_list = \
|
|
|
968 (structtype *) ~(unsigned long) \
|
|
|
969 (* (structtype **) ((char *) result + sizeof (void *))); \
|
|
|
970 gc_count_num_##type##_freelist--; \
|
|
|
971 } \
|
|
|
972 else \
|
|
|
973 ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result); \
|
|
|
974 MARK_STRUCT_AS_NOT_FREE (result); \
|
|
|
975 } while (0)
|
|
|
976
|
|
183
|
977 #else /* !ERROR_CHECK_GC */
|
|
0
|
978
|
|
|
979 #define ALLOCATE_FIXED_TYPE_1(type, structtype, result) \
|
|
|
980 do \
|
|
|
981 { \
|
|
|
982 if (type##_free_list) \
|
|
|
983 { \
|
|
|
984 result = type##_free_list; \
|
|
|
985 type##_free_list = \
|
|
|
986 * (structtype **) ((char *) result + sizeof (void *)); \
|
|
|
987 } \
|
|
|
988 else \
|
|
|
989 ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result); \
|
|
|
990 MARK_STRUCT_AS_NOT_FREE (result); \
|
|
|
991 } while (0)
|
|
|
992
|
|
183
|
993 #endif /* !ERROR_CHECK_GC */
|
|
0
|
994
|
|
|
995 #define ALLOCATE_FIXED_TYPE(type, structtype, result) \
|
|
|
996 do \
|
|
|
997 { \
|
|
|
998 ALLOCATE_FIXED_TYPE_1 (type, structtype, result); \
|
|
|
999 INCREMENT_CONS_COUNTER (sizeof (structtype), #type); \
|
|
|
1000 } while (0)
|
|
|
1001
|
|
|
1002 #define NOSEEUM_ALLOCATE_FIXED_TYPE(type, structtype, result) \
|
|
|
1003 do \
|
|
|
1004 { \
|
|
|
1005 ALLOCATE_FIXED_TYPE_1 (type, structtype, result); \
|
|
|
1006 NOSEEUM_INCREMENT_CONS_COUNTER (sizeof (structtype), #type); \
|
|
|
1007 } while (0)
|
|
|
1008
|
|
|
1009 /* INVALID_POINTER_VALUE should be a value that is invalid as a pointer
|
|
|
1010 to a Lisp object and invalid as an actual Lisp_Object value. We have
|
|
|
1011 to make sure that this value cannot be an integer in Lisp_Object form.
|
|
|
1012 0xFFFFFFFF could be so on a 64-bit system, so we extend it to 64 bits.
|
|
|
1013 On a 32-bit system, the type bits will be non-zero, making the value
|
|
|
1014 be a pointer, and the pointer will be misaligned.
|
|
|
1015
|
|
|
1016 Even if Emacs is run on some weirdo system that allows and allocates
|
|
|
1017 byte-aligned pointers, this pointer is at the very top of the address
|
|
|
1018 space and so it's almost inconceivable that it could ever be valid. */
|
|
183
|
1019
|
|
371
|
1020 #if INTBITS == 32
|
|
|
1021 # define INVALID_POINTER_VALUE 0xFFFFFFFF
|
|
|
1022 #elif INTBITS == 48
|
|
|
1023 # define INVALID_POINTER_VALUE 0xFFFFFFFFFFFF
|
|
|
1024 #elif INTBITS == 64
|
|
|
1025 # define INVALID_POINTER_VALUE 0xFFFFFFFFFFFFFFFF
|
|
0
|
1026 #else
|
|
|
1027 You have some weird system and need to supply a reasonable value here.
|
|
|
1028 #endif
|
|
|
1029
|
|
|
1030 #define FREE_STRUCT_P(ptr) \
|
|
371
|
1031 (* (void **) ptr == (void *) INVALID_POINTER_VALUE)
|
|
|
1032 #define MARK_STRUCT_AS_FREE(ptr) \
|
|
|
1033 (* (void **) ptr = (void *) INVALID_POINTER_VALUE)
|
|
|
1034 #define MARK_STRUCT_AS_NOT_FREE(ptr) \
|
|
|
1035 (* (void **) ptr = 0)
|
|
0
|
1036
|
|
|
1037 #ifdef ERROR_CHECK_GC
|
|
|
1038
|
|
|
1039 #define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr) \
|
|
|
1040 do { if (type##_free_list_tail) \
|
|
|
1041 { \
|
|
|
1042 /* When we store the chain pointer, we complement all \
|
|
|
1043 its bits; this should significantly increase its \
|
|
|
1044 bogosity in case someone tries to use the value, and \
|
|
|
1045 should make us dump faster if someone stores something \
|
|
|
1046 over the pointer because when it gets un-complemented in \
|
|
|
1047 ALLOCATED_FIXED_TYPE(), the resulting pointer will be \
|
|
|
1048 extremely bogus. */ \
|
|
|
1049 * (structtype **) \
|
|
|
1050 ((char *) type##_free_list_tail + sizeof (void *)) = \
|
|
|
1051 (structtype *) ~(unsigned long) ptr; \
|
|
|
1052 } \
|
|
|
1053 else \
|
|
|
1054 type##_free_list = ptr; \
|
|
|
1055 type##_free_list_tail = ptr; \
|
|
|
1056 } while (0)
|
|
|
1057
|
|
183
|
1058 #else /* !ERROR_CHECK_GC */
|
|
0
|
1059
|
|
|
1060 #define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr) \
|
|
380
|
1061 do { * (structtype **) ((char *) (ptr) + sizeof (void *)) = \
|
|
0
|
1062 type##_free_list; \
|
|
380
|
1063 type##_free_list = (ptr); \
|
|
0
|
1064 } while (0)
|
|
|
1065
|
|
183
|
1066 #endif /* !ERROR_CHECK_GC */
|
|
0
|
1067
|
|
|
1068 /* TYPE and STRUCTTYPE are the same as in ALLOCATE_FIXED_TYPE(). */
|
|
|
1069
|
|
380
|
1070 #define FREE_FIXED_TYPE(type, structtype, ptr) do { \
|
|
|
1071 structtype *FFT_ptr = (ptr); \
|
|
|
1072 ADDITIONAL_FREE_##type (FFT_ptr); \
|
|
|
1073 deadbeef_memory (FFT_ptr, sizeof (structtype)); \
|
|
|
1074 PUT_FIXED_TYPE_ON_FREE_LIST (type, structtype, FFT_ptr); \
|
|
|
1075 MARK_STRUCT_AS_FREE (FFT_ptr); \
|
|
|
1076 } while (0)
|
|
0
|
1077
|
|
|
1078 /* Like FREE_FIXED_TYPE() but used when we are explicitly
|
|
|
1079 freeing a structure through free_cons(), free_marker(), etc.
|
|
|
1080 rather than through the normal process of sweeping.
|
|
|
1081 We attempt to undo the changes made to the allocation counters
|
|
|
1082 as a result of this structure being allocated. This is not
|
|
|
1083 completely necessary but helps keep things saner: e.g. this way,
|
|
|
1084 repeatedly allocating and freeing a cons will not result in
|
|
|
1085 the consing-since-gc counter advancing, which would cause a GC
|
|
|
1086 and somewhat defeat the purpose of explicitly freeing. */
|
|
|
1087
|
|
|
1088 #define FREE_FIXED_TYPE_WHEN_NOT_IN_GC(type, structtype, ptr) \
|
|
|
1089 do { FREE_FIXED_TYPE (type, structtype, ptr); \
|
|
|
1090 DECREMENT_CONS_COUNTER (sizeof (structtype)); \
|
|
|
1091 gc_count_num_##type##_freelist++; \
|
|
|
1092 } while (0)
|
|
183
|
1093
|
|
0
|
1094
|
|
|
1095
|
|
380
|
1096 /************************************************************************/
|
|
|
1097 /* Cons allocation */
|
|
|
1098 /************************************************************************/
|
|
0
|
1099
|
|
|
1100 DECLARE_FIXED_TYPE_ALLOC (cons, struct Lisp_Cons);
|
|
|
1101 /* conses are used and freed so often that we set this really high */
|
|
|
1102 /* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 20000 */
|
|
|
1103 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 2000
|
|
|
1104
|
|
207
|
1105 #ifdef LRECORD_CONS
|
|
|
1106 static Lisp_Object
|
|
|
1107 mark_cons (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
|
1108 {
|
|
380
|
1109 if (GC_NILP (XCDR (obj)))
|
|
207
|
1110 return XCAR (obj);
|
|
272
|
1111
|
|
380
|
1112 markobj (XCAR (obj));
|
|
207
|
1113 return XCDR (obj);
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 static int
|
|
|
1117 cons_equal (Lisp_Object ob1, Lisp_Object ob2, int depth)
|
|
|
1118 {
|
|
|
1119 while (internal_equal (XCAR (ob1), XCAR (ob2), depth + 1))
|
|
|
1120 {
|
|
272
|
1121 ob1 = XCDR (ob1);
|
|
|
1122 ob2 = XCDR (ob2);
|
|
207
|
1123 if (! CONSP (ob1) || ! CONSP (ob2))
|
|
|
1124 return internal_equal (ob1, ob2, depth + 1);
|
|
|
1125 }
|
|
|
1126 return 0;
|
|
|
1127 }
|
|
243
|
1128
|
|
|
1129 DEFINE_BASIC_LRECORD_IMPLEMENTATION ("cons", cons,
|
|
|
1130 mark_cons, print_cons, 0,
|
|
|
1131 cons_equal,
|
|
|
1132 /*
|
|
|
1133 * No `hash' method needed.
|
|
|
1134 * internal_hash knows how to
|
|
|
1135 * handle conses.
|
|
|
1136 */
|
|
|
1137 0,
|
|
|
1138 struct Lisp_Cons);
|
|
207
|
1139 #endif /* LRECORD_CONS */
|
|
|
1140
|
|
20
|
1141 DEFUN ("cons", Fcons, 2, 2, 0, /*
|
|
0
|
1142 Create a new cons, give it CAR and CDR as components, and return it.
|
|
20
|
1143 */
|
|
|
1144 (car, cdr))
|
|
0
|
1145 {
|
|
|
1146 /* This cannot GC. */
|
|
272
|
1147 Lisp_Object val;
|
|
0
|
1148 struct Lisp_Cons *c;
|
|
|
1149
|
|
|
1150 ALLOCATE_FIXED_TYPE (cons, struct Lisp_Cons, c);
|
|
207
|
1151 #ifdef LRECORD_CONS
|
|
|
1152 set_lheader_implementation (&(c->lheader), lrecord_cons);
|
|
|
1153 #endif
|
|
0
|
1154 XSETCONS (val, c);
|
|
207
|
1155 c->car = car;
|
|
|
1156 c->cdr = cdr;
|
|
0
|
1157 return val;
|
|
|
1158 }
|
|
|
1159
|
|
|
1160 /* This is identical to Fcons() but it used for conses that we're
|
|
|
1161 going to free later, and is useful when trying to track down
|
|
|
1162 "real" consing. */
|
|
|
1163 Lisp_Object
|
|
|
1164 noseeum_cons (Lisp_Object car, Lisp_Object cdr)
|
|
|
1165 {
|
|
272
|
1166 Lisp_Object val;
|
|
0
|
1167 struct Lisp_Cons *c;
|
|
|
1168
|
|
|
1169 NOSEEUM_ALLOCATE_FIXED_TYPE (cons, struct Lisp_Cons, c);
|
|
207
|
1170 #ifdef LRECORD_CONS
|
|
|
1171 set_lheader_implementation (&(c->lheader), lrecord_cons);
|
|
|
1172 #endif
|
|
0
|
1173 XSETCONS (val, c);
|
|
|
1174 XCAR (val) = car;
|
|
|
1175 XCDR (val) = cdr;
|
|
|
1176 return val;
|
|
|
1177 }
|
|
|
1178
|
|
20
|
1179 DEFUN ("list", Flist, 0, MANY, 0, /*
|
|
0
|
1180 Return a newly created list with specified arguments as elements.
|
|
|
1181 Any number of arguments, even zero arguments, are allowed.
|
|
20
|
1182 */
|
|
|
1183 (int nargs, Lisp_Object *args))
|
|
0
|
1184 {
|
|
165
|
1185 Lisp_Object val = Qnil;
|
|
|
1186 Lisp_Object *argp = args + nargs;
|
|
|
1187
|
|
380
|
1188 while (argp > args)
|
|
165
|
1189 val = Fcons (*--argp, val);
|
|
0
|
1190 return val;
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 Lisp_Object
|
|
|
1194 list1 (Lisp_Object obj0)
|
|
|
1195 {
|
|
|
1196 /* This cannot GC. */
|
|
173
|
1197 return Fcons (obj0, Qnil);
|
|
0
|
1198 }
|
|
|
1199
|
|
|
1200 Lisp_Object
|
|
|
1201 list2 (Lisp_Object obj0, Lisp_Object obj1)
|
|
|
1202 {
|
|
|
1203 /* This cannot GC. */
|
|
272
|
1204 return Fcons (obj0, Fcons (obj1, Qnil));
|
|
0
|
1205 }
|
|
|
1206
|
|
|
1207 Lisp_Object
|
|
|
1208 list3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2)
|
|
|
1209 {
|
|
|
1210 /* This cannot GC. */
|
|
272
|
1211 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Qnil)));
|
|
0
|
1212 }
|
|
|
1213
|
|
272
|
1214 Lisp_Object
|
|
0
|
1215 cons3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2)
|
|
|
1216 {
|
|
|
1217 /* This cannot GC. */
|
|
|
1218 return Fcons (obj0, Fcons (obj1, obj2));
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 Lisp_Object
|
|
272
|
1222 acons (Lisp_Object key, Lisp_Object value, Lisp_Object alist)
|
|
|
1223 {
|
|
|
1224 return Fcons (Fcons (key, value), alist);
|
|
|
1225 }
|
|
|
1226
|
|
|
1227 Lisp_Object
|
|
0
|
1228 list4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3)
|
|
|
1229 {
|
|
|
1230 /* This cannot GC. */
|
|
272
|
1231 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Qnil))));
|
|
0
|
1232 }
|
|
|
1233
|
|
|
1234 Lisp_Object
|
|
|
1235 list5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3,
|
|
|
1236 Lisp_Object obj4)
|
|
|
1237 {
|
|
|
1238 /* This cannot GC. */
|
|
272
|
1239 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Qnil)))));
|
|
0
|
1240 }
|
|
|
1241
|
|
|
1242 Lisp_Object
|
|
|
1243 list6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3,
|
|
|
1244 Lisp_Object obj4, Lisp_Object obj5)
|
|
|
1245 {
|
|
|
1246 /* This cannot GC. */
|
|
272
|
1247 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Fcons (obj5, Qnil))))));
|
|
0
|
1248 }
|
|
|
1249
|
|
20
|
1250 DEFUN ("make-list", Fmake_list, 2, 2, 0, /*
|
|
272
|
1251 Return a new list of length LENGTH, with each element being INIT.
|
|
20
|
1252 */
|
|
|
1253 (length, init))
|
|
0
|
1254 {
|
|
|
1255 CHECK_NATNUM (length);
|
|
272
|
1256
|
|
|
1257 {
|
|
|
1258 Lisp_Object val = Qnil;
|
|
|
1259 int size = XINT (length);
|
|
|
1260
|
|
|
1261 while (size-- > 0)
|
|
|
1262 val = Fcons (init, val);
|
|
|
1263 return val;
|
|
|
1264 }
|
|
0
|
1265 }
|
|
|
1266
|
|
|
1267
|
|
380
|
1268 /************************************************************************/
|
|
|
1269 /* Float allocation */
|
|
|
1270 /************************************************************************/
|
|
0
|
1271
|
|
|
1272 #ifdef LISP_FLOAT_TYPE
|
|
|
1273
|
|
|
1274 DECLARE_FIXED_TYPE_ALLOC (float, struct Lisp_Float);
|
|
|
1275 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_float 1000
|
|
|
1276
|
|
|
1277 Lisp_Object
|
|
|
1278 make_float (double float_value)
|
|
|
1279 {
|
|
|
1280 Lisp_Object val;
|
|
|
1281 struct Lisp_Float *f;
|
|
|
1282
|
|
|
1283 ALLOCATE_FIXED_TYPE (float, struct Lisp_Float, f);
|
|
211
|
1284 set_lheader_implementation (&(f->lheader), lrecord_float);
|
|
0
|
1285 float_data (f) = float_value;
|
|
|
1286 XSETFLOAT (val, f);
|
|
173
|
1287 return val;
|
|
0
|
1288 }
|
|
|
1289
|
|
|
1290 #endif /* LISP_FLOAT_TYPE */
|
|
|
1291
|
|
|
1292
|
|
380
|
1293 /************************************************************************/
|
|
|
1294 /* Vector allocation */
|
|
|
1295 /************************************************************************/
|
|
0
|
1296
|
|
207
|
1297 #ifdef LRECORD_VECTOR
|
|
|
1298 static Lisp_Object
|
|
|
1299 mark_vector (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
|
1300 {
|
|
380
|
1301 Lisp_Vector *ptr = XVECTOR (obj);
|
|
207
|
1302 int len = vector_length (ptr);
|
|
|
1303 int i;
|
|
|
1304
|
|
|
1305 for (i = 0; i < len - 1; i++)
|
|
380
|
1306 markobj (ptr->contents[i]);
|
|
207
|
1307 return (len > 0) ? ptr->contents[len - 1] : Qnil;
|
|
|
1308 }
|
|
|
1309
|
|
272
|
1310 static size_t
|
|
207
|
1311 size_vector (CONST void *lheader)
|
|
|
1312 {
|
|
382
|
1313 return STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents,
|
|
|
1314 ((Lisp_Vector *) lheader)->size);
|
|
207
|
1315 }
|
|
|
1316
|
|
|
1317 static int
|
|
380
|
1318 vector_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
|
|
207
|
1319 {
|
|
380
|
1320 int len = XVECTOR_LENGTH (obj1);
|
|
|
1321 if (len != XVECTOR_LENGTH (obj2))
|
|
207
|
1322 return 0;
|
|
382
|
1323
|
|
|
1324 {
|
|
|
1325 Lisp_Object *ptr1 = XVECTOR_DATA (obj1);
|
|
|
1326 Lisp_Object *ptr2 = XVECTOR_DATA (obj2);
|
|
|
1327 while (len--)
|
|
|
1328 if (!internal_equal (*ptr1++, *ptr2++, depth + 1))
|
|
207
|
1329 return 0;
|
|
382
|
1330 }
|
|
207
|
1331 return 1;
|
|
|
1332 }
|
|
|
1333
|
|
243
|
1334 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION("vector", vector,
|
|
|
1335 mark_vector, print_vector, 0,
|
|
|
1336 vector_equal,
|
|
|
1337 /*
|
|
|
1338 * No `hash' method needed for
|
|
|
1339 * vectors. internal_hash
|
|
|
1340 * knows how to handle vectors.
|
|
|
1341 */
|
|
|
1342 0,
|
|
380
|
1343 size_vector, Lisp_Vector);
|
|
243
|
1344
|
|
207
|
1345 /* #### should allocate `small' vectors from a frob-block */
|
|
380
|
1346 static Lisp_Vector *
|
|
272
|
1347 make_vector_internal (size_t sizei)
|
|
207
|
1348 {
|
|
380
|
1349 /* no vector_next */
|
|
382
|
1350 size_t sizem = STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents, sizei);
|
|
380
|
1351 Lisp_Vector *p = (Lisp_Vector *) alloc_lcrecord (sizem, lrecord_vector);
|
|
207
|
1352
|
|
|
1353 p->size = sizei;
|
|
|
1354 return p;
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 #else /* ! LRECORD_VECTOR */
|
|
|
1358
|
|
0
|
1359 static Lisp_Object all_vectors;
|
|
|
1360
|
|
|
1361 /* #### should allocate `small' vectors from a frob-block */
|
|
380
|
1362 static Lisp_Vector *
|
|
272
|
1363 make_vector_internal (size_t sizei)
|
|
0
|
1364 {
|
|
380
|
1365 /* + 1 to account for vector_next */
|
|
382
|
1366 size_t sizem = STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents, sizei+1);
|
|
380
|
1367 Lisp_Vector *p = (Lisp_Vector *) allocate_lisp_storage (sizem);
|
|
0
|
1368
|
|
|
1369 INCREMENT_CONS_COUNTER (sizem, "vector");
|
|
|
1370
|
|
|
1371 p->size = sizei;
|
|
|
1372 vector_next (p) = all_vectors;
|
|
|
1373 XSETVECTOR (all_vectors, p);
|
|
173
|
1374 return p;
|
|
0
|
1375 }
|
|
|
1376
|
|
243
|
1377 #endif /* ! LRECORD_VECTOR */
|
|
207
|
1378
|
|
0
|
1379 Lisp_Object
|
|
382
|
1380 make_vector (size_t length, Lisp_Object init)
|
|
0
|
1381 {
|
|
382
|
1382 Lisp_Vector *vecp = make_vector_internal (length);
|
|
|
1383 Lisp_Object *p = vector_data (vecp);
|
|
|
1384
|
|
|
1385 while (length--)
|
|
|
1386 *p++ = init;
|
|
|
1387
|
|
0
|
1388 {
|
|
382
|
1389 Lisp_Object vector;
|
|
|
1390 XSETVECTOR (vector, vecp);
|
|
173
|
1391 return vector;
|
|
0
|
1392 }
|
|
|
1393 }
|
|
|
1394
|
|
20
|
1395 DEFUN ("make-vector", Fmake_vector, 2, 2, 0, /*
|
|
272
|
1396 Return a new vector of length LENGTH, with each element being INIT.
|
|
0
|
1397 See also the function `vector'.
|
|
20
|
1398 */
|
|
|
1399 (length, init))
|
|
0
|
1400 {
|
|
382
|
1401 CONCHECK_NATNUM (length);
|
|
173
|
1402 return make_vector (XINT (length), init);
|
|
0
|
1403 }
|
|
|
1404
|
|
20
|
1405 DEFUN ("vector", Fvector, 0, MANY, 0, /*
|
|
0
|
1406 Return a newly created vector with specified arguments as elements.
|
|
|
1407 Any number of arguments, even zero arguments, are allowed.
|
|
20
|
1408 */
|
|
|
1409 (int nargs, Lisp_Object *args))
|
|
0
|
1410 {
|
|
382
|
1411 Lisp_Vector *vecp = make_vector_internal (nargs);
|
|
|
1412 Lisp_Object *p = vector_data (vecp);
|
|
|
1413
|
|
|
1414 while (nargs--)
|
|
|
1415 *p++ = *args++;
|
|
|
1416
|
|
|
1417 {
|
|
|
1418 Lisp_Object vector;
|
|
|
1419 XSETVECTOR (vector, vecp);
|
|
|
1420 return vector;
|
|
|
1421 }
|
|
0
|
1422 }
|
|
|
1423
|
|
|
1424 Lisp_Object
|
|
|
1425 vector1 (Lisp_Object obj0)
|
|
|
1426 {
|
|
|
1427 return Fvector (1, &obj0);
|
|
|
1428 }
|
|
|
1429
|
|
|
1430 Lisp_Object
|
|
|
1431 vector2 (Lisp_Object obj0, Lisp_Object obj1)
|
|
|
1432 {
|
|
|
1433 Lisp_Object args[2];
|
|
|
1434 args[0] = obj0;
|
|
|
1435 args[1] = obj1;
|
|
|
1436 return Fvector (2, args);
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 Lisp_Object
|
|
|
1440 vector3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2)
|
|
|
1441 {
|
|
|
1442 Lisp_Object args[3];
|
|
|
1443 args[0] = obj0;
|
|
|
1444 args[1] = obj1;
|
|
|
1445 args[2] = obj2;
|
|
|
1446 return Fvector (3, args);
|
|
|
1447 }
|
|
|
1448
|
|
272
|
1449 #if 0 /* currently unused */
|
|
|
1450
|
|
0
|
1451 Lisp_Object
|
|
|
1452 vector4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
|
|
|
1453 Lisp_Object obj3)
|
|
|
1454 {
|
|
|
1455 Lisp_Object args[4];
|
|
|
1456 args[0] = obj0;
|
|
|
1457 args[1] = obj1;
|
|
|
1458 args[2] = obj2;
|
|
|
1459 args[3] = obj3;
|
|
|
1460 return Fvector (4, args);
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 Lisp_Object
|
|
|
1464 vector5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
|
|
|
1465 Lisp_Object obj3, Lisp_Object obj4)
|
|
|
1466 {
|
|
|
1467 Lisp_Object args[5];
|
|
|
1468 args[0] = obj0;
|
|
|
1469 args[1] = obj1;
|
|
|
1470 args[2] = obj2;
|
|
|
1471 args[3] = obj3;
|
|
|
1472 args[4] = obj4;
|
|
|
1473 return Fvector (5, args);
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 Lisp_Object
|
|
|
1477 vector6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
|
|
|
1478 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5)
|
|
|
1479 {
|
|
|
1480 Lisp_Object args[6];
|
|
|
1481 args[0] = obj0;
|
|
|
1482 args[1] = obj1;
|
|
|
1483 args[2] = obj2;
|
|
|
1484 args[3] = obj3;
|
|
|
1485 args[4] = obj4;
|
|
|
1486 args[5] = obj5;
|
|
|
1487 return Fvector (6, args);
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 Lisp_Object
|
|
|
1491 vector7 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
|
|
|
1492 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5,
|
|
|
1493 Lisp_Object obj6)
|
|
|
1494 {
|
|
|
1495 Lisp_Object args[7];
|
|
|
1496 args[0] = obj0;
|
|
|
1497 args[1] = obj1;
|
|
|
1498 args[2] = obj2;
|
|
|
1499 args[3] = obj3;
|
|
|
1500 args[4] = obj4;
|
|
|
1501 args[5] = obj5;
|
|
|
1502 args[6] = obj6;
|
|
|
1503 return Fvector (7, args);
|
|
|
1504 }
|
|
|
1505
|
|
|
1506 Lisp_Object
|
|
|
1507 vector8 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
|
|
|
1508 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5,
|
|
|
1509 Lisp_Object obj6, Lisp_Object obj7)
|
|
|
1510 {
|
|
|
1511 Lisp_Object args[8];
|
|
|
1512 args[0] = obj0;
|
|
|
1513 args[1] = obj1;
|
|
|
1514 args[2] = obj2;
|
|
|
1515 args[3] = obj3;
|
|
|
1516 args[4] = obj4;
|
|
|
1517 args[5] = obj5;
|
|
|
1518 args[6] = obj6;
|
|
|
1519 args[7] = obj7;
|
|
|
1520 return Fvector (8, args);
|
|
|
1521 }
|
|
272
|
1522 #endif /* unused */
|
|
0
|
1523
|
|
380
|
1524 /************************************************************************/
|
|
|
1525 /* Bit Vector allocation */
|
|
|
1526 /************************************************************************/
|
|
0
|
1527
|
|
|
1528 static Lisp_Object all_bit_vectors;
|
|
|
1529
|
|
|
1530 /* #### should allocate `small' bit vectors from a frob-block */
|
|
|
1531 static struct Lisp_Bit_Vector *
|
|
272
|
1532 make_bit_vector_internal (size_t sizei)
|
|
0
|
1533 {
|
|
382
|
1534 size_t num_longs = BIT_VECTOR_LONG_STORAGE (sizei);
|
|
|
1535 size_t sizem = STRETCHY_STRUCT_SIZEOF (Lisp_Bit_Vector, bits, num_longs);
|
|
380
|
1536 Lisp_Bit_Vector *p = (Lisp_Bit_Vector *) allocate_lisp_storage (sizem);
|
|
0
|
1537 set_lheader_implementation (&(p->lheader), lrecord_bit_vector);
|
|
|
1538
|
|
|
1539 INCREMENT_CONS_COUNTER (sizem, "bit-vector");
|
|
|
1540
|
|
|
1541 bit_vector_length (p) = sizei;
|
|
380
|
1542 bit_vector_next (p) = all_bit_vectors;
|
|
0
|
1543 /* make sure the extra bits in the last long are 0; the calling
|
|
|
1544 functions might not set them. */
|
|
382
|
1545 p->bits[num_longs - 1] = 0;
|
|
0
|
1546 XSETBIT_VECTOR (all_bit_vectors, p);
|
|
173
|
1547 return p;
|
|
0
|
1548 }
|
|
|
1549
|
|
|
1550 Lisp_Object
|
|
382
|
1551 make_bit_vector (size_t length, Lisp_Object init)
|
|
0
|
1552 {
|
|
382
|
1553 struct Lisp_Bit_Vector *p = make_bit_vector_internal (length);
|
|
|
1554 size_t num_longs = BIT_VECTOR_LONG_STORAGE (length);
|
|
0
|
1555
|
|
|
1556 CHECK_BIT (init);
|
|
|
1557
|
|
|
1558 if (ZEROP (init))
|
|
|
1559 memset (p->bits, 0, num_longs * sizeof (long));
|
|
|
1560 else
|
|
|
1561 {
|
|
382
|
1562 size_t bits_in_last = length & (LONGBITS_POWER_OF_2 - 1);
|
|
0
|
1563 memset (p->bits, ~0, num_longs * sizeof (long));
|
|
|
1564 /* But we have to make sure that the unused bits in the
|
|
382
|
1565 last long are 0, so that equal/hash is easy. */
|
|
0
|
1566 if (bits_in_last)
|
|
|
1567 p->bits[num_longs - 1] &= (1 << bits_in_last) - 1;
|
|
|
1568 }
|
|
|
1569
|
|
382
|
1570 {
|
|
|
1571 Lisp_Object bit_vector;
|
|
|
1572 XSETBIT_VECTOR (bit_vector, p);
|
|
|
1573 return bit_vector;
|
|
|
1574 }
|
|
0
|
1575 }
|
|
|
1576
|
|
|
1577 Lisp_Object
|
|
382
|
1578 make_bit_vector_from_byte_vector (unsigned char *bytevec, size_t length)
|
|
0
|
1579 {
|
|
272
|
1580 int i;
|
|
382
|
1581 Lisp_Bit_Vector *p = make_bit_vector_internal (length);
|
|
0
|
1582
|
|
|
1583 for (i = 0; i < length; i++)
|
|
|
1584 set_bit_vector_bit (p, i, bytevec[i]);
|
|
|
1585
|
|
382
|
1586 {
|
|
|
1587 Lisp_Object bit_vector;
|
|
|
1588 XSETBIT_VECTOR (bit_vector, p);
|
|
|
1589 return bit_vector;
|
|
|
1590 }
|
|
0
|
1591 }
|
|
|
1592
|
|
20
|
1593 DEFUN ("make-bit-vector", Fmake_bit_vector, 2, 2, 0, /*
|
|
272
|
1594 Return a new bit vector of length LENGTH. with each bit being INIT.
|
|
0
|
1595 Each element is set to INIT. See also the function `bit-vector'.
|
|
20
|
1596 */
|
|
|
1597 (length, init))
|
|
0
|
1598 {
|
|
272
|
1599 CONCHECK_NATNUM (length);
|
|
0
|
1600
|
|
173
|
1601 return make_bit_vector (XINT (length), init);
|
|
0
|
1602 }
|
|
|
1603
|
|
20
|
1604 DEFUN ("bit-vector", Fbit_vector, 0, MANY, 0, /*
|
|
0
|
1605 Return a newly created bit vector with specified arguments as elements.
|
|
|
1606 Any number of arguments, even zero arguments, are allowed.
|
|
20
|
1607 */
|
|
|
1608 (int nargs, Lisp_Object *args))
|
|
0
|
1609 {
|
|
382
|
1610 int i;
|
|
|
1611 Lisp_Bit_Vector *p = make_bit_vector_internal (nargs);
|
|
|
1612
|
|
|
1613 for (i = 0; i < nargs; i++)
|
|
|
1614 {
|
|
|
1615 CHECK_BIT (args[i]);
|
|
|
1616 set_bit_vector_bit (p, i, !ZEROP (args[i]));
|
|
|
1617 }
|
|
|
1618
|
|
|
1619 {
|
|
|
1620 Lisp_Object bit_vector;
|
|
|
1621 XSETBIT_VECTOR (bit_vector, p);
|
|
|
1622 return bit_vector;
|
|
|
1623 }
|
|
0
|
1624 }
|
|
|
1625
|
|
|
1626
|
|
380
|
1627 /************************************************************************/
|
|
|
1628 /* Compiled-function allocation */
|
|
|
1629 /************************************************************************/
|
|
|
1630
|
|
|
1631 DECLARE_FIXED_TYPE_ALLOC (compiled_function, Lisp_Compiled_Function);
|
|
0
|
1632 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_compiled_function 1000
|
|
|
1633
|
|
|
1634 static Lisp_Object
|
|
|
1635 make_compiled_function (int make_pure)
|
|
|
1636 {
|
|
380
|
1637 Lisp_Compiled_Function *f;
|
|
|
1638 Lisp_Object fun;
|
|
|
1639 size_t size = sizeof (Lisp_Compiled_Function);
|
|
0
|
1640
|
|
|
1641 if (make_pure && check_purespace (size))
|
|
|
1642 {
|
|
380
|
1643 f = (Lisp_Compiled_Function *) (PUREBEG + pure_bytes_used);
|
|
|
1644 set_lheader_implementation (&(f->lheader), lrecord_compiled_function);
|
|
211
|
1645 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
380
|
1646 f->lheader.pure = 1;
|
|
211
|
1647 #endif
|
|
272
|
1648 pure_bytes_used += size;
|
|
380
|
1649 bump_purestat (&purestat_function, size);
|
|
0
|
1650 }
|
|
|
1651 else
|
|
|
1652 {
|
|
380
|
1653 ALLOCATE_FIXED_TYPE (compiled_function, Lisp_Compiled_Function, f);
|
|
|
1654 set_lheader_implementation (&(f->lheader), lrecord_compiled_function);
|
|
0
|
1655 }
|
|
380
|
1656 f->stack_depth = 0;
|
|
|
1657 f->specpdl_depth = 0;
|
|
|
1658 f->flags.documentationp = 0;
|
|
|
1659 f->flags.interactivep = 0;
|
|
|
1660 f->flags.domainp = 0; /* I18N3 */
|
|
|
1661 f->instructions = Qzero;
|
|
|
1662 f->constants = Qzero;
|
|
|
1663 f->arglist = Qnil;
|
|
|
1664 f->doc_and_interactive = Qnil;
|
|
0
|
1665 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
380
|
1666 f->annotated = Qnil;
|
|
0
|
1667 #endif
|
|
380
|
1668 XSETCOMPILED_FUNCTION (fun, f);
|
|
|
1669 return fun;
|
|
0
|
1670 }
|
|
|
1671
|
|
20
|
1672 DEFUN ("make-byte-code", Fmake_byte_code, 4, MANY, 0, /*
|
|
272
|
1673 Return a new compiled-function object.
|
|
380
|
1674 Usage: (arglist instructions constants stack-depth
|
|
|
1675 &optional doc-string interactive)
|
|
0
|
1676 Note that, unlike all other emacs-lisp functions, calling this with five
|
|
|
1677 arguments is NOT the same as calling it with six arguments, the last of
|
|
|
1678 which is nil. If the INTERACTIVE arg is specified as nil, then that means
|
|
|
1679 that this function was defined with `(interactive)'. If the arg is not
|
|
|
1680 specified, then that means the function is not interactive.
|
|
|
1681 This is terrible behavior which is retained for compatibility with old
|
|
380
|
1682 `.elc' files which expect these semantics.
|
|
20
|
1683 */
|
|
|
1684 (int nargs, Lisp_Object *args))
|
|
0
|
1685 {
|
|
380
|
1686 /* In a non-insane world this function would have this arglist...
|
|
|
1687 (arglist instructions constants stack_depth &optional doc_string interactive)
|
|
0
|
1688 */
|
|
380
|
1689 Lisp_Object fun = make_compiled_function (purify_flag);
|
|
|
1690 Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (fun);
|
|
|
1691
|
|
0
|
1692 Lisp_Object arglist = args[0];
|
|
|
1693 Lisp_Object instructions = args[1];
|
|
|
1694 Lisp_Object constants = args[2];
|
|
380
|
1695 Lisp_Object stack_depth = args[3];
|
|
272
|
1696 Lisp_Object doc_string = (nargs > 4) ? args[4] : Qnil;
|
|
|
1697 Lisp_Object interactive = (nargs > 5) ? args[5] : Qunbound;
|
|
380
|
1698
|
|
0
|
1699 /* Don't purecopy the doc references in instructions because it's
|
|
|
1700 wasteful; they will get fixed up later.
|
|
|
1701
|
|
|
1702 #### If something goes wrong and they don't get fixed up,
|
|
|
1703 we're screwed, because pure stuff isn't marked and thus the
|
|
|
1704 cons references won't be marked and will get reused.
|
|
|
1705
|
|
|
1706 Note: there will be a window after the byte code is created and
|
|
|
1707 before the doc references are fixed up in which there will be
|
|
|
1708 impure objects inside a pure object, which apparently won't
|
|
380
|
1709 get marked, leading to trouble. But during that entire window,
|
|
0
|
1710 the objects are sitting on Vload_force_doc_string_list, which
|
|
|
1711 is staticpro'd, so we're OK. */
|
|
380
|
1712 Lisp_Object (*cons) (Lisp_Object, Lisp_Object)
|
|
|
1713 = purify_flag ? pure_cons : Fcons;
|
|
|
1714
|
|
|
1715 if (nargs < 4 || nargs > 6)
|
|
183
|
1716 return Fsignal (Qwrong_number_of_arguments,
|
|
0
|
1717 list2 (intern ("make-byte-code"), make_int (nargs)));
|
|
|
1718
|
|
380
|
1719 /* Check for valid formal parameter list now, to allow us to use
|
|
|
1720 SPECBIND_FAST_UNSAFE() later in funcall_compiled_function(). */
|
|
|
1721 {
|
|
|
1722 Lisp_Object symbol, tail;
|
|
|
1723 EXTERNAL_LIST_LOOP_3 (symbol, arglist, tail)
|
|
|
1724 {
|
|
|
1725 CHECK_SYMBOL (symbol);
|
|
|
1726 if (EQ (symbol, Qt) ||
|
|
|
1727 EQ (symbol, Qnil) ||
|
|
|
1728 SYMBOL_IS_KEYWORD (symbol))
|
|
|
1729 signal_simple_error_2
|
|
|
1730 ("Invalid constant symbol in formal parameter list",
|
|
|
1731 symbol, arglist);
|
|
|
1732 }
|
|
|
1733 }
|
|
|
1734 f->arglist = arglist;
|
|
|
1735
|
|
|
1736 /* `instructions' is a string or a cons (string . int) for a
|
|
0
|
1737 lazy-loaded function. */
|
|
|
1738 if (CONSP (instructions))
|
|
|
1739 {
|
|
|
1740 CHECK_STRING (XCAR (instructions));
|
|
|
1741 CHECK_INT (XCDR (instructions));
|
|
|
1742 }
|
|
|
1743 else
|
|
|
1744 {
|
|
|
1745 CHECK_STRING (instructions);
|
|
380
|
1746 }
|
|
|
1747 f->instructions = instructions;
|
|
|
1748
|
|
|
1749 if (!NILP (constants))
|
|
|
1750 CHECK_VECTOR (constants);
|
|
|
1751 f->constants = constants;
|
|
|
1752
|
|
|
1753 CHECK_NATNUM (stack_depth);
|
|
|
1754 f->stack_depth = XINT (stack_depth);
|
|
|
1755
|
|
|
1756 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1757 if (!NILP (Vcurrent_compiled_function_annotation))
|
|
|
1758 f->annotated = Fpurecopy (Vcurrent_compiled_function_annotation);
|
|
|
1759 else if (!NILP (Vload_file_name_internal_the_purecopy))
|
|
|
1760 f->annotated = Vload_file_name_internal_the_purecopy;
|
|
|
1761 else if (!NILP (Vload_file_name_internal))
|
|
|
1762 {
|
|
|
1763 struct gcpro gcpro1;
|
|
|
1764 GCPRO1 (fun); /* don't let fun get reaped */
|
|
|
1765 Vload_file_name_internal_the_purecopy =
|
|
|
1766 Fpurecopy (Ffile_name_nondirectory (Vload_file_name_internal));
|
|
|
1767 f->annotated = Vload_file_name_internal_the_purecopy;
|
|
|
1768 UNGCPRO;
|
|
0
|
1769 }
|
|
380
|
1770 #endif /* COMPILED_FUNCTION_ANNOTATION_HACK */
|
|
|
1771
|
|
|
1772 /* doc_string may be nil, string, int, or a cons (string . int).
|
|
|
1773 interactive may be list or string (or unbound). */
|
|
|
1774 f->doc_and_interactive = Qunbound;
|
|
|
1775 #ifdef I18N3
|
|
|
1776 if ((f->flags.domainp = !NILP (Vfile_domain)) != 0)
|
|
|
1777 f->doc_and_interactive = Vfile_domain;
|
|
|
1778 #endif
|
|
|
1779 if ((f->flags.interactivep = !UNBOUNDP (interactive)) != 0)
|
|
|
1780 {
|
|
|
1781 if (purify_flag)
|
|
|
1782 {
|
|
|
1783 interactive = Fpurecopy (interactive);
|
|
|
1784 if (STRINGP (interactive))
|
|
|
1785 bump_purestat (&purestat_string_interactive,
|
|
|
1786 pure_sizeof (interactive));
|
|
|
1787 }
|
|
|
1788 f->doc_and_interactive
|
|
|
1789 = (UNBOUNDP (f->doc_and_interactive) ? interactive :
|
|
|
1790 cons (interactive, f->doc_and_interactive));
|
|
|
1791 }
|
|
|
1792 if ((f->flags.documentationp = !NILP (doc_string)) != 0)
|
|
|
1793 {
|
|
|
1794 if (purify_flag)
|
|
|
1795 {
|
|
|
1796 doc_string = Fpurecopy (doc_string);
|
|
|
1797 if (STRINGP (doc_string))
|
|
|
1798 /* These should have been snagged by make-docfile... */
|
|
|
1799 bump_purestat (&purestat_string_documentation,
|
|
|
1800 pure_sizeof (doc_string));
|
|
|
1801 }
|
|
|
1802 f->doc_and_interactive
|
|
|
1803 = (UNBOUNDP (f->doc_and_interactive) ? doc_string :
|
|
|
1804 cons (doc_string, f->doc_and_interactive));
|
|
|
1805 }
|
|
|
1806 if (UNBOUNDP (f->doc_and_interactive))
|
|
|
1807 f->doc_and_interactive = Qnil;
|
|
0
|
1808
|
|
|
1809 if (purify_flag)
|
|
|
1810 {
|
|
380
|
1811
|
|
|
1812 if (!purified (f->arglist))
|
|
|
1813 f->arglist = Fpurecopy (f->arglist);
|
|
0
|
1814
|
|
|
1815 /* Statistics are kept differently for the constants */
|
|
380
|
1816 if (!purified (f->constants))
|
|
0
|
1817 {
|
|
|
1818 #ifdef PURESTAT
|
|
380
|
1819 int old = purecopying_function_constants;
|
|
|
1820 purecopying_function_constants = 1;
|
|
|
1821 f->constants = Fpurecopy (f->constants);
|
|
|
1822 bump_purestat (&purestat_vector_constants,
|
|
|
1823 pure_sizeof (f->constants));
|
|
|
1824 purecopying_function_constants = old;
|
|
|
1825 #else
|
|
|
1826 f->constants = Fpurecopy (f->constants);
|
|
0
|
1827 #endif /* PURESTAT */
|
|
380
|
1828 }
|
|
|
1829
|
|
|
1830 optimize_compiled_function (fun);
|
|
|
1831
|
|
|
1832 bump_purestat (&purestat_opaque_instructions,
|
|
|
1833 pure_sizeof (f->instructions));
|
|
0
|
1834 }
|
|
183
|
1835
|
|
380
|
1836 return fun;
|
|
0
|
1837 }
|
|
|
1838
|
|
|
1839
|
|
380
|
1840 /************************************************************************/
|
|
|
1841 /* Symbol allocation */
|
|
|
1842 /************************************************************************/
|
|
0
|
1843
|
|
|
1844 DECLARE_FIXED_TYPE_ALLOC (symbol, struct Lisp_Symbol);
|
|
|
1845 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_symbol 1000
|
|
|
1846
|
|
20
|
1847 DEFUN ("make-symbol", Fmake_symbol, 1, 1, 0, /*
|
|
0
|
1848 Return a newly allocated uninterned symbol whose name is NAME.
|
|
|
1849 Its value and function definition are void, and its property list is nil.
|
|
20
|
1850 */
|
|
380
|
1851 (name))
|
|
0
|
1852 {
|
|
|
1853 Lisp_Object val;
|
|
|
1854 struct Lisp_Symbol *p;
|
|
|
1855
|
|
380
|
1856 CHECK_STRING (name);
|
|
0
|
1857
|
|
|
1858 ALLOCATE_FIXED_TYPE (symbol, struct Lisp_Symbol, p);
|
|
|
1859 #ifdef LRECORD_SYMBOL
|
|
|
1860 set_lheader_implementation (&(p->lheader), lrecord_symbol);
|
|
|
1861 #endif
|
|
380
|
1862 p->name = XSTRING (name);
|
|
|
1863 p->plist = Qnil;
|
|
|
1864 p->value = Qunbound;
|
|
0
|
1865 p->function = Qunbound;
|
|
380
|
1866 p->obarray = Qnil;
|
|
371
|
1867 symbol_next (p) = 0;
|
|
0
|
1868 XSETSYMBOL (val, p);
|
|
|
1869 return val;
|
|
|
1870 }
|
|
|
1871
|
|
|
1872
|
|
380
|
1873 /************************************************************************/
|
|
|
1874 /* Extent allocation */
|
|
|
1875 /************************************************************************/
|
|
0
|
1876
|
|
|
1877 DECLARE_FIXED_TYPE_ALLOC (extent, struct extent);
|
|
|
1878 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_extent 1000
|
|
|
1879
|
|
|
1880 struct extent *
|
|
|
1881 allocate_extent (void)
|
|
|
1882 {
|
|
|
1883 struct extent *e;
|
|
|
1884
|
|
|
1885 ALLOCATE_FIXED_TYPE (extent, struct extent, e);
|
|
|
1886 set_lheader_implementation (&(e->lheader), lrecord_extent);
|
|
|
1887 extent_object (e) = Qnil;
|
|
|
1888 set_extent_start (e, -1);
|
|
|
1889 set_extent_end (e, -1);
|
|
|
1890 e->plist = Qnil;
|
|
|
1891
|
|
272
|
1892 xzero (e->flags);
|
|
0
|
1893
|
|
|
1894 extent_face (e) = Qnil;
|
|
|
1895 e->flags.end_open = 1; /* default is for endpoints to behave like markers */
|
|
|
1896 e->flags.detachable = 1;
|
|
|
1897
|
|
173
|
1898 return e;
|
|
0
|
1899 }
|
|
|
1900
|
|
|
1901
|
|
380
|
1902 /************************************************************************/
|
|
|
1903 /* Event allocation */
|
|
|
1904 /************************************************************************/
|
|
0
|
1905
|
|
|
1906 DECLARE_FIXED_TYPE_ALLOC (event, struct Lisp_Event);
|
|
|
1907 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_event 1000
|
|
|
1908
|
|
|
1909 Lisp_Object
|
|
|
1910 allocate_event (void)
|
|
|
1911 {
|
|
|
1912 Lisp_Object val;
|
|
|
1913 struct Lisp_Event *e;
|
|
|
1914
|
|
|
1915 ALLOCATE_FIXED_TYPE (event, struct Lisp_Event, e);
|
|
|
1916 set_lheader_implementation (&(e->lheader), lrecord_event);
|
|
|
1917
|
|
|
1918 XSETEVENT (val, e);
|
|
|
1919 return val;
|
|
|
1920 }
|
|
183
|
1921
|
|
0
|
1922
|
|
380
|
1923 /************************************************************************/
|
|
|
1924 /* Marker allocation */
|
|
|
1925 /************************************************************************/
|
|
0
|
1926
|
|
|
1927 DECLARE_FIXED_TYPE_ALLOC (marker, struct Lisp_Marker);
|
|
|
1928 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_marker 1000
|
|
|
1929
|
|
20
|
1930 DEFUN ("make-marker", Fmake_marker, 0, 0, 0, /*
|
|
272
|
1931 Return a new marker which does not point at any place.
|
|
20
|
1932 */
|
|
|
1933 ())
|
|
0
|
1934 {
|
|
|
1935 Lisp_Object val;
|
|
|
1936 struct Lisp_Marker *p;
|
|
|
1937
|
|
|
1938 ALLOCATE_FIXED_TYPE (marker, struct Lisp_Marker, p);
|
|
|
1939 set_lheader_implementation (&(p->lheader), lrecord_marker);
|
|
|
1940 p->buffer = 0;
|
|
|
1941 p->memind = 0;
|
|
|
1942 marker_next (p) = 0;
|
|
|
1943 marker_prev (p) = 0;
|
|
|
1944 p->insertion_type = 0;
|
|
|
1945 XSETMARKER (val, p);
|
|
|
1946 return val;
|
|
|
1947 }
|
|
|
1948
|
|
|
1949 Lisp_Object
|
|
|
1950 noseeum_make_marker (void)
|
|
|
1951 {
|
|
|
1952 Lisp_Object val;
|
|
|
1953 struct Lisp_Marker *p;
|
|
|
1954
|
|
|
1955 NOSEEUM_ALLOCATE_FIXED_TYPE (marker, struct Lisp_Marker, p);
|
|
|
1956 set_lheader_implementation (&(p->lheader), lrecord_marker);
|
|
|
1957 p->buffer = 0;
|
|
|
1958 p->memind = 0;
|
|
|
1959 marker_next (p) = 0;
|
|
|
1960 marker_prev (p) = 0;
|
|
|
1961 p->insertion_type = 0;
|
|
|
1962 XSETMARKER (val, p);
|
|
|
1963 return val;
|
|
|
1964 }
|
|
|
1965
|
|
|
1966
|
|
380
|
1967 /************************************************************************/
|
|
|
1968 /* String allocation */
|
|
|
1969 /************************************************************************/
|
|
0
|
1970
|
|
183
|
1971 /* The data for "short" strings generally resides inside of structs of type
|
|
|
1972 string_chars_block. The Lisp_String structure is allocated just like any
|
|
0
|
1973 other Lisp object (except for vectors), and these are freelisted when
|
|
|
1974 they get garbage collected. The data for short strings get compacted,
|
|
183
|
1975 but the data for large strings do not.
|
|
0
|
1976
|
|
|
1977 Previously Lisp_String structures were relocated, but this caused a lot
|
|
|
1978 of bus-errors because the C code didn't include enough GCPRO's for
|
|
|
1979 strings (since EVERY REFERENCE to a short string needed to be GCPRO'd so
|
|
|
1980 that the reference would get relocated).
|
|
|
1981
|
|
|
1982 This new method makes things somewhat bigger, but it is MUCH safer. */
|
|
|
1983
|
|
|
1984 DECLARE_FIXED_TYPE_ALLOC (string, struct Lisp_String);
|
|
|
1985 /* strings are used and freed quite often */
|
|
|
1986 /* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 10000 */
|
|
|
1987 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 1000
|
|
|
1988
|
|
207
|
1989 #ifdef LRECORD_STRING
|
|
|
1990 static Lisp_Object
|
|
|
1991 mark_string (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
|
1992 {
|
|
|
1993 struct Lisp_String *ptr = XSTRING (obj);
|
|
|
1994
|
|
|
1995 if (GC_CONSP (ptr->plist) && GC_EXTENT_INFOP (XCAR (ptr->plist)))
|
|
|
1996 flush_cached_extent_info (XCAR (ptr->plist));
|
|
|
1997 return ptr->plist;
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 static int
|
|
380
|
2001 string_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
|
|
207
|
2002 {
|
|
272
|
2003 Bytecount len;
|
|
380
|
2004 return (((len = XSTRING_LENGTH (obj1)) == XSTRING_LENGTH (obj2)) &&
|
|
|
2005 !memcmp (XSTRING_DATA (obj1), XSTRING_DATA (obj2), len));
|
|
207
|
2006 }
|
|
243
|
2007
|
|
|
2008 DEFINE_BASIC_LRECORD_IMPLEMENTATION ("string", string,
|
|
|
2009 mark_string, print_string,
|
|
|
2010 /*
|
|
|
2011 * No `finalize', or `hash' methods.
|
|
|
2012 * internal_hash already knows how
|
|
|
2013 * to hash strings and finalization
|
|
|
2014 * is done with the
|
|
|
2015 * ADDITIONAL_FREE_string macro,
|
|
|
2016 * which is the standard way to do
|
|
|
2017 * finalization when using
|
|
|
2018 * SWEEP_FIXED_TYPE_BLOCK().
|
|
|
2019 */
|
|
|
2020 0, string_equal, 0,
|
|
|
2021 struct Lisp_String);
|
|
207
|
2022 #endif /* LRECORD_STRING */
|
|
|
2023
|
|
0
|
2024 /* String blocks contain this many useful bytes. */
|
|
272
|
2025 #define STRING_CHARS_BLOCK_SIZE \
|
|
|
2026 ((Bytecount) (8192 - MALLOC_OVERHEAD - \
|
|
|
2027 ((2 * sizeof (struct string_chars_block *)) \
|
|
|
2028 + sizeof (EMACS_INT))))
|
|
0
|
2029 /* Block header for small strings. */
|
|
|
2030 struct string_chars_block
|
|
|
2031 {
|
|
|
2032 EMACS_INT pos;
|
|
|
2033 struct string_chars_block *next;
|
|
|
2034 struct string_chars_block *prev;
|
|
|
2035 /* Contents of string_chars_block->string_chars are interleaved
|
|
|
2036 string_chars structures (see below) and the actual string data */
|
|
|
2037 unsigned char string_chars[STRING_CHARS_BLOCK_SIZE];
|
|
|
2038 };
|
|
|
2039
|
|
|
2040 struct string_chars_block *first_string_chars_block;
|
|
|
2041 struct string_chars_block *current_string_chars_block;
|
|
|
2042
|
|
|
2043 /* If SIZE is the length of a string, this returns how many bytes
|
|
|
2044 * the string occupies in string_chars_block->string_chars
|
|
|
2045 * (including alignment padding).
|
|
|
2046 */
|
|
|
2047 #define STRING_FULLSIZE(s) \
|
|
|
2048 ALIGN_SIZE (((s) + 1 + sizeof (struct Lisp_String *)),\
|
|
|
2049 ALIGNOF (struct Lisp_String *))
|
|
|
2050
|
|
|
2051 #define BIG_STRING_FULLSIZE_P(fullsize) ((fullsize) >= STRING_CHARS_BLOCK_SIZE)
|
|
|
2052 #define BIG_STRING_SIZE_P(size) (BIG_STRING_FULLSIZE_P (STRING_FULLSIZE(size)))
|
|
|
2053
|
|
371
|
2054 #define CHARS_TO_STRING_CHAR(x) \
|
|
|
2055 ((struct string_chars *) \
|
|
|
2056 (((char *) (x)) - (slot_offset (struct string_chars, chars[0]))))
|
|
|
2057
|
|
|
2058
|
|
0
|
2059 struct string_chars
|
|
|
2060 {
|
|
|
2061 struct Lisp_String *string;
|
|
|
2062 unsigned char chars[1];
|
|
|
2063 };
|
|
|
2064
|
|
|
2065 struct unused_string_chars
|
|
|
2066 {
|
|
|
2067 struct Lisp_String *string;
|
|
|
2068 EMACS_INT fullsize;
|
|
|
2069 };
|
|
|
2070
|
|
|
2071 static void
|
|
|
2072 init_string_chars_alloc (void)
|
|
|
2073 {
|
|
185
|
2074 first_string_chars_block = xnew (struct string_chars_block);
|
|
0
|
2075 first_string_chars_block->prev = 0;
|
|
|
2076 first_string_chars_block->next = 0;
|
|
|
2077 first_string_chars_block->pos = 0;
|
|
|
2078 current_string_chars_block = first_string_chars_block;
|
|
|
2079 }
|
|
|
2080
|
|
|
2081 static struct string_chars *
|
|
|
2082 allocate_string_chars_struct (struct Lisp_String *string_it_goes_with,
|
|
|
2083 EMACS_INT fullsize)
|
|
|
2084 {
|
|
|
2085 struct string_chars *s_chars;
|
|
|
2086
|
|
371
|
2087 /* Allocate the string's actual data */
|
|
|
2088 if (BIG_STRING_FULLSIZE_P (fullsize))
|
|
|
2089 {
|
|
|
2090 s_chars = (struct string_chars *) xmalloc (fullsize);
|
|
|
2091 }
|
|
|
2092 else if (fullsize <=
|
|
|
2093 (countof (current_string_chars_block->string_chars)
|
|
|
2094 - current_string_chars_block->pos))
|
|
0
|
2095 {
|
|
|
2096 /* This string can fit in the current string chars block */
|
|
|
2097 s_chars = (struct string_chars *)
|
|
|
2098 (current_string_chars_block->string_chars
|
|
|
2099 + current_string_chars_block->pos);
|
|
|
2100 current_string_chars_block->pos += fullsize;
|
|
|
2101 }
|
|
|
2102 else
|
|
|
2103 {
|
|
|
2104 /* Make a new current string chars block */
|
|
382
|
2105 struct string_chars_block *new_scb = xnew (struct string_chars_block);
|
|
|
2106
|
|
|
2107 current_string_chars_block->next = new_scb;
|
|
|
2108 new_scb->prev = current_string_chars_block;
|
|
|
2109 new_scb->next = 0;
|
|
|
2110 current_string_chars_block = new_scb;
|
|
|
2111 new_scb->pos = fullsize;
|
|
0
|
2112 s_chars = (struct string_chars *)
|
|
|
2113 current_string_chars_block->string_chars;
|
|
|
2114 }
|
|
|
2115
|
|
|
2116 s_chars->string = string_it_goes_with;
|
|
|
2117
|
|
|
2118 INCREMENT_CONS_COUNTER (fullsize, "string chars");
|
|
|
2119
|
|
|
2120 return s_chars;
|
|
|
2121 }
|
|
|
2122
|
|
|
2123 Lisp_Object
|
|
|
2124 make_uninit_string (Bytecount length)
|
|
|
2125 {
|
|
|
2126 struct Lisp_String *s;
|
|
371
|
2127 struct string_chars *s_chars;
|
|
0
|
2128 EMACS_INT fullsize = STRING_FULLSIZE (length);
|
|
|
2129 Lisp_Object val;
|
|
|
2130
|
|
371
|
2131 if ((length < 0) || (fullsize <= 0))
|
|
|
2132 abort ();
|
|
0
|
2133
|
|
|
2134 /* Allocate the string header */
|
|
|
2135 ALLOCATE_FIXED_TYPE (string, struct Lisp_String, s);
|
|
207
|
2136 #ifdef LRECORD_STRING
|
|
|
2137 set_lheader_implementation (&(s->lheader), lrecord_string);
|
|
|
2138 #endif
|
|
0
|
2139
|
|
371
|
2140 s_chars = allocate_string_chars_struct (s, fullsize);
|
|
|
2141
|
|
|
2142 set_string_data (s, &(s_chars->chars[0]));
|
|
0
|
2143 set_string_length (s, length);
|
|
|
2144 s->plist = Qnil;
|
|
183
|
2145
|
|
0
|
2146 set_string_byte (s, length, 0);
|
|
|
2147
|
|
|
2148 XSETSTRING (val, s);
|
|
173
|
2149 return val;
|
|
0
|
2150 }
|
|
|
2151
|
|
|
2152 #ifdef VERIFY_STRING_CHARS_INTEGRITY
|
|
|
2153 static void verify_string_chars_integrity (void);
|
|
|
2154 #endif
|
|
183
|
2155
|
|
0
|
2156 /* Resize the string S so that DELTA bytes can be inserted starting
|
|
|
2157 at POS. If DELTA < 0, it means deletion starting at POS. If
|
|
|
2158 POS < 0, resize the string but don't copy any characters. Use
|
|
|
2159 this if you're planning on completely overwriting the string.
|
|
|
2160 */
|
|
|
2161
|
|
|
2162 void
|
|
|
2163 resize_string (struct Lisp_String *s, Bytecount pos, Bytecount delta)
|
|
|
2164 {
|
|
|
2165 #ifdef VERIFY_STRING_CHARS_INTEGRITY
|
|
|
2166 verify_string_chars_integrity ();
|
|
|
2167 #endif
|
|
|
2168
|
|
|
2169 #ifdef ERROR_CHECK_BUFPOS
|
|
|
2170 if (pos >= 0)
|
|
|
2171 {
|
|
|
2172 assert (pos <= string_length (s));
|
|
|
2173 if (delta < 0)
|
|
|
2174 assert (pos + (-delta) <= string_length (s));
|
|
|
2175 }
|
|
|
2176 else
|
|
|
2177 {
|
|
|
2178 if (delta < 0)
|
|
|
2179 assert ((-delta) <= string_length (s));
|
|
|
2180 }
|
|
183
|
2181 #endif /* ERROR_CHECK_BUFPOS */
|
|
0
|
2182
|
|
371
|
2183 if (pos >= 0 && delta < 0)
|
|
|
2184 /* If DELTA < 0, the functions below will delete the characters
|
|
|
2185 before POS. We want to delete characters *after* POS, however,
|
|
|
2186 so convert this to the appropriate form. */
|
|
|
2187 pos += -delta;
|
|
|
2188
|
|
0
|
2189 if (delta == 0)
|
|
|
2190 /* simplest case: no size change. */
|
|
|
2191 return;
|
|
371
|
2192 else
|
|
0
|
2193 {
|
|
371
|
2194 Bytecount oldfullsize = STRING_FULLSIZE (string_length (s));
|
|
|
2195 Bytecount newfullsize = STRING_FULLSIZE (string_length (s) + delta);
|
|
|
2196
|
|
|
2197 if (oldfullsize == newfullsize)
|
|
0
|
2198 {
|
|
371
|
2199 /* next simplest case; size change but the necessary
|
|
|
2200 allocation size won't change (up or down; code somewhere
|
|
|
2201 depends on there not being any unused allocation space,
|
|
|
2202 modulo any alignment constraints). */
|
|
0
|
2203 if (pos >= 0)
|
|
|
2204 {
|
|
371
|
2205 Bufbyte *addroff = pos + string_data (s);
|
|
|
2206
|
|
|
2207 memmove (addroff + delta, addroff,
|
|
|
2208 /* +1 due to zero-termination. */
|
|
|
2209 string_length (s) + 1 - pos);
|
|
0
|
2210 }
|
|
|
2211 }
|
|
371
|
2212 else if (BIG_STRING_FULLSIZE_P (oldfullsize) &&
|
|
|
2213 BIG_STRING_FULLSIZE_P (newfullsize))
|
|
0
|
2214 {
|
|
371
|
2215 /* next simplest case; the string is big enough to be malloc()ed
|
|
|
2216 itself, so we just realloc.
|
|
|
2217
|
|
|
2218 It's important not to let the string get below the threshold
|
|
|
2219 for making big strings and still remain malloc()ed; if that
|
|
|
2220 were the case, repeated calls to this function on the same
|
|
|
2221 string could result in memory leakage. */
|
|
|
2222 set_string_data (s, (Bufbyte *) xrealloc (string_data (s),
|
|
|
2223 newfullsize));
|
|
0
|
2224 if (pos >= 0)
|
|
|
2225 {
|
|
183
|
2226 Bufbyte *addroff = pos + string_data (s);
|
|
0
|
2227
|
|
|
2228 memmove (addroff + delta, addroff,
|
|
|
2229 /* +1 due to zero-termination. */
|
|
|
2230 string_length (s) + 1 - pos);
|
|
|
2231 }
|
|
|
2232 }
|
|
|
2233 else
|
|
|
2234 {
|
|
371
|
2235 /* worst case. We make a new string_chars struct and copy
|
|
|
2236 the string's data into it, inserting/deleting the delta
|
|
|
2237 in the process. The old string data will either get
|
|
|
2238 freed by us (if it was malloc()ed) or will be reclaimed
|
|
|
2239 in the normal course of garbage collection. */
|
|
|
2240 struct string_chars *s_chars =
|
|
|
2241 allocate_string_chars_struct (s, newfullsize);
|
|
|
2242 Bufbyte *new_addr = &(s_chars->chars[0]);
|
|
|
2243 Bufbyte *old_addr = string_data (s);
|
|
0
|
2244 if (pos >= 0)
|
|
|
2245 {
|
|
371
|
2246 memcpy (new_addr, old_addr, pos);
|
|
|
2247 memcpy (new_addr + pos + delta, old_addr + pos,
|
|
0
|
2248 string_length (s) + 1 - pos);
|
|
|
2249 }
|
|
371
|
2250 set_string_data (s, new_addr);
|
|
|
2251 if (BIG_STRING_FULLSIZE_P (oldfullsize))
|
|
|
2252 xfree (old_addr);
|
|
|
2253 else
|
|
|
2254 {
|
|
|
2255 /* We need to mark this chunk of the string_chars_block
|
|
|
2256 as unused so that compact_string_chars() doesn't
|
|
|
2257 freak. */
|
|
|
2258 struct string_chars *old_s_chars =
|
|
|
2259 (struct string_chars *) ((char *) old_addr -
|
|
|
2260 sizeof (struct Lisp_String *));
|
|
|
2261 /* Sanity check to make sure we aren't hosed by strange
|
|
|
2262 alignment/padding. */
|
|
|
2263 assert (old_s_chars->string == s);
|
|
|
2264 MARK_STRUCT_AS_FREE (old_s_chars);
|
|
|
2265 ((struct unused_string_chars *) old_s_chars)->fullsize =
|
|
|
2266 oldfullsize;
|
|
|
2267 }
|
|
0
|
2268 }
|
|
371
|
2269
|
|
|
2270 set_string_length (s, string_length (s) + delta);
|
|
|
2271 /* If pos < 0, the string won't be zero-terminated.
|
|
|
2272 Terminate now just to make sure. */
|
|
|
2273 string_data (s)[string_length (s)] = '\0';
|
|
|
2274
|
|
|
2275 if (pos >= 0)
|
|
|
2276 {
|
|
|
2277 Lisp_Object string;
|
|
|
2278
|
|
|
2279 XSETSTRING (string, s);
|
|
|
2280 /* We also have to adjust all of the extent indices after the
|
|
|
2281 place we did the change. We say "pos - 1" because
|
|
|
2282 adjust_extents() is exclusive of the starting position
|
|
|
2283 passed to it. */
|
|
|
2284 adjust_extents (string, pos - 1, string_length (s),
|
|
|
2285 delta);
|
|
|
2286 }
|
|
0
|
2287 }
|
|
|
2288
|
|
|
2289 #ifdef VERIFY_STRING_CHARS_INTEGRITY
|
|
|
2290 verify_string_chars_integrity ();
|
|
|
2291 #endif
|
|
|
2292 }
|
|
|
2293
|
|
70
|
2294 #ifdef MULE
|
|
|
2295
|
|
|
2296 void
|
|
|
2297 set_string_char (struct Lisp_String *s, Charcount i, Emchar c)
|
|
|
2298 {
|
|
|
2299 Bufbyte newstr[MAX_EMCHAR_LEN];
|
|
|
2300 Bytecount bytoff = charcount_to_bytecount (string_data (s), i);
|
|
382
|
2301 Bytecount oldlen = charcount_to_bytecount (string_data (s) + bytoff, 1);
|
|
|
2302 Bytecount newlen = set_charptr_emchar (newstr, c);
|
|
70
|
2303
|
|
|
2304 if (oldlen != newlen)
|
|
|
2305 resize_string (s, bytoff, newlen - oldlen);
|
|
185
|
2306 /* Remember, string_data (s) might have changed so we can't cache it. */
|
|
70
|
2307 memcpy (string_data (s) + bytoff, newstr, newlen);
|
|
|
2308 }
|
|
|
2309
|
|
|
2310 #endif /* MULE */
|
|
|
2311
|
|
20
|
2312 DEFUN ("make-string", Fmake_string, 2, 2, 0, /*
|
|
272
|
2313 Return a new string of length LENGTH, with each character being INIT.
|
|
0
|
2314 LENGTH must be an integer and INIT must be a character.
|
|
20
|
2315 */
|
|
|
2316 (length, init))
|
|
0
|
2317 {
|
|
|
2318 CHECK_NATNUM (length);
|
|
|
2319 CHECK_CHAR_COERCE_INT (init);
|
|
|
2320 {
|
|
380
|
2321 Bufbyte init_str[MAX_EMCHAR_LEN];
|
|
|
2322 int len = set_charptr_emchar (init_str, XCHAR (init));
|
|
|
2323 Lisp_Object val = make_uninit_string (len * XINT (length));
|
|
|
2324
|
|
0
|
2325 if (len == 1)
|
|
|
2326 /* Optimize the single-byte case */
|
|
14
|
2327 memset (XSTRING_DATA (val), XCHAR (init), XSTRING_LENGTH (val));
|
|
0
|
2328 else
|
|
|
2329 {
|
|
380
|
2330 int i;
|
|
14
|
2331 Bufbyte *ptr = XSTRING_DATA (val);
|
|
0
|
2332
|
|
380
|
2333 for (i = XINT (length); i; i--)
|
|
|
2334 {
|
|
|
2335 Bufbyte *init_ptr = init_str;
|
|
|
2336 switch (len)
|
|
|
2337 {
|
|
|
2338 case 4: *ptr++ = *init_ptr++;
|
|
|
2339 case 3: *ptr++ = *init_ptr++;
|
|
|
2340 case 2: *ptr++ = *init_ptr++;
|
|
|
2341 case 1: *ptr++ = *init_ptr++;
|
|
|
2342 }
|
|
|
2343 }
|
|
0
|
2344 }
|
|
380
|
2345 return val;
|
|
0
|
2346 }
|
|
|
2347 }
|
|
|
2348
|
|
278
|
2349 DEFUN ("string", Fstring, 0, MANY, 0, /*
|
|
|
2350 Concatenate all the argument characters and make the result a string.
|
|
|
2351 */
|
|
|
2352 (int nargs, Lisp_Object *args))
|
|
|
2353 {
|
|
|
2354 Bufbyte *storage = alloca_array (Bufbyte, nargs * MAX_EMCHAR_LEN);
|
|
|
2355 Bufbyte *p = storage;
|
|
|
2356
|
|
|
2357 for (; nargs; nargs--, args++)
|
|
|
2358 {
|
|
|
2359 Lisp_Object lisp_char = *args;
|
|
|
2360 CHECK_CHAR_COERCE_INT (lisp_char);
|
|
|
2361 p += set_charptr_emchar (p, XCHAR (lisp_char));
|
|
|
2362 }
|
|
|
2363 return make_string (storage, p - storage);
|
|
|
2364 }
|
|
|
2365
|
|
0
|
2366 /* Take some raw memory, which MUST already be in internal format,
|
|
272
|
2367 and package it up into a Lisp string. */
|
|
0
|
2368 Lisp_Object
|
|
|
2369 make_string (CONST Bufbyte *contents, Bytecount length)
|
|
|
2370 {
|
|
|
2371 Lisp_Object val;
|
|
70
|
2372
|
|
|
2373 /* Make sure we find out about bad make_string's when they happen */
|
|
|
2374 #if defined (ERROR_CHECK_BUFPOS) && defined (MULE)
|
|
|
2375 bytecount_to_charcount (contents, length); /* Just for the assertions */
|
|
|
2376 #endif
|
|
183
|
2377
|
|
0
|
2378 val = make_uninit_string (length);
|
|
14
|
2379 memcpy (XSTRING_DATA (val), contents, length);
|
|
173
|
2380 return val;
|
|
0
|
2381 }
|
|
|
2382
|
|
|
2383 /* Take some raw memory, encoded in some external data format,
|
|
|
2384 and convert it into a Lisp string. */
|
|
|
2385 Lisp_Object
|
|
|
2386 make_ext_string (CONST Extbyte *contents, EMACS_INT length,
|
|
|
2387 enum external_data_format fmt)
|
|
|
2388 {
|
|
272
|
2389 Bufbyte *intstr;
|
|
0
|
2390 Bytecount intlen;
|
|
|
2391
|
|
|
2392 GET_CHARPTR_INT_DATA_ALLOCA (contents, length, fmt, intstr, intlen);
|
|
|
2393 return make_string (intstr, intlen);
|
|
|
2394 }
|
|
|
2395
|
|
|
2396 Lisp_Object
|
|
|
2397 build_string (CONST char *str)
|
|
|
2398 {
|
|
185
|
2399 /* Some strlen's crash and burn if passed null. */
|
|
|
2400 return make_string ((CONST Bufbyte *) str, (str ? strlen(str) : 0));
|
|
0
|
2401 }
|
|
|
2402
|
|
|
2403 Lisp_Object
|
|
|
2404 build_ext_string (CONST char *str, enum external_data_format fmt)
|
|
|
2405 {
|
|
185
|
2406 /* Some strlen's crash and burn if passed null. */
|
|
272
|
2407 return make_ext_string ((CONST Extbyte *) str, (str ? strlen(str) : 0), fmt);
|
|
0
|
2408 }
|
|
|
2409
|
|
|
2410 Lisp_Object
|
|
|
2411 build_translated_string (CONST char *str)
|
|
|
2412 {
|
|
|
2413 return build_string (GETTEXT (str));
|
|
|
2414 }
|
|
|
2415
|
|
|
2416
|
|
|
2417 /************************************************************************/
|
|
|
2418 /* lcrecord lists */
|
|
|
2419 /************************************************************************/
|
|
|
2420
|
|
|
2421 /* Lcrecord lists are used to manage the allocation of particular
|
|
|
2422 sorts of lcrecords, to avoid calling alloc_lcrecord() (and thus
|
|
|
2423 malloc() and garbage-collection junk) as much as possible.
|
|
|
2424 It is similar to the Blocktype class.
|
|
|
2425
|
|
|
2426 It works like this:
|
|
|
2427
|
|
|
2428 1) Create an lcrecord-list object using make_lcrecord_list().
|
|
|
2429 This is often done at initialization. Remember to staticpro
|
|
|
2430 this object! The arguments to make_lcrecord_list() are the
|
|
|
2431 same as would be passed to alloc_lcrecord().
|
|
|
2432 2) Instead of calling alloc_lcrecord(), call allocate_managed_lcrecord()
|
|
|
2433 and pass the lcrecord-list earlier created.
|
|
|
2434 3) When done with the lcrecord, call free_managed_lcrecord().
|
|
|
2435 The standard freeing caveats apply: ** make sure there are no
|
|
|
2436 pointers to the object anywhere! **
|
|
|
2437 4) Calling free_managed_lcrecord() is just like kissing the
|
|
|
2438 lcrecord goodbye as if it were garbage-collected. This means:
|
|
|
2439 -- the contents of the freed lcrecord are undefined, and the
|
|
|
2440 contents of something produced by allocate_managed_lcrecord()
|
|
|
2441 are undefined, just like for alloc_lcrecord().
|
|
|
2442 -- the mark method for the lcrecord's type will *NEVER* be called
|
|
|
2443 on freed lcrecords.
|
|
|
2444 -- the finalize method for the lcrecord's type will be called
|
|
|
2445 at the time that free_managed_lcrecord() is called.
|
|
|
2446
|
|
|
2447 */
|
|
|
2448
|
|
|
2449 static Lisp_Object
|
|
|
2450 mark_lcrecord_list (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
|
2451 {
|
|
|
2452 struct lcrecord_list *list = XLCRECORD_LIST (obj);
|
|
|
2453 Lisp_Object chain = list->free;
|
|
|
2454
|
|
|
2455 while (!NILP (chain))
|
|
|
2456 {
|
|
|
2457 struct lrecord_header *lheader = XRECORD_LHEADER (chain);
|
|
|
2458 struct free_lcrecord_header *free_header =
|
|
|
2459 (struct free_lcrecord_header *) lheader;
|
|
14
|
2460
|
|
|
2461 #ifdef ERROR_CHECK_GC
|
|
0
|
2462 CONST struct lrecord_implementation *implementation
|
|
211
|
2463 = LHEADER_IMPLEMENTATION(lheader);
|
|
80
|
2464
|
|
0
|
2465 /* There should be no other pointers to the free list. */
|
|
|
2466 assert (!MARKED_RECORD_HEADER_P (lheader));
|
|
|
2467 /* Only lcrecords should be here. */
|
|
|
2468 assert (!implementation->basic_p);
|
|
|
2469 /* Only free lcrecords should be here. */
|
|
|
2470 assert (free_header->lcheader.free);
|
|
|
2471 /* The type of the lcrecord must be right. */
|
|
|
2472 assert (implementation == list->implementation);
|
|
|
2473 /* So must the size. */
|
|
|
2474 assert (implementation->static_size == 0
|
|
|
2475 || implementation->static_size == list->size);
|
|
14
|
2476 #endif /* ERROR_CHECK_GC */
|
|
80
|
2477
|
|
0
|
2478 MARK_RECORD_HEADER (lheader);
|
|
|
2479 chain = free_header->chain;
|
|
|
2480 }
|
|
183
|
2481
|
|
0
|
2482 return Qnil;
|
|
|
2483 }
|
|
|
2484
|
|
243
|
2485 DEFINE_LRECORD_IMPLEMENTATION ("lcrecord-list", lcrecord_list,
|
|
|
2486 mark_lcrecord_list, internal_object_printer,
|
|
|
2487 0, 0, 0, struct lcrecord_list);
|
|
0
|
2488 Lisp_Object
|
|
272
|
2489 make_lcrecord_list (size_t size,
|
|
0
|
2490 CONST struct lrecord_implementation *implementation)
|
|
|
2491 {
|
|
185
|
2492 struct lcrecord_list *p = alloc_lcrecord_type (struct lcrecord_list,
|
|
|
2493 lrecord_lcrecord_list);
|
|
272
|
2494 Lisp_Object val;
|
|
0
|
2495
|
|
|
2496 p->implementation = implementation;
|
|
|
2497 p->size = size;
|
|
|
2498 p->free = Qnil;
|
|
|
2499 XSETLCRECORD_LIST (val, p);
|
|
|
2500 return val;
|
|
|
2501 }
|
|
|
2502
|
|
|
2503 Lisp_Object
|
|
|
2504 allocate_managed_lcrecord (Lisp_Object lcrecord_list)
|
|
|
2505 {
|
|
|
2506 struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list);
|
|
|
2507 if (!NILP (list->free))
|
|
|
2508 {
|
|
|
2509 Lisp_Object val = list->free;
|
|
|
2510 struct free_lcrecord_header *free_header =
|
|
|
2511 (struct free_lcrecord_header *) XPNTR (val);
|
|
|
2512
|
|
|
2513 #ifdef ERROR_CHECK_GC
|
|
|
2514 struct lrecord_header *lheader =
|
|
|
2515 (struct lrecord_header *) free_header;
|
|
|
2516 CONST struct lrecord_implementation *implementation
|
|
211
|
2517 = LHEADER_IMPLEMENTATION (lheader);
|
|
0
|
2518
|
|
|
2519 /* There should be no other pointers to the free list. */
|
|
|
2520 assert (!MARKED_RECORD_HEADER_P (lheader));
|
|
|
2521 /* Only lcrecords should be here. */
|
|
|
2522 assert (!implementation->basic_p);
|
|
|
2523 /* Only free lcrecords should be here. */
|
|
|
2524 assert (free_header->lcheader.free);
|
|
|
2525 /* The type of the lcrecord must be right. */
|
|
|
2526 assert (implementation == list->implementation);
|
|
|
2527 /* So must the size. */
|
|
|
2528 assert (implementation->static_size == 0
|
|
|
2529 || implementation->static_size == list->size);
|
|
183
|
2530 #endif /* ERROR_CHECK_GC */
|
|
0
|
2531 list->free = free_header->chain;
|
|
|
2532 free_header->lcheader.free = 0;
|
|
|
2533 return val;
|
|
|
2534 }
|
|
|
2535 else
|
|
|
2536 {
|
|
272
|
2537 Lisp_Object val;
|
|
185
|
2538
|
|
|
2539 XSETOBJ (val, Lisp_Type_Record,
|
|
0
|
2540 alloc_lcrecord (list->size, list->implementation));
|
|
185
|
2541 return val;
|
|
0
|
2542 }
|
|
|
2543 }
|
|
|
2544
|
|
|
2545 void
|
|
|
2546 free_managed_lcrecord (Lisp_Object lcrecord_list, Lisp_Object lcrecord)
|
|
|
2547 {
|
|
|
2548 struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list);
|
|
|
2549 struct free_lcrecord_header *free_header =
|
|
|
2550 (struct free_lcrecord_header *) XPNTR (lcrecord);
|
|
|
2551 struct lrecord_header *lheader =
|
|
|
2552 (struct lrecord_header *) free_header;
|
|
|
2553 CONST struct lrecord_implementation *implementation
|
|
211
|
2554 = LHEADER_IMPLEMENTATION (lheader);
|
|
0
|
2555
|
|
|
2556 #ifdef ERROR_CHECK_GC
|
|
|
2557 /* Make sure the size is correct. This will catch, for example,
|
|
|
2558 putting a window configuration on the wrong free list. */
|
|
|
2559 if (implementation->size_in_bytes_method)
|
|
380
|
2560 assert (implementation->size_in_bytes_method (lheader) == list->size);
|
|
0
|
2561 else
|
|
|
2562 assert (implementation->static_size == list->size);
|
|
183
|
2563 #endif /* ERROR_CHECK_GC */
|
|
0
|
2564
|
|
|
2565 if (implementation->finalizer)
|
|
380
|
2566 implementation->finalizer (lheader, 0);
|
|
0
|
2567 free_header->chain = list->free;
|
|
|
2568 free_header->lcheader.free = 1;
|
|
|
2569 list->free = lcrecord;
|
|
|
2570 }
|
|
|
2571
|
|
|
2572
|
|
380
|
2573 /************************************************************************/
|
|
|
2574 /* Purity of essence, peace on earth */
|
|
|
2575 /************************************************************************/
|
|
0
|
2576
|
|
|
2577 static int symbols_initialized;
|
|
|
2578
|
|
|
2579 Lisp_Object
|
|
|
2580 make_pure_string (CONST Bufbyte *data, Bytecount length,
|
|
|
2581 Lisp_Object plist, int no_need_to_copy_data)
|
|
|
2582 {
|
|
382
|
2583 Lisp_String *s;
|
|
|
2584 size_t size = sizeof (Lisp_String) +
|
|
272
|
2585 (no_need_to_copy_data ? 0 : (length + 1)); /* + 1 for terminating 0 */
|
|
0
|
2586 size = ALIGN_SIZE (size, ALIGNOF (Lisp_Object));
|
|
|
2587
|
|
|
2588 if (symbols_initialized && !pure_lossage)
|
|
|
2589 {
|
|
|
2590 /* Try to share some names. Saves a few kbytes. */
|
|
|
2591 Lisp_Object tem = oblookup (Vobarray, data, length);
|
|
|
2592 if (SYMBOLP (tem))
|
|
|
2593 {
|
|
|
2594 s = XSYMBOL (tem)->name;
|
|
|
2595 if (!PURIFIED (s)) abort ();
|
|
382
|
2596
|
|
|
2597 {
|
|
|
2598 Lisp_Object string;
|
|
|
2599 XSETSTRING (string, s);
|
|
|
2600 return string;
|
|
|
2601 }
|
|
0
|
2602 }
|
|
|
2603 }
|
|
|
2604
|
|
|
2605 if (!check_purespace (size))
|
|
173
|
2606 return make_string (data, length);
|
|
0
|
2607
|
|
382
|
2608 s = (Lisp_String *) (PUREBEG + pure_bytes_used);
|
|
207
|
2609 #ifdef LRECORD_STRING
|
|
|
2610 set_lheader_implementation (&(s->lheader), lrecord_string);
|
|
211
|
2611 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
2612 s->lheader.pure = 1;
|
|
|
2613 #endif
|
|
207
|
2614 #endif
|
|
0
|
2615 set_string_length (s, length);
|
|
|
2616 if (no_need_to_copy_data)
|
|
|
2617 {
|
|
|
2618 set_string_data (s, (Bufbyte *) data);
|
|
|
2619 }
|
|
|
2620 else
|
|
|
2621 {
|
|
382
|
2622 set_string_data (s, (Bufbyte *) s + sizeof (Lisp_String));
|
|
0
|
2623 memcpy (string_data (s), data, length);
|
|
|
2624 set_string_byte (s, length, 0);
|
|
|
2625 }
|
|
|
2626 s->plist = Qnil;
|
|
272
|
2627 pure_bytes_used += size;
|
|
0
|
2628
|
|
|
2629 #ifdef PURESTAT
|
|
|
2630 bump_purestat (&purestat_string_all, size);
|
|
380
|
2631 if (purecopying_function_constants)
|
|
0
|
2632 bump_purestat (&purestat_string_other_function, size);
|
|
183
|
2633 #endif /* PURESTAT */
|
|
0
|
2634
|
|
|
2635 /* Do this after the official "completion" of the purecopying. */
|
|
|
2636 s->plist = Fpurecopy (plist);
|
|
|
2637
|
|
382
|
2638 {
|
|
|
2639 Lisp_Object string;
|
|
|
2640 XSETSTRING (string, s);
|
|
|
2641 return string;
|
|
|
2642 }
|
|
0
|
2643 }
|
|
|
2644
|
|
|
2645
|
|
|
2646 Lisp_Object
|
|
|
2647 make_pure_pname (CONST Bufbyte *data, Bytecount length,
|
|
|
2648 int no_need_to_copy_data)
|
|
|
2649 {
|
|
|
2650 Lisp_Object name = make_pure_string (data, length, Qnil,
|
|
|
2651 no_need_to_copy_data);
|
|
|
2652 bump_purestat (&purestat_string_pname, pure_sizeof (name));
|
|
|
2653
|
|
|
2654 /* We've made (at least) Qnil now, and Vobarray will soon be set up. */
|
|
|
2655 symbols_initialized = 1;
|
|
|
2656
|
|
173
|
2657 return name;
|
|
0
|
2658 }
|
|
|
2659
|
|
|
2660
|
|
|
2661 Lisp_Object
|
|
|
2662 pure_cons (Lisp_Object car, Lisp_Object cdr)
|
|
|
2663 {
|
|
382
|
2664 Lisp_Cons *c;
|
|
|
2665
|
|
|
2666 if (!check_purespace (sizeof (Lisp_Cons)))
|
|
173
|
2667 return Fcons (Fpurecopy (car), Fpurecopy (cdr));
|
|
0
|
2668
|
|
382
|
2669 c = (Lisp_Cons *) (PUREBEG + pure_bytes_used);
|
|
207
|
2670 #ifdef LRECORD_CONS
|
|
|
2671 set_lheader_implementation (&(c->lheader), lrecord_cons);
|
|
211
|
2672 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
2673 c->lheader.pure = 1;
|
|
|
2674 #endif
|
|
207
|
2675 #endif
|
|
382
|
2676 pure_bytes_used += sizeof (Lisp_Cons);
|
|
|
2677 bump_purestat (&purestat_cons, sizeof (Lisp_Cons));
|
|
0
|
2678
|
|
207
|
2679 c->car = Fpurecopy (car);
|
|
|
2680 c->cdr = Fpurecopy (cdr);
|
|
382
|
2681
|
|
|
2682 {
|
|
|
2683 Lisp_Object cons;
|
|
|
2684 XSETCONS (cons, c);
|
|
|
2685 return cons;
|
|
|
2686 }
|
|
0
|
2687 }
|
|
|
2688
|
|
|
2689 Lisp_Object
|
|
|
2690 pure_list (int nargs, Lisp_Object *args)
|
|
|
2691 {
|
|
272
|
2692 Lisp_Object val = Qnil;
|
|
0
|
2693
|
|
|
2694 for (--nargs; nargs >= 0; nargs--)
|
|
272
|
2695 val = pure_cons (args[nargs], val);
|
|
|
2696
|
|
|
2697 return val;
|
|
0
|
2698 }
|
|
|
2699
|
|
|
2700 #ifdef LISP_FLOAT_TYPE
|
|
|
2701
|
|
272
|
2702 static Lisp_Object
|
|
0
|
2703 make_pure_float (double num)
|
|
|
2704 {
|
|
|
2705 struct Lisp_Float *f;
|
|
|
2706 Lisp_Object val;
|
|
|
2707
|
|
272
|
2708 /* Make sure that PUREBEG + pure_bytes_used is aligned on at least a sizeof
|
|
0
|
2709 (double) boundary. Some architectures (like the sparc) require
|
|
|
2710 this, and I suspect that floats are rare enough that it's no
|
|
|
2711 tragedy for those that don't. */
|
|
|
2712 {
|
|
|
2713 #if defined (__GNUC__) && (__GNUC__ >= 2)
|
|
|
2714 /* In gcc, we can directly ask what the alignment constraints of a
|
|
|
2715 structure are, but in general, that's not possible... Arrgh!!
|
|
|
2716 */
|
|
|
2717 int alignment = __alignof (struct Lisp_Float);
|
|
|
2718 #else /* !GNUC */
|
|
|
2719 /* Best guess is to make the `double' slot be aligned to the size
|
|
|
2720 of double (which is probably 8 bytes). This assumes that it's
|
|
|
2721 ok to align the beginning of the structure to the same boundary
|
|
|
2722 that the `double' slot in it is supposed to be aligned to; this
|
|
|
2723 should be ok because presumably there is padding in the layout
|
|
|
2724 of the struct to account for this.
|
|
|
2725 */
|
|
|
2726 int alignment = sizeof (float_data (f));
|
|
183
|
2727 #endif /* !GNUC */
|
|
272
|
2728 char *p = ((char *) PUREBEG + pure_bytes_used);
|
|
|
2729
|
|
|
2730 p = (char *) (((EMACS_UINT) p + alignment - 1) & - alignment);
|
|
|
2731 pure_bytes_used = p - (char *) PUREBEG;
|
|
0
|
2732 }
|
|
|
2733
|
|
|
2734 if (!check_purespace (sizeof (struct Lisp_Float)))
|
|
173
|
2735 return make_float (num);
|
|
0
|
2736
|
|
272
|
2737 f = (struct Lisp_Float *) (PUREBEG + pure_bytes_used);
|
|
0
|
2738 set_lheader_implementation (&(f->lheader), lrecord_float);
|
|
211
|
2739 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
2740 f->lheader.pure = 1;
|
|
|
2741 #endif
|
|
272
|
2742 pure_bytes_used += sizeof (struct Lisp_Float);
|
|
0
|
2743 bump_purestat (&purestat_float, sizeof (struct Lisp_Float));
|
|
|
2744
|
|
|
2745 float_data (f) = num;
|
|
|
2746 XSETFLOAT (val, f);
|
|
173
|
2747 return val;
|
|
0
|
2748 }
|
|
|
2749
|
|
|
2750 #endif /* LISP_FLOAT_TYPE */
|
|
|
2751
|
|
|
2752 Lisp_Object
|
|
272
|
2753 make_pure_vector (size_t len, Lisp_Object init)
|
|
0
|
2754 {
|
|
380
|
2755 Lisp_Vector *v;
|
|
382
|
2756 size_t size = STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents, len);
|
|
0
|
2757
|
|
|
2758 init = Fpurecopy (init);
|
|
|
2759
|
|
|
2760 if (!check_purespace (size))
|
|
173
|
2761 return make_vector (len, init);
|
|
0
|
2762
|
|
380
|
2763 v = (Lisp_Vector *) (PUREBEG + pure_bytes_used);
|
|
207
|
2764 #ifdef LRECORD_VECTOR
|
|
|
2765 set_lheader_implementation (&(v->header.lheader), lrecord_vector);
|
|
211
|
2766 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
2767 v->header.lheader.pure = 1;
|
|
|
2768 #endif
|
|
207
|
2769 #endif
|
|
272
|
2770 pure_bytes_used += size;
|
|
0
|
2771 bump_purestat (&purestat_vector_all, size);
|
|
|
2772
|
|
207
|
2773 v->size = len;
|
|
0
|
2774
|
|
|
2775 for (size = 0; size < len; size++)
|
|
207
|
2776 v->contents[size] = init;
|
|
|
2777
|
|
382
|
2778 {
|
|
|
2779 Lisp_Object vector;
|
|
|
2780 XSETVECTOR (vector, v);
|
|
|
2781 return vector;
|
|
|
2782 }
|
|
0
|
2783 }
|
|
|
2784
|
|
|
2785 #if 0
|
|
|
2786 /* Presently unused */
|
|
|
2787 void *
|
|
|
2788 alloc_pure_lrecord (int size, struct lrecord_implementation *implementation)
|
|
|
2789 {
|
|
272
|
2790 struct lrecord_header *header = (void *) (PUREBEG + pure_bytes_used);
|
|
|
2791
|
|
|
2792 if (pure_bytes_used + size > get_PURESIZE())
|
|
0
|
2793 pure_storage_exhausted ();
|
|
|
2794
|
|
|
2795 set_lheader_implementation (header, implementation);
|
|
|
2796 header->next = 0;
|
|
173
|
2797 return header;
|
|
0
|
2798 }
|
|
183
|
2799 #endif /* unused */
|
|
0
|
2800
|
|
|
2801
|
|
|
2802
|
|
20
|
2803 DEFUN ("purecopy", Fpurecopy, 1, 1, 0, /*
|
|
0
|
2804 Make a copy of OBJECT in pure storage.
|
|
|
2805 Recursively copies contents of vectors and cons cells.
|
|
|
2806 Does not copy symbols.
|
|
20
|
2807 */
|
|
|
2808 (obj))
|
|
0
|
2809 {
|
|
|
2810 if (!purify_flag)
|
|
380
|
2811 {
|
|
|
2812 return obj;
|
|
|
2813 }
|
|
|
2814 else if (!POINTER_TYPE_P (XTYPE (obj))
|
|
|
2815 || PURIFIED (XPNTR (obj))
|
|
|
2816 /* happens when bootstrapping Qnil */
|
|
|
2817 || EQ (obj, Qnull_pointer))
|
|
|
2818 {
|
|
|
2819 return obj;
|
|
|
2820 }
|
|
|
2821 /* Order of subsequent tests determined via profiling. */
|
|
|
2822 else if (SYMBOLP (obj))
|
|
0
|
2823 {
|
|
380
|
2824 /* Symbols can't be made pure (and thus read-only), because
|
|
|
2825 assigning to their function, value or plist slots would
|
|
|
2826 produced a SEGV in the dumped XEmacs. So we previously would
|
|
|
2827 just return the symbol unchanged.
|
|
|
2828
|
|
|
2829 But purified aggregate objects like lists and vectors can
|
|
|
2830 contain uninterned symbols. If there are no other non-pure
|
|
|
2831 references to the symbol, then the symbol is not protected
|
|
|
2832 from garbage collection because the collector does not mark
|
|
|
2833 the contents of purified objects. So to protect the symbols,
|
|
|
2834 an impure reference has to be kept for each uninterned symbol
|
|
|
2835 that is referenced by a pure object. All such symbols are
|
|
|
2836 stored in the hash table pointed to by
|
|
|
2837 Vpure_uninterned_symbol_table, which is itself
|
|
|
2838 staticpro'd. */
|
|
|
2839 if (NILP (XSYMBOL (obj)->obarray))
|
|
|
2840 Fputhash (obj, Qnil, Vpure_uninterned_symbol_table);
|
|
|
2841 return obj;
|
|
|
2842 }
|
|
|
2843 else if (CONSP (obj))
|
|
|
2844 {
|
|
0
|
2845 return pure_cons (XCAR (obj), XCDR (obj));
|
|
380
|
2846 }
|
|
|
2847 else if (STRINGP (obj))
|
|
|
2848 {
|
|
16
|
2849 return make_pure_string (XSTRING_DATA (obj),
|
|
|
2850 XSTRING_LENGTH (obj),
|
|
0
|
2851 XSTRING (obj)->plist,
|
|
380
|
2852 0);
|
|
|
2853 }
|
|
|
2854 else if (VECTORP (obj))
|
|
|
2855 {
|
|
|
2856 int i;
|
|
|
2857 Lisp_Vector *o = XVECTOR (obj);
|
|
|
2858 Lisp_Object pure_obj = make_pure_vector (vector_length (o), Qnil);
|
|
|
2859 for (i = 0; i < vector_length (o); i++)
|
|
|
2860 XVECTOR_DATA (pure_obj)[i] = Fpurecopy (o->contents[i]);
|
|
|
2861 return pure_obj;
|
|
|
2862 }
|
|
0
|
2863 #ifdef LISP_FLOAT_TYPE
|
|
380
|
2864 else if (FLOATP (obj))
|
|
|
2865 {
|
|
|
2866 return make_pure_float (XFLOAT_DATA (obj));
|
|
|
2867 }
|
|
|
2868 #endif
|
|
|
2869 else if (COMPILED_FUNCTIONP (obj))
|
|
|
2870 {
|
|
|
2871 Lisp_Object pure_obj = make_compiled_function (1);
|
|
|
2872 Lisp_Compiled_Function *o = XCOMPILED_FUNCTION (obj);
|
|
|
2873 Lisp_Compiled_Function *n = XCOMPILED_FUNCTION (pure_obj);
|
|
|
2874 n->flags = o->flags;
|
|
|
2875 n->instructions = o->instructions;
|
|
|
2876 n->constants = Fpurecopy (o->constants);
|
|
|
2877 n->arglist = Fpurecopy (o->arglist);
|
|
|
2878 n->doc_and_interactive = Fpurecopy (o->doc_and_interactive);
|
|
|
2879 n->stack_depth = o->stack_depth;
|
|
|
2880 optimize_compiled_function (pure_obj);
|
|
|
2881 return pure_obj;
|
|
0
|
2882 }
|
|
380
|
2883 else if (OPAQUEP (obj))
|
|
|
2884 {
|
|
|
2885 Lisp_Object pure_obj;
|
|
|
2886 Lisp_Opaque *old_opaque = XOPAQUE (obj);
|
|
|
2887 Lisp_Opaque *new_opaque = (Lisp_Opaque *) (PUREBEG + pure_bytes_used);
|
|
|
2888 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
|
|
|
2889 CONST struct lrecord_implementation *implementation
|
|
|
2890 = LHEADER_IMPLEMENTATION (lheader);
|
|
|
2891 size_t size = implementation->size_in_bytes_method (lheader);
|
|
|
2892 size_t pure_size = ALIGN_SIZE (size, ALIGNOF (Lisp_Object));
|
|
|
2893 if (!check_purespace (pure_size))
|
|
|
2894 return obj;
|
|
|
2895 pure_bytes_used += pure_size;
|
|
|
2896
|
|
|
2897 memcpy (new_opaque, old_opaque, size);
|
|
|
2898 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
2899 lheader->pure = 1;
|
|
|
2900 #endif
|
|
|
2901 new_opaque->header.next = 0;
|
|
|
2902
|
|
|
2903 XSETOPAQUE (pure_obj, new_opaque);
|
|
|
2904 return pure_obj;
|
|
|
2905 }
|
|
|
2906 else
|
|
|
2907 {
|
|
|
2908 signal_simple_error ("Can't purecopy %S", obj);
|
|
|
2909 }
|
|
|
2910 return obj; /* Unreached */
|
|
0
|
2911 }
|
|
|
2912
|
|
|
2913
|
|
|
2914
|
|
102
|
2915 static void
|
|
272
|
2916 puresize_adjust_h (size_t puresize)
|
|
102
|
2917 {
|
|
183
|
2918 FILE *stream = fopen ("puresize-adjust.h", "w");
|
|
|
2919
|
|
|
2920 if (stream == NULL)
|
|
|
2921 report_file_error ("Opening puresize adjustment file",
|
|
|
2922 Fcons (build_string ("puresize-adjust.h"), Qnil));
|
|
|
2923
|
|
|
2924 fprintf (stream,
|
|
|
2925 "/*\tDo not edit this file!\n"
|
|
|
2926 "\tAutomatically generated by XEmacs */\n"
|
|
|
2927 "# define PURESIZE_ADJUSTMENT (%ld)\n",
|
|
272
|
2928 (long) (puresize - RAW_PURESIZE));
|
|
183
|
2929 fclose (stream);
|
|
102
|
2930 }
|
|
|
2931
|
|
0
|
2932 void
|
|
|
2933 report_pure_usage (int report_impurities,
|
|
|
2934 int die_if_pure_storage_exceeded)
|
|
|
2935 {
|
|
102
|
2936 int rc = 0;
|
|
|
2937
|
|
0
|
2938 if (pure_lossage)
|
|
|
2939 {
|
|
|
2940 message ("\n****\tPure Lisp storage exhausted!\n"
|
|
183
|
2941 "\tPurespace usage: %ld of %ld\n"
|
|
|
2942 "****",
|
|
272
|
2943 (long) get_PURESIZE() + pure_lossage,
|
|
|
2944 (long) get_PURESIZE());
|
|
|
2945 if (die_if_pure_storage_exceeded)
|
|
|
2946 {
|
|
|
2947 puresize_adjust_h (get_PURESIZE() + pure_lossage);
|
|
251
|
2948 #ifdef HEAP_IN_DATA
|
|
272
|
2949 sheap_adjust_h();
|
|
251
|
2950 #endif
|
|
272
|
2951 rc = -1;
|
|
|
2952 }
|
|
0
|
2953 }
|
|
|
2954 else
|
|
|
2955 {
|
|
272
|
2956 size_t lost = (get_PURESIZE() - pure_bytes_used) / 1024;
|
|
0
|
2957 char buf[200];
|
|
251
|
2958 /* extern Lisp_Object Vemacs_beta_version; */
|
|
247
|
2959 /* This used to be NILP(Vemacs_beta_version) ? 512 : 4; */
|
|
|
2960 #ifndef PURESIZE_SLOP
|
|
249
|
2961 #define PURESIZE_SLOP 0
|
|
247
|
2962 #endif
|
|
272
|
2963 size_t slop = PURESIZE_SLOP;
|
|
0
|
2964
|
|
|
2965 sprintf (buf, "Purespace usage: %ld of %ld (%d%%",
|
|
272
|
2966 (long) pure_bytes_used,
|
|
|
2967 (long) get_PURESIZE(),
|
|
|
2968 (int) (pure_bytes_used / (get_PURESIZE() / 100.0) + 0.5));
|
|
249
|
2969 if (lost > ((slop ? slop : 1) / 1024)) {
|
|
274
|
2970 sprintf (buf + strlen (buf), " -- %ldk wasted", (long)lost);
|
|
102
|
2971 if (die_if_pure_storage_exceeded) {
|
|
272
|
2972 puresize_adjust_h (pure_bytes_used + slop);
|
|
251
|
2973 #ifdef HEAP_IN_DATA
|
|
|
2974 sheap_adjust_h();
|
|
|
2975 #endif
|
|
102
|
2976 rc = -1;
|
|
|
2977 }
|
|
|
2978 }
|
|
|
2979
|
|
0
|
2980 strcat (buf, ").");
|
|
|
2981 message ("%s", buf);
|
|
|
2982 }
|
|
|
2983
|
|
|
2984 #ifdef PURESTAT
|
|
183
|
2985
|
|
|
2986 purestat_vector_other.nbytes =
|
|
|
2987 purestat_vector_all.nbytes -
|
|
380
|
2988 purestat_vector_constants.nbytes;
|
|
183
|
2989 purestat_vector_other.nobjects =
|
|
|
2990 purestat_vector_all.nobjects -
|
|
380
|
2991 purestat_vector_constants.nobjects;
|
|
183
|
2992
|
|
|
2993 purestat_string_other.nbytes =
|
|
|
2994 purestat_string_all.nbytes -
|
|
|
2995 (purestat_string_pname.nbytes +
|
|
|
2996 purestat_string_interactive.nbytes +
|
|
|
2997 purestat_string_documentation.nbytes +
|
|
0
|
2998 #ifdef I18N3
|
|
183
|
2999 purestat_string_domain.nbytes +
|
|
0
|
3000 #endif
|
|
183
|
3001 purestat_string_other_function.nbytes);
|
|
|
3002
|
|
|
3003 purestat_string_other.nobjects =
|
|
|
3004 purestat_string_all.nobjects -
|
|
|
3005 (purestat_string_pname.nobjects +
|
|
|
3006 purestat_string_interactive.nobjects +
|
|
|
3007 purestat_string_documentation.nobjects +
|
|
0
|
3008 #ifdef I18N3
|
|
183
|
3009 purestat_string_domain.nobjects +
|
|
0
|
3010 #endif
|
|
183
|
3011 purestat_string_other_function.nobjects);
|
|
|
3012
|
|
380
|
3013 message (" %-34s Objects Bytes", "");
|
|
|
3014
|
|
|
3015 print_purestat (&purestat_cons);
|
|
|
3016 print_purestat (&purestat_float);
|
|
|
3017 print_purestat (&purestat_string_pname);
|
|
|
3018 print_purestat (&purestat_function);
|
|
|
3019 print_purestat (&purestat_opaque_instructions);
|
|
|
3020 print_purestat (&purestat_vector_constants);
|
|
|
3021 print_purestat (&purestat_string_interactive);
|
|
|
3022 #ifdef I18N3
|
|
|
3023 print_purestat (&purestat_string_domain);
|
|
|
3024 #endif
|
|
|
3025 print_purestat (&purestat_string_documentation);
|
|
|
3026 print_purestat (&purestat_string_other_function);
|
|
|
3027 print_purestat (&purestat_vector_other);
|
|
|
3028 print_purestat (&purestat_string_other);
|
|
|
3029 print_purestat (&purestat_string_all);
|
|
|
3030 print_purestat (&purestat_vector_all);
|
|
|
3031
|
|
0
|
3032 #endif /* PURESTAT */
|
|
|
3033
|
|
|
3034
|
|
|
3035 if (report_impurities)
|
|
|
3036 {
|
|
380
|
3037 Lisp_Object plist;
|
|
0
|
3038 struct gcpro gcpro1;
|
|
380
|
3039 plist = XCAR (XCDR (XCDR (XCDR (XCDR (XCDR (Fgarbage_collect()))))));
|
|
|
3040 GCPRO1 (plist);
|
|
0
|
3041 message ("\nImpurities:");
|
|
380
|
3042 for (; CONSP (plist); plist = XCDR (XCDR (plist)))
|
|
0
|
3043 {
|
|
380
|
3044 Lisp_Object symbol = XCAR (plist);
|
|
|
3045 int size = XINT (XCAR (XCDR (plist)));
|
|
|
3046 if (size > 0)
|
|
0
|
3047 {
|
|
380
|
3048 char buf [100];
|
|
|
3049 char *s = buf;
|
|
|
3050 memcpy (buf,
|
|
|
3051 string_data (XSYMBOL (symbol)->name),
|
|
|
3052 string_length (XSYMBOL (symbol)->name) + 1);
|
|
|
3053 while (*s++) if (*s == '-') *s = ' ';
|
|
|
3054 *(s-1) = ':'; *s = 0;
|
|
|
3055 message (" %-34s %6d", buf, size);
|
|
0
|
3056 }
|
|
|
3057 }
|
|
|
3058 UNGCPRO;
|
|
380
|
3059 garbage_collect_1 (); /* collect Fgarbage_collect()'s garbage */
|
|
0
|
3060 }
|
|
|
3061 clear_message ();
|
|
|
3062
|
|
102
|
3063 if (rc < 0) {
|
|
183
|
3064 unlink("SATISFIED");
|
|
171
|
3065 fatal ("Pure size adjusted, Don't Panic! I will restart the `make'");
|
|
102
|
3066 } else if (pure_lossage && die_if_pure_storage_exceeded) {
|
|
0
|
3067 fatal ("Pure storage exhausted");
|
|
102
|
3068 }
|
|
0
|
3069 }
|
|
|
3070
|
|
|
3071
|
|
380
|
3072 /************************************************************************/
|
|
|
3073 /* Garbage Collection */
|
|
|
3074 /************************************************************************/
|
|
|
3075
|
|
|
3076 /* This will be used more extensively In The Future */
|
|
|
3077 static int last_lrecord_type_index_assigned;
|
|
|
3078
|
|
|
3079 CONST struct lrecord_implementation *lrecord_implementations_table[128];
|
|
|
3080 #define max_lrecord_type (countof (lrecord_implementations_table) - 1)
|
|
0
|
3081
|
|
|
3082 struct gcpro *gcprolist;
|
|
|
3083
|
|
|
3084 /* 415 used Mly 29-Jun-93 */
|
|
261
|
3085 /* 1327 used slb 28-Feb-98 */
|
|
263
|
3086 #ifdef HAVE_SHLIB
|
|
|
3087 #define NSTATICS 4000
|
|
|
3088 #else
|
|
|
3089 #define NSTATICS 2000
|
|
|
3090 #endif
|
|
0
|
3091 /* Not "static" because of linker lossage on some systems */
|
|
|
3092 Lisp_Object *staticvec[NSTATICS]
|
|
|
3093 /* Force it into data space! */
|
|
|
3094 = {0};
|
|
|
3095 static int staticidx;
|
|
|
3096
|
|
|
3097 /* Put an entry in staticvec, pointing at the variable whose address is given
|
|
|
3098 */
|
|
|
3099 void
|
|
|
3100 staticpro (Lisp_Object *varaddress)
|
|
|
3101 {
|
|
|
3102 if (staticidx >= countof (staticvec))
|
|
263
|
3103 /* #### This is now a dubious abort() since this routine may be called */
|
|
|
3104 /* by Lisp attempting to load a DLL. */
|
|
0
|
3105 abort ();
|
|
|
3106 staticvec[staticidx++] = varaddress;
|
|
|
3107 }
|
|
|
3108
|
|
|
3109
|
|
|
3110 /* Mark reference to a Lisp_Object. If the object referred to has not been
|
|
|
3111 seen yet, recursively mark all the references contained in it. */
|
|
183
|
3112
|
|
0
|
3113 static void
|
|
|
3114 mark_object (Lisp_Object obj)
|
|
|
3115 {
|
|
|
3116 tail_recurse:
|
|
|
3117
|
|
380
|
3118 #ifdef ERROR_CHECK_GC
|
|
|
3119 assert (! (GC_EQ (obj, Qnull_pointer)));
|
|
|
3120 #endif
|
|
|
3121 /* Checks we used to perform */
|
|
|
3122 /* if (EQ (obj, Qnull_pointer)) return; */
|
|
|
3123 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return; */
|
|
|
3124 /* if (PURIFIED (XPNTR (obj))) return; */
|
|
|
3125
|
|
0
|
3126 switch (XGCTYPE (obj))
|
|
|
3127 {
|
|
207
|
3128 #ifndef LRECORD_CONS
|
|
185
|
3129 case Lisp_Type_Cons:
|
|
0
|
3130 {
|
|
|
3131 struct Lisp_Cons *ptr = XCONS (obj);
|
|
380
|
3132 if (PURIFIED (ptr))
|
|
|
3133 break;
|
|
0
|
3134 if (CONS_MARKED_P (ptr))
|
|
|
3135 break;
|
|
|
3136 MARK_CONS (ptr);
|
|
|
3137 /* If the cdr is nil, tail-recurse on the car. */
|
|
380
|
3138 if (GC_NILP (ptr->cdr))
|
|
0
|
3139 {
|
|
|
3140 obj = ptr->car;
|
|
|
3141 }
|
|
|
3142 else
|
|
|
3143 {
|
|
|
3144 mark_object (ptr->car);
|
|
|
3145 obj = ptr->cdr;
|
|
|
3146 }
|
|
|
3147 goto tail_recurse;
|
|
|
3148 }
|
|
207
|
3149 #endif
|
|
0
|
3150
|
|
185
|
3151 case Lisp_Type_Record:
|
|
0
|
3152 {
|
|
|
3153 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
|
|
380
|
3154 #if defined (ERROR_CHECK_GC) && defined (USE_INDEXED_LRECORD_IMPLEMENTATION)
|
|
|
3155 assert (lheader->type <= last_lrecord_type_index_assigned);
|
|
|
3156 #endif
|
|
|
3157 if (PURIFIED (lheader))
|
|
|
3158 return;
|
|
0
|
3159
|
|
|
3160 if (! MARKED_RECORD_HEADER_P (lheader) &&
|
|
|
3161 ! UNMARKABLE_RECORD_HEADER_P (lheader))
|
|
|
3162 {
|
|
380
|
3163 CONST struct lrecord_implementation *implementation =
|
|
|
3164 LHEADER_IMPLEMENTATION (lheader);
|
|
0
|
3165 MARK_RECORD_HEADER (lheader);
|
|
|
3166 #ifdef ERROR_CHECK_GC
|
|
|
3167 if (!implementation->basic_p)
|
|
|
3168 assert (! ((struct lcrecord_header *) lheader)->free);
|
|
|
3169 #endif
|
|
380
|
3170 if (implementation->marker)
|
|
0
|
3171 {
|
|
380
|
3172 obj = implementation->marker (obj, mark_object);
|
|
|
3173 if (!GC_NILP (obj)) goto tail_recurse;
|
|
0
|
3174 }
|
|
|
3175 }
|
|
|
3176 }
|
|
|
3177 break;
|
|
|
3178
|
|
207
|
3179 #ifndef LRECORD_STRING
|
|
185
|
3180 case Lisp_Type_String:
|
|
0
|
3181 {
|
|
|
3182 struct Lisp_String *ptr = XSTRING (obj);
|
|
380
|
3183 if (PURIFIED (ptr))
|
|
|
3184 return;
|
|
0
|
3185
|
|
|
3186 if (!XMARKBIT (ptr->plist))
|
|
|
3187 {
|
|
|
3188 if (CONSP (ptr->plist) &&
|
|
|
3189 EXTENT_INFOP (XCAR (ptr->plist)))
|
|
|
3190 flush_cached_extent_info (XCAR (ptr->plist));
|
|
|
3191 XMARK (ptr->plist);
|
|
|
3192 obj = ptr->plist;
|
|
|
3193 goto tail_recurse;
|
|
|
3194 }
|
|
|
3195 }
|
|
|
3196 break;
|
|
207
|
3197 #endif /* ! LRECORD_STRING */
|
|
0
|
3198
|
|
185
|
3199 #ifndef LRECORD_VECTOR
|
|
|
3200 case Lisp_Type_Vector:
|
|
0
|
3201 {
|
|
|
3202 struct Lisp_Vector *ptr = XVECTOR (obj);
|
|
380
|
3203 int len, i;
|
|
|
3204
|
|
|
3205 if (PURIFIED (ptr))
|
|
|
3206 return;
|
|
|
3207
|
|
|
3208 len = vector_length (ptr);
|
|
0
|
3209
|
|
|
3210 if (len < 0)
|
|
|
3211 break; /* Already marked */
|
|
|
3212 ptr->size = -1 - len; /* Else mark it */
|
|
|
3213 for (i = 0; i < len - 1; i++) /* and then mark its elements */
|
|
|
3214 mark_object (ptr->contents[i]);
|
|
|
3215 if (len > 0)
|
|
|
3216 {
|
|
|
3217 obj = ptr->contents[len - 1];
|
|
|
3218 goto tail_recurse;
|
|
|
3219 }
|
|
|
3220 }
|
|
|
3221 break;
|
|
185
|
3222 #endif /* !LRECORD_VECTOR */
|
|
0
|
3223
|
|
|
3224 #ifndef LRECORD_SYMBOL
|
|
185
|
3225 case Lisp_Type_Symbol:
|
|
0
|
3226 {
|
|
|
3227 struct Lisp_Symbol *sym = XSYMBOL (obj);
|
|
|
3228
|
|
380
|
3229 if (PURIFIED (sym))
|
|
|
3230 return;
|
|
|
3231
|
|
0
|
3232 while (!XMARKBIT (sym->plist))
|
|
|
3233 {
|
|
|
3234 XMARK (sym->plist);
|
|
|
3235 mark_object (sym->value);
|
|
|
3236 mark_object (sym->function);
|
|
|
3237 {
|
|
207
|
3238 /*
|
|
|
3239 * symbol->name is a struct Lisp_String *, not a
|
|
|
3240 * Lisp_Object. Fix it up and pass to mark_object.
|
|
|
3241 */
|
|
|
3242 Lisp_Object symname;
|
|
380
|
3243 XSETSTRING (symname, sym->name);
|
|
|
3244 mark_object (symname);
|
|
0
|
3245 }
|
|
|
3246 if (!symbol_next (sym))
|
|
|
3247 {
|
|
|
3248 obj = sym->plist;
|
|
|
3249 goto tail_recurse;
|
|
|
3250 }
|
|
|
3251 mark_object (sym->plist);
|
|
|
3252 /* Mark the rest of the symbols in the hash-chain */
|
|
|
3253 sym = symbol_next (sym);
|
|
|
3254 }
|
|
|
3255 }
|
|
|
3256 break;
|
|
|
3257 #endif /* !LRECORD_SYMBOL */
|
|
|
3258
|
|
380
|
3259 /* Check for invalid Lisp_Object types */
|
|
|
3260 #if defined (ERROR_CHECK_GC) && ! defined (USE_MINIMAL_TAGBITS)
|
|
|
3261 case Lisp_Type_Int:
|
|
|
3262 case Lisp_Type_Char:
|
|
|
3263 break;
|
|
0
|
3264 default:
|
|
380
|
3265 abort();
|
|
|
3266 break;
|
|
|
3267 #endif /* ERROR_CHECK_GC && ! USE_MINIMAL_TAGBITS */
|
|
0
|
3268 }
|
|
|
3269 }
|
|
|
3270
|
|
|
3271 /* mark all of the conses in a list and mark the final cdr; but
|
|
|
3272 DO NOT mark the cars.
|
|
|
3273
|
|
|
3274 Use only for internal lists! There should never be other pointers
|
|
|
3275 to the cons cells, because if so, the cars will remain unmarked
|
|
|
3276 even when they maybe should be marked. */
|
|
|
3277 void
|
|
|
3278 mark_conses_in_list (Lisp_Object obj)
|
|
|
3279 {
|
|
|
3280 Lisp_Object rest;
|
|
|
3281
|
|
|
3282 for (rest = obj; CONSP (rest); rest = XCDR (rest))
|
|
|
3283 {
|
|
|
3284 if (CONS_MARKED_P (XCONS (rest)))
|
|
|
3285 return;
|
|
|
3286 MARK_CONS (XCONS (rest));
|
|
|
3287 }
|
|
|
3288
|
|
|
3289 mark_object (rest);
|
|
|
3290 }
|
|
|
3291
|
|
|
3292
|
|
|
3293 #ifdef PURESTAT
|
|
183
|
3294 /* Simpler than mark-object, because pure structure can't
|
|
|
3295 have any circularities */
|
|
0
|
3296
|
|
272
|
3297 static size_t
|
|
|
3298 pure_string_sizeof (Lisp_Object obj)
|
|
207
|
3299 {
|
|
|
3300 struct Lisp_String *ptr = XSTRING (obj);
|
|
272
|
3301
|
|
|
3302 if (string_data (ptr) != (Bufbyte *) ptr + sizeof (*ptr))
|
|
207
|
3303 {
|
|
|
3304 /* string-data not allocated contiguously.
|
|
|
3305 Probably (better be!!) a pointer constant "C" data. */
|
|
272
|
3306 return sizeof (*ptr);
|
|
207
|
3307 }
|
|
|
3308 else
|
|
|
3309 {
|
|
272
|
3310 size_t size = sizeof (*ptr) + string_length (ptr) + 1;
|
|
207
|
3311 size = ALIGN_SIZE (size, sizeof (Lisp_Object));
|
|
272
|
3312 return size;
|
|
207
|
3313 }
|
|
|
3314 }
|
|
|
3315
|
|
272
|
3316 static size_t
|
|
380
|
3317 pure_sizeof (Lisp_Object obj)
|
|
0
|
3318 {
|
|
|
3319 if (!POINTER_TYPE_P (XTYPE (obj))
|
|
|
3320 || !PURIFIED (XPNTR (obj)))
|
|
380
|
3321 return 0;
|
|
|
3322 /* symbol sizes are accounted for separately */
|
|
|
3323 else if (SYMBOLP (obj))
|
|
|
3324 return 0;
|
|
|
3325 else if (STRINGP (obj))
|
|
|
3326 return pure_string_sizeof (obj);
|
|
|
3327 else if (LRECORDP (obj))
|
|
0
|
3328 {
|
|
380
|
3329 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
|
|
|
3330 CONST struct lrecord_implementation *implementation
|
|
|
3331 = LHEADER_IMPLEMENTATION (lheader);
|
|
|
3332
|
|
|
3333 return implementation->size_in_bytes_method
|
|
|
3334 ? implementation->size_in_bytes_method (lheader)
|
|
|
3335 : implementation->static_size;
|
|
|
3336 }
|
|
185
|
3337 #ifndef LRECORD_VECTOR
|
|
380
|
3338 else if (VECTORP (obj))
|
|
382
|
3339 return STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents, XVECTOR_LENGTH (obj));
|
|
207
|
3340 #endif /* !LRECORD_VECTOR */
|
|
185
|
3341
|
|
207
|
3342 #ifndef LRECORD_CONS
|
|
380
|
3343 else if (CONSP (obj))
|
|
|
3344 return sizeof (struct Lisp_Cons);
|
|
|
3345 #endif /* !LRECORD_CONS */
|
|
|
3346 else
|
|
|
3347 /* Others can't be purified */
|
|
|
3348 abort ();
|
|
|
3349 return 0; /* unreached */
|
|
0
|
3350 }
|
|
|
3351 #endif /* PURESTAT */
|
|
|
3352
|
|
|
3353
|
|
|
3354
|
|
|
3355
|
|
|
3356 /* Find all structures not marked, and free them. */
|
|
|
3357
|
|
207
|
3358 #ifndef LRECORD_VECTOR
|
|
0
|
3359 static int gc_count_num_vector_used, gc_count_vector_total_size;
|
|
|
3360 static int gc_count_vector_storage;
|
|
207
|
3361 #endif
|
|
0
|
3362 static int gc_count_num_bit_vector_used, gc_count_bit_vector_total_size;
|
|
|
3363 static int gc_count_bit_vector_storage;
|
|
|
3364 static int gc_count_num_short_string_in_use;
|
|
|
3365 static int gc_count_string_total_size;
|
|
|
3366 static int gc_count_short_string_total_size;
|
|
|
3367
|
|
|
3368 /* static int gc_count_total_records_used, gc_count_records_total_size; */
|
|
|
3369
|
|
|
3370
|
|
211
|
3371 int
|
|
0
|
3372 lrecord_type_index (CONST struct lrecord_implementation *implementation)
|
|
|
3373 {
|
|
|
3374 int type_index = *(implementation->lrecord_type_index);
|
|
272
|
3375 /* Have to do this circuitous validation test because of problems
|
|
0
|
3376 dumping out initialized variables (ie can't set xxx_type_index to -1
|
|
|
3377 because that would make xxx_type_index read-only in a dumped emacs. */
|
|
|
3378 if (type_index < 0 || type_index > max_lrecord_type
|
|
|
3379 || lrecord_implementations_table[type_index] != implementation)
|
|
|
3380 {
|
|
386
|
3381 assert (last_lrecord_type_index_assigned < max_lrecord_type);
|
|
0
|
3382 type_index = ++last_lrecord_type_index_assigned;
|
|
|
3383 lrecord_implementations_table[type_index] = implementation;
|
|
|
3384 *(implementation->lrecord_type_index) = type_index;
|
|
|
3385 }
|
|
173
|
3386 return type_index;
|
|
0
|
3387 }
|
|
|
3388
|
|
|
3389 /* stats on lcrecords in use - kinda kludgy */
|
|
|
3390
|
|
|
3391 static struct
|
|
|
3392 {
|
|
|
3393 int instances_in_use;
|
|
|
3394 int bytes_in_use;
|
|
|
3395 int instances_freed;
|
|
|
3396 int bytes_freed;
|
|
|
3397 int instances_on_free_list;
|
|
|
3398 } lcrecord_stats [countof (lrecord_implementations_table)];
|
|
|
3399
|
|
|
3400 static void
|
|
|
3401 tick_lcrecord_stats (CONST struct lrecord_header *h, int free_p)
|
|
|
3402 {
|
|
211
|
3403 CONST struct lrecord_implementation *implementation =
|
|
|
3404 LHEADER_IMPLEMENTATION (h);
|
|
0
|
3405 int type_index = lrecord_type_index (implementation);
|
|
|
3406
|
|
|
3407 if (((struct lcrecord_header *) h)->free)
|
|
|
3408 {
|
|
|
3409 assert (!free_p);
|
|
|
3410 lcrecord_stats[type_index].instances_on_free_list++;
|
|
|
3411 }
|
|
|
3412 else
|
|
|
3413 {
|
|
272
|
3414 size_t sz = (implementation->size_in_bytes_method
|
|
380
|
3415 ? implementation->size_in_bytes_method (h)
|
|
272
|
3416 : implementation->static_size);
|
|
0
|
3417
|
|
|
3418 if (free_p)
|
|
|
3419 {
|
|
|
3420 lcrecord_stats[type_index].instances_freed++;
|
|
|
3421 lcrecord_stats[type_index].bytes_freed += sz;
|
|
|
3422 }
|
|
|
3423 else
|
|
|
3424 {
|
|
|
3425 lcrecord_stats[type_index].instances_in_use++;
|
|
|
3426 lcrecord_stats[type_index].bytes_in_use += sz;
|
|
|
3427 }
|
|
|
3428 }
|
|
|
3429 }
|
|
|
3430
|
|
|
3431
|
|
|
3432 /* Free all unmarked records */
|
|
|
3433 static void
|
|
|
3434 sweep_lcrecords_1 (struct lcrecord_header **prev, int *used)
|
|
|
3435 {
|
|
|
3436 struct lcrecord_header *header;
|
|
|
3437 int num_used = 0;
|
|
|
3438 /* int total_size = 0; */
|
|
386
|
3439
|
|
|
3440 xzero (lcrecord_stats); /* Reset all statistics to 0. */
|
|
0
|
3441
|
|
|
3442 /* First go through and call all the finalize methods.
|
|
|
3443 Then go through and free the objects. There used to
|
|
|
3444 be only one loop here, with the call to the finalizer
|
|
|
3445 occurring directly before the xfree() below. That
|
|
|
3446 is marginally faster but much less safe -- if the
|
|
|
3447 finalize method for an object needs to reference any
|
|
|
3448 other objects contained within it (and many do),
|
|
|
3449 we could easily be screwed by having already freed that
|
|
|
3450 other object. */
|
|
|
3451
|
|
|
3452 for (header = *prev; header; header = header->next)
|
|
|
3453 {
|
|
|
3454 struct lrecord_header *h = &(header->lheader);
|
|
|
3455 if (!MARKED_RECORD_HEADER_P (h) && ! (header->free))
|
|
|
3456 {
|
|
211
|
3457 if (LHEADER_IMPLEMENTATION (h)->finalizer)
|
|
380
|
3458 LHEADER_IMPLEMENTATION (h)->finalizer (h, 0);
|
|
0
|
3459 }
|
|
|
3460 }
|
|
|
3461
|
|
|
3462 for (header = *prev; header; )
|
|
|
3463 {
|
|
|
3464 struct lrecord_header *h = &(header->lheader);
|
|
|
3465 if (MARKED_RECORD_HEADER_P (h))
|
|
|
3466 {
|
|
|
3467 UNMARK_RECORD_HEADER (h);
|
|
|
3468 num_used++;
|
|
380
|
3469 /* total_size += n->implementation->size_in_bytes (h);*/
|
|
0
|
3470 prev = &(header->next);
|
|
|
3471 header = *prev;
|
|
|
3472 tick_lcrecord_stats (h, 0);
|
|
|
3473 }
|
|
|
3474 else
|
|
|
3475 {
|
|
|
3476 struct lcrecord_header *next = header->next;
|
|
|
3477 *prev = next;
|
|
|
3478 tick_lcrecord_stats (h, 1);
|
|
|
3479 /* used to call finalizer right here. */
|
|
|
3480 xfree (header);
|
|
|
3481 header = next;
|
|
|
3482 }
|
|
|
3483 }
|
|
|
3484 *used = num_used;
|
|
|
3485 /* *total = total_size; */
|
|
|
3486 }
|
|
|
3487
|
|
207
|
3488 #ifndef LRECORD_VECTOR
|
|
|
3489
|
|
0
|
3490 static void
|
|
183
|
3491 sweep_vectors_1 (Lisp_Object *prev,
|
|
0
|
3492 int *used, int *total, int *storage)
|
|
|
3493 {
|
|
|
3494 Lisp_Object vector;
|
|
|
3495 int num_used = 0;
|
|
|
3496 int total_size = 0;
|
|
|
3497 int total_storage = 0;
|
|
|
3498
|
|
|
3499 for (vector = *prev; VECTORP (vector); )
|
|
|
3500 {
|
|
380
|
3501 Lisp_Vector *v = XVECTOR (vector);
|
|
0
|
3502 int len = v->size;
|
|
|
3503 if (len < 0) /* marked */
|
|
|
3504 {
|
|
|
3505 len = - (len + 1);
|
|
|
3506 v->size = len;
|
|
|
3507 total_size += len;
|
|
380
|
3508 total_storage +=
|
|
382
|
3509 MALLOC_OVERHEAD +
|
|
|
3510 STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents, len + 1);
|
|
0
|
3511 num_used++;
|
|
|
3512 prev = &(vector_next (v));
|
|
|
3513 vector = *prev;
|
|
|
3514 }
|
|
|
3515 else
|
|
|
3516 {
|
|
|
3517 Lisp_Object next = vector_next (v);
|
|
|
3518 *prev = next;
|
|
|
3519 xfree (v);
|
|
|
3520 vector = next;
|
|
|
3521 }
|
|
|
3522 }
|
|
|
3523 *used = num_used;
|
|
|
3524 *total = total_size;
|
|
|
3525 *storage = total_storage;
|
|
|
3526 }
|
|
|
3527
|
|
207
|
3528 #endif /* ! LRECORD_VECTOR */
|
|
|
3529
|
|
0
|
3530 static void
|
|
183
|
3531 sweep_bit_vectors_1 (Lisp_Object *prev,
|
|
0
|
3532 int *used, int *total, int *storage)
|
|
|
3533 {
|
|
|
3534 Lisp_Object bit_vector;
|
|
|
3535 int num_used = 0;
|
|
|
3536 int total_size = 0;
|
|
|
3537 int total_storage = 0;
|
|
|
3538
|
|
|
3539 /* BIT_VECTORP fails because the objects are marked, which changes
|
|
|
3540 their implementation */
|
|
|
3541 for (bit_vector = *prev; !EQ (bit_vector, Qzero); )
|
|
|
3542 {
|
|
380
|
3543 Lisp_Bit_Vector *v = XBIT_VECTOR (bit_vector);
|
|
0
|
3544 int len = v->size;
|
|
|
3545 if (MARKED_RECORD_P (bit_vector))
|
|
|
3546 {
|
|
|
3547 UNMARK_RECORD_HEADER (&(v->lheader));
|
|
|
3548 total_size += len;
|
|
380
|
3549 total_storage +=
|
|
382
|
3550 MALLOC_OVERHEAD +
|
|
|
3551 STRETCHY_STRUCT_SIZEOF (Lisp_Bit_Vector, bits,
|
|
|
3552 BIT_VECTOR_LONG_STORAGE (len));
|
|
0
|
3553 num_used++;
|
|
|
3554 prev = &(bit_vector_next (v));
|
|
|
3555 bit_vector = *prev;
|
|
|
3556 }
|
|
|
3557 else
|
|
|
3558 {
|
|
|
3559 Lisp_Object next = bit_vector_next (v);
|
|
|
3560 *prev = next;
|
|
|
3561 xfree (v);
|
|
|
3562 bit_vector = next;
|
|
|
3563 }
|
|
|
3564 }
|
|
|
3565 *used = num_used;
|
|
|
3566 *total = total_size;
|
|
|
3567 *storage = total_storage;
|
|
|
3568 }
|
|
|
3569
|
|
|
3570 /* And the Lord said: Thou shalt use the `c-backslash-region' command
|
|
|
3571 to make macros prettier. */
|
|
|
3572
|
|
|
3573 #ifdef ERROR_CHECK_GC
|
|
|
3574
|
|
|
3575 #define SWEEP_FIXED_TYPE_BLOCK(typename, obj_type) \
|
|
|
3576 do { \
|
|
380
|
3577 struct typename##_block *SFTB_current; \
|
|
|
3578 struct typename##_block **SFTB_prev; \
|
|
|
3579 int SFTB_limit; \
|
|
0
|
3580 int num_free = 0, num_used = 0; \
|
|
|
3581 \
|
|
380
|
3582 for (SFTB_prev = ¤t_##typename##_block, \
|
|
|
3583 SFTB_current = current_##typename##_block, \
|
|
|
3584 SFTB_limit = current_##typename##_block_index; \
|
|
|
3585 SFTB_current; \
|
|
0
|
3586 ) \
|
|
|
3587 { \
|
|
380
|
3588 int SFTB_iii; \
|
|
0
|
3589 \
|
|
380
|
3590 for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++) \
|
|
0
|
3591 { \
|
|
380
|
3592 obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]); \
|
|
0
|
3593 \
|
|
380
|
3594 if (FREE_STRUCT_P (SFTB_victim)) \
|
|
0
|
3595 { \
|
|
|
3596 num_free++; \
|
|
|
3597 } \
|
|
380
|
3598 else if (!MARKED_##typename##_P (SFTB_victim)) \
|
|
0
|
3599 { \
|
|
|
3600 num_free++; \
|
|
380
|
3601 FREE_FIXED_TYPE (typename, obj_type, SFTB_victim); \
|
|
0
|
3602 } \
|
|
|
3603 else \
|
|
|
3604 { \
|
|
|
3605 num_used++; \
|
|
380
|
3606 UNMARK_##typename (SFTB_victim); \
|
|
0
|
3607 } \
|
|
|
3608 } \
|
|
380
|
3609 SFTB_prev = &(SFTB_current->prev); \
|
|
|
3610 SFTB_current = SFTB_current->prev; \
|
|
|
3611 SFTB_limit = countof (current_##typename##_block->block); \
|
|
0
|
3612 } \
|
|
|
3613 \
|
|
|
3614 gc_count_num_##typename##_in_use = num_used; \
|
|
|
3615 gc_count_num_##typename##_freelist = num_free; \
|
|
|
3616 } while (0)
|
|
|
3617
|
|
183
|
3618 #else /* !ERROR_CHECK_GC */
|
|
0
|
3619
|
|
380
|
3620 #define SWEEP_FIXED_TYPE_BLOCK(typename, obj_type) \
|
|
|
3621 do { \
|
|
|
3622 struct typename##_block *SFTB_current; \
|
|
|
3623 struct typename##_block **SFTB_prev; \
|
|
|
3624 int SFTB_limit; \
|
|
|
3625 int num_free = 0, num_used = 0; \
|
|
|
3626 \
|
|
|
3627 typename##_free_list = 0; \
|
|
|
3628 \
|
|
|
3629 for (SFTB_prev = ¤t_##typename##_block, \
|
|
|
3630 SFTB_current = current_##typename##_block, \
|
|
|
3631 SFTB_limit = current_##typename##_block_index; \
|
|
|
3632 SFTB_current; \
|
|
|
3633 ) \
|
|
|
3634 { \
|
|
|
3635 int SFTB_iii; \
|
|
|
3636 int SFTB_empty = 1; \
|
|
|
3637 obj_type *SFTB_old_free_list = typename##_free_list; \
|
|
|
3638 \
|
|
|
3639 for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++) \
|
|
|
3640 { \
|
|
|
3641 obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]); \
|
|
|
3642 \
|
|
|
3643 if (FREE_STRUCT_P (SFTB_victim)) \
|
|
|
3644 { \
|
|
|
3645 num_free++; \
|
|
|
3646 PUT_FIXED_TYPE_ON_FREE_LIST (typename, obj_type, SFTB_victim); \
|
|
|
3647 } \
|
|
|
3648 else if (!MARKED_##typename##_P (SFTB_victim)) \
|
|
|
3649 { \
|
|
|
3650 num_free++; \
|
|
|
3651 FREE_FIXED_TYPE (typename, obj_type, SFTB_victim); \
|
|
|
3652 } \
|
|
|
3653 else \
|
|
|
3654 { \
|
|
|
3655 SFTB_empty = 0; \
|
|
|
3656 num_used++; \
|
|
|
3657 UNMARK_##typename (SFTB_victim); \
|
|
|
3658 } \
|
|
|
3659 } \
|
|
|
3660 if (!SFTB_empty) \
|
|
|
3661 { \
|
|
|
3662 SFTB_prev = &(SFTB_current->prev); \
|
|
|
3663 SFTB_current = SFTB_current->prev; \
|
|
|
3664 } \
|
|
|
3665 else if (SFTB_current == current_##typename##_block \
|
|
|
3666 && !SFTB_current->prev) \
|
|
|
3667 { \
|
|
|
3668 /* No real point in freeing sole allocation block */ \
|
|
|
3669 break; \
|
|
|
3670 } \
|
|
|
3671 else \
|
|
|
3672 { \
|
|
|
3673 struct typename##_block *SFTB_victim_block = SFTB_current; \
|
|
|
3674 if (SFTB_victim_block == current_##typename##_block) \
|
|
|
3675 current_##typename##_block_index \
|
|
|
3676 = countof (current_##typename##_block->block); \
|
|
|
3677 SFTB_current = SFTB_current->prev; \
|
|
|
3678 { \
|
|
|
3679 *SFTB_prev = SFTB_current; \
|
|
|
3680 xfree (SFTB_victim_block); \
|
|
|
3681 /* Restore free list to what it was before victim was swept */ \
|
|
|
3682 typename##_free_list = SFTB_old_free_list; \
|
|
|
3683 num_free -= SFTB_limit; \
|
|
|
3684 } \
|
|
|
3685 } \
|
|
|
3686 SFTB_limit = countof (current_##typename##_block->block); \
|
|
|
3687 } \
|
|
|
3688 \
|
|
|
3689 gc_count_num_##typename##_in_use = num_used; \
|
|
|
3690 gc_count_num_##typename##_freelist = num_free; \
|
|
0
|
3691 } while (0)
|
|
|
3692
|
|
183
|
3693 #endif /* !ERROR_CHECK_GC */
|
|
0
|
3694
|
|
|
3695
|
|
|
3696
|
|
|
3697
|
|
|
3698 static void
|
|
|
3699 sweep_conses (void)
|
|
|
3700 {
|
|
207
|
3701 #ifndef LRECORD_CONS
|
|
|
3702 # define MARKED_cons_P(ptr) XMARKBIT ((ptr)->car)
|
|
|
3703 # define UNMARK_cons(ptr) do { XUNMARK ((ptr)->car); } while (0)
|
|
|
3704 #else /* LRECORD_CONS */
|
|
|
3705 # define MARKED_cons_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3706 # define UNMARK_cons(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3707 #endif /* LRECORD_CONS */
|
|
0
|
3708 #define ADDITIONAL_FREE_cons(ptr)
|
|
|
3709
|
|
|
3710 SWEEP_FIXED_TYPE_BLOCK (cons, struct Lisp_Cons);
|
|
|
3711 }
|
|
|
3712
|
|
|
3713 /* Explicitly free a cons cell. */
|
|
|
3714 void
|
|
|
3715 free_cons (struct Lisp_Cons *ptr)
|
|
|
3716 {
|
|
|
3717 #ifdef ERROR_CHECK_GC
|
|
|
3718 /* If the CAR is not an int, then it will be a pointer, which will
|
|
|
3719 always be four-byte aligned. If this cons cell has already been
|
|
|
3720 placed on the free list, however, its car will probably contain
|
|
|
3721 a chain pointer to the next cons on the list, which has cleverly
|
|
|
3722 had all its 0's and 1's inverted. This allows for a quick
|
|
|
3723 check to make sure we're not freeing something already freed. */
|
|
|
3724 if (POINTER_TYPE_P (XTYPE (ptr->car)))
|
|
|
3725 ASSERT_VALID_POINTER (XPNTR (ptr->car));
|
|
183
|
3726 #endif /* ERROR_CHECK_GC */
|
|
|
3727
|
|
0
|
3728 #ifndef ALLOC_NO_POOLS
|
|
|
3729 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (cons, struct Lisp_Cons, ptr);
|
|
|
3730 #endif /* ALLOC_NO_POOLS */
|
|
|
3731 }
|
|
|
3732
|
|
|
3733 /* explicitly free a list. You **must make sure** that you have
|
|
|
3734 created all the cons cells that make up this list and that there
|
|
|
3735 are no pointers to any of these cons cells anywhere else. If there
|
|
|
3736 are, you will lose. */
|
|
|
3737
|
|
|
3738 void
|
|
|
3739 free_list (Lisp_Object list)
|
|
|
3740 {
|
|
|
3741 Lisp_Object rest, next;
|
|
|
3742
|
|
|
3743 for (rest = list; !NILP (rest); rest = next)
|
|
|
3744 {
|
|
|
3745 next = XCDR (rest);
|
|
|
3746 free_cons (XCONS (rest));
|
|
|
3747 }
|
|
|
3748 }
|
|
|
3749
|
|
|
3750 /* explicitly free an alist. You **must make sure** that you have
|
|
|
3751 created all the cons cells that make up this alist and that there
|
|
|
3752 are no pointers to any of these cons cells anywhere else. If there
|
|
|
3753 are, you will lose. */
|
|
|
3754
|
|
|
3755 void
|
|
|
3756 free_alist (Lisp_Object alist)
|
|
|
3757 {
|
|
|
3758 Lisp_Object rest, next;
|
|
|
3759
|
|
|
3760 for (rest = alist; !NILP (rest); rest = next)
|
|
|
3761 {
|
|
|
3762 next = XCDR (rest);
|
|
|
3763 free_cons (XCONS (XCAR (rest)));
|
|
|
3764 free_cons (XCONS (rest));
|
|
|
3765 }
|
|
|
3766 }
|
|
|
3767
|
|
|
3768 static void
|
|
|
3769 sweep_compiled_functions (void)
|
|
|
3770 {
|
|
|
3771 #define MARKED_compiled_function_P(ptr) \
|
|
|
3772 MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3773 #define UNMARK_compiled_function(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3774 #define ADDITIONAL_FREE_compiled_function(ptr)
|
|
|
3775
|
|
380
|
3776 SWEEP_FIXED_TYPE_BLOCK (compiled_function, Lisp_Compiled_Function);
|
|
0
|
3777 }
|
|
|
3778
|
|
|
3779
|
|
|
3780 #ifdef LISP_FLOAT_TYPE
|
|
|
3781 static void
|
|
|
3782 sweep_floats (void)
|
|
|
3783 {
|
|
|
3784 #define MARKED_float_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3785 #define UNMARK_float(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3786 #define ADDITIONAL_FREE_float(ptr)
|
|
|
3787
|
|
|
3788 SWEEP_FIXED_TYPE_BLOCK (float, struct Lisp_Float);
|
|
|
3789 }
|
|
|
3790 #endif /* LISP_FLOAT_TYPE */
|
|
|
3791
|
|
|
3792 static void
|
|
|
3793 sweep_symbols (void)
|
|
|
3794 {
|
|
|
3795 #ifndef LRECORD_SYMBOL
|
|
|
3796 # define MARKED_symbol_P(ptr) XMARKBIT ((ptr)->plist)
|
|
|
3797 # define UNMARK_symbol(ptr) do { XUNMARK ((ptr)->plist); } while (0)
|
|
|
3798 #else
|
|
|
3799 # define MARKED_symbol_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3800 # define UNMARK_symbol(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3801 #endif /* !LRECORD_SYMBOL */
|
|
|
3802 #define ADDITIONAL_FREE_symbol(ptr)
|
|
|
3803
|
|
|
3804 SWEEP_FIXED_TYPE_BLOCK (symbol, struct Lisp_Symbol);
|
|
|
3805 }
|
|
|
3806
|
|
|
3807 static void
|
|
|
3808 sweep_extents (void)
|
|
|
3809 {
|
|
|
3810 #define MARKED_extent_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3811 #define UNMARK_extent(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3812 #define ADDITIONAL_FREE_extent(ptr)
|
|
|
3813
|
|
|
3814 SWEEP_FIXED_TYPE_BLOCK (extent, struct extent);
|
|
|
3815 }
|
|
|
3816
|
|
|
3817 static void
|
|
|
3818 sweep_events (void)
|
|
|
3819 {
|
|
|
3820 #define MARKED_event_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3821 #define UNMARK_event(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3822 #define ADDITIONAL_FREE_event(ptr)
|
|
|
3823
|
|
|
3824 SWEEP_FIXED_TYPE_BLOCK (event, struct Lisp_Event);
|
|
|
3825 }
|
|
|
3826
|
|
|
3827 static void
|
|
|
3828 sweep_markers (void)
|
|
|
3829 {
|
|
|
3830 #define MARKED_marker_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
3831 #define UNMARK_marker(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
|
|
|
3832 #define ADDITIONAL_FREE_marker(ptr) \
|
|
|
3833 do { Lisp_Object tem; \
|
|
|
3834 XSETMARKER (tem, ptr); \
|
|
|
3835 unchain_marker (tem); \
|
|
|
3836 } while (0)
|
|
|
3837
|
|
|
3838 SWEEP_FIXED_TYPE_BLOCK (marker, struct Lisp_Marker);
|
|
|
3839 }
|
|
|
3840
|
|
|
3841 /* Explicitly free a marker. */
|
|
|
3842 void
|
|
|
3843 free_marker (struct Lisp_Marker *ptr)
|
|
|
3844 {
|
|
|
3845 #ifdef ERROR_CHECK_GC
|
|
|
3846 /* Perhaps this will catch freeing an already-freed marker. */
|
|
|
3847 Lisp_Object temmy;
|
|
|
3848 XSETMARKER (temmy, ptr);
|
|
|
3849 assert (GC_MARKERP (temmy));
|
|
183
|
3850 #endif /* ERROR_CHECK_GC */
|
|
|
3851
|
|
0
|
3852 #ifndef ALLOC_NO_POOLS
|
|
|
3853 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (marker, struct Lisp_Marker, ptr);
|
|
|
3854 #endif /* ALLOC_NO_POOLS */
|
|
|
3855 }
|
|
|
3856
|
|
70
|
3857
|
|
|
3858 #if defined (MULE) && defined (VERIFY_STRING_CHARS_INTEGRITY)
|
|
|
3859
|
|
|
3860 static void
|
|
|
3861 verify_string_chars_integrity (void)
|
|
|
3862 {
|
|
|
3863 struct string_chars_block *sb;
|
|
|
3864
|
|
|
3865 /* Scan each existing string block sequentially, string by string. */
|
|
|
3866 for (sb = first_string_chars_block; sb; sb = sb->next)
|
|
|
3867 {
|
|
|
3868 int pos = 0;
|
|
|
3869 /* POS is the index of the next string in the block. */
|
|
|
3870 while (pos < sb->pos)
|
|
|
3871 {
|
|
183
|
3872 struct string_chars *s_chars =
|
|
70
|
3873 (struct string_chars *) &(sb->string_chars[pos]);
|
|
|
3874 struct Lisp_String *string;
|
|
|
3875 int size;
|
|
|
3876 int fullsize;
|
|
|
3877
|
|
|
3878 /* If the string_chars struct is marked as free (i.e. the STRING
|
|
|
3879 pointer is 0xFFFFFFFF) then this is an unused chunk of string
|
|
|
3880 storage. (See below.) */
|
|
|
3881
|
|
|
3882 if (FREE_STRUCT_P (s_chars))
|
|
|
3883 {
|
|
|
3884 fullsize = ((struct unused_string_chars *) s_chars)->fullsize;
|
|
|
3885 pos += fullsize;
|
|
|
3886 continue;
|
|
|
3887 }
|
|
|
3888
|
|
|
3889 string = s_chars->string;
|
|
|
3890 /* Must be 32-bit aligned. */
|
|
|
3891 assert ((((int) string) & 3) == 0);
|
|
|
3892
|
|
|
3893 size = string_length (string);
|
|
|
3894 fullsize = STRING_FULLSIZE (size);
|
|
|
3895
|
|
|
3896 assert (!BIG_STRING_FULLSIZE_P (fullsize));
|
|
|
3897 assert (string_data (string) == s_chars->chars);
|
|
|
3898 pos += fullsize;
|
|
|
3899 }
|
|
|
3900 assert (pos == sb->pos);
|
|
|
3901 }
|
|
|
3902 }
|
|
|
3903
|
|
|
3904 #endif /* MULE && ERROR_CHECK_GC */
|
|
|
3905
|
|
0
|
3906 /* Compactify string chars, relocating the reference to each --
|
|
|
3907 free any empty string_chars_block we see. */
|
|
|
3908 static void
|
|
|
3909 compact_string_chars (void)
|
|
|
3910 {
|
|
|
3911 struct string_chars_block *to_sb = first_string_chars_block;
|
|
|
3912 int to_pos = 0;
|
|
|
3913 struct string_chars_block *from_sb;
|
|
|
3914
|
|
|
3915 /* Scan each existing string block sequentially, string by string. */
|
|
|
3916 for (from_sb = first_string_chars_block; from_sb; from_sb = from_sb->next)
|
|
|
3917 {
|
|
|
3918 int from_pos = 0;
|
|
|
3919 /* FROM_POS is the index of the next string in the block. */
|
|
|
3920 while (from_pos < from_sb->pos)
|
|
|
3921 {
|
|
183
|
3922 struct string_chars *from_s_chars =
|
|
0
|
3923 (struct string_chars *) &(from_sb->string_chars[from_pos]);
|
|
|
3924 struct string_chars *to_s_chars;
|
|
|
3925 struct Lisp_String *string;
|
|
|
3926 int size;
|
|
|
3927 int fullsize;
|
|
|
3928
|
|
|
3929 /* If the string_chars struct is marked as free (i.e. the STRING
|
|
|
3930 pointer is 0xFFFFFFFF) then this is an unused chunk of string
|
|
|
3931 storage. This happens under Mule when a string's size changes
|
|
|
3932 in such a way that its fullsize changes. (Strings can change
|
|
|
3933 size because a different-length character can be substituted
|
|
|
3934 for another character.) In this case, after the bogus string
|
|
|
3935 pointer is the "fullsize" of this entry, i.e. how many bytes
|
|
|
3936 to skip. */
|
|
|
3937
|
|
|
3938 if (FREE_STRUCT_P (from_s_chars))
|
|
|
3939 {
|
|
|
3940 fullsize = ((struct unused_string_chars *) from_s_chars)->fullsize;
|
|
|
3941 from_pos += fullsize;
|
|
|
3942 continue;
|
|
|
3943 }
|
|
|
3944
|
|
|
3945 string = from_s_chars->string;
|
|
|
3946 assert (!(FREE_STRUCT_P (string)));
|
|
|
3947
|
|
|
3948 size = string_length (string);
|
|
|
3949 fullsize = STRING_FULLSIZE (size);
|
|
|
3950
|
|
|
3951 if (BIG_STRING_FULLSIZE_P (fullsize))
|
|
|
3952 abort ();
|
|
|
3953
|
|
|
3954 /* Just skip it if it isn't marked. */
|
|
207
|
3955 #ifdef LRECORD_STRING
|
|
|
3956 if (! MARKED_RECORD_HEADER_P (&(string->lheader)))
|
|
|
3957 #else
|
|
0
|
3958 if (!XMARKBIT (string->plist))
|
|
207
|
3959 #endif
|
|
0
|
3960 {
|
|
|
3961 from_pos += fullsize;
|
|
|
3962 continue;
|
|
|
3963 }
|
|
|
3964
|
|
|
3965 /* If it won't fit in what's left of TO_SB, close TO_SB out
|
|
|
3966 and go on to the next string_chars_block. We know that TO_SB
|
|
|
3967 cannot advance past FROM_SB here since FROM_SB is large enough
|
|
|
3968 to currently contain this string. */
|
|
|
3969 if ((to_pos + fullsize) > countof (to_sb->string_chars))
|
|
|
3970 {
|
|
|
3971 to_sb->pos = to_pos;
|
|
|
3972 to_sb = to_sb->next;
|
|
|
3973 to_pos = 0;
|
|
|
3974 }
|
|
183
|
3975
|
|
0
|
3976 /* Compute new address of this string
|
|
|
3977 and update TO_POS for the space being used. */
|
|
|
3978 to_s_chars = (struct string_chars *) &(to_sb->string_chars[to_pos]);
|
|
|
3979
|
|
|
3980 /* Copy the string_chars to the new place. */
|
|
|
3981 if (from_s_chars != to_s_chars)
|
|
|
3982 memmove (to_s_chars, from_s_chars, fullsize);
|
|
|
3983
|
|
|
3984 /* Relocate FROM_S_CHARS's reference */
|
|
|
3985 set_string_data (string, &(to_s_chars->chars[0]));
|
|
183
|
3986
|
|
0
|
3987 from_pos += fullsize;
|
|
|
3988 to_pos += fullsize;
|
|
|
3989 }
|
|
|
3990 }
|
|
|
3991
|
|
183
|
3992 /* Set current to the last string chars block still used and
|
|
0
|
3993 free any that follow. */
|
|
|
3994 {
|
|
|
3995 struct string_chars_block *victim;
|
|
|
3996
|
|
|
3997 for (victim = to_sb->next; victim; )
|
|
|
3998 {
|
|
|
3999 struct string_chars_block *next = victim->next;
|
|
|
4000 xfree (victim);
|
|
|
4001 victim = next;
|
|
|
4002 }
|
|
|
4003
|
|
|
4004 current_string_chars_block = to_sb;
|
|
|
4005 current_string_chars_block->pos = to_pos;
|
|
|
4006 current_string_chars_block->next = 0;
|
|
|
4007 }
|
|
|
4008 }
|
|
|
4009
|
|
|
4010 #if 1 /* Hack to debug missing purecopy's */
|
|
|
4011 static int debug_string_purity;
|
|
|
4012
|
|
|
4013 static void
|
|
|
4014 debug_string_purity_print (struct Lisp_String *p)
|
|
|
4015 {
|
|
|
4016 Charcount i;
|
|
|
4017 Charcount s = string_char_length (p);
|
|
|
4018 putc ('\"', stderr);
|
|
|
4019 for (i = 0; i < s; i++)
|
|
|
4020 {
|
|
|
4021 Emchar ch = string_char (p, i);
|
|
|
4022 if (ch < 32 || ch >= 126)
|
|
|
4023 stderr_out ("\\%03o", ch);
|
|
|
4024 else if (ch == '\\' || ch == '\"')
|
|
|
4025 stderr_out ("\\%c", ch);
|
|
|
4026 else
|
|
|
4027 stderr_out ("%c", ch);
|
|
|
4028 }
|
|
|
4029 stderr_out ("\"\n");
|
|
|
4030 }
|
|
183
|
4031 #endif /* 1 */
|
|
0
|
4032
|
|
|
4033
|
|
|
4034 static void
|
|
|
4035 sweep_strings (void)
|
|
|
4036 {
|
|
|
4037 int num_small_used = 0, num_small_bytes = 0, num_bytes = 0;
|
|
|
4038 int debug = debug_string_purity;
|
|
|
4039
|
|
207
|
4040 #ifdef LRECORD_STRING
|
|
|
4041
|
|
|
4042 # define MARKED_string_P(ptr) MARKED_RECORD_HEADER_P (&((ptr)->lheader))
|
|
|
4043 # define UNMARK_string(ptr) \
|
|
|
4044 do { struct Lisp_String *p = (ptr); \
|
|
|
4045 int size = string_length (p); \
|
|
|
4046 UNMARK_RECORD_HEADER (&(p->lheader)); \
|
|
|
4047 num_bytes += size; \
|
|
|
4048 if (!BIG_STRING_SIZE_P (size)) \
|
|
|
4049 { num_small_bytes += size; \
|
|
|
4050 num_small_used++; \
|
|
|
4051 } \
|
|
|
4052 if (debug) debug_string_purity_print (p); \
|
|
|
4053 } while (0)
|
|
|
4054 # define ADDITIONAL_FREE_string(p) \
|
|
|
4055 do { int size = string_length (p); \
|
|
|
4056 if (BIG_STRING_SIZE_P (size)) \
|
|
371
|
4057 xfree_1 (CHARS_TO_STRING_CHAR (string_data (p))); \
|
|
207
|
4058 } while (0)
|
|
|
4059
|
|
|
4060 #else
|
|
|
4061
|
|
|
4062 # define MARKED_string_P(ptr) XMARKBIT ((ptr)->plist)
|
|
|
4063 # define UNMARK_string(ptr) \
|
|
0
|
4064 do { struct Lisp_String *p = (ptr); \
|
|
|
4065 int size = string_length (p); \
|
|
|
4066 XUNMARK (p->plist); \
|
|
|
4067 num_bytes += size; \
|
|
|
4068 if (!BIG_STRING_SIZE_P (size)) \
|
|
|
4069 { num_small_bytes += size; \
|
|
|
4070 num_small_used++; \
|
|
|
4071 } \
|
|
|
4072 if (debug) debug_string_purity_print (p); \
|
|
|
4073 } while (0)
|
|
207
|
4074 # define ADDITIONAL_FREE_string(p) \
|
|
0
|
4075 do { int size = string_length (p); \
|
|
|
4076 if (BIG_STRING_SIZE_P (size)) \
|
|
371
|
4077 xfree_1 (CHARS_TO_STRING_CHAR (string_data (p))); \
|
|
0
|
4078 } while (0)
|
|
|
4079
|
|
207
|
4080 #endif /* ! LRECORD_STRING */
|
|
|
4081
|
|
0
|
4082 SWEEP_FIXED_TYPE_BLOCK (string, struct Lisp_String);
|
|
|
4083
|
|
|
4084 gc_count_num_short_string_in_use = num_small_used;
|
|
|
4085 gc_count_string_total_size = num_bytes;
|
|
|
4086 gc_count_short_string_total_size = num_small_bytes;
|
|
|
4087 }
|
|
|
4088
|
|
|
4089
|
|
|
4090 /* I hate duplicating all this crap! */
|
|
|
4091 static int
|
|
|
4092 marked_p (Lisp_Object obj)
|
|
|
4093 {
|
|
380
|
4094 #ifdef ERROR_CHECK_GC
|
|
|
4095 assert (! (GC_EQ (obj, Qnull_pointer)));
|
|
|
4096 #endif
|
|
|
4097 /* Checks we used to perform. */
|
|
|
4098 /* if (EQ (obj, Qnull_pointer)) return 1; */
|
|
|
4099 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return 1; */
|
|
|
4100 /* if (PURIFIED (XPNTR (obj))) return 1; */
|
|
|
4101
|
|
0
|
4102 switch (XGCTYPE (obj))
|
|
|
4103 {
|
|
207
|
4104 #ifndef LRECORD_CONS
|
|
185
|
4105 case Lisp_Type_Cons:
|
|
380
|
4106 {
|
|
|
4107 struct Lisp_Cons *ptr = XCONS (obj);
|
|
|
4108 return PURIFIED (ptr) || XMARKBIT (ptr->car);
|
|
|
4109 }
|
|
207
|
4110 #endif
|
|
185
|
4111 case Lisp_Type_Record:
|
|
380
|
4112 {
|
|
|
4113 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
|
|
|
4114 #if defined (ERROR_CHECK_GC) && defined (USE_INDEXED_LRECORD_IMPLEMENTATION)
|
|
|
4115 assert (lheader->type <= last_lrecord_type_index_assigned);
|
|
|
4116 #endif
|
|
|
4117 return PURIFIED (lheader) || MARKED_RECORD_HEADER_P (lheader);
|
|
|
4118 }
|
|
207
|
4119 #ifndef LRECORD_STRING
|
|
185
|
4120 case Lisp_Type_String:
|
|
380
|
4121 {
|
|
|
4122 struct Lisp_String *ptr = XSTRING (obj);
|
|
|
4123 return PURIFIED (ptr) || XMARKBIT (ptr->plist);
|
|
|
4124 }
|
|
207
|
4125 #endif /* ! LRECORD_STRING */
|
|
185
|
4126 #ifndef LRECORD_VECTOR
|
|
|
4127 case Lisp_Type_Vector:
|
|
380
|
4128 {
|
|
|
4129 struct Lisp_Vector *ptr = XVECTOR (obj);
|
|
|
4130 return PURIFIED (ptr) || vector_length (ptr) < 0;
|
|
|
4131 }
|
|
185
|
4132 #endif /* !LRECORD_VECTOR */
|
|
0
|
4133 #ifndef LRECORD_SYMBOL
|
|
185
|
4134 case Lisp_Type_Symbol:
|
|
380
|
4135 {
|
|
|
4136 struct Lisp_Symbol *ptr = XSYMBOL (obj);
|
|
|
4137 return PURIFIED (ptr) || XMARKBIT (ptr->plist);
|
|
|
4138 }
|
|
0
|
4139 #endif
|
|
380
|
4140
|
|
|
4141 /* Ints and Chars don't need GC */
|
|
|
4142 #if defined (USE_MINIMAL_TAGBITS) || ! defined (ERROR_CHECK_GC)
|
|
0
|
4143 default:
|
|
380
|
4144 return 1;
|
|
|
4145 #else
|
|
|
4146 default:
|
|
|
4147 abort();
|
|
|
4148 case Lisp_Type_Int:
|
|
|
4149 case Lisp_Type_Char:
|
|
|
4150 return 1;
|
|
|
4151 #endif
|
|
0
|
4152 }
|
|
|
4153 }
|
|
|
4154
|
|
|
4155 static void
|
|
|
4156 gc_sweep (void)
|
|
|
4157 {
|
|
|
4158 /* Free all unmarked records. Do this at the very beginning,
|
|
|
4159 before anything else, so that the finalize methods can safely
|
|
|
4160 examine items in the objects. sweep_lcrecords_1() makes
|
|
|
4161 sure to call all the finalize methods *before* freeing anything,
|
|
|
4162 to complete the safety. */
|
|
|
4163 {
|
|
|
4164 int ignored;
|
|
|
4165 sweep_lcrecords_1 (&all_lcrecords, &ignored);
|
|
|
4166 }
|
|
|
4167
|
|
|
4168 compact_string_chars ();
|
|
|
4169
|
|
|
4170 /* Finalize methods below (called through the ADDITIONAL_FREE_foo
|
|
|
4171 macros) must be *extremely* careful to make sure they're not
|
|
|
4172 referencing freed objects. The only two existing finalize
|
|
|
4173 methods (for strings and markers) pass muster -- the string
|
|
|
4174 finalizer doesn't look at anything but its own specially-
|
|
|
4175 created block, and the marker finalizer only looks at live
|
|
|
4176 buffers (which will never be freed) and at the markers before
|
|
|
4177 and after it in the chain (which, by induction, will never be
|
|
|
4178 freed because if so, they would have already removed themselves
|
|
|
4179 from the chain). */
|
|
|
4180
|
|
|
4181 /* Put all unmarked strings on free list, free'ing the string chars
|
|
|
4182 of large unmarked strings */
|
|
|
4183 sweep_strings ();
|
|
|
4184
|
|
|
4185 /* Put all unmarked conses on free list */
|
|
|
4186 sweep_conses ();
|
|
|
4187
|
|
207
|
4188 #ifndef LRECORD_VECTOR
|
|
0
|
4189 /* Free all unmarked vectors */
|
|
|
4190 sweep_vectors_1 (&all_vectors,
|
|
|
4191 &gc_count_num_vector_used, &gc_count_vector_total_size,
|
|
|
4192 &gc_count_vector_storage);
|
|
207
|
4193 #endif
|
|
0
|
4194
|
|
|
4195 /* Free all unmarked bit vectors */
|
|
|
4196 sweep_bit_vectors_1 (&all_bit_vectors,
|
|
|
4197 &gc_count_num_bit_vector_used,
|
|
|
4198 &gc_count_bit_vector_total_size,
|
|
|
4199 &gc_count_bit_vector_storage);
|
|
|
4200
|
|
|
4201 /* Free all unmarked compiled-function objects */
|
|
|
4202 sweep_compiled_functions ();
|
|
|
4203
|
|
|
4204 #ifdef LISP_FLOAT_TYPE
|
|
|
4205 /* Put all unmarked floats on free list */
|
|
|
4206 sweep_floats ();
|
|
|
4207 #endif
|
|
|
4208
|
|
|
4209 /* Put all unmarked symbols on free list */
|
|
|
4210 sweep_symbols ();
|
|
|
4211
|
|
|
4212 /* Put all unmarked extents on free list */
|
|
|
4213 sweep_extents ();
|
|
|
4214
|
|
|
4215 /* Put all unmarked markers on free list.
|
|
|
4216 Dechain each one first from the buffer into which it points. */
|
|
|
4217 sweep_markers ();
|
|
|
4218
|
|
|
4219 sweep_events ();
|
|
|
4220
|
|
|
4221 }
|
|
|
4222
|
|
|
4223 /* Clearing for disksave. */
|
|
|
4224
|
|
|
4225 void
|
|
|
4226 disksave_object_finalization (void)
|
|
|
4227 {
|
|
|
4228 /* It's important that certain information from the environment not get
|
|
|
4229 dumped with the executable (pathnames, environment variables, etc.).
|
|
380
|
4230 To make it easier to tell when this has happened with strings(1) we
|
|
0
|
4231 clear some known-to-be-garbage blocks of memory, so that leftover
|
|
|
4232 results of old evaluation don't look like potential problems.
|
|
|
4233 But first we set some notable variables to nil and do one more GC,
|
|
|
4234 to turn those strings into garbage.
|
|
|
4235 */
|
|
|
4236
|
|
|
4237 /* Yeah, this list is pretty ad-hoc... */
|
|
|
4238 Vprocess_environment = Qnil;
|
|
|
4239 Vexec_directory = Qnil;
|
|
|
4240 Vdata_directory = Qnil;
|
|
110
|
4241 Vsite_directory = Qnil;
|
|
0
|
4242 Vdoc_directory = Qnil;
|
|
|
4243 Vconfigure_info_directory = Qnil;
|
|
|
4244 Vexec_path = Qnil;
|
|
|
4245 Vload_path = Qnil;
|
|
|
4246 /* Vdump_load_path = Qnil; */
|
|
288
|
4247 uncache_home_directory();
|
|
|
4248
|
|
233
|
4249 #if defined(LOADHIST) && !(defined(LOADHIST_DUMPED) || \
|
|
|
4250 defined(LOADHIST_BUILTIN))
|
|
0
|
4251 Vload_history = Qnil;
|
|
233
|
4252 #endif
|
|
0
|
4253 Vshell_file_name = Qnil;
|
|
|
4254
|
|
|
4255 garbage_collect_1 ();
|
|
|
4256
|
|
|
4257 /* Run the disksave finalization methods of all live objects. */
|
|
|
4258 disksave_object_finalization_1 ();
|
|
|
4259
|
|
249
|
4260 #if 0 /* I don't see any point in this. The purespace starts out all 0's */
|
|
0
|
4261 /* Zero out the unused portion of purespace */
|
|
|
4262 if (!pure_lossage)
|
|
272
|
4263 memset ( (char *) (PUREBEG + pure_bytes_used), 0,
|
|
171
|
4264 (((char *) (PUREBEG + get_PURESIZE())) -
|
|
272
|
4265 ((char *) (PUREBEG + pure_bytes_used))));
|
|
249
|
4266 #endif
|
|
0
|
4267
|
|
|
4268 /* Zero out the uninitialized (really, unused) part of the containers
|
|
|
4269 for the live strings. */
|
|
|
4270 {
|
|
|
4271 struct string_chars_block *scb;
|
|
|
4272 for (scb = first_string_chars_block; scb; scb = scb->next)
|
|
249
|
4273 {
|
|
|
4274 int count = sizeof (scb->string_chars) - scb->pos;
|
|
|
4275
|
|
|
4276 assert (count >= 0 && count < STRING_CHARS_BLOCK_SIZE);
|
|
|
4277 if (count != 0) {
|
|
|
4278 /* from the block's fill ptr to the end */
|
|
|
4279 memset ((scb->string_chars + scb->pos), 0, count);
|
|
|
4280 }
|
|
|
4281 }
|
|
0
|
4282 }
|
|
|
4283
|
|
|
4284 /* There, that ought to be enough... */
|
|
|
4285
|
|
|
4286 }
|
|
|
4287
|
|
|
4288
|
|
|
4289 Lisp_Object
|
|
|
4290 restore_gc_inhibit (Lisp_Object val)
|
|
|
4291 {
|
|
|
4292 gc_currently_forbidden = XINT (val);
|
|
|
4293 return val;
|
|
|
4294 }
|
|
|
4295
|
|
|
4296 /* Maybe we want to use this when doing a "panic" gc after memory_full()? */
|
|
|
4297 static int gc_hooks_inhibited;
|
|
|
4298
|
|
|
4299
|
|
|
4300 void
|
|
|
4301 garbage_collect_1 (void)
|
|
|
4302 {
|
|
380
|
4303 #if MAX_SAVE_STACK > 0
|
|
0
|
4304 char stack_top_variable;
|
|
|
4305 extern char *stack_bottom;
|
|
380
|
4306 #endif
|
|
0
|
4307 int i;
|
|
261
|
4308 struct frame *f;
|
|
272
|
4309 int speccount;
|
|
|
4310 int cursor_changed;
|
|
|
4311 Lisp_Object pre_gc_cursor;
|
|
0
|
4312 struct gcpro gcpro1;
|
|
|
4313
|
|
272
|
4314 if (gc_in_progress
|
|
|
4315 || gc_currently_forbidden
|
|
|
4316 || in_display
|
|
|
4317 || preparing_for_armageddon)
|
|
0
|
4318 return;
|
|
|
4319
|
|
380
|
4320 /* We used to call selected_frame() here.
|
|
|
4321
|
|
|
4322 The following functions cannot be called inside GC
|
|
|
4323 so we move to after the above tests. */
|
|
|
4324 {
|
|
|
4325 Lisp_Object frame;
|
|
|
4326 Lisp_Object device = Fselected_device (Qnil);
|
|
|
4327 if (NILP (device)) /* Could happen during startup, eg. if always_gc */
|
|
|
4328 return;
|
|
|
4329 frame = DEVICE_SELECTED_FRAME (XDEVICE (device));
|
|
|
4330 if (NILP (frame))
|
|
|
4331 signal_simple_error ("No frames exist on device", device);
|
|
|
4332 f = XFRAME (frame);
|
|
|
4333 }
|
|
|
4334
|
|
272
|
4335 pre_gc_cursor = Qnil;
|
|
|
4336 cursor_changed = 0;
|
|
0
|
4337
|
|
163
|
4338 GCPRO1 (pre_gc_cursor);
|
|
0
|
4339
|
|
|
4340 /* Very important to prevent GC during any of the following
|
|
|
4341 stuff that might run Lisp code; otherwise, we'll likely
|
|
|
4342 have infinite GC recursion. */
|
|
272
|
4343 speccount = specpdl_depth ();
|
|
0
|
4344 record_unwind_protect (restore_gc_inhibit,
|
|
|
4345 make_int (gc_currently_forbidden));
|
|
|
4346 gc_currently_forbidden = 1;
|
|
|
4347
|
|
|
4348 if (!gc_hooks_inhibited)
|
|
|
4349 run_hook_trapping_errors ("Error in pre-gc-hook", Qpre_gc_hook);
|
|
|
4350
|
|
|
4351 /* Now show the GC cursor/message. */
|
|
|
4352 if (!noninteractive)
|
|
|
4353 {
|
|
163
|
4354 if (FRAME_WIN_P (f))
|
|
0
|
4355 {
|
|
163
|
4356 Lisp_Object frame = make_frame (f);
|
|
|
4357 Lisp_Object cursor = glyph_image_instance (Vgc_pointer_glyph,
|
|
|
4358 FRAME_SELECTED_WINDOW (f),
|
|
|
4359 ERROR_ME_NOT, 1);
|
|
|
4360 pre_gc_cursor = f->pointer;
|
|
|
4361 if (POINTER_IMAGE_INSTANCEP (cursor)
|
|
|
4362 /* don't change if we don't know how to change back. */
|
|
|
4363 && POINTER_IMAGE_INSTANCEP (pre_gc_cursor))
|
|
0
|
4364 {
|
|
163
|
4365 cursor_changed = 1;
|
|
|
4366 Fset_frame_pointer (frame, cursor);
|
|
0
|
4367 }
|
|
|
4368 }
|
|
163
|
4369
|
|
|
4370 /* Don't print messages to the stream device. */
|
|
|
4371 if (!cursor_changed && !FRAME_STREAM_P (f))
|
|
|
4372 {
|
|
|
4373 char *msg = (STRINGP (Vgc_message)
|
|
|
4374 ? GETTEXT ((char *) XSTRING_DATA (Vgc_message))
|
|
|
4375 : 0);
|
|
|
4376 Lisp_Object args[2], whole_msg;
|
|
|
4377 args[0] = build_string (msg ? msg :
|
|
|
4378 GETTEXT ((CONST char *) gc_default_message));
|
|
|
4379 args[1] = build_string ("...");
|
|
|
4380 whole_msg = Fconcat (2, args);
|
|
|
4381 echo_area_message (f, (Bufbyte *) 0, whole_msg, 0, -1,
|
|
|
4382 Qgarbage_collecting);
|
|
|
4383 }
|
|
0
|
4384 }
|
|
|
4385
|
|
|
4386 /***** Now we actually start the garbage collection. */
|
|
|
4387
|
|
|
4388 gc_in_progress = 1;
|
|
|
4389
|
|
|
4390 gc_generation_number[0]++;
|
|
|
4391
|
|
|
4392 #if MAX_SAVE_STACK > 0
|
|
|
4393
|
|
|
4394 /* Save a copy of the contents of the stack, for debugging. */
|
|
|
4395 if (!purify_flag)
|
|
|
4396 {
|
|
272
|
4397 /* Static buffer in which we save a copy of the C stack at each GC. */
|
|
|
4398 static char *stack_copy;
|
|
|
4399 static size_t stack_copy_size;
|
|
|
4400
|
|
|
4401 ptrdiff_t stack_diff = &stack_top_variable - stack_bottom;
|
|
|
4402 size_t stack_size = (stack_diff > 0 ? stack_diff : -stack_diff);
|
|
|
4403 if (stack_size < MAX_SAVE_STACK)
|
|
0
|
4404 {
|
|
272
|
4405 if (stack_copy_size < stack_size)
|
|
0
|
4406 {
|
|
272
|
4407 stack_copy = (char *) xrealloc (stack_copy, stack_size);
|
|
|
4408 stack_copy_size = stack_size;
|
|
0
|
4409 }
|
|
272
|
4410
|
|
|
4411 memcpy (stack_copy,
|
|
|
4412 stack_diff > 0 ? stack_bottom : &stack_top_variable,
|
|
|
4413 stack_size);
|
|
0
|
4414 }
|
|
|
4415 }
|
|
|
4416 #endif /* MAX_SAVE_STACK > 0 */
|
|
|
4417
|
|
|
4418 /* Do some totally ad-hoc resource clearing. */
|
|
|
4419 /* #### generalize this? */
|
|
|
4420 clear_event_resource ();
|
|
|
4421 cleanup_specifiers ();
|
|
|
4422
|
|
|
4423 /* Mark all the special slots that serve as the roots of accessibility. */
|
|
|
4424 {
|
|
|
4425 struct gcpro *tail;
|
|
|
4426 struct catchtag *catch;
|
|
|
4427 struct backtrace *backlist;
|
|
|
4428 struct specbinding *bind;
|
|
|
4429
|
|
|
4430 for (i = 0; i < staticidx; i++)
|
|
|
4431 {
|
|
|
4432 mark_object (*(staticvec[i]));
|
|
|
4433 }
|
|
|
4434
|
|
|
4435 for (tail = gcprolist; tail; tail = tail->next)
|
|
|
4436 {
|
|
|
4437 for (i = 0; i < tail->nvars; i++)
|
|
|
4438 mark_object (tail->var[i]);
|
|
|
4439 }
|
|
|
4440
|
|
|
4441 for (bind = specpdl; bind != specpdl_ptr; bind++)
|
|
|
4442 {
|
|
|
4443 mark_object (bind->symbol);
|
|
|
4444 mark_object (bind->old_value);
|
|
|
4445 }
|
|
|
4446
|
|
|
4447 for (catch = catchlist; catch; catch = catch->next)
|
|
|
4448 {
|
|
|
4449 mark_object (catch->tag);
|
|
|
4450 mark_object (catch->val);
|
|
|
4451 }
|
|
|
4452
|
|
|
4453 for (backlist = backtrace_list; backlist; backlist = backlist->next)
|
|
|
4454 {
|
|
|
4455 int nargs = backlist->nargs;
|
|
|
4456
|
|
|
4457 mark_object (*backlist->function);
|
|
|
4458 if (nargs == UNEVALLED || nargs == MANY)
|
|
|
4459 mark_object (backlist->args[0]);
|
|
|
4460 else
|
|
|
4461 for (i = 0; i < nargs; i++)
|
|
|
4462 mark_object (backlist->args[i]);
|
|
|
4463 }
|
|
|
4464
|
|
|
4465 mark_redisplay (mark_object);
|
|
|
4466 mark_profiling_info (mark_object);
|
|
|
4467 }
|
|
|
4468
|
|
|
4469 /* OK, now do the after-mark stuff. This is for things that
|
|
380
|
4470 are only marked when something else is marked (e.g. weak hash tables).
|
|
0
|
4471 There may be complex dependencies between such objects -- e.g.
|
|
380
|
4472 a weak hash table might be unmarked, but after processing a later
|
|
|
4473 weak hash table, the former one might get marked. So we have to
|
|
0
|
4474 iterate until nothing more gets marked. */
|
|
380
|
4475
|
|
|
4476 while (finish_marking_weak_hash_tables (marked_p, mark_object) > 0 ||
|
|
|
4477 finish_marking_weak_lists (marked_p, mark_object) > 0)
|
|
|
4478 ;
|
|
0
|
4479
|
|
|
4480 /* And prune (this needs to be called after everything else has been
|
|
|
4481 marked and before we do any sweeping). */
|
|
|
4482 /* #### this is somewhat ad-hoc and should probably be an object
|
|
|
4483 method */
|
|
380
|
4484 prune_weak_hash_tables (marked_p);
|
|
0
|
4485 prune_weak_lists (marked_p);
|
|
|
4486 prune_specifiers (marked_p);
|
|
70
|
4487 prune_syntax_tables (marked_p);
|
|
0
|
4488
|
|
|
4489 gc_sweep ();
|
|
|
4490
|
|
|
4491 consing_since_gc = 0;
|
|
|
4492 #ifndef DEBUG_XEMACS
|
|
|
4493 /* Allow you to set it really fucking low if you really want ... */
|
|
|
4494 if (gc_cons_threshold < 10000)
|
|
|
4495 gc_cons_threshold = 10000;
|
|
|
4496 #endif
|
|
|
4497
|
|
|
4498 gc_in_progress = 0;
|
|
|
4499
|
|
|
4500 /******* End of garbage collection ********/
|
|
|
4501
|
|
|
4502 run_hook_trapping_errors ("Error in post-gc-hook", Qpost_gc_hook);
|
|
|
4503
|
|
|
4504 /* Now remove the GC cursor/message */
|
|
|
4505 if (!noninteractive)
|
|
|
4506 {
|
|
163
|
4507 if (cursor_changed)
|
|
|
4508 Fset_frame_pointer (make_frame (f), pre_gc_cursor);
|
|
|
4509 else if (!FRAME_STREAM_P (f))
|
|
0
|
4510 {
|
|
|
4511 char *msg = (STRINGP (Vgc_message)
|
|
14
|
4512 ? GETTEXT ((char *) XSTRING_DATA (Vgc_message))
|
|
0
|
4513 : 0);
|
|
|
4514
|
|
|
4515 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
183
|
4516 if (NILP (clear_echo_area (selected_frame (),
|
|
0
|
4517 Qgarbage_collecting, 0)))
|
|
|
4518 {
|
|
|
4519 Lisp_Object args[2], whole_msg;
|
|
|
4520 args[0] = build_string (msg ? msg :
|
|
|
4521 GETTEXT ((CONST char *)
|
|
|
4522 gc_default_message));
|
|
|
4523 args[1] = build_string ("... done");
|
|
|
4524 whole_msg = Fconcat (2, args);
|
|
|
4525 echo_area_message (selected_frame (), (Bufbyte *) 0,
|
|
|
4526 whole_msg, 0, -1,
|
|
|
4527 Qgarbage_collecting);
|
|
|
4528 }
|
|
|
4529 }
|
|
|
4530 }
|
|
|
4531
|
|
|
4532 /* now stop inhibiting GC */
|
|
|
4533 unbind_to (speccount, Qnil);
|
|
|
4534
|
|
|
4535 if (!breathing_space)
|
|
|
4536 {
|
|
272
|
4537 breathing_space = malloc (4096 - MALLOC_OVERHEAD);
|
|
0
|
4538 }
|
|
|
4539
|
|
|
4540 UNGCPRO;
|
|
|
4541 return;
|
|
|
4542 }
|
|
|
4543
|
|
|
4544 /* Debugging aids. */
|
|
|
4545
|
|
|
4546 static Lisp_Object
|
|
|
4547 gc_plist_hack (CONST char *name, int value, Lisp_Object tail)
|
|
|
4548 {
|
|
|
4549 /* C doesn't have local functions (or closures, or GC, or readable syntax,
|
|
|
4550 or portable numeric datatypes, or bit-vectors, or characters, or
|
|
|
4551 arrays, or exceptions, or ...) */
|
|
173
|
4552 return cons3 (intern (name), make_int (value), tail);
|
|
0
|
4553 }
|
|
|
4554
|
|
380
|
4555 #define HACK_O_MATIC(type, name, pl) do { \
|
|
|
4556 int s = 0; \
|
|
|
4557 struct type##_block *x = current_##type##_block; \
|
|
|
4558 while (x) { s += sizeof (*x) + MALLOC_OVERHEAD; x = x->prev; } \
|
|
|
4559 (pl) = gc_plist_hack ((name), s, (pl)); \
|
|
|
4560 } while (0)
|
|
0
|
4561
|
|
20
|
4562 DEFUN ("garbage-collect", Fgarbage_collect, 0, 0, "", /*
|
|
0
|
4563 Reclaim storage for Lisp objects no longer needed.
|
|
272
|
4564 Return info on amount of space in use:
|
|
0
|
4565 ((USED-CONSES . FREE-CONSES) (USED-SYMS . FREE-SYMS)
|
|
|
4566 (USED-MARKERS . FREE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS
|
|
183
|
4567 PLIST)
|
|
0
|
4568 where `PLIST' is a list of alternating keyword/value pairs providing
|
|
|
4569 more detailed information.
|
|
|
4570 Garbage collection happens automatically if you cons more than
|
|
|
4571 `gc-cons-threshold' bytes of Lisp data since previous garbage collection.
|
|
20
|
4572 */
|
|
|
4573 ())
|
|
0
|
4574 {
|
|
|
4575 Lisp_Object pl = Qnil;
|
|
|
4576 int i;
|
|
207
|
4577 #ifdef LRECORD_VECTOR
|
|
243
|
4578 int gc_count_vector_total_size = 0;
|
|
207
|
4579 #endif
|
|
0
|
4580
|
|
104
|
4581 if (purify_flag && pure_lossage)
|
|
272
|
4582 return Qnil;
|
|
104
|
4583
|
|
0
|
4584 garbage_collect_1 ();
|
|
|
4585
|
|
|
4586 for (i = 0; i < last_lrecord_type_index_assigned; i++)
|
|
|
4587 {
|
|
183
|
4588 if (lcrecord_stats[i].bytes_in_use != 0
|
|
0
|
4589 || lcrecord_stats[i].bytes_freed != 0
|
|
|
4590 || lcrecord_stats[i].instances_on_free_list != 0)
|
|
|
4591 {
|
|
|
4592 char buf [255];
|
|
|
4593 CONST char *name = lrecord_implementations_table[i]->name;
|
|
|
4594 int len = strlen (name);
|
|
207
|
4595 #ifdef LRECORD_VECTOR
|
|
|
4596 /* save this for the FSFmacs-compatible part of the summary */
|
|
|
4597 if (i == *lrecord_vector[0].lrecord_type_index)
|
|
|
4598 gc_count_vector_total_size =
|
|
|
4599 lcrecord_stats[i].bytes_in_use + lcrecord_stats[i].bytes_freed;
|
|
|
4600 #endif
|
|
0
|
4601 sprintf (buf, "%s-storage", name);
|
|
|
4602 pl = gc_plist_hack (buf, lcrecord_stats[i].bytes_in_use, pl);
|
|
|
4603 /* Okay, simple pluralization check for `symbol-value-varalias' */
|
|
|
4604 if (name[len-1] == 's')
|
|
|
4605 sprintf (buf, "%ses-freed", name);
|
|
|
4606 else
|
|
|
4607 sprintf (buf, "%ss-freed", name);
|
|
|
4608 if (lcrecord_stats[i].instances_freed != 0)
|
|
|
4609 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_freed, pl);
|
|
|
4610 if (name[len-1] == 's')
|
|
|
4611 sprintf (buf, "%ses-on-free-list", name);
|
|
|
4612 else
|
|
|
4613 sprintf (buf, "%ss-on-free-list", name);
|
|
|
4614 if (lcrecord_stats[i].instances_on_free_list != 0)
|
|
|
4615 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_on_free_list,
|
|
|
4616 pl);
|
|
|
4617 if (name[len-1] == 's')
|
|
|
4618 sprintf (buf, "%ses-used", name);
|
|
|
4619 else
|
|
|
4620 sprintf (buf, "%ss-used", name);
|
|
|
4621 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_in_use, pl);
|
|
|
4622 }
|
|
|
4623 }
|
|
|
4624
|
|
|
4625 HACK_O_MATIC (extent, "extent-storage", pl);
|
|
|
4626 pl = gc_plist_hack ("extents-free", gc_count_num_extent_freelist, pl);
|
|
|
4627 pl = gc_plist_hack ("extents-used", gc_count_num_extent_in_use, pl);
|
|
|
4628 HACK_O_MATIC (event, "event-storage", pl);
|
|
|
4629 pl = gc_plist_hack ("events-free", gc_count_num_event_freelist, pl);
|
|
|
4630 pl = gc_plist_hack ("events-used", gc_count_num_event_in_use, pl);
|
|
|
4631 HACK_O_MATIC (marker, "marker-storage", pl);
|
|
|
4632 pl = gc_plist_hack ("markers-free", gc_count_num_marker_freelist, pl);
|
|
|
4633 pl = gc_plist_hack ("markers-used", gc_count_num_marker_in_use, pl);
|
|
|
4634 #ifdef LISP_FLOAT_TYPE
|
|
|
4635 HACK_O_MATIC (float, "float-storage", pl);
|
|
|
4636 pl = gc_plist_hack ("floats-free", gc_count_num_float_freelist, pl);
|
|
|
4637 pl = gc_plist_hack ("floats-used", gc_count_num_float_in_use, pl);
|
|
|
4638 #endif /* LISP_FLOAT_TYPE */
|
|
|
4639 HACK_O_MATIC (string, "string-header-storage", pl);
|
|
183
|
4640 pl = gc_plist_hack ("long-strings-total-length",
|
|
0
|
4641 gc_count_string_total_size
|
|
|
4642 - gc_count_short_string_total_size, pl);
|
|
|
4643 HACK_O_MATIC (string_chars, "short-string-storage", pl);
|
|
|
4644 pl = gc_plist_hack ("short-strings-total-length",
|
|
|
4645 gc_count_short_string_total_size, pl);
|
|
|
4646 pl = gc_plist_hack ("strings-free", gc_count_num_string_freelist, pl);
|
|
183
|
4647 pl = gc_plist_hack ("long-strings-used",
|
|
0
|
4648 gc_count_num_string_in_use
|
|
|
4649 - gc_count_num_short_string_in_use, pl);
|
|
183
|
4650 pl = gc_plist_hack ("short-strings-used",
|
|
0
|
4651 gc_count_num_short_string_in_use, pl);
|
|
|
4652
|
|
|
4653 HACK_O_MATIC (compiled_function, "compiled-function-storage", pl);
|
|
|
4654 pl = gc_plist_hack ("compiled-functions-free",
|
|
|
4655 gc_count_num_compiled_function_freelist, pl);
|
|
|
4656 pl = gc_plist_hack ("compiled-functions-used",
|
|
|
4657 gc_count_num_compiled_function_in_use, pl);
|
|
|
4658
|
|
207
|
4659 #ifndef LRECORD_VECTOR
|
|
0
|
4660 pl = gc_plist_hack ("vector-storage", gc_count_vector_storage, pl);
|
|
183
|
4661 pl = gc_plist_hack ("vectors-total-length",
|
|
0
|
4662 gc_count_vector_total_size, pl);
|
|
|
4663 pl = gc_plist_hack ("vectors-used", gc_count_num_vector_used, pl);
|
|
207
|
4664 #endif
|
|
0
|
4665
|
|
|
4666 pl = gc_plist_hack ("bit-vector-storage", gc_count_bit_vector_storage, pl);
|
|
183
|
4667 pl = gc_plist_hack ("bit-vectors-total-length",
|
|
0
|
4668 gc_count_bit_vector_total_size, pl);
|
|
|
4669 pl = gc_plist_hack ("bit-vectors-used", gc_count_num_bit_vector_used, pl);
|
|
|
4670
|
|
|
4671 HACK_O_MATIC (symbol, "symbol-storage", pl);
|
|
|
4672 pl = gc_plist_hack ("symbols-free", gc_count_num_symbol_freelist, pl);
|
|
|
4673 pl = gc_plist_hack ("symbols-used", gc_count_num_symbol_in_use, pl);
|
|
|
4674
|
|
|
4675 HACK_O_MATIC (cons, "cons-storage", pl);
|
|
|
4676 pl = gc_plist_hack ("conses-free", gc_count_num_cons_freelist, pl);
|
|
|
4677 pl = gc_plist_hack ("conses-used", gc_count_num_cons_in_use, pl);
|
|
|
4678
|
|
|
4679 /* The things we do for backwards-compatibility */
|
|
272
|
4680 return
|
|
|
4681 list6 (Fcons (make_int (gc_count_num_cons_in_use),
|
|
|
4682 make_int (gc_count_num_cons_freelist)),
|
|
|
4683 Fcons (make_int (gc_count_num_symbol_in_use),
|
|
|
4684 make_int (gc_count_num_symbol_freelist)),
|
|
|
4685 Fcons (make_int (gc_count_num_marker_in_use),
|
|
|
4686 make_int (gc_count_num_marker_freelist)),
|
|
|
4687 make_int (gc_count_string_total_size),
|
|
|
4688 make_int (gc_count_vector_total_size),
|
|
|
4689 pl);
|
|
0
|
4690 }
|
|
|
4691 #undef HACK_O_MATIC
|
|
|
4692
|
|
20
|
4693 DEFUN ("consing-since-gc", Fconsing_since_gc, 0, 0, "", /*
|
|
0
|
4694 Return the number of bytes consed since the last garbage collection.
|
|
|
4695 \"Consed\" is a misnomer in that this actually counts allocation
|
|
|
4696 of all different kinds of objects, not just conses.
|
|
|
4697
|
|
|
4698 If this value exceeds `gc-cons-threshold', a garbage collection happens.
|
|
20
|
4699 */
|
|
|
4700 ())
|
|
0
|
4701 {
|
|
173
|
4702 return make_int (consing_since_gc);
|
|
0
|
4703 }
|
|
183
|
4704
|
|
20
|
4705 DEFUN ("memory-limit", Fmemory_limit, 0, 0, "", /*
|
|
0
|
4706 Return the address of the last byte Emacs has allocated, divided by 1024.
|
|
|
4707 This may be helpful in debugging Emacs's memory usage.
|
|
|
4708 The value is divided by 1024 to make sure it will fit in a lisp integer.
|
|
20
|
4709 */
|
|
|
4710 ())
|
|
0
|
4711 {
|
|
173
|
4712 return make_int ((EMACS_INT) sbrk (0) / 1024);
|
|
0
|
4713 }
|
|
|
4714
|
|
|
4715
|
|
|
4716
|
|
|
4717 int
|
|
|
4718 object_dead_p (Lisp_Object obj)
|
|
|
4719 {
|
|
173
|
4720 return ((BUFFERP (obj) && !BUFFER_LIVE_P (XBUFFER (obj))) ||
|
|
|
4721 (FRAMEP (obj) && !FRAME_LIVE_P (XFRAME (obj))) ||
|
|
|
4722 (WINDOWP (obj) && !WINDOW_LIVE_P (XWINDOW (obj))) ||
|
|
|
4723 (DEVICEP (obj) && !DEVICE_LIVE_P (XDEVICE (obj))) ||
|
|
0
|
4724 (CONSOLEP (obj) && !CONSOLE_LIVE_P (XCONSOLE (obj))) ||
|
|
173
|
4725 (EVENTP (obj) && !EVENT_LIVE_P (XEVENT (obj))) ||
|
|
|
4726 (EXTENTP (obj) && !EXTENT_LIVE_P (XEXTENT (obj))));
|
|
0
|
4727 }
|
|
|
4728
|
|
|
4729 #ifdef MEMORY_USAGE_STATS
|
|
|
4730
|
|
|
4731 /* Attempt to determine the actual amount of space that is used for
|
|
|
4732 the block allocated starting at PTR, supposedly of size "CLAIMED_SIZE".
|
|
|
4733
|
|
|
4734 It seems that the following holds:
|
|
|
4735
|
|
|
4736 1. When using the old allocator (malloc.c):
|
|
|
4737
|
|
|
4738 -- blocks are always allocated in chunks of powers of two. For
|
|
|
4739 each block, there is an overhead of 8 bytes if rcheck is not
|
|
|
4740 defined, 20 bytes if it is defined. In other words, a
|
|
|
4741 one-byte allocation needs 8 bytes of overhead for a total of
|
|
|
4742 9 bytes, and needs to have 16 bytes of memory chunked out for
|
|
|
4743 it.
|
|
|
4744
|
|
|
4745 2. When using the new allocator (gmalloc.c):
|
|
|
4746
|
|
|
4747 -- blocks are always allocated in chunks of powers of two up
|
|
|
4748 to 4096 bytes. Larger blocks are allocated in chunks of
|
|
|
4749 an integral multiple of 4096 bytes. The minimum block
|
|
|
4750 size is 2*sizeof (void *), or 16 bytes if SUNOS_LOCALTIME_BUG
|
|
|
4751 is defined. There is no per-block overhead, but there
|
|
|
4752 is an overhead of 3*sizeof (size_t) for each 4096 bytes
|
|
|
4753 allocated.
|
|
|
4754
|
|
|
4755 3. When using the system malloc, anything goes, but they are
|
|
|
4756 generally slower and more space-efficient than the GNU
|
|
|
4757 allocators. One possibly reasonable assumption to make
|
|
|
4758 for want of better data is that sizeof (void *), or maybe
|
|
|
4759 2 * sizeof (void *), is required as overhead and that
|
|
|
4760 blocks are allocated in the minimum required size except
|
|
|
4761 that some minimum block size is imposed (e.g. 16 bytes). */
|
|
|
4762
|
|
272
|
4763 size_t
|
|
|
4764 malloced_storage_size (void *ptr, size_t claimed_size,
|
|
0
|
4765 struct overhead_stats *stats)
|
|
|
4766 {
|
|
272
|
4767 size_t orig_claimed_size = claimed_size;
|
|
0
|
4768
|
|
|
4769 #ifdef GNU_MALLOC
|
|
|
4770
|
|
|
4771 if (claimed_size < 2 * sizeof (void *))
|
|
|
4772 claimed_size = 2 * sizeof (void *);
|
|
|
4773 # ifdef SUNOS_LOCALTIME_BUG
|
|
|
4774 if (claimed_size < 16)
|
|
|
4775 claimed_size = 16;
|
|
|
4776 # endif
|
|
|
4777 if (claimed_size < 4096)
|
|
|
4778 {
|
|
|
4779 int log = 1;
|
|
|
4780
|
|
|
4781 /* compute the log base two, more or less, then use it to compute
|
|
|
4782 the block size needed. */
|
|
|
4783 claimed_size--;
|
|
|
4784 /* It's big, it's heavy, it's wood! */
|
|
|
4785 while ((claimed_size /= 2) != 0)
|
|
|
4786 ++log;
|
|
|
4787 claimed_size = 1;
|
|
|
4788 /* It's better than bad, it's good! */
|
|
|
4789 while (log > 0)
|
|
|
4790 {
|
|
|
4791 claimed_size *= 2;
|
|
|
4792 log--;
|
|
|
4793 }
|
|
|
4794 /* We have to come up with some average about the amount of
|
|
|
4795 blocks used. */
|
|
272
|
4796 if ((size_t) (rand () & 4095) < claimed_size)
|
|
0
|
4797 claimed_size += 3 * sizeof (void *);
|
|
|
4798 }
|
|
|
4799 else
|
|
|
4800 {
|
|
|
4801 claimed_size += 4095;
|
|
|
4802 claimed_size &= ~4095;
|
|
|
4803 claimed_size += (claimed_size / 4096) * 3 * sizeof (size_t);
|
|
|
4804 }
|
|
|
4805
|
|
|
4806 #elif defined (SYSTEM_MALLOC)
|
|
|
4807
|
|
|
4808 if (claimed_size < 16)
|
|
|
4809 claimed_size = 16;
|
|
|
4810 claimed_size += 2 * sizeof (void *);
|
|
|
4811
|
|
|
4812 #else /* old GNU allocator */
|
|
|
4813
|
|
|
4814 # ifdef rcheck /* #### may not be defined here */
|
|
|
4815 claimed_size += 20;
|
|
|
4816 # else
|
|
|
4817 claimed_size += 8;
|
|
|
4818 # endif
|
|
|
4819 {
|
|
|
4820 int log = 1;
|
|
|
4821
|
|
|
4822 /* compute the log base two, more or less, then use it to compute
|
|
|
4823 the block size needed. */
|
|
|
4824 claimed_size--;
|
|
|
4825 /* It's big, it's heavy, it's wood! */
|
|
|
4826 while ((claimed_size /= 2) != 0)
|
|
|
4827 ++log;
|
|
|
4828 claimed_size = 1;
|
|
|
4829 /* It's better than bad, it's good! */
|
|
|
4830 while (log > 0)
|
|
|
4831 {
|
|
|
4832 claimed_size *= 2;
|
|
|
4833 log--;
|
|
|
4834 }
|
|
|
4835 }
|
|
|
4836
|
|
|
4837 #endif /* old GNU allocator */
|
|
|
4838
|
|
|
4839 if (stats)
|
|
|
4840 {
|
|
|
4841 stats->was_requested += orig_claimed_size;
|
|
|
4842 stats->malloc_overhead += claimed_size - orig_claimed_size;
|
|
|
4843 }
|
|
|
4844 return claimed_size;
|
|
|
4845 }
|
|
|
4846
|
|
272
|
4847 size_t
|
|
|
4848 fixed_type_block_overhead (size_t size)
|
|
0
|
4849 {
|
|
272
|
4850 size_t per_block = TYPE_ALLOC_SIZE (cons, unsigned char);
|
|
|
4851 size_t overhead = 0;
|
|
|
4852 size_t storage_size = malloced_storage_size (0, per_block, 0);
|
|
0
|
4853 while (size >= per_block)
|
|
|
4854 {
|
|
|
4855 size -= per_block;
|
|
|
4856 overhead += sizeof (void *) + per_block - storage_size;
|
|
|
4857 }
|
|
|
4858 if (rand () % per_block < size)
|
|
|
4859 overhead += sizeof (void *) + per_block - storage_size;
|
|
|
4860 return overhead;
|
|
|
4861 }
|
|
|
4862
|
|
|
4863 #endif /* MEMORY_USAGE_STATS */
|
|
|
4864
|
|
|
4865
|
|
|
4866 /* Initialization */
|
|
|
4867 void
|
|
|
4868 init_alloc_once_early (void)
|
|
|
4869 {
|
|
|
4870 int iii;
|
|
|
4871
|
|
|
4872 last_lrecord_type_index_assigned = -1;
|
|
|
4873 for (iii = 0; iii < countof (lrecord_implementations_table); iii++)
|
|
|
4874 {
|
|
|
4875 lrecord_implementations_table[iii] = 0;
|
|
|
4876 }
|
|
183
|
4877
|
|
211
|
4878 #ifdef USE_INDEXED_LRECORD_IMPLEMENTATION
|
|
|
4879 /*
|
|
|
4880 * If USE_INDEXED_LRECORD_IMPLEMENTATION is defined, all the staticly
|
|
|
4881 * defined subr lrecords were initialized with lheader->type == 0.
|
|
|
4882 * See subr_lheader_initializer in lisp.h. Force type index 0 to be
|
|
|
4883 * assigned to lrecord_subr so that those predefined indexes match
|
|
|
4884 * reality.
|
|
|
4885 */
|
|
272
|
4886 lrecord_type_index (lrecord_subr);
|
|
211
|
4887 assert (*(lrecord_subr[0].lrecord_type_index) == 0);
|
|
|
4888 /*
|
|
|
4889 * The same is true for symbol_value_forward objects, except the
|
|
|
4890 * type is 1.
|
|
|
4891 */
|
|
272
|
4892 lrecord_type_index (lrecord_symbol_value_forward);
|
|
211
|
4893 assert (*(lrecord_symbol_value_forward[0].lrecord_type_index) == 1);
|
|
272
|
4894 #endif /* USE_INDEXED_LRECORD_IMPLEMENTATION */
|
|
211
|
4895
|
|
0
|
4896 symbols_initialized = 0;
|
|
183
|
4897
|
|
0
|
4898 gc_generation_number[0] = 0;
|
|
|
4899 /* purify_flag 1 is correct even if CANNOT_DUMP.
|
|
|
4900 * loadup.el will set to nil at end. */
|
|
|
4901 purify_flag = 1;
|
|
272
|
4902 pure_bytes_used = 0;
|
|
0
|
4903 pure_lossage = 0;
|
|
|
4904 breathing_space = 0;
|
|
207
|
4905 #ifndef LRECORD_VECTOR
|
|
0
|
4906 XSETINT (all_vectors, 0); /* Qzero may not be set yet. */
|
|
207
|
4907 #endif
|
|
0
|
4908 XSETINT (all_bit_vectors, 0); /* Qzero may not be set yet. */
|
|
|
4909 XSETINT (Vgc_message, 0);
|
|
|
4910 all_lcrecords = 0;
|
|
|
4911 ignore_malloc_warnings = 1;
|
|
255
|
4912 #ifdef DOUG_LEA_MALLOC
|
|
|
4913 mallopt (M_TRIM_THRESHOLD, 128*1024); /* trim threshold */
|
|
|
4914 mallopt (M_MMAP_THRESHOLD, 64*1024); /* mmap threshold */
|
|
261
|
4915 #if 0 /* Moved to emacs.c */
|
|
|
4916 mallopt (M_MMAP_MAX, 64); /* max. number of mmap'ed areas */
|
|
|
4917 #endif
|
|
255
|
4918 #endif
|
|
0
|
4919 init_string_alloc ();
|
|
|
4920 init_string_chars_alloc ();
|
|
|
4921 init_cons_alloc ();
|
|
|
4922 init_symbol_alloc ();
|
|
|
4923 init_compiled_function_alloc ();
|
|
|
4924 #ifdef LISP_FLOAT_TYPE
|
|
|
4925 init_float_alloc ();
|
|
|
4926 #endif /* LISP_FLOAT_TYPE */
|
|
|
4927 init_marker_alloc ();
|
|
|
4928 init_extent_alloc ();
|
|
|
4929 init_event_alloc ();
|
|
278
|
4930
|
|
0
|
4931 ignore_malloc_warnings = 0;
|
|
|
4932 staticidx = 0;
|
|
|
4933 consing_since_gc = 0;
|
|
|
4934 #if 1
|
|
|
4935 gc_cons_threshold = 500000; /* XEmacs change */
|
|
|
4936 #else
|
|
|
4937 gc_cons_threshold = 15000; /* debugging */
|
|
|
4938 #endif
|
|
|
4939 #ifdef VIRT_ADDR_VARIES
|
|
|
4940 malloc_sbrk_unused = 1<<22; /* A large number */
|
|
|
4941 malloc_sbrk_used = 100000; /* as reasonable as any number */
|
|
|
4942 #endif /* VIRT_ADDR_VARIES */
|
|
|
4943 lrecord_uid_counter = 259;
|
|
|
4944 debug_string_purity = 0;
|
|
|
4945 gcprolist = 0;
|
|
|
4946
|
|
|
4947 gc_currently_forbidden = 0;
|
|
|
4948 gc_hooks_inhibited = 0;
|
|
|
4949
|
|
|
4950 #ifdef ERROR_CHECK_TYPECHECK
|
|
|
4951 ERROR_ME.really_unlikely_name_to_have_accidentally_in_a_non_errb_structure =
|
|
|
4952 666;
|
|
|
4953 ERROR_ME_NOT.
|
|
|
4954 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = 42;
|
|
|
4955 ERROR_ME_WARN.
|
|
|
4956 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure =
|
|
|
4957 3333632;
|
|
183
|
4958 #endif /* ERROR_CHECK_TYPECHECK */
|
|
0
|
4959 }
|
|
|
4960
|
|
|
4961 void
|
|
|
4962 reinit_alloc (void)
|
|
|
4963 {
|
|
|
4964 gcprolist = 0;
|
|
|
4965 }
|
|
|
4966
|
|
|
4967 void
|
|
|
4968 syms_of_alloc (void)
|
|
|
4969 {
|
|
|
4970 defsymbol (&Qpre_gc_hook, "pre-gc-hook");
|
|
|
4971 defsymbol (&Qpost_gc_hook, "post-gc-hook");
|
|
|
4972 defsymbol (&Qgarbage_collecting, "garbage-collecting");
|
|
|
4973
|
|
20
|
4974 DEFSUBR (Fcons);
|
|
|
4975 DEFSUBR (Flist);
|
|
|
4976 DEFSUBR (Fvector);
|
|
|
4977 DEFSUBR (Fbit_vector);
|
|
|
4978 DEFSUBR (Fmake_byte_code);
|
|
|
4979 DEFSUBR (Fmake_list);
|
|
|
4980 DEFSUBR (Fmake_vector);
|
|
|
4981 DEFSUBR (Fmake_bit_vector);
|
|
|
4982 DEFSUBR (Fmake_string);
|
|
278
|
4983 DEFSUBR (Fstring);
|
|
20
|
4984 DEFSUBR (Fmake_symbol);
|
|
|
4985 DEFSUBR (Fmake_marker);
|
|
|
4986 DEFSUBR (Fpurecopy);
|
|
|
4987 DEFSUBR (Fgarbage_collect);
|
|
|
4988 DEFSUBR (Fmemory_limit);
|
|
|
4989 DEFSUBR (Fconsing_since_gc);
|
|
0
|
4990 }
|
|
|
4991
|
|
|
4992 void
|
|
|
4993 vars_of_alloc (void)
|
|
|
4994 {
|
|
|
4995 DEFVAR_INT ("gc-cons-threshold", &gc_cons_threshold /*
|
|
|
4996 *Number of bytes of consing between garbage collections.
|
|
|
4997 \"Consing\" is a misnomer in that this actually counts allocation
|
|
|
4998 of all different kinds of objects, not just conses.
|
|
|
4999 Garbage collection can happen automatically once this many bytes have been
|
|
|
5000 allocated since the last garbage collection. All data types count.
|
|
|
5001
|
|
|
5002 Garbage collection happens automatically when `eval' or `funcall' are
|
|
|
5003 called. (Note that `funcall' is called implicitly as part of evaluation.)
|
|
|
5004 By binding this temporarily to a large number, you can effectively
|
|
|
5005 prevent garbage collection during a part of the program.
|
|
|
5006
|
|
|
5007 See also `consing-since-gc'.
|
|
|
5008 */ );
|
|
|
5009
|
|
272
|
5010 DEFVAR_INT ("pure-bytes-used", &pure_bytes_used /*
|
|
0
|
5011 Number of bytes of sharable Lisp data allocated so far.
|
|
|
5012 */ );
|
|
|
5013
|
|
|
5014 #if 0
|
|
|
5015 DEFVAR_INT ("data-bytes-used", &malloc_sbrk_used /*
|
|
|
5016 Number of bytes of unshared memory allocated in this session.
|
|
|
5017 */ );
|
|
|
5018
|
|
|
5019 DEFVAR_INT ("data-bytes-free", &malloc_sbrk_unused /*
|
|
|
5020 Number of bytes of unshared memory remaining available in this session.
|
|
|
5021 */ );
|
|
|
5022 #endif
|
|
|
5023
|
|
|
5024 #ifdef DEBUG_XEMACS
|
|
|
5025 DEFVAR_INT ("debug-allocation", &debug_allocation /*
|
|
|
5026 If non-zero, print out information to stderr about all objects allocated.
|
|
|
5027 See also `debug-allocation-backtrace-length'.
|
|
|
5028 */ );
|
|
|
5029 debug_allocation = 0;
|
|
|
5030
|
|
|
5031 DEFVAR_INT ("debug-allocation-backtrace-length",
|
|
|
5032 &debug_allocation_backtrace_length /*
|
|
|
5033 Length (in stack frames) of short backtrace printed out by `debug-allocation'.
|
|
|
5034 */ );
|
|
|
5035 debug_allocation_backtrace_length = 2;
|
|
|
5036 #endif
|
|
|
5037
|
|
|
5038 DEFVAR_BOOL ("purify-flag", &purify_flag /*
|
|
|
5039 Non-nil means loading Lisp code in order to dump an executable.
|
|
|
5040 This means that certain objects should be allocated in shared (pure) space.
|
|
|
5041 */ );
|
|
|
5042
|
|
|
5043 DEFVAR_LISP ("pre-gc-hook", &Vpre_gc_hook /*
|
|
|
5044 Function or functions to be run just before each garbage collection.
|
|
|
5045 Interrupts, garbage collection, and errors are inhibited while this hook
|
|
|
5046 runs, so be extremely careful in what you add here. In particular, avoid
|
|
|
5047 consing, and do not interact with the user.
|
|
|
5048 */ );
|
|
|
5049 Vpre_gc_hook = Qnil;
|
|
|
5050
|
|
|
5051 DEFVAR_LISP ("post-gc-hook", &Vpost_gc_hook /*
|
|
|
5052 Function or functions to be run just after each garbage collection.
|
|
|
5053 Interrupts, garbage collection, and errors are inhibited while this hook
|
|
|
5054 runs, so be extremely careful in what you add here. In particular, avoid
|
|
|
5055 consing, and do not interact with the user.
|
|
|
5056 */ );
|
|
|
5057 Vpost_gc_hook = Qnil;
|
|
|
5058
|
|
|
5059 DEFVAR_LISP ("gc-message", &Vgc_message /*
|
|
|
5060 String to print to indicate that a garbage collection is in progress.
|
|
|
5061 This is printed in the echo area. If the selected frame is on a
|
|
|
5062 window system and `gc-pointer-glyph' specifies a value (i.e. a pointer
|
|
|
5063 image instance) in the domain of the selected frame, the mouse pointer
|
|
|
5064 will change instead of this message being printed.
|
|
|
5065 */ );
|
|
|
5066 Vgc_message = make_pure_string ((CONST Bufbyte *) gc_default_message,
|
|
|
5067 countof (gc_default_message) - 1,
|
|
|
5068 Qnil, 1);
|
|
|
5069
|
|
|
5070 DEFVAR_LISP ("gc-pointer-glyph", &Vgc_pointer_glyph /*
|
|
|
5071 Pointer glyph used to indicate that a garbage collection is in progress.
|
|
|
5072 If the selected window is on a window system and this glyph specifies a
|
|
|
5073 value (i.e. a pointer image instance) in the domain of the selected
|
|
|
5074 window, the pointer will be changed as specified during garbage collection.
|
|
|
5075 Otherwise, a message will be printed in the echo area, as controlled
|
|
|
5076 by `gc-message'.
|
|
|
5077 */ );
|
|
|
5078 }
|
|
|
5079
|
|
|
5080 void
|
|
|
5081 complex_vars_of_alloc (void)
|
|
|
5082 {
|
|
|
5083 Vgc_pointer_glyph = Fmake_glyph_internal (Qpointer);
|
|
|
5084 }
|
