annotate src/free-hook.c @ 165:5a88923fcbfe r20-3b9

Import from CVS: tag r20-3b9
author cvs
date Mon, 13 Aug 2007 09:44:42 +0200
parents 859a2309aef8
children 3d6bfa290dbd
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1 /* This file is part of XEmacs.
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2
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3 XEmacs is free software; you can redistribute it and/or modify it
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4 under the terms of the GNU General Public License as published by the
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5 Free Software Foundation; either version 2, or (at your option) any
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6 later version.
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7
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8 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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11 for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with XEmacs; see the file COPYING. If not, write to
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15 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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16 Boston, MA 02111-1307, USA. */
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17
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18 /* Synched up with: Not in FSF. */
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19
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20 /* Debugging hooks for malloc. */
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21
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22 /* These hooks work with gmalloc to catch allocation errors.
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23 In particular, the following is trapped:
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24
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25 * Freeing the same pointer twice.
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26 * Trying to free a pointer not returned by malloc.
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27 * Trying to realloc a pointer not returned by malloc.
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28
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29 In addition, every word of every block freed is set to
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30 0xdeadbeef. This causes many uses of freed storage to be
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31 trapped or recognized.
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32
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33 When you use this, the storage used by the last FREE_QUEUE_LIMIT
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34 calls to free() is not recycled. When you call free for the Nth
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35 time, the (N - FREE_QUEUE_LIMIT)'th block is actually recycled.
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36
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37 For these last FREE_QUEUE_LIMIT calls to free() a backtrace is
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38 saved showing where it was called from. The function
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39 find_backtrace() is provided here to be called from GDB with a
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40 pointer (such as would be passed to free()) as argument, e.g.
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41 (gdb) p/a *find_backtrace (0x234000). If SAVE_ARGS is defined,
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42 the first three arguments to each function are saved as well as the
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43 return addresses.
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44
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45 If UNMAPPED_FREE is defined, instead of setting every word of freed
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46 storage to 0xdeadbeef, every call to malloc goes on its own page(s).
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47 When free() is called, the block is read and write protected. This
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48 is very useful when debugging, since it usually generates a bus error
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49 when the deadbeef hack might only cause some garbage to be printed.
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50 However, this is too slow for everyday use, since it takes an enormous
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51 number of pages.
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52
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53
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54 Some other features that would be useful are:
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55
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56 * Checking for storage leaks.
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57 This could be done by a GC-like facility that would scan the data
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58 segment looking for pointers to allocated storage and tell you
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59 about those that are no longer referenced. This could be invoked
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60 at any time. Another possibility is to report on what allocated
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61 storage is still in use when the process is exited. Typically
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62 there will be a large amount, so this might not be very useful.
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63 */
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64
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65 #if defined (EMACS_BTL) && defined (sun4) && !defined (__lucid)
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66 /* currently only works in this configuration */
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67 # define SAVE_STACK
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68 #endif
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69
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70 #ifdef emacs
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71 #ifdef SAVE_STACK
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72 #include "cadillac-btl.h"
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73 #endif
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74 #include <config.h>
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75 #include "lisp.h"
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76 #else
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77 void *malloc (unsigned long);
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78 #endif
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79
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80 #include <stdio.h>
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81
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82 #include "hash.h"
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83
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84 #ifdef UNMAPPED_FREE
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85 #include <sys/mman.h>
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86 #include <sys/param.h>
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87 #define ROUND_UP_TO_PAGE(i) (((i) + PAGEOFFSET) & PAGEMASK)
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88 #endif
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89
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90 #include <sys/types.h>
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91
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92 /* System function prototypes don't belong in C source files */
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93 /* extern void free (void *); */
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94
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95 c_hashtable pointer_table;
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96
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97 extern void (*__free_hook) (void *);
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98 extern void *(*__malloc_hook) (unsigned long);
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99
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100 static void *check_malloc (unsigned long);
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101
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102 typedef void (*fun_ptr) ();
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103
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104 #ifdef SAVE_STACK
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105 #define FREE_QUEUE_LIMIT 1000
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106 #else
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107 /* free_queue is not too useful without backtrace logging */
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108 #define FREE_QUEUE_LIMIT 1
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109 #endif
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110 #define TRACE_LIMIT 20
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111
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112 typedef struct {
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113 fun_ptr return_pc;
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114 #ifdef SAVE_ARGS
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115 void *arg[3];
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116 #endif
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117 } fun_entry;
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118
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119 typedef struct {
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120 void *address;
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121 unsigned long length;
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122 #ifdef SAVE_STACK
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123 fun_entry backtrace[TRACE_LIMIT];
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124 #endif
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125 } free_queue_entry;
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126
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127 free_queue_entry free_queue[FREE_QUEUE_LIMIT];
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128
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129 int current_free;
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130
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131 #ifdef SAVE_STACK
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132 static void
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133 init_frame (FRAME *fptr)
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134 {
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135 FRAME tmp_frame;
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136
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137 #ifdef sparc
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138 /* Do the system trap ST_FLUSH_WINDOWS */
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139 asm ("ta 3");
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140 asm ("st %sp, [%i0+0]");
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141 asm ("st %fp, [%i0+4]");
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142 #endif
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143
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144 fptr->pc = (char *) init_frame;
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145 tmp_frame = *fptr;
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146
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147 PREVIOUS_FRAME (tmp_frame);
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148
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149 *fptr = tmp_frame;
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150 return;
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151 }
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152
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153 #ifdef SAVE_ARGS
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154 static void *
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155 frame_arg (FRAME *fptr, int index)
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156 {
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157 return ((void *) FRAME_ARG(*fptr, index));
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158 }
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159 #endif
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160
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161 static void
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162 save_backtrace (FRAME *current_frame_ptr, fun_entry *table)
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163 {
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164 int i = 0;
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165 #ifdef SAVE_ARGS
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166 int j;
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167 #endif
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168 FRAME current_frame = *current_frame_ptr;
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169
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170 /* Get up and out of free() */
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171 PREVIOUS_FRAME (current_frame);
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172
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173 /* now do the basic loop adding data until there is no more */
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174 while (PREVIOUS_FRAME (current_frame) && i < TRACE_LIMIT)
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175 {
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176 table[i].return_pc = (void (*)())FRAME_PC (current_frame);
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177 #ifdef SAVE_ARGS
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178 for (j = 0; j < 3; j++)
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179 table[i].arg[j] = frame_arg (&current_frame, j);
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180 #endif
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181 i++;
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182 }
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183 memset (&table[i], 0, sizeof (fun_entry) * (TRACE_LIMIT - i));
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184 }
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185
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186 free_queue_entry *
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187 find_backtrace (void *ptr)
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188 {
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189 int i;
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190
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191 for (i = 0; i < FREE_QUEUE_LIMIT; i++)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
192 if (free_queue[i].address == ptr)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
193 return &free_queue[i];
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
194
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
195 return 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
196 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
197 #endif /* SAVE_STACK */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
198
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
199 int strict_free_check;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
200
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
201 static void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
202 check_free (void *ptr)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
203 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
204 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
205 FRAME start_frame;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
206
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
207 init_frame (&start_frame);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
208 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
209
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
210 __free_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
211 __malloc_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
212 if (!pointer_table)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
213 pointer_table = make_hashtable (max (100, FREE_QUEUE_LIMIT * 2));
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
214 if (ptr != 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
215 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
216 long size;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
217 #ifdef UNMAPPED_FREE
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
218 unsigned long rounded_up_size;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
219 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
220
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
221 EMACS_INT present = (EMACS_INT) gethash (ptr, pointer_table, (void *) &size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
222
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
223 if (!present)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
224 /* This can only happen if you try to free something that didn't
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
225 come from malloc */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
226 if (strict_free_check)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
227 abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
228 else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
229 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
230 __free_hook = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
231 __malloc_hook = check_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
232 goto end;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
233 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
234
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
235 if (size < 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
236 /* This happens when you free twice */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
237 if (strict_free_check)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
238 abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
239 else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
240 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
241 __free_hook = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
242 __malloc_hook = check_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
243 goto end;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
244 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
245 puthash (ptr, (void *)-size, pointer_table);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
246 #ifdef UNMAPPED_FREE
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
247 /* Round up size to an even number of pages. */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
248 rounded_up_size = ROUND_UP_TO_PAGE (size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
249 /* Protect the pages freed from all access */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
250 if (strict_free_check)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
251 mprotect (ptr, rounded_up_size, PROT_NONE);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
252 #else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
253 /* Set every word in the block to 0xdeadbeef */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
254 if (strict_free_check)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
255 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
256 unsigned long long_length = (size + (sizeof (long) - 1))
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
257 / sizeof (long);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
258 unsigned long i;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
259
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
260 for (i = 0; i < long_length; i++)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
261 ((unsigned long *) ptr)[i] = 0xdeadbeef;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
262 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
263 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
264 free_queue[current_free].address = ptr;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
265 free_queue[current_free].length = size;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
266 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
267 save_backtrace (&start_frame,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
268 free_queue[current_free].backtrace);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
269 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
270 current_free++;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
271 if (current_free >= FREE_QUEUE_LIMIT)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
272 current_free = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
273 /* Really free this if there's something there */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
274 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
275 void *old = free_queue[current_free].address;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
276
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
277 if (old)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
278 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
279 #ifdef UNMAPPED_FREE
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
280 unsigned long old_len = free_queue[current_free].length;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
281
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
282 mprotect (old, old_len, PROT_READ | PROT_WRITE | PROT_EXEC);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
283 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
284 free (old);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
285 remhash (old, pointer_table);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
286 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
287 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
288 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
289 __free_hook = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
290 __malloc_hook = check_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
291
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
292 end:
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
293 return;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
294 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
295
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
296 static void *
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
297 check_malloc (unsigned long size)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
298 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
299 unsigned long rounded_up_size;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
300 void *result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
301
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
302 __free_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
303 __malloc_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
304 if (size == 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
305 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
306 result = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
307 goto end;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
308 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
309 #ifdef UNMAPPED_FREE
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
310 /* Round up to an even number of pages. */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
311 rounded_up_size = ROUND_UP_TO_PAGE (size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
312 #else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
313 rounded_up_size = size;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
314 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
315 result = malloc (rounded_up_size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
316 if (!pointer_table)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
317 pointer_table = make_hashtable (FREE_QUEUE_LIMIT * 2);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
318 puthash (result, (void *)size, pointer_table);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
319 __free_hook = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
320 __malloc_hook = check_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
321 end:
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
322 return result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
323 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
324
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
325 extern void *(*__realloc_hook) (void *, unsigned long);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
326
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
327 #ifdef MIN
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
328 #undef MIN
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
329 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
330 #define MIN(A, B) ((A) < (B) ? (A) : (B))
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
331
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
332 /* Don't optimize realloc */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
333
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
334 static void *
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
335 check_realloc (void * ptr, unsigned long size)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
336 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
337 EMACS_INT present;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
338 unsigned long old_size;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
339 void *result = malloc (size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
340
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
341 present = (EMACS_INT) gethash (ptr, pointer_table, (void *) &old_size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
342 if (!present)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
343 /* This can only happen by reallocing a pointer that didn't
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
344 come from malloc. */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
345 abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
346 if (result == 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
347 goto end;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
348 memcpy (result, ptr, MIN (size, old_size));
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
349 free (ptr);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
350 end:
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
351 return result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
352 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
353
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
354 void enable_strict_free_check (void);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
355 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
356 enable_strict_free_check (void)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
357 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
358 strict_free_check = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
359 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
360
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
361 void disable_strict_free_check (void);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
362 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
363 disable_strict_free_check (void)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
364 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
365 strict_free_check = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
366 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
367
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
368 /* Note: All BLOCK_INPUT stuff removed from this file because it's
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
369 completely gone in XEmacs */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
370
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
371 static void *
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
372 block_input_malloc (unsigned long size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
373
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
374 static void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
375 block_input_free (void* ptr)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
376 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
377 __free_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
378 __malloc_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
379 free (ptr);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
380 __free_hook = block_input_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
381 __malloc_hook = block_input_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
382 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
383
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
384 static void *
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
385 block_input_malloc (unsigned long size)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
386 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
387 void* result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
388 __free_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
389 __malloc_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
390 result = malloc (size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
391 __free_hook = block_input_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
392 __malloc_hook = block_input_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
393 return result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
394 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
395
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
396
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
397 static void *
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
398 block_input_realloc (void* ptr, unsigned long size)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
399 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
400 void* result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
401 __free_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
402 __malloc_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
403 __realloc_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
404 result = realloc (ptr, size);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
405 __free_hook = block_input_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
406 __malloc_hook = block_input_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
407 __realloc_hook = block_input_realloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
408 return result;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
409 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
410
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
411 #ifdef emacs
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
412
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
413 void disable_free_hook (void);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
414 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
415 disable_free_hook (void)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
416 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
417 __free_hook = block_input_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
418 __malloc_hook = block_input_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
419 __realloc_hook = block_input_realloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
420 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
421
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
422 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
423 init_free_hook (void)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
424 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
425 __free_hook = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
426 __malloc_hook = check_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
427 __realloc_hook = check_realloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
428 current_free = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
429 strict_free_check = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
430 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
431
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
432 void really_free_one_entry (void *, int, int *);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
433
20
859a2309aef8 Import from CVS: tag r19-15b93
cvs
parents: 0
diff changeset
434 DEFUN ("really-free", Freally_free, 0, 1, "P", /*
0
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
435 Actually free the storage held by the free() debug hook.
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
436 A no-op if the free hook is disabled.
20
859a2309aef8 Import from CVS: tag r19-15b93
cvs
parents: 0
diff changeset
437 */
859a2309aef8 Import from CVS: tag r19-15b93
cvs
parents: 0
diff changeset
438 (arg))
0
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
439 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
440 int count[2];
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
441 Lisp_Object lisp_count[2];
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
442
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
443 if ((__free_hook != 0) && pointer_table)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
444 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
445 count[0] = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
446 count[1] = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
447 __free_hook = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
448 maphash ((maphash_function)really_free_one_entry,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
449 pointer_table, (void *)&count);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
450 memset (free_queue, 0, sizeof (free_queue_entry) * FREE_QUEUE_LIMIT);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
451 current_free = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
452 __free_hook = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
453 XSETINT (lisp_count[0], count[0]);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
454 XSETINT (lisp_count[1], count[1]);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
455 return Fcons (lisp_count[0], lisp_count[1]);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
456 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
457 else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
458 return Fcons (make_int (0), make_int (0));
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
459 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
460
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
461 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
462 really_free_one_entry (void *key, int contents, int *countp)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
463 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
464 if (contents < 0)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
465 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
466 free (key);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
467 #ifdef UNMAPPED_FREE
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
468 mprotect (key, -contents, PROT_READ | PROT_WRITE | PROT_EXEC);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
469 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
470 remhash (key, pointer_table);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
471 countp[0]++;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
472 countp[1] += -contents;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
473 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
474 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
475
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
476 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
477 syms_of_free_hook (void)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
478 {
20
859a2309aef8 Import from CVS: tag r19-15b93
cvs
parents: 0
diff changeset
479 DEFSUBR (Freally_free);
0
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
480 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
481
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
482 #else
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
483 void (*__free_hook)() = check_free;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
484 void *(*__malloc_hook)() = check_malloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
485 void *(*__realloc_hook)() = check_realloc;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
486 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
487
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
488
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
489 #if defined(DEBUG_INPUT_BLOCKING) || defined (DEBUG_GCPRO)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
490
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
491 /* Note: There is no more input blocking in XEmacs */
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
492 typedef enum {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
493 block_type, unblock_type, totally_type,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
494 gcpro1_type, gcpro2_type, gcpro3_type, gcpro4_type, ungcpro_type
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
495 } blocktype;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
496
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
497 struct block_input_history_struct {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
498 char *file;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
499 int line;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
500 blocktype type;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
501 int value;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
502 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
503 fun_entry backtrace[TRACE_LIMIT];
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
504 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
505 };
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
506
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
507 typedef struct block_input_history_struct block_input_history;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
508
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
509 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
510
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
511 #ifdef DEBUG_INPUT_BLOCKING
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
512
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
513 int blhistptr;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
514
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
515 #define BLHISTLIMIT 1000
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
516
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
517 block_input_history blhist[BLHISTLIMIT];
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
518
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
519 note_block_input (char *file, int line)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
520 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
521 note_block (file, line, block_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
522 if (interrupt_input_blocked > 2) abort();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
523 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
524
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
525 note_unblock_input (char* file, int line)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
526 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
527 note_block (file, line, unblock_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
528 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
529
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
530 note_totally_unblocked (char* file, int line)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
531 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
532 note_block (file, line, totally_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
533 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
534
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
535 note_block (char *file, int line, blocktype type)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
536 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
537 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
538 FRAME start_frame;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
539
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
540 init_frame (&start_frame);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
541 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
542
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
543 blhist[blhistptr].file = file;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
544 blhist[blhistptr].line = line;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
545 blhist[blhistptr].type = type;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
546 blhist[blhistptr].value = interrupt_input_blocked;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
547
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
548 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
549 save_backtrace (&start_frame,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
550 blhist[blhistptr].backtrace);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
551 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
552
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
553 blhistptr++;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
554 if (blhistptr >= BLHISTLIMIT)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
555 blhistptr = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
556 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
557
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
558 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
559
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
560
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
561 #ifdef DEBUG_GCPRO
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
562
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
563 int gcprohistptr;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
564 #define GCPROHISTLIMIT 1000
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
565 block_input_history gcprohist[GCPROHISTLIMIT];
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
566
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
567 static void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
568 log_gcpro (char *file, int line, struct gcpro *value, blocktype type)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
569 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
570 FRAME start_frame;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
571
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
572 if (type == ungcpro_type)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
573 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
574 if (value == gcprolist) goto OK;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
575 if (! gcprolist) abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
576 if (value == gcprolist->next) goto OK;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
577 if (! gcprolist->next) abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
578 if (value == gcprolist->next->next) goto OK;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
579 if (! gcprolist->next->next) abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
580 if (value == gcprolist->next->next->next) goto OK;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
581 abort ();
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
582 OK:;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
583 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
584 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
585 init_frame (&start_frame);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
586 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
587 gcprohist[gcprohistptr].file = file;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
588 gcprohist[gcprohistptr].line = line;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
589 gcprohist[gcprohistptr].type = type;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
590 gcprohist[gcprohistptr].value = (int) value;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
591 #ifdef SAVE_STACK
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
592 save_backtrace (&start_frame, gcprohist[gcprohistptr].backtrace);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
593 #endif
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
594 gcprohistptr++;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
595 if (gcprohistptr >= GCPROHISTLIMIT)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
596 gcprohistptr = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
597 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
598
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
599 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
600 debug_gcpro1 (char *file, int line, struct gcpro *gcpro1, Lisp_Object *var)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
601 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
602 gcpro1->next = gcprolist; gcpro1->var = var; gcpro1->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
603 gcprolist = gcpro1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
604 log_gcpro (file, line, gcpro1, gcpro1_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
605 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
606
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
607 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
608 debug_gcpro2 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
609 Lisp_Object *var1, Lisp_Object *var2)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
610 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
611 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
612 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
613 gcprolist = gcpro2;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
614 log_gcpro (file, line, gcpro2, gcpro2_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
615 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
616
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
617 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
618 debug_gcpro3 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
619 struct gcpro *gcpro3, Lisp_Object *var1, Lisp_Object *var2,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
620 Lisp_Object *var3)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
621 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
622 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
623 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
624 gcpro3->next = gcpro2; gcpro3->var = var3; gcpro3->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
625 gcprolist = gcpro3;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
626 log_gcpro (file, line, gcpro3, gcpro3_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
627 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
628
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
629 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
630 debug_gcpro4 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
631 struct gcpro *gcpro3, struct gcpro *gcpro4, Lisp_Object *var1,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
632 Lisp_Object *var2, Lisp_Object *var3, Lisp_Object *var4)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
633 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
634 log_gcpro (file, line, gcpro4, gcpro4_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
635 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
636 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
637 gcpro3->next = gcpro2; gcpro3->var = var3; gcpro3->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
638 gcpro4->next = gcpro3; gcpro4->var = var4; gcpro4->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
639 gcprolist = gcpro4;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
640 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
641
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
642 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
643 debug_gcpro5 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
644 struct gcpro *gcpro3, struct gcpro *gcpro4, struct gcpro *gcpro5,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
645 Lisp_Object *var1, Lisp_Object *var2, Lisp_Object *var3,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
646 Lisp_Object *var4, Lisp_Object *var5)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
647 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
648 log_gcpro (file, line, gcpro5, gcpro5_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
649 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
650 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
651 gcpro3->next = gcpro2; gcpro3->var = var3; gcpro3->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
652 gcpro4->next = gcpro3; gcpro4->var = var4; gcpro4->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
653 gcpro5->next = gcpro4; gcpro5->var = var5; gcpro5->nvars = 1;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
654 gcprolist = gcpro5;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
655 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
656
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
657 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
658 debug_ungcpro (char *file, int line, struct gcpro *gcpro1)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
659 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
660 log_gcpro (file, line, gcpro1, ungcpro_type);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
661 gcprolist = gcpro1->next;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
662 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
663
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
664 void
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
665 show_gcprohist (void)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
666 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
667 int i, j;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
668 for (i = 0, j = gcprohistptr;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
669 i < GCPROHISTLIMIT;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
670 i++, j++)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
671 {
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
672 if (j >= GCPROHISTLIMIT)
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
673 j = 0;
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
674 printf ("%3d %s %d %s 0x%x\n",
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
675 j, gcprohist[j].file, gcprohist[j].line,
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
676 (gcprohist[j].type == gcpro1_type ? "GCPRO1" :
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
677 gcprohist[j].type == gcpro2_type ? "GCPRO2" :
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
678 gcprohist[j].type == gcpro3_type ? "GCPRO3" :
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
679 gcprohist[j].type == gcpro4_type ? "GCPRO4" :
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
680 gcprohist[j].type == ungcpro_type ? "UNGCPRO" : "???"),
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
681 gcprohist[j].value);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
682 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
683 fflush (stdout);
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
684 }
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
685
376386a54a3c Import from CVS: tag r19-14
cvs
parents:
diff changeset
686 #endif