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428
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1 /* Why the hell is XEmacs so fucking slow?
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1292
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2 Copyright (C) 1996, 2002, 2003 Ben Wing.
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428
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3 Copyright (C) 1998 Free Software Foundation, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 #include <config.h>
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23 #include "lisp.h"
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24
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25 #include "backtrace.h"
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26 #include "bytecode.h"
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27 #include "elhash.h"
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28 #include "hash.h"
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1315
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29 #include "profile.h"
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428
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30
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31 #include "syssignal.h"
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32 #include "systime.h"
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33
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611
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34 #ifndef HAVE_SETITIMER
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35 #error Sorry charlie. We need a scalpel and all we have is a lawnmower.
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36 #endif
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37
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1292
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38 #ifdef WIN32_ANY
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39 int mswindows_is_blocking;
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40 #endif
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41
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2367
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42 /* Written by Ben Wing. */
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428
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43
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2367
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44 /*
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428
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45
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2367
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46 Documented in
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428
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47
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2367
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48 (Info-goto-node "(internals)Profiling")
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49 */
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50
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51 /* We use a plain table here because we're recording inside of a signal
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52 handler. */
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428
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53 static struct hash_table *big_profile_table;
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54 Lisp_Object Vtotal_timing_profile_table;
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55 Lisp_Object Vcall_count_profile_table;
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56 Lisp_Object Vtotal_gc_usage_profile_table;
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57 Lisp_Object Vgc_usage_profile_table;
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58
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59 extern int lisp_eval_depth;
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60
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61 extern EMACS_UINT total_consing;
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62 static volatile EMACS_UINT total_ticks;
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63
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458
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64 Fixnum default_profiling_interval;
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65
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66 int profiling_active;
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67
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68 static Lisp_Object QSprocessing_events_at_top_level;
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69 static Lisp_Object QSunknown, QSprofile_overhead;
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70
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71 static Lisp_Object Qtiming, Qtotal_timing, Qcall_count;
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72 static Lisp_Object Qgc_usage, Qtotal_gc_usage;
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73
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74 /* This needs to be >= the total number of defined internal sections,
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75 plus 1 or 2?? Set it extra big just to be ultra-paranoid. */
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76 #define EXTRA_BREATHING_ROOM 100
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77
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1292
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78 /* We use profiling_lock to prevent the signal handler from writing to
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79 the table while another routine is operating on it. We also set
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80 profiling_lock in case the timeout between signal calls is short
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81 enough to catch us while we're already in there. */
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82 static volatile int profiling_lock;
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428
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83
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1292
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84 /* Whether we're in the process of doing *any* profiling-related stuff.
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85 Used to indicate amount of time spent profiling. */
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86 static int in_profiling;
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87
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88 #if 0 /* #### for KKCC, eventually */
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89
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90 static const struct memory_description hentry_description_1[] = {
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91 { XD_LISP_OBJECT, offsetof (hentry, key) },
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92 { XD_END }
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93 };
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94
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95 static const struct sized_memory_description hentry_description = {
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96 sizeof (hentry),
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97 hentry_description_1
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98 };
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99
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100 static const struct memory_description plain_hash_table_description_1[] = {
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101 { XD_ELEMCOUNT, offsetof (struct hash_table, size) },
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102 { XD_BLOCK_PTR, offsetof (struct hash_table, harray), XD_INDIRECT (0, 0),
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103 &hentry_description },
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104 { XD_END }
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105 };
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106
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107 static const struct sized_memory_description plain_hash_table_description = {
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108 sizeof (struct hash_table),
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109 plain_hash_table_description_1
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110 };
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111
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112 #endif /* 0 */
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1123
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113
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114 static void
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115 create_timing_profile_table (void)
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116 {
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117 /* The hash code can safely be called from a signal handler except when
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118 it has to grow the hash table. In this case, it calls realloc(),
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119 which is not (in general) re-entrant. The way we deal with this is
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120 documented at the top of this file. */
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1123
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121 if (!big_profile_table)
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122 big_profile_table = make_hash_table (2000);
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123 }
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124
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125 static void
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126 create_profile_tables (void)
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127 {
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128 create_timing_profile_table ();
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129 if (NILP (Vtotal_timing_profile_table))
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130 Vtotal_timing_profile_table =
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131 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
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132 if (NILP (Vcall_count_profile_table))
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133 Vcall_count_profile_table =
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134 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
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135 if (NILP (Vgc_usage_profile_table))
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136 Vgc_usage_profile_table =
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137 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
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138 if (NILP (Vtotal_gc_usage_profile_table))
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139 Vtotal_gc_usage_profile_table =
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140 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
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141 }
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142
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143 static Lisp_Object
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144 current_profile_function (void)
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145 {
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146 Lisp_Object fun;
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147 struct backtrace *bt = backtrace_list;
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148
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149 /* 2 because we set in_profiling when we entered the current routine. */
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150 if (in_profiling >= 2)
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151 return QSprofile_overhead;
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152
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153 /* Find a function actually being called. Potentially (?) there could be
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154 a number of non-calling funs -- calling foo autoloads, which tries to
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155 call bar, but requires evalling its args first, which calls baz, ...
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156 If profiling was not enabled when the function was called, just treat
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157 the function as actually called, because the info about whether we've
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158 finished the preamble will not have been recorded. */
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159 for (; bt && !bt->function_being_called; bt = bt->next)
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160 ;
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161
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162 if (bt)
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163 {
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164 fun = *bt->function;
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165
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166 if (!SYMBOLP (fun)
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167 && !COMPILED_FUNCTIONP (fun)
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168 && !SUBRP (fun)
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169 && !CONSP (fun)
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170 && !STRINGP (fun))
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171 fun = QSunknown;
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172 }
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173 else
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174 fun = QSprocessing_events_at_top_level;
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175 return fun;
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176 }
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177
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178 void
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179 profile_record_consing (EMACS_INT size)
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180 {
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181 in_profiling++;
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182 inchash_eq (current_profile_function (), Vgc_usage_profile_table, size);
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183 in_profiling--;
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184 }
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185
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186 void
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187 profile_record_unconsing (EMACS_INT size)
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188 {
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189 /* If we don't want to record values less than 0, change this; but then
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190 the totals won't be accurate. */
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191 profile_record_consing (-size);
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1123
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192 }
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193
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194 inline static void
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195 profile_sow_backtrace (struct backtrace *bt)
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196 {
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197 bt->current_total_timing_val =
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198 XINT (Fgethash (*bt->function, Vtotal_timing_profile_table, Qzero));
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199 bt->current_total_gc_usage_val =
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200 XINT (Fgethash (*bt->function, Vtotal_gc_usage_profile_table, Qzero));
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201 bt->function_being_called = 1;
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202 /* Need to think carefully about the exact order of operations here
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203 so that we don't end up with totals being less than function-only
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204 values; */
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205 bt->total_consing_at_start = total_consing;
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206 /* Order of operation is tricky here because we want the total function
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207 time to be as close as possible to (and absolutely not less than) the
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208 function-only time. From the sigprof-handler's perspective, the
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209 function is "entered" the moment we finish executing the
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210 in_profiling-- statement below, and ends the moment we finish
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211 executing the in_profiling++ statement in
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212 profile_record_just_called(). By recording the tick value as close as
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213 possible to the "in-function" window but not in it, we satisfy the
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214 conditions just mentioned. */
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215 bt->total_ticks_at_start = total_ticks;
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216 }
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428
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217
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218 void
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219 profile_record_about_to_call (struct backtrace *bt)
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220 {
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221 in_profiling++;
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222 profiling_lock = 1;
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223 /* See comments in create_timing_profile_table(). */
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224 pregrow_hash_table_if_necessary (big_profile_table, EXTRA_BREATHING_ROOM);
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225 profiling_lock = 0;
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226 inchash_eq (*bt->function, Vcall_count_profile_table, 1);
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227 /* This may be set if the function was in its preamble at the time that
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228 `start-profiling' was called. If so, we shouldn't reset the values
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229 because we may get inconsistent results, since we have already started
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230 recording ticks and consing for the function. */
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231 if (!bt->function_being_called)
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232 profile_sow_backtrace (bt);
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233 in_profiling--;
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234 }
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428
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235
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236 inline static void
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237 profile_reap_backtrace (struct backtrace *bt)
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238 {
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239 EMACS_UINT ticks;
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240 /* The following statement *MUST* come directly after the preceding one!
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241 See the comment above. */
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242 ticks = total_ticks;
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243 /* We need to reset the "in-function" flag here. Otherwise the sigprof
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244 handler will record more ticks for the function while the post-amble
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245 is executing, and its value will be > our total value. */
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246 bt->function_being_called = 0;
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247 Fputhash (*bt->function,
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248 /* This works even when the total_ticks value has overwrapped.
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249 Same for total_consing below. */
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250 make_int ((EMACS_INT) (ticks - bt->total_ticks_at_start)
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251 + bt->current_total_timing_val),
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252 Vtotal_timing_profile_table);
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253 Fputhash (*bt->function,
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254 make_int ((EMACS_INT)
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255 (total_consing - bt->total_consing_at_start)
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256 + bt->current_total_gc_usage_val),
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257 Vtotal_gc_usage_profile_table);
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258 }
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259
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260 void
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261 profile_record_just_called (struct backtrace *bt)
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262 {
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263 in_profiling++;
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264 profile_reap_backtrace (bt);
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265 in_profiling--;
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266 }
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267
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268 /* Called when unwinding the catch stack after a throw or signal, to
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269 note that we are exiting the function. */
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270 void
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271 profile_record_unwind (struct backtrace *bt)
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272 {
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273 /* We may have thrown while still in a function's preamble. */
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274 if (bt->function_being_called)
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275 profile_record_just_called (bt);
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428
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276 }
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277
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278 static SIGTYPE
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2286
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279 sigprof_handler (int UNUSED (signo))
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428
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280 {
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1292
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281 #ifdef WIN32_ANY
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282 /* Windows unfortunately does not have any such thing as setitimer
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283 (ITIMER_PROF, ...), which runs in process time. Everything is real
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284 time. So to get slightly more reasonable results, ignore completely
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285 the times when we're blocking. Same applies, of course, to Cygwin. */
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286 if (mswindows_is_blocking)
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287 return;
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288 #endif
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289
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290 in_profiling++;
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291 total_ticks++;
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292
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428
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293 /* Don't do anything if we are shutting down, or are doing a maphash
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294 or clrhash on the table. */
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1292
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295 if (!profiling_lock && !preparing_for_armageddon)
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428
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296 {
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1292
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297 Lisp_Object fun = current_profile_function ();
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428
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298
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299 /* If something below causes an error to be signaled, we'll
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300 not correctly reset this flag. But we'll be in worse shape
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301 than that anyways, since we'll longjmp back to the last
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302 condition case. */
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1292
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303 profiling_lock = 1;
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428
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304
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305 {
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306 long count;
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442
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307 const void *vval;
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428
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308
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309 if (gethash (LISP_TO_VOID (fun), big_profile_table, &vval))
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310 count = (long) vval;
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311 else
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312 count = 0;
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313 count++;
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442
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314 vval = (const void *) count;
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428
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315 puthash (LISP_TO_VOID (fun), (void *) vval, big_profile_table);
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316 }
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317
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1292
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318 profiling_lock = 0;
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428
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319 }
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1292
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320 in_profiling--;
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428
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321 }
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322
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1292
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323 DEFUN ("start-profiling", Fstart_profiling, 0, 1, "", /*
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428
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324 Start profiling, with profile queries every MICROSECS.
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325 If MICROSECS is nil or omitted, the value of `default-profiling-interval'
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326 is used.
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327
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1123
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328 Information on function timings and call counts is currently recorded.
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1292
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329 You can retrieve the recorded profiling info using `get-profiling-info',
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330 or the higher-level function `profile-results'.
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428
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331
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332 Starting and stopping profiling does not clear the currently recorded
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333 info. Thus you can start and stop as many times as you want and everything
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1292
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334 will be properly accumulated. (To clear, use `clear-profiling-info'.)
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428
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335 */
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336 (microsecs))
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337 {
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338 /* This function can GC */
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339 int msecs;
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340 struct itimerval foo;
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1292
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341 int depth;
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428
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342
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1292
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343 if (profiling_active)
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344 return Qnil;
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345 depth = internal_bind_int (&in_profiling, 1 + in_profiling);
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346
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347 create_profile_tables ();
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348 /* See comments at top of file and in create_timing_profile_table().
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349 We ensure enough breathing room for all entries currently on the
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350 stack. */
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351 pregrow_hash_table_if_necessary (big_profile_table,
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352 EXTRA_BREATHING_ROOM + lisp_eval_depth);
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428
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353
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354 if (NILP (microsecs))
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355 msecs = default_profiling_interval;
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356 else
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357 {
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358 CHECK_NATNUM (microsecs);
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359 msecs = XINT (microsecs);
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360 }
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361 if (msecs <= 0)
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362 msecs = 1000;
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363
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613
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364 set_timeout_signal (SIGPROF, sigprof_handler);
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1292
|
365 {
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366 struct backtrace *bt = backtrace_list;
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367
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368 /* When we begin profiling, pretend like we just entered all the
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369 functions currently on the stack. When we stop profiling, do the
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370 opposite. This ensures consistent values being recorded for both
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371 function-only and total in such cases. */
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|
372 for (; bt; bt = bt->next)
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373 profile_sow_backtrace (bt);
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374 }
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|
|
375 profiling_active = 1;
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|
376 profiling_lock = 0;
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428
|
377 foo.it_value.tv_sec = 0;
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|
|
378 foo.it_value.tv_usec = msecs;
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|
|
379 EMACS_NORMALIZE_TIME (foo.it_value);
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|
|
380 foo.it_interval = foo.it_value;
|
|
611
|
381 qxe_setitimer (ITIMER_PROF, &foo, 0);
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|
1292
|
382 unbind_to (depth);
|
|
428
|
383 return Qnil;
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|
|
384 }
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|
|
385
|
|
1292
|
386 DEFUN ("stop-profiling", Fstop_profiling, 0, 0, "", /*
|
|
428
|
387 Stop profiling.
|
|
|
388 */
|
|
|
389 ())
|
|
|
390 {
|
|
|
391 /* This function does not GC */
|
|
|
392 struct itimerval foo;
|
|
|
393
|
|
1292
|
394 if (!profiling_active)
|
|
|
395 return Qnil;
|
|
|
396 in_profiling++;
|
|
428
|
397 foo.it_value.tv_sec = 0;
|
|
|
398 foo.it_value.tv_usec = 0;
|
|
|
399 foo.it_interval = foo.it_value;
|
|
611
|
400 qxe_setitimer (ITIMER_PROF, &foo, 0);
|
|
428
|
401 profiling_active = 0;
|
|
1292
|
402 {
|
|
|
403 struct backtrace *bt = backtrace_list;
|
|
|
404
|
|
|
405 for (; bt; bt = bt->next)
|
|
|
406 profile_reap_backtrace (bt);
|
|
|
407 }
|
|
613
|
408 set_timeout_signal (SIGPROF, fatal_error_signal);
|
|
1292
|
409 in_profiling--;
|
|
428
|
410 return Qnil;
|
|
|
411 }
|
|
|
412
|
|
1123
|
413 DEFUN ("clear-profiling-info", Fclear_profiling_info, 0, 0, "", /*
|
|
|
414 Clear out the recorded profiling info.
|
|
|
415 This clears both the internal timing information and the call counts in
|
|
|
416 `call-count-profile-table'.
|
|
|
417 */
|
|
|
418 ())
|
|
|
419 {
|
|
1292
|
420 in_profiling++;
|
|
1123
|
421 /* This function does not GC */
|
|
|
422 if (big_profile_table)
|
|
|
423 {
|
|
1292
|
424 profiling_lock = 1;
|
|
1123
|
425 clrhash (big_profile_table);
|
|
1292
|
426 profiling_lock = 0;
|
|
1123
|
427 }
|
|
1292
|
428 if (!NILP (Vtotal_timing_profile_table))
|
|
|
429 Fclrhash (Vtotal_timing_profile_table);
|
|
1123
|
430 if (!NILP (Vcall_count_profile_table))
|
|
|
431 Fclrhash (Vcall_count_profile_table);
|
|
1292
|
432 if (!NILP (Vgc_usage_profile_table))
|
|
|
433 Fclrhash (Vgc_usage_profile_table);
|
|
|
434 if (!NILP (Vtotal_gc_usage_profile_table))
|
|
|
435 Fclrhash (Vtotal_gc_usage_profile_table);
|
|
|
436 in_profiling--;
|
|
|
437
|
|
1123
|
438 return Qnil;
|
|
|
439 }
|
|
|
440
|
|
428
|
441 struct get_profiling_info_closure
|
|
|
442 {
|
|
1123
|
443 Lisp_Object timing;
|
|
428
|
444 };
|
|
|
445
|
|
|
446 static int
|
|
1123
|
447 get_profiling_info_timing_maphash (const void *void_key,
|
|
|
448 void *void_val,
|
|
|
449 void *void_closure)
|
|
428
|
450 {
|
|
|
451 /* This function does not GC */
|
|
|
452 Lisp_Object key;
|
|
|
453 struct get_profiling_info_closure *closure
|
|
|
454 = (struct get_profiling_info_closure *) void_closure;
|
|
|
455 EMACS_INT val;
|
|
|
456
|
|
826
|
457 key = VOID_TO_LISP (void_key);
|
|
428
|
458 val = (EMACS_INT) void_val;
|
|
|
459
|
|
1123
|
460 Fputhash (key, make_int (val), closure->timing);
|
|
428
|
461 return 0;
|
|
|
462 }
|
|
|
463
|
|
1292
|
464 static Lisp_Object
|
|
|
465 copy_hash_table_or_blank (Lisp_Object table)
|
|
|
466 {
|
|
|
467 return !NILP (table) ? Fcopy_hash_table (table) :
|
|
|
468 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK,
|
|
|
469 HASH_TABLE_EQ);
|
|
|
470 }
|
|
|
471
|
|
428
|
472 DEFUN ("get-profiling-info", Fget_profiling_info, 0, 0, 0, /*
|
|
1123
|
473 Return the currently recorded profiling info.
|
|
|
474 The format is a plist of symbols describing type of info recorded and
|
|
|
475 an associated type-specific entry. Currently, the following info types
|
|
|
476 are recorded
|
|
|
477
|
|
|
478 `timing'
|
|
1292
|
479 A hash table of function descriptions (funcallable objects or strings
|
|
|
480 describing internal processing operations -- redisplay, garbage
|
|
|
481 collection, etc.), along with associated tick counts (the frequency of
|
|
|
482 ticks is controlled by `default-profiling-interval' or the argument to
|
|
|
483 `start-profiling').
|
|
|
484
|
|
|
485 `total-timing'
|
|
|
486 A hash table of function descriptions and associated timing count for
|
|
|
487 the function and all descendants.
|
|
1123
|
488
|
|
|
489 `call-count'
|
|
1292
|
490 A hash table of function descriptions and associated call counts.
|
|
|
491
|
|
|
492 `gc-usage'
|
|
|
493 A hash table of function descriptions and associated amount of consing.
|
|
|
494
|
|
|
495 `total-gc-usage'
|
|
|
496 A hash table of function descriptions and associated amount of consing
|
|
|
497 in the function and all descendants.
|
|
428
|
498 */
|
|
|
499 ())
|
|
|
500 {
|
|
|
501 /* This function does not GC */
|
|
|
502 struct get_profiling_info_closure closure;
|
|
1292
|
503 Lisp_Object retv;
|
|
|
504 int depth = internal_bind_int (&in_profiling, 1 + in_profiling);
|
|
|
505 const void *overhead;
|
|
428
|
506
|
|
1123
|
507 closure.timing =
|
|
|
508 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
509
|
|
428
|
510 if (big_profile_table)
|
|
|
511 {
|
|
1292
|
512 int count = internal_bind_int ((int *) &profiling_lock, 1);
|
|
1123
|
513 maphash (get_profiling_info_timing_maphash, big_profile_table, &closure);
|
|
1292
|
514
|
|
|
515 /* OK, OK ... the total-timing table is not going to have an entry
|
|
|
516 for profile overhead, and it looks strange for it to come out 0,
|
|
|
517 so make sure it looks reasonable. */
|
|
|
518 if (!gethash (LISP_TO_VOID (QSprofile_overhead), big_profile_table,
|
|
|
519 &overhead))
|
|
|
520 overhead = 0;
|
|
|
521 Fputhash (QSprofile_overhead, make_int ((EMACS_INT) overhead),
|
|
|
522 Vtotal_timing_profile_table);
|
|
|
523
|
|
771
|
524 unbind_to (count);
|
|
428
|
525 }
|
|
1123
|
526
|
|
1292
|
527 retv = nconc2 (list6 (Qtiming, closure.timing, Qtotal_timing,
|
|
|
528 copy_hash_table_or_blank (Vtotal_timing_profile_table),
|
|
|
529 Qcall_count,
|
|
|
530 copy_hash_table_or_blank (Vcall_count_profile_table)),
|
|
|
531 list4 (Qgc_usage,
|
|
|
532 copy_hash_table_or_blank (Vgc_usage_profile_table),
|
|
|
533 Qtotal_gc_usage,
|
|
|
534 copy_hash_table_or_blank (Vtotal_gc_usage_profile_table
|
|
|
535 )));
|
|
|
536 unbind_to (depth);
|
|
|
537 return retv;
|
|
1123
|
538 }
|
|
|
539
|
|
|
540 static int
|
|
|
541 set_profiling_info_timing_maphash (Lisp_Object key,
|
|
|
542 Lisp_Object val,
|
|
2286
|
543 void *UNUSED (void_closure))
|
|
1123
|
544 {
|
|
|
545 /* This function does not GC */
|
|
|
546 if (!INTP (val))
|
|
|
547 invalid_argument_2
|
|
|
548 ("Function timing count is not an integer in given entry",
|
|
|
549 key, val);
|
|
|
550
|
|
|
551 puthash (LISP_TO_VOID (key), (void *) XINT (val), big_profile_table);
|
|
|
552
|
|
|
553 return 0;
|
|
|
554 }
|
|
|
555
|
|
|
556 DEFUN ("set-profiling-info", Fset_profiling_info, 1, 1, 0, /*
|
|
|
557 Set the currently recorded profiling info.
|
|
|
558 INFO should be in the same format returned by `get-profiling-info',
|
|
|
559 as described there.
|
|
|
560 */
|
|
|
561 (info))
|
|
|
562 {
|
|
1292
|
563 int depth;
|
|
1123
|
564 /* This function does not GC */
|
|
|
565 Fclear_profiling_info ();
|
|
|
566
|
|
1292
|
567 depth = internal_bind_int (&in_profiling, 1 + in_profiling);
|
|
1123
|
568 {
|
|
|
569 EXTERNAL_PROPERTY_LIST_LOOP_3 (key, value, info)
|
|
|
570 {
|
|
|
571 if (EQ (key, Qtiming))
|
|
|
572 {
|
|
|
573 CHECK_HASH_TABLE (value);
|
|
|
574 create_timing_profile_table ();
|
|
1292
|
575 profiling_lock = 1;
|
|
1123
|
576 elisp_maphash_unsafe (set_profiling_info_timing_maphash, value,
|
|
|
577 NULL);
|
|
1292
|
578 profiling_lock = 0;
|
|
1123
|
579 }
|
|
|
580 else if (EQ (key, Qcall_count))
|
|
1292
|
581 Vcall_count_profile_table = Fcopy_hash_table (value);
|
|
|
582 else if (EQ (key, Qtotal_timing))
|
|
|
583 Vtotal_timing_profile_table = Fcopy_hash_table (value);
|
|
|
584 else if (EQ (key, Qgc_usage))
|
|
|
585 Vgc_usage_profile_table = Fcopy_hash_table (value);
|
|
|
586 else if (EQ (key, Qtotal_gc_usage))
|
|
|
587 Vtotal_gc_usage_profile_table = Fcopy_hash_table (value);
|
|
1123
|
588 else
|
|
|
589 invalid_constant ("Unrecognized profiling-info keyword", key);
|
|
|
590 }
|
|
|
591 }
|
|
|
592
|
|
1292
|
593 unbind_to (depth);
|
|
1123
|
594 return Qnil;
|
|
428
|
595 }
|
|
|
596
|
|
|
597 static int
|
|
442
|
598 mark_profiling_info_maphash (const void *void_key,
|
|
2286
|
599 void *UNUSED (void_val),
|
|
|
600 void *UNUSED (void_closure))
|
|
428
|
601 {
|
|
1598
|
602 #ifdef USE_KKCC
|
|
|
603 kkcc_gc_stack_push_lisp_object (VOID_TO_LISP (void_key));
|
|
|
604 #else /* NOT USE_KKCC */
|
|
1292
|
605 mark_object (VOID_TO_LISP (void_key));
|
|
1598
|
606 #endif /* NOT USE_KKCC */
|
|
428
|
607 return 0;
|
|
|
608 }
|
|
|
609
|
|
|
610 void
|
|
|
611 mark_profiling_info (void)
|
|
|
612 {
|
|
|
613 /* This function does not GC */
|
|
|
614 if (big_profile_table)
|
|
|
615 {
|
|
1292
|
616 profiling_lock = 1;
|
|
428
|
617 maphash (mark_profiling_info_maphash, big_profile_table, 0);
|
|
1292
|
618 profiling_lock = 0;
|
|
428
|
619 }
|
|
|
620 }
|
|
|
621
|
|
|
622 DEFUN ("profiling-active-p", Fprofiling_active_p, 0, 0, 0, /*
|
|
|
623 Return non-nil if profiling information is currently being recorded.
|
|
|
624 */
|
|
|
625 ())
|
|
|
626 {
|
|
|
627 return profiling_active ? Qt : Qnil;
|
|
|
628 }
|
|
|
629
|
|
|
630 void
|
|
|
631 syms_of_profile (void)
|
|
|
632 {
|
|
|
633 DEFSUBR (Fstart_profiling);
|
|
|
634 DEFSUBR (Fstop_profiling);
|
|
|
635 DEFSUBR (Fget_profiling_info);
|
|
1123
|
636 DEFSUBR (Fset_profiling_info);
|
|
428
|
637 DEFSUBR (Fclear_profiling_info);
|
|
|
638 DEFSUBR (Fprofiling_active_p);
|
|
|
639 }
|
|
|
640
|
|
|
641 void
|
|
|
642 vars_of_profile (void)
|
|
|
643 {
|
|
|
644 DEFVAR_INT ("default-profiling-interval", &default_profiling_interval /*
|
|
|
645 Default CPU time in microseconds between profiling sampling.
|
|
|
646 Used when the argument to `start-profiling' is nil or omitted.
|
|
1346
|
647 Under Unix, the time in question is CPU time (when the program is executing
|
|
|
648 or the kernel is executing on behalf of the program) and not real time.
|
|
|
649 Under MS Windows and Cygwin, the time is real time, but time spent blocking
|
|
|
650 while waiting for an event is ignored, to get more accurate results.
|
|
|
651 Note that there is usually a machine-dependent limit on how small this
|
|
|
652 value can be.
|
|
428
|
653 */ );
|
|
|
654 default_profiling_interval = 1000;
|
|
|
655
|
|
1123
|
656 staticpro (&Vcall_count_profile_table);
|
|
428
|
657 Vcall_count_profile_table = Qnil;
|
|
|
658
|
|
1292
|
659 staticpro (&Vgc_usage_profile_table);
|
|
|
660 Vgc_usage_profile_table = Qnil;
|
|
|
661
|
|
|
662 staticpro (&Vtotal_gc_usage_profile_table);
|
|
|
663 Vtotal_gc_usage_profile_table = Qnil;
|
|
|
664
|
|
|
665 staticpro (&Vtotal_timing_profile_table);
|
|
|
666 Vtotal_timing_profile_table = Qnil;
|
|
428
|
667
|
|
1292
|
668 #if 0
|
|
|
669 /* #### This is supposed to be for KKCC but KKCC doesn't use this stuff
|
|
|
670 currently. */
|
|
2367
|
671 dump_add_root_block_ptr (&big_profile_table, &plain_hash_table_description);
|
|
1292
|
672 #endif /* 0 */
|
|
|
673
|
|
|
674 profiling_lock = 0;
|
|
|
675
|
|
771
|
676 QSunknown = build_msg_string ("(unknown)");
|
|
428
|
677 staticpro (&QSunknown);
|
|
|
678 QSprocessing_events_at_top_level =
|
|
771
|
679 build_msg_string ("(processing events at top level)");
|
|
428
|
680 staticpro (&QSprocessing_events_at_top_level);
|
|
1292
|
681 QSprofile_overhead = build_msg_string ("(profile overhead)");
|
|
|
682 staticpro (&QSprofile_overhead);
|
|
1123
|
683
|
|
|
684 DEFSYMBOL (Qtiming);
|
|
1292
|
685 DEFSYMBOL (Qtotal_timing);
|
|
1123
|
686 DEFSYMBOL (Qcall_count);
|
|
1292
|
687 DEFSYMBOL (Qgc_usage);
|
|
|
688 DEFSYMBOL (Qtotal_gc_usage);
|
|
428
|
689 }
|
