Mercurial > hg > xemacs-beta
annotate src/profile.c @ 5940:c608d4b0b75e cygwin64 tip
rescue lost branch from 64bit.backup
| author | Henry Thompson <ht@markup.co.uk> |
|---|---|
| date | Thu, 16 Dec 2021 18:48:58 +0000 |
| parents | 3192994c49ca |
| children | e2fae7783046 |
| rev | line source |
|---|---|
| 428 | 1 /* Why the hell is XEmacs so fucking slow? |
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2 Copyright (C) 1996, 2002, 2003, 2004, 2010 Ben Wing. |
| 428 | 3 Copyright (C) 1998 Free Software Foundation, Inc. |
| 4 | |
| 5 This file is part of XEmacs. | |
| 6 | |
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7 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
| 428 | 11 |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 #include <config.h> | |
| 21 #include "lisp.h" | |
| 22 | |
| 23 #include "backtrace.h" | |
| 24 #include "bytecode.h" | |
| 25 #include "elhash.h" | |
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26 #include "gc.h" |
| 428 | 27 #include "hash.h" |
| 1315 | 28 #include "profile.h" |
| 428 | 29 |
| 30 #include "syssignal.h" | |
| 31 #include "systime.h" | |
| 32 | |
| 611 | 33 #ifndef HAVE_SETITIMER |
| 34 #error Sorry charlie. We need a scalpel and all we have is a lawnmower. | |
| 35 #endif | |
| 36 | |
| 1292 | 37 #ifdef WIN32_ANY |
| 38 int mswindows_is_blocking; | |
| 39 #endif | |
| 40 | |
| 2367 | 41 /* Written by Ben Wing. */ |
| 428 | 42 |
| 2367 | 43 /* |
| 428 | 44 |
| 2367 | 45 Documented in |
| 428 | 46 |
| 2367 | 47 (Info-goto-node "(internals)Profiling") |
| 1292 | 48 */ |
| 49 | |
| 50 /* We use a plain table here because we're recording inside of a signal | |
| 51 handler. */ | |
| 428 | 52 static struct hash_table *big_profile_table; |
| 1292 | 53 Lisp_Object Vtotal_timing_profile_table; |
| 428 | 54 Lisp_Object Vcall_count_profile_table; |
| 1292 | 55 Lisp_Object Vtotal_gc_usage_profile_table; |
| 56 Lisp_Object Vgc_usage_profile_table; | |
| 57 | |
| 58 extern int lisp_eval_depth; | |
| 59 | |
| 60 extern EMACS_UINT total_consing; | |
| 61 static volatile EMACS_UINT total_ticks; | |
| 428 | 62 |
| 458 | 63 Fixnum default_profiling_interval; |
| 428 | 64 |
| 65 int profiling_active; | |
| 66 | |
| 1292 | 67 static Lisp_Object QSprocessing_events_at_top_level; |
| 68 static Lisp_Object QSunknown, QSprofile_overhead; | |
| 69 | |
| 2514 | 70 #ifdef DEBUG_XEMACS |
| 71 /* For temporary profiling */ | |
| 72 Lisp_Object QSin_temp_spot_1; | |
| 73 Lisp_Object QSin_temp_spot_2; | |
| 74 Lisp_Object QSin_temp_spot_3; | |
| 75 Lisp_Object QSin_temp_spot_4; | |
| 76 Lisp_Object QSin_temp_spot_5; | |
| 77 #endif /* DEBUG_XEMACS */ | |
| 78 | |
| 1292 | 79 static Lisp_Object Qtiming, Qtotal_timing, Qcall_count; |
| 80 static Lisp_Object Qgc_usage, Qtotal_gc_usage; | |
| 81 | |
| 82 /* This needs to be >= the total number of defined internal sections, | |
| 83 plus 1 or 2?? Set it extra big just to be ultra-paranoid. */ | |
| 84 #define EXTRA_BREATHING_ROOM 100 | |
| 428 | 85 |
| 1292 | 86 /* We use profiling_lock to prevent the signal handler from writing to |
| 87 the table while another routine is operating on it. We also set | |
| 88 profiling_lock in case the timeout between signal calls is short | |
| 89 enough to catch us while we're already in there. */ | |
| 90 static volatile int profiling_lock; | |
| 428 | 91 |
| 1292 | 92 /* Whether we're in the process of doing *any* profiling-related stuff. |
| 93 Used to indicate amount of time spent profiling. */ | |
| 94 static int in_profiling; | |
| 95 | |
| 96 #if 0 /* #### for KKCC, eventually */ | |
| 1123 | 97 |
| 1292 | 98 static const struct memory_description hentry_description_1[] = { |
| 99 { XD_LISP_OBJECT, offsetof (hentry, key) }, | |
| 100 { XD_END } | |
| 101 }; | |
| 102 | |
| 103 static const struct sized_memory_description hentry_description = { | |
| 104 sizeof (hentry), | |
| 105 hentry_description_1 | |
| 106 }; | |
| 428 | 107 |
| 1292 | 108 static const struct memory_description plain_hash_table_description_1[] = { |
| 109 { XD_ELEMCOUNT, offsetof (struct hash_table, size) }, | |
| 2367 | 110 { XD_BLOCK_PTR, offsetof (struct hash_table, harray), XD_INDIRECT (0, 0), |
| 2551 | 111 { &hentry_description } }, |
| 1292 | 112 { XD_END } |
| 113 }; | |
| 114 | |
| 115 static const struct sized_memory_description plain_hash_table_description = { | |
| 116 sizeof (struct hash_table), | |
| 117 plain_hash_table_description_1 | |
| 118 }; | |
| 119 | |
| 120 #endif /* 0 */ | |
| 1123 | 121 |
| 122 static void | |
| 123 create_timing_profile_table (void) | |
| 124 { | |
| 1292 | 125 /* The hash code can safely be called from a signal handler except when |
| 126 it has to grow the hash table. In this case, it calls realloc(), | |
| 5038 | 127 which is not (in general) reentrant. The way we deal with this is |
| 1292 | 128 documented at the top of this file. */ |
| 1123 | 129 if (!big_profile_table) |
| 1292 | 130 big_profile_table = make_hash_table (2000); |
| 131 } | |
| 132 | |
| 133 static void | |
| 134 create_profile_tables (void) | |
| 135 { | |
| 136 create_timing_profile_table (); | |
| 137 if (NILP (Vtotal_timing_profile_table)) | |
| 138 Vtotal_timing_profile_table = | |
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139 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, Qeq); |
| 1292 | 140 if (NILP (Vcall_count_profile_table)) |
| 141 Vcall_count_profile_table = | |
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142 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, Qeq); |
| 1292 | 143 if (NILP (Vgc_usage_profile_table)) |
| 144 Vgc_usage_profile_table = | |
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145 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, Qeq); |
| 1292 | 146 if (NILP (Vtotal_gc_usage_profile_table)) |
| 147 Vtotal_gc_usage_profile_table = | |
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148 make_lisp_hash_table (1000, HASH_TABLE_NON_WEAK, Qeq); |
| 1292 | 149 } |
| 150 | |
| 151 static Lisp_Object | |
| 152 current_profile_function (void) | |
| 153 { | |
| 154 Lisp_Object fun; | |
| 155 struct backtrace *bt = backtrace_list; | |
| 156 | |
| 157 /* 2 because we set in_profiling when we entered the current routine. */ | |
| 158 if (in_profiling >= 2) | |
| 159 return QSprofile_overhead; | |
| 160 | |
| 161 /* Find a function actually being called. Potentially (?) there could be | |
| 162 a number of non-calling funs -- calling foo autoloads, which tries to | |
| 163 call bar, but requires evalling its args first, which calls baz, ... | |
| 164 If profiling was not enabled when the function was called, just treat | |
| 165 the function as actually called, because the info about whether we've | |
| 166 finished the preamble will not have been recorded. */ | |
| 167 for (; bt && !bt->function_being_called; bt = bt->next) | |
| 168 ; | |
| 169 | |
| 170 if (bt) | |
| 171 { | |
| 172 fun = *bt->function; | |
| 173 | |
| 174 if (!SYMBOLP (fun) | |
| 175 && !COMPILED_FUNCTIONP (fun) | |
| 176 && !SUBRP (fun) | |
| 177 && !CONSP (fun) | |
| 178 && !STRINGP (fun)) | |
| 179 fun = QSunknown; | |
| 180 } | |
| 181 else | |
| 182 fun = QSprocessing_events_at_top_level; | |
| 183 return fun; | |
| 184 } | |
| 185 | |
| 186 void | |
| 187 profile_record_consing (EMACS_INT size) | |
| 188 { | |
| 189 in_profiling++; | |
| 2421 | 190 inchash_eq (current_profile_function (), Vgc_usage_profile_table, size); |
| 1292 | 191 in_profiling--; |
| 192 } | |
| 193 | |
| 194 void | |
| 195 profile_record_unconsing (EMACS_INT size) | |
| 196 { | |
| 197 /* If we don't want to record values less than 0, change this; but then | |
| 198 the totals won't be accurate. */ | |
| 199 profile_record_consing (-size); | |
| 1123 | 200 } |
| 201 | |
| 1292 | 202 inline static void |
| 203 profile_sow_backtrace (struct backtrace *bt) | |
| 428 | 204 { |
| 1292 | 205 bt->current_total_timing_val = |
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206 XFIXNUM (Fgethash (*bt->function, Vtotal_timing_profile_table, Qzero)); |
| 1292 | 207 bt->current_total_gc_usage_val = |
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208 XFIXNUM (Fgethash (*bt->function, Vtotal_gc_usage_profile_table, Qzero)); |
| 1292 | 209 bt->function_being_called = 1; |
| 210 /* Need to think carefully about the exact order of operations here | |
| 211 so that we don't end up with totals being less than function-only | |
| 212 values; */ | |
| 213 bt->total_consing_at_start = total_consing; | |
| 214 /* Order of operation is tricky here because we want the total function | |
| 215 time to be as close as possible to (and absolutely not less than) the | |
| 216 function-only time. From the sigprof-handler's perspective, the | |
| 217 function is "entered" the moment we finish executing the | |
| 218 in_profiling-- statement below, and ends the moment we finish | |
| 219 executing the in_profiling++ statement in | |
| 220 profile_record_just_called(). By recording the tick value as close as | |
| 221 possible to the "in-function" window but not in it, we satisfy the | |
| 222 conditions just mentioned. */ | |
| 223 bt->total_ticks_at_start = total_ticks; | |
| 224 } | |
| 428 | 225 |
| 1292 | 226 void |
| 227 profile_record_about_to_call (struct backtrace *bt) | |
| 228 { | |
| 229 in_profiling++; | |
| 230 profiling_lock = 1; | |
| 231 /* See comments in create_timing_profile_table(). */ | |
| 232 pregrow_hash_table_if_necessary (big_profile_table, EXTRA_BREATHING_ROOM); | |
| 233 profiling_lock = 0; | |
| 2421 | 234 inchash_eq (*bt->function, Vcall_count_profile_table, 1); |
| 1292 | 235 /* This may be set if the function was in its preamble at the time that |
| 236 `start-profiling' was called. If so, we shouldn't reset the values | |
| 237 because we may get inconsistent results, since we have already started | |
| 238 recording ticks and consing for the function. */ | |
| 239 if (!bt->function_being_called) | |
| 240 profile_sow_backtrace (bt); | |
| 241 in_profiling--; | |
| 242 } | |
| 428 | 243 |
| 1292 | 244 inline static void |
| 245 profile_reap_backtrace (struct backtrace *bt) | |
| 246 { | |
| 247 EMACS_UINT ticks; | |
| 248 /* The following statement *MUST* come directly after the preceding one! | |
| 249 See the comment above. */ | |
| 250 ticks = total_ticks; | |
| 251 /* We need to reset the "in-function" flag here. Otherwise the sigprof | |
| 252 handler will record more ticks for the function while the post-amble | |
| 253 is executing, and its value will be > our total value. */ | |
| 254 bt->function_being_called = 0; | |
| 255 Fputhash (*bt->function, | |
| 256 /* This works even when the total_ticks value has overwrapped. | |
| 257 Same for total_consing below. */ | |
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258 make_fixnum ((EMACS_INT) (ticks - bt->total_ticks_at_start) |
| 1292 | 259 + bt->current_total_timing_val), |
| 260 Vtotal_timing_profile_table); | |
| 261 Fputhash (*bt->function, | |
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262 make_fixnum ((EMACS_INT) |
| 1292 | 263 (total_consing - bt->total_consing_at_start) |
| 264 + bt->current_total_gc_usage_val), | |
| 265 Vtotal_gc_usage_profile_table); | |
| 266 } | |
| 267 | |
| 268 void | |
| 269 profile_record_just_called (struct backtrace *bt) | |
| 270 { | |
| 271 in_profiling++; | |
| 272 profile_reap_backtrace (bt); | |
| 273 in_profiling--; | |
| 274 } | |
| 275 | |
| 276 /* Called when unwinding the catch stack after a throw or signal, to | |
| 277 note that we are exiting the function. */ | |
| 278 void | |
| 279 profile_record_unwind (struct backtrace *bt) | |
| 280 { | |
| 281 /* We may have thrown while still in a function's preamble. */ | |
| 282 if (bt->function_being_called) | |
| 283 profile_record_just_called (bt); | |
| 428 | 284 } |
| 285 | |
| 286 static SIGTYPE | |
| 2286 | 287 sigprof_handler (int UNUSED (signo)) |
| 428 | 288 { |
| 1292 | 289 #ifdef WIN32_ANY |
| 290 /* Windows unfortunately does not have any such thing as setitimer | |
| 291 (ITIMER_PROF, ...), which runs in process time. Everything is real | |
| 292 time. So to get slightly more reasonable results, ignore completely | |
| 293 the times when we're blocking. Same applies, of course, to Cygwin. */ | |
| 294 if (mswindows_is_blocking) | |
| 295 return; | |
| 296 #endif | |
| 297 | |
| 298 in_profiling++; | |
| 299 total_ticks++; | |
| 300 | |
| 428 | 301 /* Don't do anything if we are shutting down, or are doing a maphash |
| 302 or clrhash on the table. */ | |
| 1292 | 303 if (!profiling_lock && !preparing_for_armageddon) |
| 428 | 304 { |
| 1292 | 305 Lisp_Object fun = current_profile_function (); |
| 428 | 306 |
| 307 /* If something below causes an error to be signaled, we'll | |
| 308 not correctly reset this flag. But we'll be in worse shape | |
| 309 than that anyways, since we'll longjmp back to the last | |
| 310 condition case. */ | |
| 1292 | 311 profiling_lock = 1; |
| 428 | 312 |
| 313 { | |
| 314 long count; | |
| 442 | 315 const void *vval; |
| 428 | 316 |
| 5013 | 317 if (gethash (STORE_LISP_IN_VOID (fun), big_profile_table, &vval)) |
| 428 | 318 count = (long) vval; |
| 319 else | |
| 320 count = 0; | |
| 321 count++; | |
| 442 | 322 vval = (const void *) count; |
| 5013 | 323 puthash (STORE_LISP_IN_VOID (fun), (void *) vval, big_profile_table); |
| 428 | 324 } |
| 325 | |
| 1292 | 326 profiling_lock = 0; |
| 428 | 327 } |
| 1292 | 328 in_profiling--; |
| 428 | 329 } |
| 330 | |
| 1292 | 331 DEFUN ("start-profiling", Fstart_profiling, 0, 1, "", /* |
| 428 | 332 Start profiling, with profile queries every MICROSECS. |
| 333 If MICROSECS is nil or omitted, the value of `default-profiling-interval' | |
| 334 is used. | |
| 335 | |
| 1123 | 336 Information on function timings and call counts is currently recorded. |
| 1292 | 337 You can retrieve the recorded profiling info using `get-profiling-info', |
| 338 or the higher-level function `profile-results'. | |
| 428 | 339 |
| 340 Starting and stopping profiling does not clear the currently recorded | |
| 341 info. Thus you can start and stop as many times as you want and everything | |
| 1292 | 342 will be properly accumulated. (To clear, use `clear-profiling-info'.) |
| 428 | 343 */ |
| 344 (microsecs)) | |
| 345 { | |
| 346 /* This function can GC */ | |
| 347 int msecs; | |
| 348 struct itimerval foo; | |
| 1292 | 349 int depth; |
| 428 | 350 |
| 1292 | 351 if (profiling_active) |
| 352 return Qnil; | |
| 353 depth = internal_bind_int (&in_profiling, 1 + in_profiling); | |
| 354 | |
| 355 create_profile_tables (); | |
| 356 /* See comments at top of file and in create_timing_profile_table(). | |
| 357 We ensure enough breathing room for all entries currently on the | |
| 358 stack. */ | |
| 359 pregrow_hash_table_if_necessary (big_profile_table, | |
| 360 EXTRA_BREATHING_ROOM + lisp_eval_depth); | |
| 428 | 361 |
| 362 if (NILP (microsecs)) | |
| 363 msecs = default_profiling_interval; | |
| 364 else | |
| 365 { | |
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366 #ifdef HAVE_BIGNUM |
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367 check_integer_range (microsecs, make_fixnum (1000), make_integer (INT_MAX)); |
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368 msecs = |
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369 BIGNUMP (microsecs) ? bignum_to_int (XBIGNUM_DATA (microsecs)) : |
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370 XFIXNUM (microsecs); |
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371 #else |
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372 check_integer_range (microsecs, make_fixnum (1000), |
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373 make_fixnum (MOST_POSITIVE_FIXNUM)); |
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374 msecs = XFIXNUM (microsecs); |
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375 #endif |
| 428 | 376 } |
| 377 if (msecs <= 0) | |
| 378 msecs = 1000; | |
| 379 | |
| 613 | 380 set_timeout_signal (SIGPROF, sigprof_handler); |
| 1292 | 381 { |
| 382 struct backtrace *bt = backtrace_list; | |
| 383 | |
| 384 /* When we begin profiling, pretend like we just entered all the | |
| 385 functions currently on the stack. When we stop profiling, do the | |
| 386 opposite. This ensures consistent values being recorded for both | |
| 387 function-only and total in such cases. */ | |
| 388 for (; bt; bt = bt->next) | |
| 389 profile_sow_backtrace (bt); | |
| 390 } | |
| 391 profiling_active = 1; | |
| 392 profiling_lock = 0; | |
| 428 | 393 foo.it_value.tv_sec = 0; |
| 394 foo.it_value.tv_usec = msecs; | |
| 395 EMACS_NORMALIZE_TIME (foo.it_value); | |
| 396 foo.it_interval = foo.it_value; | |
| 611 | 397 qxe_setitimer (ITIMER_PROF, &foo, 0); |
| 1292 | 398 unbind_to (depth); |
| 428 | 399 return Qnil; |
| 400 } | |
| 401 | |
| 1292 | 402 DEFUN ("stop-profiling", Fstop_profiling, 0, 0, "", /* |
| 428 | 403 Stop profiling. |
| 404 */ | |
| 405 ()) | |
| 406 { | |
| 407 /* This function does not GC */ | |
| 408 struct itimerval foo; | |
| 409 | |
| 1292 | 410 if (!profiling_active) |
| 411 return Qnil; | |
| 412 in_profiling++; | |
| 428 | 413 foo.it_value.tv_sec = 0; |
| 414 foo.it_value.tv_usec = 0; | |
| 415 foo.it_interval = foo.it_value; | |
| 611 | 416 qxe_setitimer (ITIMER_PROF, &foo, 0); |
| 428 | 417 profiling_active = 0; |
| 1292 | 418 { |
| 419 struct backtrace *bt = backtrace_list; | |
| 420 | |
| 421 for (; bt; bt = bt->next) | |
| 422 profile_reap_backtrace (bt); | |
| 423 } | |
| 613 | 424 set_timeout_signal (SIGPROF, fatal_error_signal); |
| 1292 | 425 in_profiling--; |
| 428 | 426 return Qnil; |
| 427 } | |
| 428 | |
| 1123 | 429 DEFUN ("clear-profiling-info", Fclear_profiling_info, 0, 0, "", /* |
| 430 Clear out the recorded profiling info. | |
| 431 This clears both the internal timing information and the call counts in | |
| 432 `call-count-profile-table'. | |
| 433 */ | |
| 434 ()) | |
| 435 { | |
| 1292 | 436 in_profiling++; |
| 1123 | 437 /* This function does not GC */ |
| 438 if (big_profile_table) | |
| 439 { | |
| 1292 | 440 profiling_lock = 1; |
| 1123 | 441 clrhash (big_profile_table); |
| 1292 | 442 profiling_lock = 0; |
| 1123 | 443 } |
| 1292 | 444 if (!NILP (Vtotal_timing_profile_table)) |
| 445 Fclrhash (Vtotal_timing_profile_table); | |
| 1123 | 446 if (!NILP (Vcall_count_profile_table)) |
| 447 Fclrhash (Vcall_count_profile_table); | |
| 1292 | 448 if (!NILP (Vgc_usage_profile_table)) |
| 449 Fclrhash (Vgc_usage_profile_table); | |
| 450 if (!NILP (Vtotal_gc_usage_profile_table)) | |
| 451 Fclrhash (Vtotal_gc_usage_profile_table); | |
| 452 in_profiling--; | |
| 453 | |
| 1123 | 454 return Qnil; |
| 455 } | |
| 456 | |
| 428 | 457 struct get_profiling_info_closure |
| 458 { | |
| 1123 | 459 Lisp_Object timing; |
| 428 | 460 }; |
| 461 | |
| 462 static int | |
| 1123 | 463 get_profiling_info_timing_maphash (const void *void_key, |
| 464 void *void_val, | |
| 465 void *void_closure) | |
| 428 | 466 { |
| 467 /* This function does not GC */ | |
| 468 Lisp_Object key; | |
| 469 struct get_profiling_info_closure *closure | |
| 470 = (struct get_profiling_info_closure *) void_closure; | |
| 471 EMACS_INT val; | |
| 472 | |
| 5013 | 473 key = GET_LISP_FROM_VOID (void_key); |
| 428 | 474 val = (EMACS_INT) void_val; |
| 475 | |
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476 Fputhash (key, make_fixnum (val), closure->timing); |
| 428 | 477 return 0; |
| 478 } | |
| 479 | |
| 1292 | 480 static Lisp_Object |
| 481 copy_hash_table_or_blank (Lisp_Object table) | |
| 482 { | |
| 483 return !NILP (table) ? Fcopy_hash_table (table) : | |
| 484 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, | |
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485 Qeq); |
| 1292 | 486 } |
| 487 | |
| 428 | 488 DEFUN ("get-profiling-info", Fget_profiling_info, 0, 0, 0, /* |
| 1123 | 489 Return the currently recorded profiling info. |
| 490 The format is a plist of symbols describing type of info recorded and | |
| 491 an associated type-specific entry. Currently, the following info types | |
| 492 are recorded | |
| 493 | |
| 494 `timing' | |
| 1292 | 495 A hash table of function descriptions (funcallable objects or strings |
| 496 describing internal processing operations -- redisplay, garbage | |
| 497 collection, etc.), along with associated tick counts (the frequency of | |
| 498 ticks is controlled by `default-profiling-interval' or the argument to | |
| 499 `start-profiling'). | |
| 500 | |
| 501 `total-timing' | |
| 502 A hash table of function descriptions and associated timing count for | |
| 503 the function and all descendants. | |
| 1123 | 504 |
| 505 `call-count' | |
| 1292 | 506 A hash table of function descriptions and associated call counts. |
| 507 | |
| 508 `gc-usage' | |
| 509 A hash table of function descriptions and associated amount of consing. | |
| 510 | |
| 511 `total-gc-usage' | |
| 512 A hash table of function descriptions and associated amount of consing | |
| 513 in the function and all descendants. | |
| 428 | 514 */ |
| 515 ()) | |
| 516 { | |
| 517 /* This function does not GC */ | |
| 518 struct get_profiling_info_closure closure; | |
| 1292 | 519 Lisp_Object retv; |
| 520 int depth = internal_bind_int (&in_profiling, 1 + in_profiling); | |
| 521 const void *overhead; | |
| 428 | 522 |
| 1123 | 523 closure.timing = |
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524 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, Qequal); |
| 1123 | 525 |
| 428 | 526 if (big_profile_table) |
| 527 { | |
| 1292 | 528 int count = internal_bind_int ((int *) &profiling_lock, 1); |
| 1123 | 529 maphash (get_profiling_info_timing_maphash, big_profile_table, &closure); |
| 1292 | 530 |
| 531 /* OK, OK ... the total-timing table is not going to have an entry | |
| 532 for profile overhead, and it looks strange for it to come out 0, | |
| 533 so make sure it looks reasonable. */ | |
| 5013 | 534 if (!gethash (STORE_LISP_IN_VOID (QSprofile_overhead), big_profile_table, |
| 1292 | 535 &overhead)) |
| 536 overhead = 0; | |
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537 Fputhash (QSprofile_overhead, make_fixnum ((EMACS_INT) overhead), |
| 1292 | 538 Vtotal_timing_profile_table); |
| 539 | |
| 771 | 540 unbind_to (count); |
| 428 | 541 } |
| 1123 | 542 |
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543 retv = listu (Qtiming, closure.timing, |
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544 Qtotal_timing, |
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545 copy_hash_table_or_blank (Vtotal_timing_profile_table), |
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546 Qcall_count, |
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547 copy_hash_table_or_blank (Vcall_count_profile_table), |
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548 Qgc_usage, |
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549 copy_hash_table_or_blank (Vgc_usage_profile_table), |
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550 Qtotal_gc_usage, |
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551 copy_hash_table_or_blank (Vtotal_gc_usage_profile_table), |
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552 Qunbound); |
| 1292 | 553 unbind_to (depth); |
| 554 return retv; | |
| 1123 | 555 } |
| 556 | |
| 557 static int | |
| 558 set_profiling_info_timing_maphash (Lisp_Object key, | |
| 559 Lisp_Object val, | |
| 2286 | 560 void *UNUSED (void_closure)) |
| 1123 | 561 { |
| 562 /* This function does not GC */ | |
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563 if (!FIXNUMP (val)) |
| 1123 | 564 invalid_argument_2 |
| 565 ("Function timing count is not an integer in given entry", | |
| 566 key, val); | |
| 567 | |
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568 puthash (STORE_LISP_IN_VOID (key), (void *) XFIXNUM (val), big_profile_table); |
| 1123 | 569 |
| 570 return 0; | |
| 571 } | |
| 572 | |
| 573 DEFUN ("set-profiling-info", Fset_profiling_info, 1, 1, 0, /* | |
| 574 Set the currently recorded profiling info. | |
| 575 INFO should be in the same format returned by `get-profiling-info', | |
| 576 as described there. | |
| 577 */ | |
| 578 (info)) | |
| 579 { | |
| 1292 | 580 int depth; |
| 1123 | 581 /* This function does not GC */ |
| 582 Fclear_profiling_info (); | |
| 583 | |
| 1292 | 584 depth = internal_bind_int (&in_profiling, 1 + in_profiling); |
| 1123 | 585 { |
| 586 EXTERNAL_PROPERTY_LIST_LOOP_3 (key, value, info) | |
| 587 { | |
| 588 if (EQ (key, Qtiming)) | |
| 589 { | |
| 590 CHECK_HASH_TABLE (value); | |
| 591 create_timing_profile_table (); | |
| 1292 | 592 profiling_lock = 1; |
| 1123 | 593 elisp_maphash_unsafe (set_profiling_info_timing_maphash, value, |
| 594 NULL); | |
| 1292 | 595 profiling_lock = 0; |
| 1123 | 596 } |
| 597 else if (EQ (key, Qcall_count)) | |
| 1292 | 598 Vcall_count_profile_table = Fcopy_hash_table (value); |
| 599 else if (EQ (key, Qtotal_timing)) | |
| 600 Vtotal_timing_profile_table = Fcopy_hash_table (value); | |
| 601 else if (EQ (key, Qgc_usage)) | |
| 602 Vgc_usage_profile_table = Fcopy_hash_table (value); | |
| 603 else if (EQ (key, Qtotal_gc_usage)) | |
| 604 Vtotal_gc_usage_profile_table = Fcopy_hash_table (value); | |
| 1123 | 605 else |
| 606 invalid_constant ("Unrecognized profiling-info keyword", key); | |
| 607 } | |
| 608 } | |
| 609 | |
| 1292 | 610 unbind_to (depth); |
| 1123 | 611 return Qnil; |
| 428 | 612 } |
| 613 | |
| 614 static int | |
| 442 | 615 mark_profiling_info_maphash (const void *void_key, |
| 2286 | 616 void *UNUSED (void_val), |
| 617 void *UNUSED (void_closure)) | |
| 428 | 618 { |
| 1598 | 619 #ifdef USE_KKCC |
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620 kkcc_gc_stack_push_lisp_object_0 (GET_LISP_FROM_VOID (void_key)); |
| 1598 | 621 #else /* NOT USE_KKCC */ |
| 5013 | 622 mark_object (GET_LISP_FROM_VOID (void_key)); |
| 1598 | 623 #endif /* NOT USE_KKCC */ |
| 428 | 624 return 0; |
| 625 } | |
| 626 | |
| 627 void | |
| 628 mark_profiling_info (void) | |
| 629 { | |
| 630 /* This function does not GC */ | |
| 631 if (big_profile_table) | |
| 632 { | |
| 1292 | 633 profiling_lock = 1; |
| 428 | 634 maphash (mark_profiling_info_maphash, big_profile_table, 0); |
| 1292 | 635 profiling_lock = 0; |
| 428 | 636 } |
| 637 } | |
| 638 | |
| 639 DEFUN ("profiling-active-p", Fprofiling_active_p, 0, 0, 0, /* | |
| 640 Return non-nil if profiling information is currently being recorded. | |
| 641 */ | |
| 642 ()) | |
| 643 { | |
| 644 return profiling_active ? Qt : Qnil; | |
| 645 } | |
| 646 | |
| 647 void | |
| 648 syms_of_profile (void) | |
| 649 { | |
| 650 DEFSUBR (Fstart_profiling); | |
| 651 DEFSUBR (Fstop_profiling); | |
| 652 DEFSUBR (Fget_profiling_info); | |
| 1123 | 653 DEFSUBR (Fset_profiling_info); |
| 428 | 654 DEFSUBR (Fclear_profiling_info); |
| 655 DEFSUBR (Fprofiling_active_p); | |
| 656 } | |
| 657 | |
| 658 void | |
| 659 vars_of_profile (void) | |
| 660 { | |
| 661 DEFVAR_INT ("default-profiling-interval", &default_profiling_interval /* | |
| 662 Default CPU time in microseconds between profiling sampling. | |
| 663 Used when the argument to `start-profiling' is nil or omitted. | |
| 1346 | 664 Under Unix, the time in question is CPU time (when the program is executing |
| 665 or the kernel is executing on behalf of the program) and not real time. | |
| 666 Under MS Windows and Cygwin, the time is real time, but time spent blocking | |
| 667 while waiting for an event is ignored, to get more accurate results. | |
| 668 Note that there is usually a machine-dependent limit on how small this | |
| 669 value can be. | |
| 428 | 670 */ ); |
| 671 default_profiling_interval = 1000; | |
| 672 | |
| 1123 | 673 staticpro (&Vcall_count_profile_table); |
| 428 | 674 Vcall_count_profile_table = Qnil; |
| 675 | |
| 1292 | 676 staticpro (&Vgc_usage_profile_table); |
| 677 Vgc_usage_profile_table = Qnil; | |
| 678 | |
| 679 staticpro (&Vtotal_gc_usage_profile_table); | |
| 680 Vtotal_gc_usage_profile_table = Qnil; | |
| 681 | |
| 682 staticpro (&Vtotal_timing_profile_table); | |
| 683 Vtotal_timing_profile_table = Qnil; | |
| 428 | 684 |
| 1292 | 685 #if 0 |
| 686 /* #### This is supposed to be for KKCC but KKCC doesn't use this stuff | |
| 687 currently. */ | |
| 2367 | 688 dump_add_root_block_ptr (&big_profile_table, &plain_hash_table_description); |
| 1292 | 689 #endif /* 0 */ |
| 690 | |
| 691 profiling_lock = 0; | |
| 692 | |
| 2514 | 693 #ifdef DEBUG_XEMACS |
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694 QSin_temp_spot_1 = build_defer_string ("(in temp spot 1)"); |
| 2514 | 695 staticpro (&QSin_temp_spot_1); |
| 696 | |
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697 QSin_temp_spot_2 = build_defer_string ("(in temp spot 2)"); |
| 2514 | 698 staticpro (&QSin_temp_spot_2); |
| 699 | |
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700 QSin_temp_spot_3 = build_defer_string ("(in temp spot 3)"); |
| 2514 | 701 staticpro (&QSin_temp_spot_3); |
| 702 | |
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703 QSin_temp_spot_4 = build_defer_string ("(in temp spot 4)"); |
| 2514 | 704 staticpro (&QSin_temp_spot_4); |
| 705 | |
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706 QSin_temp_spot_5 = build_defer_string ("(in temp spot 5)"); |
| 2514 | 707 staticpro (&QSin_temp_spot_5); |
| 708 #endif /* DEBUG_XEMACS */ | |
| 709 | |
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710 QSunknown = build_defer_string ("(unknown)"); |
| 428 | 711 staticpro (&QSunknown); |
| 712 QSprocessing_events_at_top_level = | |
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713 build_defer_string ("(processing events at top level)"); |
| 428 | 714 staticpro (&QSprocessing_events_at_top_level); |
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715 QSprofile_overhead = build_defer_string ("(profile overhead)"); |
| 1292 | 716 staticpro (&QSprofile_overhead); |
| 1123 | 717 |
| 718 DEFSYMBOL (Qtiming); | |
| 1292 | 719 DEFSYMBOL (Qtotal_timing); |
| 1123 | 720 DEFSYMBOL (Qcall_count); |
| 1292 | 721 DEFSYMBOL (Qgc_usage); |
| 722 DEFSYMBOL (Qtotal_gc_usage); | |
| 428 | 723 } |