Mercurial > hg > CbC > CbC_gcc
annotate gcc/timevar.c @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Timing variables for measuring compiler performance. |
|
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2 Copyright (C) 2000, 2003, 2004, 2005, 2007, 2010 |
|
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3 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Alex Samuel <samuel@codesourcery.com> |
| 5 | |
| 6 This file is part of GCC. | |
| 7 | |
| 8 GCC is free software; you can redistribute it and/or modify it under | |
| 9 the terms of the GNU General Public License as published by the Free | |
| 10 Software Foundation; either version 3, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with GCC; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "system.h" | |
|
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24 #include "timevar.h" |
| 0 | 25 |
| 26 #ifndef HAVE_CLOCK_T | |
| 27 typedef int clock_t; | |
| 28 #endif | |
| 29 | |
| 30 #ifndef HAVE_STRUCT_TMS | |
| 31 struct tms | |
| 32 { | |
| 33 clock_t tms_utime; | |
| 34 clock_t tms_stime; | |
| 35 clock_t tms_cutime; | |
| 36 clock_t tms_cstime; | |
| 37 }; | |
| 38 #endif | |
| 39 | |
| 40 #ifndef RUSAGE_SELF | |
| 41 # define RUSAGE_SELF 0 | |
| 42 #endif | |
| 43 | |
| 44 /* Calculation of scale factor to convert ticks to microseconds. | |
| 45 We mustn't use CLOCKS_PER_SEC except with clock(). */ | |
| 46 #if HAVE_SYSCONF && defined _SC_CLK_TCK | |
| 47 # define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */ | |
| 48 #else | |
| 49 # ifdef CLK_TCK | |
| 50 # define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */ | |
| 51 # else | |
| 52 # ifdef HZ | |
| 53 # define TICKS_PER_SECOND HZ /* traditional UNIX */ | |
| 54 # else | |
| 55 # define TICKS_PER_SECOND 100 /* often the correct value */ | |
| 56 # endif | |
| 57 # endif | |
| 58 #endif | |
| 59 | |
| 60 /* Prefer times to getrusage to clock (each gives successively less | |
| 61 information). */ | |
| 62 #ifdef HAVE_TIMES | |
| 63 # if defined HAVE_DECL_TIMES && !HAVE_DECL_TIMES | |
| 64 extern clock_t times (struct tms *); | |
| 65 # endif | |
| 66 # define USE_TIMES | |
| 67 # define HAVE_USER_TIME | |
| 68 # define HAVE_SYS_TIME | |
| 69 # define HAVE_WALL_TIME | |
| 70 #else | |
| 71 #ifdef HAVE_GETRUSAGE | |
| 72 # if defined HAVE_DECL_GETRUSAGE && !HAVE_DECL_GETRUSAGE | |
| 73 extern int getrusage (int, struct rusage *); | |
| 74 # endif | |
| 75 # define USE_GETRUSAGE | |
| 76 # define HAVE_USER_TIME | |
| 77 # define HAVE_SYS_TIME | |
| 78 #else | |
| 79 #ifdef HAVE_CLOCK | |
| 80 # if defined HAVE_DECL_CLOCK && !HAVE_DECL_CLOCK | |
| 81 extern clock_t clock (void); | |
| 82 # endif | |
| 83 # define USE_CLOCK | |
| 84 # define HAVE_USER_TIME | |
| 85 #endif | |
| 86 #endif | |
| 87 #endif | |
| 88 | |
| 89 /* libc is very likely to have snuck a call to sysconf() into one of | |
| 90 the underlying constants, and that can be very slow, so we have to | |
| 91 precompute them. Whose wonderful idea was it to make all those | |
| 92 _constants_ variable at run time, anyway? */ | |
| 93 #ifdef USE_TIMES | |
| 94 static double ticks_to_msec; | |
| 95 #define TICKS_TO_MSEC (1 / (double)TICKS_PER_SECOND) | |
| 96 #endif | |
| 97 | |
| 98 #ifdef USE_CLOCK | |
| 99 static double clocks_to_msec; | |
| 100 #define CLOCKS_TO_MSEC (1 / (double)CLOCKS_PER_SEC) | |
| 101 #endif | |
| 102 | |
|
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103 /* True if timevars should be used. In GCC, this happens with |
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104 the -ftime-report flag. */ |
| 0 | 105 |
| 106 bool timevar_enable; | |
| 107 | |
| 108 /* Total amount of memory allocated by garbage collector. */ | |
| 109 | |
| 110 size_t timevar_ggc_mem_total; | |
| 111 | |
| 112 /* The amount of memory that will cause us to report the timevar even | |
| 113 if the time spent is not significant. */ | |
| 114 | |
| 115 #define GGC_MEM_BOUND (1 << 20) | |
| 116 | |
| 117 /* See timevar.h for an explanation of timing variables. */ | |
| 118 | |
| 119 /* A timing variable. */ | |
| 120 | |
| 121 struct timevar_def | |
| 122 { | |
| 123 /* Elapsed time for this variable. */ | |
| 124 struct timevar_time_def elapsed; | |
| 125 | |
| 126 /* If this variable is timed independently of the timing stack, | |
| 127 using timevar_start, this contains the start time. */ | |
| 128 struct timevar_time_def start_time; | |
| 129 | |
| 130 /* The name of this timing variable. */ | |
| 131 const char *name; | |
| 132 | |
| 133 /* Nonzero if this timing variable is running as a standalone | |
| 134 timer. */ | |
| 135 unsigned standalone : 1; | |
| 136 | |
| 137 /* Nonzero if this timing variable was ever started or pushed onto | |
| 138 the timing stack. */ | |
| 139 unsigned used : 1; | |
| 140 }; | |
| 141 | |
| 142 /* An element on the timing stack. Elapsed time is attributed to the | |
| 143 topmost timing variable on the stack. */ | |
| 144 | |
| 145 struct timevar_stack_def | |
| 146 { | |
| 147 /* The timing variable at this stack level. */ | |
| 148 struct timevar_def *timevar; | |
| 149 | |
| 150 /* The next lower timing variable context in the stack. */ | |
| 151 struct timevar_stack_def *next; | |
| 152 }; | |
| 153 | |
| 154 /* Declared timing variables. Constructed from the contents of | |
| 155 timevar.def. */ | |
| 156 static struct timevar_def timevars[TIMEVAR_LAST]; | |
| 157 | |
| 158 /* The top of the timing stack. */ | |
| 159 static struct timevar_stack_def *stack; | |
| 160 | |
| 161 /* A list of unused (i.e. allocated and subsequently popped) | |
| 162 timevar_stack_def instances. */ | |
| 163 static struct timevar_stack_def *unused_stack_instances; | |
| 164 | |
| 165 /* The time at which the topmost element on the timing stack was | |
| 166 pushed. Time elapsed since then is attributed to the topmost | |
| 167 element. */ | |
| 168 static struct timevar_time_def start_time; | |
| 169 | |
| 170 static void get_time (struct timevar_time_def *); | |
| 171 static void timevar_accumulate (struct timevar_time_def *, | |
| 172 struct timevar_time_def *, | |
| 173 struct timevar_time_def *); | |
| 174 | |
| 175 /* Fill the current times into TIME. The definition of this function | |
| 176 also defines any or all of the HAVE_USER_TIME, HAVE_SYS_TIME, and | |
| 177 HAVE_WALL_TIME macros. */ | |
| 178 | |
| 179 static void | |
| 180 get_time (struct timevar_time_def *now) | |
| 181 { | |
| 182 now->user = 0; | |
| 183 now->sys = 0; | |
| 184 now->wall = 0; | |
| 185 now->ggc_mem = timevar_ggc_mem_total; | |
| 186 | |
| 187 if (!timevar_enable) | |
| 188 return; | |
| 189 | |
| 190 { | |
| 191 #ifdef USE_TIMES | |
| 192 struct tms tms; | |
| 193 now->wall = times (&tms) * ticks_to_msec; | |
| 194 now->user = tms.tms_utime * ticks_to_msec; | |
| 195 now->sys = tms.tms_stime * ticks_to_msec; | |
| 196 #endif | |
| 197 #ifdef USE_GETRUSAGE | |
| 198 struct rusage rusage; | |
| 199 getrusage (RUSAGE_SELF, &rusage); | |
| 200 now->user = rusage.ru_utime.tv_sec + rusage.ru_utime.tv_usec * 1e-6; | |
| 201 now->sys = rusage.ru_stime.tv_sec + rusage.ru_stime.tv_usec * 1e-6; | |
| 202 #endif | |
| 203 #ifdef USE_CLOCK | |
| 204 now->user = clock () * clocks_to_msec; | |
| 205 #endif | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 /* Add the difference between STOP_TIME and START_TIME to TIMER. */ | |
| 210 | |
| 211 static void | |
| 212 timevar_accumulate (struct timevar_time_def *timer, | |
| 213 struct timevar_time_def *start_time, | |
| 214 struct timevar_time_def *stop_time) | |
| 215 { | |
| 216 timer->user += stop_time->user - start_time->user; | |
| 217 timer->sys += stop_time->sys - start_time->sys; | |
| 218 timer->wall += stop_time->wall - start_time->wall; | |
| 219 timer->ggc_mem += stop_time->ggc_mem - start_time->ggc_mem; | |
| 220 } | |
| 221 | |
| 222 /* Initialize timing variables. */ | |
| 223 | |
| 224 void | |
| 225 timevar_init (void) | |
| 226 { | |
| 227 timevar_enable = true; | |
| 228 | |
| 229 /* Zero all elapsed times. */ | |
| 230 memset (timevars, 0, sizeof (timevars)); | |
| 231 | |
| 232 /* Initialize the names of timing variables. */ | |
| 233 #define DEFTIMEVAR(identifier__, name__) \ | |
| 234 timevars[identifier__].name = name__; | |
| 235 #include "timevar.def" | |
| 236 #undef DEFTIMEVAR | |
| 237 | |
| 238 #ifdef USE_TIMES | |
| 239 ticks_to_msec = TICKS_TO_MSEC; | |
| 240 #endif | |
| 241 #ifdef USE_CLOCK | |
| 242 clocks_to_msec = CLOCKS_TO_MSEC; | |
| 243 #endif | |
| 244 } | |
| 245 | |
| 246 /* Push TIMEVAR onto the timing stack. No further elapsed time is | |
| 247 attributed to the previous topmost timing variable on the stack; | |
| 248 subsequent elapsed time is attributed to TIMEVAR, until it is | |
| 249 popped or another element is pushed on top. | |
| 250 | |
| 251 TIMEVAR cannot be running as a standalone timer. */ | |
| 252 | |
| 253 void | |
| 254 timevar_push_1 (timevar_id_t timevar) | |
| 255 { | |
| 256 struct timevar_def *tv = &timevars[timevar]; | |
| 257 struct timevar_stack_def *context; | |
| 258 struct timevar_time_def now; | |
| 259 | |
| 260 /* Mark this timing variable as used. */ | |
| 261 tv->used = 1; | |
| 262 | |
| 263 /* Can't push a standalone timer. */ | |
| 264 gcc_assert (!tv->standalone); | |
| 265 | |
| 266 /* What time is it? */ | |
| 267 get_time (&now); | |
| 268 | |
| 269 /* If the stack isn't empty, attribute the current elapsed time to | |
| 270 the old topmost element. */ | |
| 271 if (stack) | |
| 272 timevar_accumulate (&stack->timevar->elapsed, &start_time, &now); | |
| 273 | |
| 274 /* Reset the start time; from now on, time is attributed to | |
| 275 TIMEVAR. */ | |
| 276 start_time = now; | |
| 277 | |
| 278 /* See if we have a previously-allocated stack instance. If so, | |
| 279 take it off the list. If not, malloc a new one. */ | |
| 280 if (unused_stack_instances != NULL) | |
| 281 { | |
| 282 context = unused_stack_instances; | |
| 283 unused_stack_instances = unused_stack_instances->next; | |
| 284 } | |
| 285 else | |
| 286 context = XNEW (struct timevar_stack_def); | |
| 287 | |
| 288 /* Fill it in and put it on the stack. */ | |
| 289 context->timevar = tv; | |
| 290 context->next = stack; | |
| 291 stack = context; | |
| 292 } | |
| 293 | |
| 294 /* Pop the topmost timing variable element off the timing stack. The | |
| 295 popped variable must be TIMEVAR. Elapsed time since the that | |
| 296 element was pushed on, or since it was last exposed on top of the | |
| 297 stack when the element above it was popped off, is credited to that | |
| 298 timing variable. */ | |
| 299 | |
| 300 void | |
| 301 timevar_pop_1 (timevar_id_t timevar) | |
| 302 { | |
| 303 struct timevar_time_def now; | |
| 304 struct timevar_stack_def *popped = stack; | |
| 305 | |
| 306 gcc_assert (&timevars[timevar] == stack->timevar); | |
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307 |
| 0 | 308 /* What time is it? */ |
| 309 get_time (&now); | |
| 310 | |
| 311 /* Attribute the elapsed time to the element we're popping. */ | |
| 312 timevar_accumulate (&popped->timevar->elapsed, &start_time, &now); | |
| 313 | |
| 314 /* Reset the start time; from now on, time is attributed to the | |
| 315 element just exposed on the stack. */ | |
| 316 start_time = now; | |
| 317 | |
| 318 /* Take the item off the stack. */ | |
| 319 stack = stack->next; | |
| 320 | |
| 321 /* Don't delete the stack element; instead, add it to the list of | |
| 322 unused elements for later use. */ | |
| 323 popped->next = unused_stack_instances; | |
| 324 unused_stack_instances = popped; | |
| 325 } | |
| 326 | |
| 327 /* Start timing TIMEVAR independently of the timing stack. Elapsed | |
| 328 time until timevar_stop is called for the same timing variable is | |
| 329 attributed to TIMEVAR. */ | |
| 330 | |
| 331 void | |
| 332 timevar_start (timevar_id_t timevar) | |
| 333 { | |
| 334 struct timevar_def *tv = &timevars[timevar]; | |
| 335 | |
| 336 if (!timevar_enable) | |
| 337 return; | |
| 338 | |
| 339 /* Mark this timing variable as used. */ | |
| 340 tv->used = 1; | |
| 341 | |
| 342 /* Don't allow the same timing variable to be started more than | |
| 343 once. */ | |
| 344 gcc_assert (!tv->standalone); | |
| 345 tv->standalone = 1; | |
| 346 | |
| 347 get_time (&tv->start_time); | |
| 348 } | |
| 349 | |
| 350 /* Stop timing TIMEVAR. Time elapsed since timevar_start was called | |
| 351 is attributed to it. */ | |
| 352 | |
| 353 void | |
| 354 timevar_stop (timevar_id_t timevar) | |
| 355 { | |
| 356 struct timevar_def *tv = &timevars[timevar]; | |
| 357 struct timevar_time_def now; | |
| 358 | |
| 359 if (!timevar_enable) | |
| 360 return; | |
| 361 | |
| 362 /* TIMEVAR must have been started via timevar_start. */ | |
| 363 gcc_assert (tv->standalone); | |
| 364 | |
| 365 get_time (&now); | |
| 366 timevar_accumulate (&tv->elapsed, &tv->start_time, &now); | |
| 367 } | |
| 368 | |
| 369 /* Summarize timing variables to FP. The timing variable TV_TOTAL has | |
| 370 a special meaning -- it's considered to be the total elapsed time, | |
| 371 for normalizing the others, and is displayed last. */ | |
| 372 | |
| 373 void | |
| 374 timevar_print (FILE *fp) | |
| 375 { | |
| 376 /* Only print stuff if we have some sort of time information. */ | |
| 377 #if defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME) || defined (HAVE_WALL_TIME) | |
| 378 unsigned int /* timevar_id_t */ id; | |
| 379 struct timevar_time_def *total = &timevars[TV_TOTAL].elapsed; | |
| 380 struct timevar_time_def now; | |
| 381 | |
| 382 if (!timevar_enable) | |
| 383 return; | |
| 384 | |
| 385 /* Update timing information in case we're calling this from GDB. */ | |
| 386 | |
| 387 if (fp == 0) | |
| 388 fp = stderr; | |
| 389 | |
| 390 /* What time is it? */ | |
| 391 get_time (&now); | |
| 392 | |
| 393 /* If the stack isn't empty, attribute the current elapsed time to | |
| 394 the old topmost element. */ | |
| 395 if (stack) | |
| 396 timevar_accumulate (&stack->timevar->elapsed, &start_time, &now); | |
| 397 | |
| 398 /* Reset the start time; from now on, time is attributed to | |
| 399 TIMEVAR. */ | |
| 400 start_time = now; | |
| 401 | |
|
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402 fputs ("\nExecution times (seconds)\n", fp); |
| 0 | 403 for (id = 0; id < (unsigned int) TIMEVAR_LAST; ++id) |
| 404 { | |
| 405 struct timevar_def *tv = &timevars[(timevar_id_t) id]; | |
| 406 const double tiny = 5e-3; | |
| 407 | |
| 408 /* Don't print the total execution time here; that goes at the | |
| 409 end. */ | |
| 410 if ((timevar_id_t) id == TV_TOTAL) | |
| 411 continue; | |
| 412 | |
| 413 /* Don't print timing variables that were never used. */ | |
| 414 if (!tv->used) | |
| 415 continue; | |
| 416 | |
| 417 /* Don't print timing variables if we're going to get a row of | |
| 418 zeroes. */ | |
| 419 if (tv->elapsed.user < tiny | |
| 420 && tv->elapsed.sys < tiny | |
| 421 && tv->elapsed.wall < tiny | |
| 422 && tv->elapsed.ggc_mem < GGC_MEM_BOUND) | |
| 423 continue; | |
| 424 | |
| 425 /* The timing variable name. */ | |
| 426 fprintf (fp, " %-22s:", tv->name); | |
| 427 | |
| 428 #ifdef HAVE_USER_TIME | |
| 429 /* Print user-mode time for this process. */ | |
| 430 fprintf (fp, "%7.2f (%2.0f%%) usr", | |
| 431 tv->elapsed.user, | |
| 432 (total->user == 0 ? 0 : tv->elapsed.user / total->user) * 100); | |
| 433 #endif /* HAVE_USER_TIME */ | |
| 434 | |
| 435 #ifdef HAVE_SYS_TIME | |
| 436 /* Print system-mode time for this process. */ | |
| 437 fprintf (fp, "%7.2f (%2.0f%%) sys", | |
| 438 tv->elapsed.sys, | |
| 439 (total->sys == 0 ? 0 : tv->elapsed.sys / total->sys) * 100); | |
| 440 #endif /* HAVE_SYS_TIME */ | |
| 441 | |
| 442 #ifdef HAVE_WALL_TIME | |
| 443 /* Print wall clock time elapsed. */ | |
| 444 fprintf (fp, "%7.2f (%2.0f%%) wall", | |
| 445 tv->elapsed.wall, | |
| 446 (total->wall == 0 ? 0 : tv->elapsed.wall / total->wall) * 100); | |
| 447 #endif /* HAVE_WALL_TIME */ | |
| 448 | |
| 449 /* Print the amount of ggc memory allocated. */ | |
| 450 fprintf (fp, "%8u kB (%2.0f%%) ggc", | |
| 451 (unsigned) (tv->elapsed.ggc_mem >> 10), | |
| 452 (total->ggc_mem == 0 | |
| 453 ? 0 | |
| 454 : (float) tv->elapsed.ggc_mem / total->ggc_mem) * 100); | |
| 455 | |
| 456 putc ('\n', fp); | |
| 457 } | |
| 458 | |
| 459 /* Print total time. */ | |
|
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460 fputs (" TOTAL :", fp); |
| 0 | 461 #ifdef HAVE_USER_TIME |
| 462 fprintf (fp, "%7.2f ", total->user); | |
| 463 #endif | |
| 464 #ifdef HAVE_SYS_TIME | |
| 465 fprintf (fp, "%7.2f ", total->sys); | |
| 466 #endif | |
| 467 #ifdef HAVE_WALL_TIME | |
| 468 fprintf (fp, "%7.2f ", total->wall); | |
| 469 #endif | |
| 470 fprintf (fp, "%8u kB\n", (unsigned) (total->ggc_mem >> 10)); | |
| 471 | |
| 472 #ifdef ENABLE_CHECKING | |
| 473 fprintf (fp, "Extra diagnostic checks enabled; compiler may run slowly.\n"); | |
| 474 fprintf (fp, "Configure with --enable-checking=release to disable checks.\n"); | |
| 475 #endif | |
| 476 #ifndef ENABLE_ASSERT_CHECKING | |
| 477 fprintf (fp, "Internal checks disabled; compiler is not suited for release.\n"); | |
| 478 fprintf (fp, "Configure with --enable-checking=release to enable checks.\n"); | |
| 479 #endif | |
| 480 | |
| 481 #endif /* defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME) | |
| 482 || defined (HAVE_WALL_TIME) */ | |
| 483 } | |
| 484 | |
| 485 /* Prints a message to stderr stating that time elapsed in STR is | |
| 486 TOTAL (given in microseconds). */ | |
| 487 | |
| 488 void | |
| 489 print_time (const char *str, long total) | |
| 490 { | |
| 491 long all_time = get_run_time (); | |
| 492 fprintf (stderr, | |
|
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493 "time in %s: %ld.%06ld (%ld%%)\n", |
| 0 | 494 str, total / 1000000, total % 1000000, |
| 495 all_time == 0 ? 0 | |
| 496 : (long) (((100.0 * (double) total) / (double) all_time) + .5)); | |
| 497 } |