1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
|
/* Timing variables for measuring compiler performance.
Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by Alex Samuel <samuel@codesourcery.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "intl.h"
#include "rtl.h"
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifndef HAVE_CLOCK_T
typedef int clock_t;
#endif
#ifndef HAVE_STRUCT_TMS
struct tms
{
clock_t tms_utime;
clock_t tms_stime;
clock_t tms_cutime;
clock_t tms_cstime;
};
#endif
#if defined HAVE_DECL_GETRUSAGE && !HAVE_DECL_GETRUSAGE
extern int getrusage PARAMS ((int, struct rusage *));
#endif
#if defined HAVE_DECL_TIMES && !HAVE_DECL_TIMES
extern clock_t times PARAMS ((struct tms *));
#endif
#if defined HAVE_DECL_CLOCK && !HAVE_DECL_CLOCK
extern clock_t clock PARAMS ((void));
#endif
#ifndef RUSAGE_SELF
# define RUSAGE_SELF 0
#endif
/* Calculation of scale factor to convert ticks to microseconds.
We mustn't use CLOCKS_PER_SEC except with clock(). */
#if HAVE_SYSCONF && defined _SC_CLK_TCK
# define TICKS_PER_SECOND sysconf (_SC_CLK_TCK) /* POSIX 1003.1-1996 */
#else
# ifdef CLK_TCK
# define TICKS_PER_SECOND CLK_TCK /* POSIX 1003.1-1988; obsolescent */
# else
# ifdef HZ
# define TICKS_PER_SECOND HZ /* traditional UNIX */
# else
# define TICKS_PER_SECOND 100 /* often the correct value */
# endif
# endif
#endif
/* Prefer times to getrusage to clock (each gives successively less
information). */
#ifdef HAVE_TIMES
# define USE_TIMES
# define HAVE_USER_TIME
# define HAVE_SYS_TIME
# define HAVE_WALL_TIME
#else
#ifdef HAVE_GETRUSAGE
# define USE_GETRUSAGE
# define HAVE_USER_TIME
# define HAVE_SYS_TIME
#else
#ifdef HAVE_CLOCK
# define USE_CLOCK
# define HAVE_USER_TIME
#endif
#endif
#endif
/* libc is very likely to have snuck a call to sysconf() into one of
the underlying constants, and that can be very slow, so we have to
precompute them. Whose wonderful idea was it to make all those
_constants_ variable at run time, anyway? */
#ifdef USE_TIMES
static float ticks_to_msec;
#define TICKS_TO_MSEC (1 / (float)TICKS_PER_SECOND)
#endif
#ifdef USE_CLOCK
static float clocks_to_msec;
#define CLOCKS_TO_MSEC (1 / (float)CLOCKS_PER_SEC)
#endif
#include "flags.h"
#include "timevar.h"
/* See timevar.h for an explanation of timing variables. */
/* This macro evaluates to non-zero if timing variables are enabled. */
#define TIMEVAR_ENABLE (time_report)
/* A timing variable. */
struct timevar_def
{
/* Elapsed time for this variable. */
struct timevar_time_def elapsed;
/* If this variable is timed independently of the timing stack,
using timevar_start, this contains the start time. */
struct timevar_time_def start_time;
/* The name of this timing variable. */
const char *name;
/* Non-zero if this timing variable is running as a standalone
timer. */
unsigned standalone : 1;
/* Non-zero if this timing variable was ever started or pushed onto
the timing stack. */
unsigned used : 1;
};
/* An element on the timing stack. Elapsed time is attributed to the
topmost timing variable on the stack. */
struct timevar_stack_def
{
/* The timing variable at this stack level. */
struct timevar_def *timevar;
/* The next lower timing variable context in the stack. */
struct timevar_stack_def *next;
};
/* Declared timing variables. Constructed from the contents of
timevar.def. */
static struct timevar_def timevars[TIMEVAR_LAST];
/* The top of the timing stack. */
static struct timevar_stack_def *stack;
/* A list of unused (i.e. allocated and subsequently popped)
timevar_stack_def instances. */
static struct timevar_stack_def *unused_stack_instances;
/* The time at which the topmost element on the timing stack was
pushed. Time elapsed since then is attributed to the topmost
element. */
static struct timevar_time_def start_time;
static void get_time
PARAMS ((struct timevar_time_def *));
static void timevar_accumulate
PARAMS ((struct timevar_time_def *, struct timevar_time_def *,
struct timevar_time_def *));
/* Fill the current times into TIME. The definition of this function
also defines any or all of the HAVE_USER_TIME, HAVE_SYS_TIME, and
HAVA_WALL_TIME macros. */
static void
get_time (now)
struct timevar_time_def *now;
{
now->user = 0;
now->sys = 0;
now->wall = 0;
if (!TIMEVAR_ENABLE)
return;
{
#ifdef USE_TIMES
struct tms tms;
now->wall = times (&tms) * ticks_to_msec;
now->user = tms.tms_utime * ticks_to_msec;
now->sys = tms.tms_stime * ticks_to_msec;
#endif
#ifdef USE_GETRUSAGE
struct rusage rusage;
getrusage (RUSAGE_SELF, &rusage);
now->user = rusage.ru_utime.tv_sec + rusage.ru_utime.tv_usec * 1e-6;
now->sys = rusage.ru_stime.tv_sec + rusage.ru_stime.tv_usec * 1e-6;
#endif
#ifdef USE_CLOCK
now->user = clock () * clocks_to_msec;
#endif
}
}
/* Add the difference between STOP_TIME and START_TIME to TIMER. */
static void
timevar_accumulate (timer, start_time, stop_time)
struct timevar_time_def *timer;
struct timevar_time_def *start_time;
struct timevar_time_def *stop_time;
{
timer->user += stop_time->user - start_time->user;
timer->sys += stop_time->sys - start_time->sys;
timer->wall += stop_time->wall - start_time->wall;
}
/* Initialize timing variables. */
void
init_timevar ()
{
if (!TIMEVAR_ENABLE)
return;
/* Zero all elapsed times. */
memset ((void *) timevars, 0, sizeof (timevars));
/* Initialize the names of timing variables. */
#define DEFTIMEVAR(identifier__, name__) \
timevars[identifier__].name = name__;
#include "timevar.def"
#undef DEFTIMEVAR
#ifdef USE_TIMES
ticks_to_msec = TICKS_TO_MSEC;
#endif
#ifdef USE_CLOCK
clocks_to_msec = CLOCKS_TO_MSEC;
#endif
}
/* Push TIMEVAR onto the timing stack. No further elapsed time is
attributed to the previous topmost timing variable on the stack;
subsequent elapsed time is attributed to TIMEVAR, until it is
popped or another element is pushed on top.
TIMEVAR cannot be running as a standalone timer. */
void
timevar_push (timevar)
timevar_id_t timevar;
{
struct timevar_def *tv = &timevars[timevar];
struct timevar_stack_def *context;
struct timevar_time_def now;
if (!TIMEVAR_ENABLE)
return;
/* Mark this timing variable as used. */
tv->used = 1;
/* Can't push a standalone timer. */
if (tv->standalone)
abort ();
/* What time is it? */
get_time (&now);
/* If the stack isn't empty, attribute the current elapsed time to
the old topmost element. */
if (stack)
timevar_accumulate (&stack->timevar->elapsed, &start_time, &now);
/* Reset the start time; from now on, time is attributed to
TIMEVAR. */
start_time = now;
/* See if we have a previously-allocated stack instance. If so,
take it off the list. If not, malloc a new one. */
if (unused_stack_instances != NULL)
{
context = unused_stack_instances;
unused_stack_instances = unused_stack_instances->next;
}
else
context = (struct timevar_stack_def *)
xmalloc (sizeof (struct timevar_stack_def));
/* Fill it in and put it on the stack. */
context->timevar = tv;
context->next = stack;
stack = context;
}
/* Pop the topmost timing variable element off the timing stack. The
popped variable must be TIMEVAR. Elapsed time since the that
element was pushed on, or since it was last exposed on top of the
stack when the element above it was popped off, is credited to that
timing variable. */
void
timevar_pop (timevar)
timevar_id_t timevar;
{
struct timevar_time_def now;
struct timevar_stack_def *popped = stack;
if (!TIMEVAR_ENABLE)
return;
if (&timevars[timevar] != stack->timevar)
abort ();
/* What time is it? */
get_time (&now);
/* Attribute the elapsed time to the element we're popping. */
timevar_accumulate (&popped->timevar->elapsed, &start_time, &now);
/* Reset the start time; from now on, time is attributed to the
element just exposed on the stack. */
start_time = now;
/* Take the item off the stack. */
stack = stack->next;
/* Don't delete the stack element; instead, add it to the list of
unused elements for later use. */
popped->next = unused_stack_instances;
unused_stack_instances = popped;
}
/* Start timing TIMEVAR independently of the timing stack. Elapsed
time until timevar_stop is called for the same timing variable is
attributed to TIMEVAR. */
void
timevar_start (timevar)
timevar_id_t timevar;
{
struct timevar_def *tv = &timevars[timevar];
if (!TIMEVAR_ENABLE)
return;
/* Mark this timing variable as used. */
tv->used = 1;
/* Don't allow the same timing variable to be started more than
once. */
if (tv->standalone)
abort ();
tv->standalone = 1;
get_time (&tv->start_time);
}
/* Stop timing TIMEVAR. Time elapsed since timevar_start was called
is attributed to it. */
void
timevar_stop (timevar)
timevar_id_t timevar;
{
struct timevar_def *tv = &timevars[timevar];
struct timevar_time_def now;
if (!TIMEVAR_ENABLE)
return;
/* TIMEVAR must have been started via timevar_start. */
if (!tv->standalone)
abort ();
get_time (&now);
timevar_accumulate (&tv->elapsed, &tv->start_time, &now);
}
/* Fill the elapsed time for TIMEVAR into ELAPSED. Returns
update-to-date information even if TIMEVAR is currently running. */
void
timevar_get (timevar, elapsed)
timevar_id_t timevar;
struct timevar_time_def *elapsed;
{
struct timevar_def *tv = &timevars[timevar];
struct timevar_time_def now;
*elapsed = tv->elapsed;
/* Is TIMEVAR currently running as a standalone timer? */
if (tv->standalone)
{
get_time (&now);
timevar_accumulate (elapsed, &tv->start_time, &now);
}
/* Or is TIMEVAR at the top of the timer stack? */
else if (stack->timevar == tv)
{
get_time (&now);
timevar_accumulate (elapsed, &start_time, &now);
}
}
/* Summarize timing variables to FP. The timing variable TV_TOTAL has
a special meaning -- it's considered to be the total elapsed time,
for normalizing the others, and is displayed last. */
void
timevar_print (fp)
FILE *fp;
{
/* Only print stuff if we have some sort of time information. */
#if defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME) || defined (HAVE_WALL_TIME)
unsigned int /* timevar_id_t */ id;
struct timevar_time_def *total = &timevars[TV_TOTAL].elapsed;
struct timevar_time_def now;
if (!TIMEVAR_ENABLE)
return;
/* Update timing information in case we're calling this from GDB. */
if (fp == 0)
fp = stderr;
/* What time is it? */
get_time (&now);
/* If the stack isn't empty, attribute the current elapsed time to
the old topmost element. */
if (stack)
timevar_accumulate (&stack->timevar->elapsed, &start_time, &now);
/* Reset the start time; from now on, time is attributed to
TIMEVAR. */
start_time = now;
fputs (_("\nExecution times (seconds)\n"), fp);
for (id = 0; id < (unsigned int) TIMEVAR_LAST; ++id)
{
struct timevar_def *tv = &timevars[(timevar_id_t) id];
const float tiny = 5e-3;
/* Don't print the total execution time here; that goes at the
end. */
if ((timevar_id_t) id == TV_TOTAL)
continue;
/* Don't print timing variables that were never used. */
if (!tv->used)
continue;
/* Don't print timing variables if we're going to get a row of
zeroes. */
if (tv->elapsed.user < tiny
&& tv->elapsed.sys < tiny
&& tv->elapsed.wall < tiny)
continue;
/* The timing variable name. */
fprintf (fp, " %-22s:", tv->name);
#ifdef HAVE_USER_TIME
/* Print user-mode time for this process. */
fprintf (fp, "%7.2f (%2.0f%%) usr",
tv->elapsed.user,
(total->user == 0 ? 0 : tv->elapsed.user / total->user) * 100);
#endif /* HAVE_USER_TIME */
#ifdef HAVE_SYS_TIME
/* Print system-mode time for this process. */
fprintf (fp, "%7.2f (%2.0f%%) sys",
tv->elapsed.sys,
(total->sys == 0 ? 0 : tv->elapsed.sys / total->sys) * 100);
#endif /* HAVE_SYS_TIME */
#ifdef HAVE_WALL_TIME
/* Print wall clock time elapsed. */
fprintf (fp, "%7.2f (%2.0f%%) wall",
tv->elapsed.wall,
(total->wall == 0 ? 0 : tv->elapsed.wall / total->wall) * 100);
#endif /* HAVE_WALL_TIME */
putc ('\n', fp);
}
/* Print total time. */
fputs (_(" TOTAL :"), fp);
#ifdef HAVE_USER_TIME
fprintf (fp, "%7.2f ", total->user);
#endif
#ifdef HAVE_SYS_TIME
fprintf (fp, "%7.2f ", total->sys);
#endif
#ifdef HAVE_WALL_TIME
fprintf (fp, "%7.2f\n", total->wall);
#endif
#endif /* defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME)
|| defined (HAVE_WALL_TIME) */
}
/* Returns time (user + system) used so far by the compiler process,
in microseconds. */
long
get_run_time ()
{
struct timevar_time_def total_elapsed;
timevar_get (TV_TOTAL, &total_elapsed);
return total_elapsed.user + total_elapsed.sys;
}
/* Prints a message to stderr stating that time elapsed in STR is
TOTAL (given in microseconds). */
void
print_time (str, total)
const char *str;
long total;
{
long all_time = get_run_time ();
fprintf (stderr,
_("time in %s: %ld.%06ld (%ld%%)\n"),
str, total / 1000000, total % 1000000,
all_time == 0 ? 0
: (long) (((100.0 * (double) total) / (double) all_time) + .5));
}
|