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748086b7 | 1 | /* Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
953ff289 DN |
2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
4 | This file is part of the GNU OpenMP Library (libgomp). | |
5 | ||
6 | Libgomp is free software; you can redistribute it and/or modify it | |
748086b7 JJ |
7 | under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
953ff289 DN |
10 | |
11 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
748086b7 | 13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
953ff289 DN |
14 | more details. |
15 | ||
748086b7 JJ |
16 | Under Section 7 of GPL version 3, you are granted additional |
17 | permissions described in the GCC Runtime Library Exception, version | |
18 | 3.1, as published by the Free Software Foundation. | |
953ff289 | 19 | |
748086b7 JJ |
20 | You should have received a copy of the GNU General Public License and |
21 | a copy of the GCC Runtime Library Exception along with this program; | |
22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | <http://www.gnu.org/licenses/>. */ | |
953ff289 DN |
24 | |
25 | /* This file defines the OpenMP internal control variables, and arranges | |
26 | for them to be initialized from environment variables at startup. */ | |
27 | ||
28 | #include "libgomp.h" | |
29 | #include "libgomp_f.h" | |
89b3e3cd | 30 | #include <ctype.h> |
953ff289 | 31 | #include <stdlib.h> |
a1b25e49 PG |
32 | #ifdef STRING_WITH_STRINGS |
33 | # include <string.h> | |
34 | # include <strings.h> | |
35 | #else | |
36 | # ifdef HAVE_STRING_H | |
37 | # include <string.h> | |
38 | # else | |
39 | # ifdef HAVE_STRINGS_H | |
40 | # include <strings.h> | |
41 | # endif | |
42 | # endif | |
43 | #endif | |
d0d1b24d RH |
44 | #include <limits.h> |
45 | #include <errno.h> | |
953ff289 | 46 | |
976e44e3 JJ |
47 | #ifndef HAVE_STRTOULL |
48 | # define strtoull(ptr, eptr, base) strtoul (ptr, eptr, base) | |
49 | #endif | |
953ff289 | 50 | |
a68ab351 JJ |
51 | struct gomp_task_icv gomp_global_icv = { |
52 | .nthreads_var = 1, | |
53 | .run_sched_var = GFS_DYNAMIC, | |
54 | .run_sched_modifier = 1, | |
55 | .dyn_var = false, | |
56 | .nest_var = false | |
57 | }; | |
58 | ||
a0884cf0 JJ |
59 | unsigned short *gomp_cpu_affinity; |
60 | size_t gomp_cpu_affinity_len; | |
a68ab351 JJ |
61 | unsigned long gomp_max_active_levels_var = INT_MAX; |
62 | unsigned long gomp_thread_limit_var = ULONG_MAX; | |
63 | unsigned long gomp_remaining_threads_count; | |
64 | #ifndef HAVE_SYNC_BUILTINS | |
65 | gomp_mutex_t gomp_remaining_threads_lock; | |
66 | #endif | |
67 | unsigned long gomp_available_cpus = 1, gomp_managed_threads = 1; | |
68 | unsigned long long gomp_spin_count_var, gomp_throttled_spin_count_var; | |
953ff289 DN |
69 | |
70 | /* Parse the OMP_SCHEDULE environment variable. */ | |
71 | ||
72 | static void | |
73 | parse_schedule (void) | |
74 | { | |
75 | char *env, *end; | |
6acf0b38 | 76 | unsigned long value; |
953ff289 DN |
77 | |
78 | env = getenv ("OMP_SCHEDULE"); | |
79 | if (env == NULL) | |
80 | return; | |
81 | ||
89b3e3cd JJ |
82 | while (isspace ((unsigned char) *env)) |
83 | ++env; | |
84 | if (strncasecmp (env, "static", 6) == 0) | |
953ff289 | 85 | { |
a68ab351 | 86 | gomp_global_icv.run_sched_var = GFS_STATIC; |
953ff289 DN |
87 | env += 6; |
88 | } | |
89b3e3cd | 89 | else if (strncasecmp (env, "dynamic", 7) == 0) |
953ff289 | 90 | { |
a68ab351 | 91 | gomp_global_icv.run_sched_var = GFS_DYNAMIC; |
953ff289 DN |
92 | env += 7; |
93 | } | |
89b3e3cd | 94 | else if (strncasecmp (env, "guided", 6) == 0) |
953ff289 | 95 | { |
a68ab351 | 96 | gomp_global_icv.run_sched_var = GFS_GUIDED; |
953ff289 DN |
97 | env += 6; |
98 | } | |
a68ab351 JJ |
99 | else if (strncasecmp (env, "auto", 4) == 0) |
100 | { | |
101 | gomp_global_icv.run_sched_var = GFS_AUTO; | |
102 | env += 4; | |
103 | } | |
953ff289 DN |
104 | else |
105 | goto unknown; | |
106 | ||
89b3e3cd JJ |
107 | while (isspace ((unsigned char) *env)) |
108 | ++env; | |
953ff289 DN |
109 | if (*env == '\0') |
110 | return; | |
89b3e3cd | 111 | if (*env++ != ',') |
953ff289 | 112 | goto unknown; |
89b3e3cd JJ |
113 | while (isspace ((unsigned char) *env)) |
114 | ++env; | |
953ff289 | 115 | if (*env == '\0') |
953ff289 DN |
116 | goto invalid; |
117 | ||
6acf0b38 UB |
118 | errno = 0; |
119 | value = strtoul (env, &end, 10); | |
120 | if (errno) | |
121 | goto invalid; | |
122 | ||
89b3e3cd JJ |
123 | while (isspace ((unsigned char) *end)) |
124 | ++end; | |
953ff289 DN |
125 | if (*end != '\0') |
126 | goto invalid; | |
6acf0b38 | 127 | |
a68ab351 JJ |
128 | if ((int)value != value) |
129 | goto invalid; | |
130 | ||
131 | gomp_global_icv.run_sched_modifier = value; | |
953ff289 DN |
132 | return; |
133 | ||
134 | unknown: | |
135 | gomp_error ("Unknown value for environment variable OMP_SCHEDULE"); | |
136 | return; | |
137 | ||
138 | invalid: | |
139 | gomp_error ("Invalid value for chunk size in " | |
140 | "environment variable OMP_SCHEDULE"); | |
953ff289 DN |
141 | return; |
142 | } | |
143 | ||
a68ab351 | 144 | /* Parse an unsigned long environment variable. Return true if one was |
953ff289 DN |
145 | present and it was successfully parsed. */ |
146 | ||
147 | static bool | |
d0d1b24d | 148 | parse_unsigned_long (const char *name, unsigned long *pvalue) |
953ff289 DN |
149 | { |
150 | char *env, *end; | |
d0d1b24d | 151 | unsigned long value; |
953ff289 | 152 | |
d0d1b24d | 153 | env = getenv (name); |
953ff289 DN |
154 | if (env == NULL) |
155 | return false; | |
156 | ||
89b3e3cd JJ |
157 | while (isspace ((unsigned char) *env)) |
158 | ++env; | |
953ff289 DN |
159 | if (*env == '\0') |
160 | goto invalid; | |
161 | ||
6acf0b38 | 162 | errno = 0; |
d0d1b24d | 163 | value = strtoul (env, &end, 10); |
6acf0b38 UB |
164 | if (errno || (long) value <= 0) |
165 | goto invalid; | |
166 | ||
89b3e3cd JJ |
167 | while (isspace ((unsigned char) *end)) |
168 | ++end; | |
953ff289 DN |
169 | if (*end != '\0') |
170 | goto invalid; | |
d0d1b24d RH |
171 | |
172 | *pvalue = value; | |
953ff289 DN |
173 | return true; |
174 | ||
175 | invalid: | |
d0d1b24d | 176 | gomp_error ("Invalid value for environment variable %s", name); |
953ff289 DN |
177 | return false; |
178 | } | |
179 | ||
a68ab351 JJ |
180 | /* Parse the OMP_STACKSIZE environment varible. Return true if one was |
181 | present and it was successfully parsed. */ | |
182 | ||
183 | static bool | |
184 | parse_stacksize (const char *name, unsigned long *pvalue) | |
185 | { | |
186 | char *env, *end; | |
187 | unsigned long value, shift = 10; | |
188 | ||
189 | env = getenv (name); | |
190 | if (env == NULL) | |
191 | return false; | |
192 | ||
193 | while (isspace ((unsigned char) *env)) | |
194 | ++env; | |
195 | if (*env == '\0') | |
196 | goto invalid; | |
197 | ||
198 | errno = 0; | |
199 | value = strtoul (env, &end, 10); | |
200 | if (errno) | |
201 | goto invalid; | |
202 | ||
203 | while (isspace ((unsigned char) *end)) | |
204 | ++end; | |
205 | if (*end != '\0') | |
206 | { | |
323ff903 | 207 | switch (tolower ((unsigned char) *end)) |
a68ab351 JJ |
208 | { |
209 | case 'b': | |
210 | shift = 0; | |
211 | break; | |
212 | case 'k': | |
213 | break; | |
214 | case 'm': | |
215 | shift = 20; | |
216 | break; | |
217 | case 'g': | |
218 | shift = 30; | |
219 | break; | |
220 | default: | |
221 | goto invalid; | |
222 | } | |
223 | ++end; | |
224 | while (isspace ((unsigned char) *end)) | |
225 | ++end; | |
226 | if (*end != '\0') | |
227 | goto invalid; | |
228 | } | |
229 | ||
230 | if (((value << shift) >> shift) != value) | |
231 | goto invalid; | |
232 | ||
233 | *pvalue = value << shift; | |
234 | return true; | |
235 | ||
236 | invalid: | |
237 | gomp_error ("Invalid value for environment variable %s", name); | |
238 | return false; | |
239 | } | |
240 | ||
241 | /* Parse the GOMP_SPINCOUNT environment varible. Return true if one was | |
242 | present and it was successfully parsed. */ | |
243 | ||
244 | static bool | |
245 | parse_spincount (const char *name, unsigned long long *pvalue) | |
246 | { | |
247 | char *env, *end; | |
248 | unsigned long long value, mult = 1; | |
249 | ||
250 | env = getenv (name); | |
251 | if (env == NULL) | |
252 | return false; | |
253 | ||
254 | while (isspace ((unsigned char) *env)) | |
255 | ++env; | |
256 | if (*env == '\0') | |
257 | goto invalid; | |
258 | ||
259 | if (strncasecmp (env, "infinite", 8) == 0 | |
260 | || strncasecmp (env, "infinity", 8) == 0) | |
261 | { | |
262 | value = ~0ULL; | |
263 | end = env + 8; | |
264 | goto check_tail; | |
265 | } | |
266 | ||
267 | errno = 0; | |
268 | value = strtoull (env, &end, 10); | |
269 | if (errno) | |
270 | goto invalid; | |
271 | ||
272 | while (isspace ((unsigned char) *end)) | |
273 | ++end; | |
274 | if (*end != '\0') | |
275 | { | |
323ff903 | 276 | switch (tolower ((unsigned char) *end)) |
a68ab351 JJ |
277 | { |
278 | case 'k': | |
279 | mult = 1000LL; | |
280 | break; | |
281 | case 'm': | |
282 | mult = 1000LL * 1000LL; | |
283 | break; | |
284 | case 'g': | |
285 | mult = 1000LL * 1000LL * 1000LL; | |
286 | break; | |
287 | case 't': | |
288 | mult = 1000LL * 1000LL * 1000LL * 1000LL; | |
289 | break; | |
290 | default: | |
291 | goto invalid; | |
292 | } | |
293 | ++end; | |
294 | check_tail: | |
295 | while (isspace ((unsigned char) *end)) | |
296 | ++end; | |
297 | if (*end != '\0') | |
298 | goto invalid; | |
299 | } | |
300 | ||
301 | if (value > ~0ULL / mult) | |
302 | value = ~0ULL; | |
303 | else | |
304 | value *= mult; | |
305 | ||
306 | *pvalue = value; | |
307 | return true; | |
308 | ||
309 | invalid: | |
310 | gomp_error ("Invalid value for environment variable %s", name); | |
311 | return false; | |
312 | } | |
313 | ||
314 | /* Parse a boolean value for environment variable NAME and store the | |
953ff289 DN |
315 | result in VALUE. */ |
316 | ||
317 | static void | |
318 | parse_boolean (const char *name, bool *value) | |
319 | { | |
320 | const char *env; | |
321 | ||
322 | env = getenv (name); | |
323 | if (env == NULL) | |
324 | return; | |
325 | ||
89b3e3cd JJ |
326 | while (isspace ((unsigned char) *env)) |
327 | ++env; | |
328 | if (strncasecmp (env, "true", 4) == 0) | |
329 | { | |
330 | *value = true; | |
331 | env += 4; | |
332 | } | |
333 | else if (strncasecmp (env, "false", 5) == 0) | |
334 | { | |
335 | *value = false; | |
336 | env += 5; | |
337 | } | |
953ff289 | 338 | else |
89b3e3cd JJ |
339 | env = "X"; |
340 | while (isspace ((unsigned char) *env)) | |
341 | ++env; | |
342 | if (*env != '\0') | |
d0d1b24d | 343 | gomp_error ("Invalid value for environment variable %s", name); |
953ff289 DN |
344 | } |
345 | ||
a68ab351 JJ |
346 | /* Parse the OMP_WAIT_POLICY environment variable and store the |
347 | result in gomp_active_wait_policy. */ | |
348 | ||
349 | static int | |
350 | parse_wait_policy (void) | |
351 | { | |
352 | const char *env; | |
353 | int ret = -1; | |
354 | ||
355 | env = getenv ("OMP_WAIT_POLICY"); | |
356 | if (env == NULL) | |
357 | return -1; | |
358 | ||
359 | while (isspace ((unsigned char) *env)) | |
360 | ++env; | |
361 | if (strncasecmp (env, "active", 6) == 0) | |
362 | { | |
363 | ret = 1; | |
364 | env += 6; | |
365 | } | |
366 | else if (strncasecmp (env, "passive", 7) == 0) | |
367 | { | |
368 | ret = 0; | |
369 | env += 7; | |
370 | } | |
371 | else | |
372 | env = "X"; | |
373 | while (isspace ((unsigned char) *env)) | |
374 | ++env; | |
375 | if (*env == '\0') | |
376 | return ret; | |
377 | gomp_error ("Invalid value for environment variable OMP_WAIT_POLICY"); | |
378 | return -1; | |
379 | } | |
380 | ||
a0884cf0 JJ |
381 | /* Parse the GOMP_CPU_AFFINITY environment varible. Return true if one was |
382 | present and it was successfully parsed. */ | |
383 | ||
384 | static bool | |
385 | parse_affinity (void) | |
386 | { | |
387 | char *env, *end; | |
388 | unsigned long cpu_beg, cpu_end, cpu_stride; | |
389 | unsigned short *cpus = NULL; | |
390 | size_t allocated = 0, used = 0, needed; | |
391 | ||
392 | env = getenv ("GOMP_CPU_AFFINITY"); | |
393 | if (env == NULL) | |
394 | return false; | |
395 | ||
396 | do | |
397 | { | |
398 | while (*env == ' ' || *env == '\t') | |
399 | env++; | |
400 | ||
401 | cpu_beg = strtoul (env, &end, 0); | |
402 | cpu_end = cpu_beg; | |
403 | cpu_stride = 1; | |
404 | if (env == end || cpu_beg >= 65536) | |
405 | goto invalid; | |
406 | ||
407 | env = end; | |
408 | if (*env == '-') | |
409 | { | |
410 | cpu_end = strtoul (++env, &end, 0); | |
411 | if (env == end || cpu_end >= 65536 || cpu_end < cpu_beg) | |
412 | goto invalid; | |
413 | ||
414 | env = end; | |
415 | if (*env == ':') | |
416 | { | |
417 | cpu_stride = strtoul (++env, &end, 0); | |
418 | if (env == end || cpu_stride == 0 || cpu_stride >= 65536) | |
419 | goto invalid; | |
420 | ||
421 | env = end; | |
422 | } | |
423 | } | |
424 | ||
425 | needed = (cpu_end - cpu_beg) / cpu_stride + 1; | |
426 | if (used + needed >= allocated) | |
427 | { | |
428 | unsigned short *new_cpus; | |
429 | ||
430 | if (allocated < 64) | |
431 | allocated = 64; | |
432 | if (allocated > needed) | |
433 | allocated <<= 1; | |
434 | else | |
435 | allocated += 2 * needed; | |
436 | new_cpus = realloc (cpus, allocated * sizeof (unsigned short)); | |
437 | if (new_cpus == NULL) | |
438 | { | |
439 | free (cpus); | |
440 | gomp_error ("not enough memory to store GOMP_CPU_AFFINITY list"); | |
441 | return false; | |
442 | } | |
443 | ||
444 | cpus = new_cpus; | |
445 | } | |
446 | ||
447 | while (needed--) | |
448 | { | |
449 | cpus[used++] = cpu_beg; | |
450 | cpu_beg += cpu_stride; | |
451 | } | |
452 | ||
453 | while (*env == ' ' || *env == '\t') | |
454 | env++; | |
455 | ||
456 | if (*env == ',') | |
457 | env++; | |
458 | else if (*env == '\0') | |
459 | break; | |
460 | } | |
461 | while (1); | |
462 | ||
463 | gomp_cpu_affinity = cpus; | |
464 | gomp_cpu_affinity_len = used; | |
465 | return true; | |
466 | ||
467 | invalid: | |
468 | gomp_error ("Invalid value for enviroment variable GOMP_CPU_AFFINITY"); | |
469 | return false; | |
470 | } | |
471 | ||
953ff289 DN |
472 | static void __attribute__((constructor)) |
473 | initialize_env (void) | |
474 | { | |
d0d1b24d | 475 | unsigned long stacksize; |
a68ab351 | 476 | int wait_policy; |
d0d1b24d | 477 | |
953ff289 DN |
478 | /* Do a compile time check that mkomp_h.pl did good job. */ |
479 | omp_check_defines (); | |
480 | ||
481 | parse_schedule (); | |
a68ab351 JJ |
482 | parse_boolean ("OMP_DYNAMIC", &gomp_global_icv.dyn_var); |
483 | parse_boolean ("OMP_NESTED", &gomp_global_icv.nest_var); | |
484 | parse_unsigned_long ("OMP_MAX_ACTIVE_LEVELS", &gomp_max_active_levels_var); | |
485 | parse_unsigned_long ("OMP_THREAD_LIMIT", &gomp_thread_limit_var); | |
486 | if (gomp_thread_limit_var != ULONG_MAX) | |
9c4e59e0 | 487 | gomp_remaining_threads_count = gomp_thread_limit_var - 1; |
a68ab351 | 488 | #ifndef HAVE_SYNC_BUILTINS |
9c4e59e0 | 489 | gomp_mutex_init (&gomp_remaining_threads_lock); |
a68ab351 | 490 | #endif |
a68ab351 JJ |
491 | gomp_init_num_threads (); |
492 | gomp_available_cpus = gomp_global_icv.nthreads_var; | |
493 | if (!parse_unsigned_long ("OMP_NUM_THREADS", &gomp_global_icv.nthreads_var)) | |
494 | gomp_global_icv.nthreads_var = gomp_available_cpus; | |
a0884cf0 JJ |
495 | if (parse_affinity ()) |
496 | gomp_init_affinity (); | |
a68ab351 JJ |
497 | wait_policy = parse_wait_policy (); |
498 | if (!parse_spincount ("GOMP_SPINCOUNT", &gomp_spin_count_var)) | |
499 | { | |
500 | /* Using a rough estimation of 100000 spins per msec, | |
501 | use 5 min blocking for OMP_WAIT_POLICY=active, | |
502 | 200 msec blocking when OMP_WAIT_POLICY is not specificed | |
503 | and 0 when OMP_WAIT_POLICY=passive. | |
504 | Depending on the CPU speed, this can be e.g. 5 times longer | |
505 | or 5 times shorter. */ | |
506 | if (wait_policy > 0) | |
507 | gomp_spin_count_var = 30000000000LL; | |
508 | else if (wait_policy < 0) | |
509 | gomp_spin_count_var = 20000000LL; | |
510 | } | |
511 | /* gomp_throttled_spin_count_var is used when there are more libgomp | |
512 | managed threads than available CPUs. Use very short spinning. */ | |
513 | if (wait_policy > 0) | |
514 | gomp_throttled_spin_count_var = 1000LL; | |
515 | else if (wait_policy < 0) | |
516 | gomp_throttled_spin_count_var = 100LL; | |
517 | if (gomp_throttled_spin_count_var > gomp_spin_count_var) | |
518 | gomp_throttled_spin_count_var = gomp_spin_count_var; | |
d0d1b24d RH |
519 | |
520 | /* Not strictly environment related, but ordering constructors is tricky. */ | |
521 | pthread_attr_init (&gomp_thread_attr); | |
522 | pthread_attr_setdetachstate (&gomp_thread_attr, PTHREAD_CREATE_DETACHED); | |
523 | ||
a68ab351 JJ |
524 | if (parse_stacksize ("OMP_STACKSIZE", &stacksize) |
525 | || parse_stacksize ("GOMP_STACKSIZE", &stacksize)) | |
d0d1b24d | 526 | { |
c3b11a40 RH |
527 | int err; |
528 | ||
c3b11a40 RH |
529 | err = pthread_attr_setstacksize (&gomp_thread_attr, stacksize); |
530 | ||
531 | #ifdef PTHREAD_STACK_MIN | |
532 | if (err == EINVAL) | |
d0d1b24d | 533 | { |
c3b11a40 RH |
534 | if (stacksize < PTHREAD_STACK_MIN) |
535 | gomp_error ("Stack size less than minimum of %luk", | |
536 | PTHREAD_STACK_MIN / 1024ul | |
537 | + (PTHREAD_STACK_MIN % 1024 != 0)); | |
538 | else | |
d0d1b24d | 539 | gomp_error ("Stack size larger than system limit"); |
d0d1b24d | 540 | } |
c3b11a40 RH |
541 | else |
542 | #endif | |
543 | if (err != 0) | |
544 | gomp_error ("Stack size change failed: %s", strerror (err)); | |
d0d1b24d | 545 | } |
953ff289 DN |
546 | } |
547 | ||
548 | \f | |
549 | /* The public OpenMP API routines that access these variables. */ | |
550 | ||
551 | void | |
552 | omp_set_num_threads (int n) | |
553 | { | |
a68ab351 JJ |
554 | struct gomp_task_icv *icv = gomp_icv (true); |
555 | icv->nthreads_var = (n > 0 ? n : 1); | |
953ff289 DN |
556 | } |
557 | ||
558 | void | |
559 | omp_set_dynamic (int val) | |
560 | { | |
a68ab351 JJ |
561 | struct gomp_task_icv *icv = gomp_icv (true); |
562 | icv->dyn_var = val; | |
953ff289 DN |
563 | } |
564 | ||
565 | int | |
566 | omp_get_dynamic (void) | |
567 | { | |
a68ab351 JJ |
568 | struct gomp_task_icv *icv = gomp_icv (false); |
569 | return icv->dyn_var; | |
953ff289 DN |
570 | } |
571 | ||
572 | void | |
573 | omp_set_nested (int val) | |
574 | { | |
a68ab351 JJ |
575 | struct gomp_task_icv *icv = gomp_icv (true); |
576 | icv->nest_var = val; | |
953ff289 DN |
577 | } |
578 | ||
579 | int | |
580 | omp_get_nested (void) | |
581 | { | |
a68ab351 JJ |
582 | struct gomp_task_icv *icv = gomp_icv (false); |
583 | return icv->nest_var; | |
584 | } | |
585 | ||
586 | void | |
587 | omp_set_schedule (omp_sched_t kind, int modifier) | |
588 | { | |
589 | struct gomp_task_icv *icv = gomp_icv (true); | |
590 | switch (kind) | |
591 | { | |
592 | case omp_sched_static: | |
593 | if (modifier < 1) | |
594 | modifier = 0; | |
595 | icv->run_sched_modifier = modifier; | |
596 | break; | |
597 | case omp_sched_dynamic: | |
598 | case omp_sched_guided: | |
599 | if (modifier < 1) | |
600 | modifier = 1; | |
601 | icv->run_sched_modifier = modifier; | |
602 | break; | |
603 | case omp_sched_auto: | |
604 | break; | |
605 | default: | |
606 | return; | |
607 | } | |
608 | icv->run_sched_var = kind; | |
609 | } | |
610 | ||
611 | void | |
612 | omp_get_schedule (omp_sched_t *kind, int *modifier) | |
613 | { | |
614 | struct gomp_task_icv *icv = gomp_icv (false); | |
615 | *kind = icv->run_sched_var; | |
616 | *modifier = icv->run_sched_modifier; | |
617 | } | |
618 | ||
619 | int | |
620 | omp_get_max_threads (void) | |
621 | { | |
622 | struct gomp_task_icv *icv = gomp_icv (false); | |
623 | return icv->nthreads_var; | |
624 | } | |
625 | ||
626 | int | |
627 | omp_get_thread_limit (void) | |
628 | { | |
629 | return gomp_thread_limit_var > INT_MAX ? INT_MAX : gomp_thread_limit_var; | |
630 | } | |
631 | ||
632 | void | |
633 | omp_set_max_active_levels (int max_levels) | |
634 | { | |
635 | if (max_levels > 0) | |
636 | gomp_max_active_levels_var = max_levels; | |
637 | } | |
638 | ||
639 | int | |
640 | omp_get_max_active_levels (void) | |
641 | { | |
642 | return gomp_max_active_levels_var; | |
953ff289 DN |
643 | } |
644 | ||
645 | ialias (omp_set_dynamic) | |
646 | ialias (omp_set_nested) | |
647 | ialias (omp_set_num_threads) | |
648 | ialias (omp_get_dynamic) | |
649 | ialias (omp_get_nested) | |
a68ab351 JJ |
650 | ialias (omp_set_schedule) |
651 | ialias (omp_get_schedule) | |
652 | ialias (omp_get_max_threads) | |
653 | ialias (omp_get_thread_limit) | |
654 | ialias (omp_set_max_active_levels) | |
655 | ialias (omp_get_max_active_levels) |