]>
Commit | Line | Data |
---|---|---|
5624e564 | 1 | /* Copyright (C) 2005-2015 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> |
acf0174b JJ |
32 | #include <stdio.h> |
33 | #ifdef HAVE_INTTYPES_H | |
34 | # include <inttypes.h> /* For PRIu64. */ | |
35 | #endif | |
a1b25e49 PG |
36 | #ifdef STRING_WITH_STRINGS |
37 | # include <string.h> | |
38 | # include <strings.h> | |
39 | #else | |
40 | # ifdef HAVE_STRING_H | |
41 | # include <string.h> | |
42 | # else | |
43 | # ifdef HAVE_STRINGS_H | |
44 | # include <strings.h> | |
45 | # endif | |
46 | # endif | |
47 | #endif | |
d0d1b24d RH |
48 | #include <limits.h> |
49 | #include <errno.h> | |
953ff289 | 50 | |
976e44e3 JJ |
51 | #ifndef HAVE_STRTOULL |
52 | # define strtoull(ptr, eptr, base) strtoul (ptr, eptr, base) | |
53 | #endif | |
953ff289 | 54 | |
a68ab351 JJ |
55 | struct gomp_task_icv gomp_global_icv = { |
56 | .nthreads_var = 1, | |
acf0174b | 57 | .thread_limit_var = UINT_MAX, |
a68ab351 JJ |
58 | .run_sched_var = GFS_DYNAMIC, |
59 | .run_sched_modifier = 1, | |
acf0174b | 60 | .default_device_var = 0, |
a68ab351 | 61 | .dyn_var = false, |
acf0174b JJ |
62 | .nest_var = false, |
63 | .bind_var = omp_proc_bind_false, | |
64 | .target_data = NULL | |
a68ab351 JJ |
65 | }; |
66 | ||
a68ab351 | 67 | unsigned long gomp_max_active_levels_var = INT_MAX; |
acf0174b | 68 | bool gomp_cancel_var = false; |
a68ab351 | 69 | #ifndef HAVE_SYNC_BUILTINS |
acf0174b | 70 | gomp_mutex_t gomp_managed_threads_lock; |
a68ab351 JJ |
71 | #endif |
72 | unsigned long gomp_available_cpus = 1, gomp_managed_threads = 1; | |
73 | unsigned long long gomp_spin_count_var, gomp_throttled_spin_count_var; | |
20906c66 | 74 | unsigned long *gomp_nthreads_var_list, gomp_nthreads_var_list_len; |
acf0174b JJ |
75 | char *gomp_bind_var_list; |
76 | unsigned long gomp_bind_var_list_len; | |
77 | void **gomp_places_list; | |
78 | unsigned long gomp_places_list_len; | |
953ff289 DN |
79 | |
80 | /* Parse the OMP_SCHEDULE environment variable. */ | |
81 | ||
82 | static void | |
83 | parse_schedule (void) | |
84 | { | |
85 | char *env, *end; | |
6acf0b38 | 86 | unsigned long value; |
953ff289 DN |
87 | |
88 | env = getenv ("OMP_SCHEDULE"); | |
89 | if (env == NULL) | |
90 | return; | |
91 | ||
89b3e3cd JJ |
92 | while (isspace ((unsigned char) *env)) |
93 | ++env; | |
94 | if (strncasecmp (env, "static", 6) == 0) | |
953ff289 | 95 | { |
a68ab351 | 96 | gomp_global_icv.run_sched_var = GFS_STATIC; |
953ff289 DN |
97 | env += 6; |
98 | } | |
89b3e3cd | 99 | else if (strncasecmp (env, "dynamic", 7) == 0) |
953ff289 | 100 | { |
a68ab351 | 101 | gomp_global_icv.run_sched_var = GFS_DYNAMIC; |
953ff289 DN |
102 | env += 7; |
103 | } | |
89b3e3cd | 104 | else if (strncasecmp (env, "guided", 6) == 0) |
953ff289 | 105 | { |
a68ab351 | 106 | gomp_global_icv.run_sched_var = GFS_GUIDED; |
953ff289 DN |
107 | env += 6; |
108 | } | |
a68ab351 JJ |
109 | else if (strncasecmp (env, "auto", 4) == 0) |
110 | { | |
111 | gomp_global_icv.run_sched_var = GFS_AUTO; | |
112 | env += 4; | |
113 | } | |
953ff289 DN |
114 | else |
115 | goto unknown; | |
116 | ||
89b3e3cd JJ |
117 | while (isspace ((unsigned char) *env)) |
118 | ++env; | |
953ff289 | 119 | if (*env == '\0') |
fb79f500 JJ |
120 | { |
121 | gomp_global_icv.run_sched_modifier | |
122 | = gomp_global_icv.run_sched_var != GFS_STATIC; | |
123 | return; | |
124 | } | |
89b3e3cd | 125 | if (*env++ != ',') |
953ff289 | 126 | goto unknown; |
89b3e3cd JJ |
127 | while (isspace ((unsigned char) *env)) |
128 | ++env; | |
953ff289 | 129 | if (*env == '\0') |
953ff289 DN |
130 | goto invalid; |
131 | ||
6acf0b38 UB |
132 | errno = 0; |
133 | value = strtoul (env, &end, 10); | |
134 | if (errno) | |
135 | goto invalid; | |
136 | ||
89b3e3cd JJ |
137 | while (isspace ((unsigned char) *end)) |
138 | ++end; | |
953ff289 DN |
139 | if (*end != '\0') |
140 | goto invalid; | |
6acf0b38 | 141 | |
a68ab351 JJ |
142 | if ((int)value != value) |
143 | goto invalid; | |
144 | ||
fb79f500 JJ |
145 | if (value == 0 && gomp_global_icv.run_sched_var != GFS_STATIC) |
146 | value = 1; | |
a68ab351 | 147 | gomp_global_icv.run_sched_modifier = value; |
953ff289 DN |
148 | return; |
149 | ||
150 | unknown: | |
151 | gomp_error ("Unknown value for environment variable OMP_SCHEDULE"); | |
152 | return; | |
153 | ||
154 | invalid: | |
155 | gomp_error ("Invalid value for chunk size in " | |
156 | "environment variable OMP_SCHEDULE"); | |
953ff289 DN |
157 | return; |
158 | } | |
159 | ||
a68ab351 | 160 | /* Parse an unsigned long environment variable. Return true if one was |
953ff289 DN |
161 | present and it was successfully parsed. */ |
162 | ||
163 | static bool | |
80f046cc | 164 | parse_unsigned_long (const char *name, unsigned long *pvalue, bool allow_zero) |
953ff289 DN |
165 | { |
166 | char *env, *end; | |
d0d1b24d | 167 | unsigned long value; |
953ff289 | 168 | |
d0d1b24d | 169 | env = getenv (name); |
953ff289 DN |
170 | if (env == NULL) |
171 | return false; | |
172 | ||
89b3e3cd JJ |
173 | while (isspace ((unsigned char) *env)) |
174 | ++env; | |
953ff289 DN |
175 | if (*env == '\0') |
176 | goto invalid; | |
177 | ||
6acf0b38 | 178 | errno = 0; |
d0d1b24d | 179 | value = strtoul (env, &end, 10); |
80f046cc | 180 | if (errno || (long) value <= 0 - allow_zero) |
6acf0b38 UB |
181 | goto invalid; |
182 | ||
89b3e3cd JJ |
183 | while (isspace ((unsigned char) *end)) |
184 | ++end; | |
953ff289 DN |
185 | if (*end != '\0') |
186 | goto invalid; | |
d0d1b24d RH |
187 | |
188 | *pvalue = value; | |
953ff289 DN |
189 | return true; |
190 | ||
191 | invalid: | |
d0d1b24d | 192 | gomp_error ("Invalid value for environment variable %s", name); |
953ff289 DN |
193 | return false; |
194 | } | |
195 | ||
acf0174b JJ |
196 | /* Parse a positive int environment variable. Return true if one was |
197 | present and it was successfully parsed. */ | |
198 | ||
199 | static bool | |
200 | parse_int (const char *name, int *pvalue, bool allow_zero) | |
201 | { | |
202 | unsigned long value; | |
203 | if (!parse_unsigned_long (name, &value, allow_zero)) | |
204 | return false; | |
205 | if (value > INT_MAX) | |
206 | { | |
207 | gomp_error ("Invalid value for environment variable %s", name); | |
208 | return false; | |
209 | } | |
210 | *pvalue = (int) value; | |
211 | return true; | |
212 | } | |
213 | ||
20906c66 JJ |
214 | /* Parse an unsigned long list environment variable. Return true if one was |
215 | present and it was successfully parsed. */ | |
216 | ||
217 | static bool | |
218 | parse_unsigned_long_list (const char *name, unsigned long *p1stvalue, | |
219 | unsigned long **pvalues, | |
220 | unsigned long *pnvalues) | |
221 | { | |
222 | char *env, *end; | |
223 | unsigned long value, *values = NULL; | |
224 | ||
225 | env = getenv (name); | |
226 | if (env == NULL) | |
227 | return false; | |
228 | ||
229 | while (isspace ((unsigned char) *env)) | |
230 | ++env; | |
231 | if (*env == '\0') | |
232 | goto invalid; | |
233 | ||
234 | errno = 0; | |
235 | value = strtoul (env, &end, 10); | |
236 | if (errno || (long) value <= 0) | |
237 | goto invalid; | |
238 | ||
239 | while (isspace ((unsigned char) *end)) | |
240 | ++end; | |
241 | if (*end != '\0') | |
242 | { | |
243 | if (*end == ',') | |
244 | { | |
245 | unsigned long nvalues = 0, nalloced = 0; | |
246 | ||
247 | do | |
248 | { | |
249 | env = end + 1; | |
250 | if (nvalues == nalloced) | |
251 | { | |
252 | unsigned long *n; | |
253 | nalloced = nalloced ? nalloced * 2 : 16; | |
254 | n = realloc (values, nalloced * sizeof (unsigned long)); | |
255 | if (n == NULL) | |
256 | { | |
257 | free (values); | |
258 | gomp_error ("Out of memory while trying to parse" | |
259 | " environment variable %s", name); | |
260 | return false; | |
261 | } | |
262 | values = n; | |
263 | if (nvalues == 0) | |
264 | values[nvalues++] = value; | |
265 | } | |
266 | ||
267 | while (isspace ((unsigned char) *env)) | |
268 | ++env; | |
269 | if (*env == '\0') | |
270 | goto invalid; | |
271 | ||
272 | errno = 0; | |
273 | value = strtoul (env, &end, 10); | |
274 | if (errno || (long) value <= 0) | |
275 | goto invalid; | |
276 | ||
277 | values[nvalues++] = value; | |
278 | while (isspace ((unsigned char) *end)) | |
279 | ++end; | |
280 | if (*end == '\0') | |
281 | break; | |
282 | if (*end != ',') | |
283 | goto invalid; | |
284 | } | |
285 | while (1); | |
286 | *p1stvalue = values[0]; | |
287 | *pvalues = values; | |
288 | *pnvalues = nvalues; | |
289 | return true; | |
290 | } | |
291 | goto invalid; | |
292 | } | |
293 | ||
294 | *p1stvalue = value; | |
295 | return true; | |
296 | ||
297 | invalid: | |
298 | free (values); | |
299 | gomp_error ("Invalid value for environment variable %s", name); | |
300 | return false; | |
301 | } | |
302 | ||
acf0174b JJ |
303 | /* Parse environment variable set to a boolean or list of omp_proc_bind_t |
304 | enum values. Return true if one was present and it was successfully | |
305 | parsed. */ | |
306 | ||
307 | static bool | |
308 | parse_bind_var (const char *name, char *p1stvalue, | |
309 | char **pvalues, unsigned long *pnvalues) | |
310 | { | |
311 | char *env; | |
c8673881 | 312 | char value = omp_proc_bind_false, *values = NULL; |
acf0174b JJ |
313 | int i; |
314 | static struct proc_bind_kinds | |
315 | { | |
316 | const char name[7]; | |
317 | const char len; | |
318 | omp_proc_bind_t kind; | |
319 | } kinds[] = | |
320 | { | |
321 | { "false", 5, omp_proc_bind_false }, | |
322 | { "true", 4, omp_proc_bind_true }, | |
323 | { "master", 6, omp_proc_bind_master }, | |
324 | { "close", 5, omp_proc_bind_close }, | |
325 | { "spread", 6, omp_proc_bind_spread } | |
326 | }; | |
327 | ||
328 | env = getenv (name); | |
329 | if (env == NULL) | |
330 | return false; | |
331 | ||
332 | while (isspace ((unsigned char) *env)) | |
333 | ++env; | |
334 | if (*env == '\0') | |
335 | goto invalid; | |
336 | ||
337 | for (i = 0; i < 5; i++) | |
338 | if (strncasecmp (env, kinds[i].name, kinds[i].len) == 0) | |
339 | { | |
340 | value = kinds[i].kind; | |
341 | env += kinds[i].len; | |
342 | break; | |
343 | } | |
344 | if (i == 5) | |
345 | goto invalid; | |
346 | ||
347 | while (isspace ((unsigned char) *env)) | |
348 | ++env; | |
349 | if (*env != '\0') | |
350 | { | |
351 | if (*env == ',') | |
352 | { | |
353 | unsigned long nvalues = 0, nalloced = 0; | |
354 | ||
355 | if (value == omp_proc_bind_false | |
356 | || value == omp_proc_bind_true) | |
357 | goto invalid; | |
358 | ||
359 | do | |
360 | { | |
361 | env++; | |
362 | if (nvalues == nalloced) | |
363 | { | |
364 | char *n; | |
365 | nalloced = nalloced ? nalloced * 2 : 16; | |
366 | n = realloc (values, nalloced); | |
367 | if (n == NULL) | |
368 | { | |
369 | free (values); | |
370 | gomp_error ("Out of memory while trying to parse" | |
371 | " environment variable %s", name); | |
372 | return false; | |
373 | } | |
374 | values = n; | |
375 | if (nvalues == 0) | |
376 | values[nvalues++] = value; | |
377 | } | |
378 | ||
379 | while (isspace ((unsigned char) *env)) | |
380 | ++env; | |
381 | if (*env == '\0') | |
382 | goto invalid; | |
383 | ||
384 | for (i = 2; i < 5; i++) | |
385 | if (strncasecmp (env, kinds[i].name, kinds[i].len) == 0) | |
386 | { | |
387 | value = kinds[i].kind; | |
388 | env += kinds[i].len; | |
389 | break; | |
390 | } | |
391 | if (i == 5) | |
392 | goto invalid; | |
393 | ||
394 | values[nvalues++] = value; | |
395 | while (isspace ((unsigned char) *env)) | |
396 | ++env; | |
397 | if (*env == '\0') | |
398 | break; | |
399 | if (*env != ',') | |
400 | goto invalid; | |
401 | } | |
402 | while (1); | |
403 | *p1stvalue = values[0]; | |
404 | *pvalues = values; | |
405 | *pnvalues = nvalues; | |
406 | return true; | |
407 | } | |
408 | goto invalid; | |
409 | } | |
410 | ||
411 | *p1stvalue = value; | |
412 | return true; | |
413 | ||
414 | invalid: | |
415 | free (values); | |
416 | gomp_error ("Invalid value for environment variable %s", name); | |
417 | return false; | |
418 | } | |
419 | ||
420 | static bool | |
421 | parse_one_place (char **envp, bool *negatep, unsigned long *lenp, | |
422 | long *stridep) | |
423 | { | |
424 | char *env = *envp, *start; | |
425 | void *p = gomp_places_list ? gomp_places_list[gomp_places_list_len] : NULL; | |
426 | unsigned long len = 1; | |
427 | long stride = 1; | |
428 | int pass; | |
429 | bool any_negate = false; | |
430 | *negatep = false; | |
431 | while (isspace ((unsigned char) *env)) | |
432 | ++env; | |
433 | if (*env == '!') | |
434 | { | |
435 | *negatep = true; | |
436 | ++env; | |
437 | while (isspace ((unsigned char) *env)) | |
438 | ++env; | |
439 | } | |
440 | if (*env != '{') | |
441 | return false; | |
442 | ++env; | |
443 | while (isspace ((unsigned char) *env)) | |
444 | ++env; | |
445 | start = env; | |
446 | for (pass = 0; pass < (any_negate ? 2 : 1); pass++) | |
447 | { | |
448 | env = start; | |
449 | do | |
450 | { | |
451 | unsigned long this_num, this_len = 1; | |
452 | long this_stride = 1; | |
453 | bool this_negate = (*env == '!'); | |
454 | if (this_negate) | |
455 | { | |
456 | if (gomp_places_list) | |
457 | any_negate = true; | |
458 | ++env; | |
459 | while (isspace ((unsigned char) *env)) | |
460 | ++env; | |
461 | } | |
462 | ||
463 | errno = 0; | |
464 | this_num = strtoul (env, &env, 10); | |
465 | if (errno) | |
466 | return false; | |
467 | while (isspace ((unsigned char) *env)) | |
468 | ++env; | |
469 | if (*env == ':') | |
470 | { | |
471 | ++env; | |
472 | while (isspace ((unsigned char) *env)) | |
473 | ++env; | |
474 | errno = 0; | |
475 | this_len = strtoul (env, &env, 10); | |
476 | if (errno || this_len == 0) | |
477 | return false; | |
478 | while (isspace ((unsigned char) *env)) | |
479 | ++env; | |
480 | if (*env == ':') | |
481 | { | |
482 | ++env; | |
483 | while (isspace ((unsigned char) *env)) | |
484 | ++env; | |
485 | errno = 0; | |
486 | this_stride = strtol (env, &env, 10); | |
487 | if (errno) | |
488 | return false; | |
489 | while (isspace ((unsigned char) *env)) | |
490 | ++env; | |
491 | } | |
492 | } | |
493 | if (this_negate && this_len != 1) | |
494 | return false; | |
495 | if (gomp_places_list && pass == this_negate) | |
496 | { | |
497 | if (this_negate) | |
498 | { | |
499 | if (!gomp_affinity_remove_cpu (p, this_num)) | |
500 | return false; | |
501 | } | |
502 | else if (!gomp_affinity_add_cpus (p, this_num, this_len, | |
503 | this_stride, false)) | |
504 | return false; | |
505 | } | |
506 | if (*env == '}') | |
507 | break; | |
508 | if (*env != ',') | |
509 | return false; | |
510 | ++env; | |
511 | } | |
512 | while (1); | |
513 | } | |
514 | ||
515 | ++env; | |
516 | while (isspace ((unsigned char) *env)) | |
517 | ++env; | |
518 | if (*env == ':') | |
519 | { | |
520 | ++env; | |
521 | while (isspace ((unsigned char) *env)) | |
522 | ++env; | |
523 | errno = 0; | |
524 | len = strtoul (env, &env, 10); | |
525 | if (errno || len == 0 || len >= 65536) | |
526 | return false; | |
527 | while (isspace ((unsigned char) *env)) | |
528 | ++env; | |
529 | if (*env == ':') | |
530 | { | |
531 | ++env; | |
532 | while (isspace ((unsigned char) *env)) | |
533 | ++env; | |
534 | errno = 0; | |
535 | stride = strtol (env, &env, 10); | |
536 | if (errno) | |
537 | return false; | |
538 | while (isspace ((unsigned char) *env)) | |
539 | ++env; | |
540 | } | |
541 | } | |
542 | if (*negatep && len != 1) | |
543 | return false; | |
544 | *envp = env; | |
545 | *lenp = len; | |
546 | *stridep = stride; | |
547 | return true; | |
548 | } | |
549 | ||
550 | static bool | |
f89163fd | 551 | parse_places_var (const char *name, bool ignore) |
acf0174b JJ |
552 | { |
553 | char *env = getenv (name), *end; | |
554 | bool any_negate = false; | |
555 | int level = 0; | |
556 | unsigned long count = 0; | |
557 | if (env == NULL) | |
558 | return false; | |
559 | ||
560 | while (isspace ((unsigned char) *env)) | |
561 | ++env; | |
562 | if (*env == '\0') | |
563 | goto invalid; | |
564 | ||
565 | if (strncasecmp (env, "threads", 7) == 0) | |
566 | { | |
567 | env += 7; | |
568 | level = 1; | |
569 | } | |
570 | else if (strncasecmp (env, "cores", 5) == 0) | |
571 | { | |
572 | env += 5; | |
573 | level = 2; | |
574 | } | |
575 | else if (strncasecmp (env, "sockets", 7) == 0) | |
576 | { | |
577 | env += 7; | |
578 | level = 3; | |
579 | } | |
580 | if (level) | |
581 | { | |
582 | count = ULONG_MAX; | |
583 | while (isspace ((unsigned char) *env)) | |
584 | ++env; | |
585 | if (*env != '\0') | |
586 | { | |
587 | if (*env++ != '(') | |
588 | goto invalid; | |
589 | while (isspace ((unsigned char) *env)) | |
590 | ++env; | |
591 | ||
592 | errno = 0; | |
593 | count = strtoul (env, &end, 10); | |
594 | if (errno) | |
595 | goto invalid; | |
596 | env = end; | |
597 | while (isspace ((unsigned char) *env)) | |
598 | ++env; | |
599 | if (*env != ')') | |
600 | goto invalid; | |
601 | ++env; | |
602 | while (isspace ((unsigned char) *env)) | |
603 | ++env; | |
604 | if (*env != '\0') | |
605 | goto invalid; | |
606 | } | |
f89163fd JJ |
607 | |
608 | if (ignore) | |
609 | return false; | |
610 | ||
acf0174b JJ |
611 | return gomp_affinity_init_level (level, count, false); |
612 | } | |
613 | ||
614 | count = 0; | |
615 | end = env; | |
616 | do | |
617 | { | |
618 | bool negate; | |
619 | unsigned long len; | |
620 | long stride; | |
621 | if (!parse_one_place (&end, &negate, &len, &stride)) | |
622 | goto invalid; | |
623 | if (negate) | |
624 | { | |
625 | if (!any_negate) | |
626 | count++; | |
627 | any_negate = true; | |
628 | } | |
629 | else | |
630 | count += len; | |
631 | if (count > 65536) | |
632 | goto invalid; | |
633 | if (*end == '\0') | |
634 | break; | |
635 | if (*end != ',') | |
636 | goto invalid; | |
637 | end++; | |
638 | } | |
639 | while (1); | |
640 | ||
f89163fd | 641 | if (ignore) |
acf0174b JJ |
642 | return false; |
643 | ||
644 | gomp_places_list_len = 0; | |
645 | gomp_places_list = gomp_affinity_alloc (count, false); | |
646 | if (gomp_places_list == NULL) | |
647 | return false; | |
648 | ||
649 | do | |
650 | { | |
651 | bool negate; | |
652 | unsigned long len; | |
653 | long stride; | |
654 | gomp_affinity_init_place (gomp_places_list[gomp_places_list_len]); | |
655 | if (!parse_one_place (&env, &negate, &len, &stride)) | |
656 | goto invalid; | |
657 | if (negate) | |
658 | { | |
659 | void *p; | |
660 | for (count = 0; count < gomp_places_list_len; count++) | |
661 | if (gomp_affinity_same_place | |
662 | (gomp_places_list[count], | |
663 | gomp_places_list[gomp_places_list_len])) | |
664 | break; | |
665 | if (count == gomp_places_list_len) | |
666 | { | |
667 | gomp_error ("Trying to remove a non-existing place from list " | |
668 | "of places"); | |
669 | goto invalid; | |
670 | } | |
671 | p = gomp_places_list[count]; | |
672 | memmove (&gomp_places_list[count], | |
673 | &gomp_places_list[count + 1], | |
674 | (gomp_places_list_len - count - 1) * sizeof (void *)); | |
675 | --gomp_places_list_len; | |
676 | gomp_places_list[gomp_places_list_len] = p; | |
677 | } | |
678 | else if (len == 1) | |
679 | ++gomp_places_list_len; | |
680 | else | |
681 | { | |
682 | for (count = 0; count < len - 1; count++) | |
683 | if (!gomp_affinity_copy_place | |
684 | (gomp_places_list[gomp_places_list_len + count + 1], | |
685 | gomp_places_list[gomp_places_list_len + count], | |
686 | stride)) | |
687 | goto invalid; | |
688 | gomp_places_list_len += len; | |
689 | } | |
690 | if (*env == '\0') | |
691 | break; | |
692 | env++; | |
693 | } | |
694 | while (1); | |
695 | ||
696 | if (gomp_places_list_len == 0) | |
697 | { | |
698 | gomp_error ("All places have been removed"); | |
699 | goto invalid; | |
700 | } | |
701 | if (!gomp_affinity_finalize_place_list (false)) | |
702 | goto invalid; | |
703 | return true; | |
704 | ||
705 | invalid: | |
706 | free (gomp_places_list); | |
707 | gomp_places_list = NULL; | |
708 | gomp_places_list_len = 0; | |
709 | gomp_error ("Invalid value for environment variable %s", name); | |
710 | return false; | |
711 | } | |
712 | ||
a68ab351 JJ |
713 | /* Parse the OMP_STACKSIZE environment varible. Return true if one was |
714 | present and it was successfully parsed. */ | |
715 | ||
716 | static bool | |
717 | parse_stacksize (const char *name, unsigned long *pvalue) | |
718 | { | |
719 | char *env, *end; | |
720 | unsigned long value, shift = 10; | |
721 | ||
722 | env = getenv (name); | |
723 | if (env == NULL) | |
724 | return false; | |
725 | ||
726 | while (isspace ((unsigned char) *env)) | |
727 | ++env; | |
728 | if (*env == '\0') | |
729 | goto invalid; | |
730 | ||
731 | errno = 0; | |
732 | value = strtoul (env, &end, 10); | |
733 | if (errno) | |
734 | goto invalid; | |
735 | ||
736 | while (isspace ((unsigned char) *end)) | |
737 | ++end; | |
738 | if (*end != '\0') | |
739 | { | |
323ff903 | 740 | switch (tolower ((unsigned char) *end)) |
a68ab351 JJ |
741 | { |
742 | case 'b': | |
743 | shift = 0; | |
744 | break; | |
745 | case 'k': | |
746 | break; | |
747 | case 'm': | |
748 | shift = 20; | |
749 | break; | |
750 | case 'g': | |
751 | shift = 30; | |
752 | break; | |
753 | default: | |
754 | goto invalid; | |
755 | } | |
756 | ++end; | |
757 | while (isspace ((unsigned char) *end)) | |
758 | ++end; | |
759 | if (*end != '\0') | |
760 | goto invalid; | |
761 | } | |
762 | ||
763 | if (((value << shift) >> shift) != value) | |
764 | goto invalid; | |
765 | ||
766 | *pvalue = value << shift; | |
767 | return true; | |
768 | ||
769 | invalid: | |
770 | gomp_error ("Invalid value for environment variable %s", name); | |
771 | return false; | |
772 | } | |
773 | ||
774 | /* Parse the GOMP_SPINCOUNT environment varible. Return true if one was | |
775 | present and it was successfully parsed. */ | |
776 | ||
777 | static bool | |
778 | parse_spincount (const char *name, unsigned long long *pvalue) | |
779 | { | |
780 | char *env, *end; | |
781 | unsigned long long value, mult = 1; | |
782 | ||
783 | env = getenv (name); | |
784 | if (env == NULL) | |
785 | return false; | |
786 | ||
787 | while (isspace ((unsigned char) *env)) | |
788 | ++env; | |
789 | if (*env == '\0') | |
790 | goto invalid; | |
791 | ||
792 | if (strncasecmp (env, "infinite", 8) == 0 | |
793 | || strncasecmp (env, "infinity", 8) == 0) | |
794 | { | |
795 | value = ~0ULL; | |
796 | end = env + 8; | |
797 | goto check_tail; | |
798 | } | |
799 | ||
800 | errno = 0; | |
801 | value = strtoull (env, &end, 10); | |
802 | if (errno) | |
803 | goto invalid; | |
804 | ||
805 | while (isspace ((unsigned char) *end)) | |
806 | ++end; | |
807 | if (*end != '\0') | |
808 | { | |
323ff903 | 809 | switch (tolower ((unsigned char) *end)) |
a68ab351 JJ |
810 | { |
811 | case 'k': | |
812 | mult = 1000LL; | |
813 | break; | |
814 | case 'm': | |
815 | mult = 1000LL * 1000LL; | |
816 | break; | |
817 | case 'g': | |
818 | mult = 1000LL * 1000LL * 1000LL; | |
819 | break; | |
820 | case 't': | |
821 | mult = 1000LL * 1000LL * 1000LL * 1000LL; | |
822 | break; | |
823 | default: | |
824 | goto invalid; | |
825 | } | |
826 | ++end; | |
827 | check_tail: | |
828 | while (isspace ((unsigned char) *end)) | |
829 | ++end; | |
830 | if (*end != '\0') | |
831 | goto invalid; | |
832 | } | |
833 | ||
834 | if (value > ~0ULL / mult) | |
835 | value = ~0ULL; | |
836 | else | |
837 | value *= mult; | |
838 | ||
839 | *pvalue = value; | |
840 | return true; | |
841 | ||
842 | invalid: | |
843 | gomp_error ("Invalid value for environment variable %s", name); | |
844 | return false; | |
845 | } | |
846 | ||
847 | /* Parse a boolean value for environment variable NAME and store the | |
953ff289 DN |
848 | result in VALUE. */ |
849 | ||
850 | static void | |
851 | parse_boolean (const char *name, bool *value) | |
852 | { | |
853 | const char *env; | |
854 | ||
855 | env = getenv (name); | |
856 | if (env == NULL) | |
857 | return; | |
858 | ||
89b3e3cd JJ |
859 | while (isspace ((unsigned char) *env)) |
860 | ++env; | |
861 | if (strncasecmp (env, "true", 4) == 0) | |
862 | { | |
863 | *value = true; | |
864 | env += 4; | |
865 | } | |
866 | else if (strncasecmp (env, "false", 5) == 0) | |
867 | { | |
868 | *value = false; | |
869 | env += 5; | |
870 | } | |
953ff289 | 871 | else |
89b3e3cd JJ |
872 | env = "X"; |
873 | while (isspace ((unsigned char) *env)) | |
874 | ++env; | |
875 | if (*env != '\0') | |
d0d1b24d | 876 | gomp_error ("Invalid value for environment variable %s", name); |
953ff289 DN |
877 | } |
878 | ||
a68ab351 JJ |
879 | /* Parse the OMP_WAIT_POLICY environment variable and store the |
880 | result in gomp_active_wait_policy. */ | |
881 | ||
882 | static int | |
883 | parse_wait_policy (void) | |
884 | { | |
885 | const char *env; | |
886 | int ret = -1; | |
887 | ||
888 | env = getenv ("OMP_WAIT_POLICY"); | |
889 | if (env == NULL) | |
890 | return -1; | |
891 | ||
892 | while (isspace ((unsigned char) *env)) | |
893 | ++env; | |
894 | if (strncasecmp (env, "active", 6) == 0) | |
895 | { | |
896 | ret = 1; | |
897 | env += 6; | |
898 | } | |
899 | else if (strncasecmp (env, "passive", 7) == 0) | |
900 | { | |
901 | ret = 0; | |
902 | env += 7; | |
903 | } | |
904 | else | |
905 | env = "X"; | |
906 | while (isspace ((unsigned char) *env)) | |
907 | ++env; | |
908 | if (*env == '\0') | |
909 | return ret; | |
910 | gomp_error ("Invalid value for environment variable OMP_WAIT_POLICY"); | |
911 | return -1; | |
912 | } | |
913 | ||
a0884cf0 JJ |
914 | /* Parse the GOMP_CPU_AFFINITY environment varible. Return true if one was |
915 | present and it was successfully parsed. */ | |
916 | ||
917 | static bool | |
f89163fd | 918 | parse_affinity (bool ignore) |
a0884cf0 | 919 | { |
acf0174b JJ |
920 | char *env, *end, *start; |
921 | int pass; | |
a0884cf0 | 922 | unsigned long cpu_beg, cpu_end, cpu_stride; |
acf0174b | 923 | size_t count = 0, needed; |
a0884cf0 JJ |
924 | |
925 | env = getenv ("GOMP_CPU_AFFINITY"); | |
926 | if (env == NULL) | |
927 | return false; | |
928 | ||
acf0174b JJ |
929 | start = env; |
930 | for (pass = 0; pass < 2; pass++) | |
a0884cf0 | 931 | { |
acf0174b JJ |
932 | env = start; |
933 | if (pass == 1) | |
a0884cf0 | 934 | { |
f89163fd JJ |
935 | if (ignore) |
936 | return false; | |
937 | ||
acf0174b JJ |
938 | gomp_places_list_len = 0; |
939 | gomp_places_list = gomp_affinity_alloc (count, true); | |
940 | if (gomp_places_list == NULL) | |
941 | return false; | |
942 | } | |
943 | do | |
944 | { | |
945 | while (isspace ((unsigned char) *env)) | |
946 | ++env; | |
947 | ||
948 | errno = 0; | |
949 | cpu_beg = strtoul (env, &end, 0); | |
950 | if (errno || cpu_beg >= 65536) | |
a0884cf0 | 951 | goto invalid; |
acf0174b JJ |
952 | cpu_end = cpu_beg; |
953 | cpu_stride = 1; | |
a0884cf0 JJ |
954 | |
955 | env = end; | |
acf0174b | 956 | if (*env == '-') |
a0884cf0 | 957 | { |
acf0174b JJ |
958 | errno = 0; |
959 | cpu_end = strtoul (++env, &end, 0); | |
960 | if (errno || cpu_end >= 65536 || cpu_end < cpu_beg) | |
a0884cf0 JJ |
961 | goto invalid; |
962 | ||
963 | env = end; | |
acf0174b JJ |
964 | if (*env == ':') |
965 | { | |
966 | errno = 0; | |
967 | cpu_stride = strtoul (++env, &end, 0); | |
968 | if (errno || cpu_stride == 0 || cpu_stride >= 65536) | |
969 | goto invalid; | |
a0884cf0 | 970 | |
acf0174b JJ |
971 | env = end; |
972 | } | |
973 | } | |
a0884cf0 | 974 | |
acf0174b JJ |
975 | needed = (cpu_end - cpu_beg) / cpu_stride + 1; |
976 | if (pass == 0) | |
977 | count += needed; | |
a0884cf0 | 978 | else |
a0884cf0 | 979 | { |
acf0174b JJ |
980 | while (needed--) |
981 | { | |
982 | void *p = gomp_places_list[gomp_places_list_len]; | |
983 | gomp_affinity_init_place (p); | |
984 | if (gomp_affinity_add_cpus (p, cpu_beg, 1, 0, true)) | |
985 | ++gomp_places_list_len; | |
986 | cpu_beg += cpu_stride; | |
987 | } | |
a0884cf0 JJ |
988 | } |
989 | ||
acf0174b JJ |
990 | while (isspace ((unsigned char) *env)) |
991 | ++env; | |
a0884cf0 | 992 | |
acf0174b JJ |
993 | if (*env == ',') |
994 | env++; | |
995 | else if (*env == '\0') | |
996 | break; | |
a0884cf0 | 997 | } |
acf0174b | 998 | while (1); |
a0884cf0 | 999 | } |
a0884cf0 | 1000 | |
acf0174b JJ |
1001 | if (gomp_places_list_len == 0) |
1002 | { | |
1003 | free (gomp_places_list); | |
1004 | gomp_places_list = NULL; | |
f89163fd | 1005 | return false; |
acf0174b | 1006 | } |
a0884cf0 JJ |
1007 | return true; |
1008 | ||
1009 | invalid: | |
1010 | gomp_error ("Invalid value for enviroment variable GOMP_CPU_AFFINITY"); | |
1011 | return false; | |
1012 | } | |
1013 | ||
acf0174b JJ |
1014 | |
1015 | static void | |
1016 | handle_omp_display_env (unsigned long stacksize, int wait_policy) | |
1017 | { | |
1018 | const char *env; | |
1019 | bool display = false; | |
1020 | bool verbose = false; | |
1021 | int i; | |
1022 | ||
1023 | env = getenv ("OMP_DISPLAY_ENV"); | |
1024 | if (env == NULL) | |
1025 | return; | |
1026 | ||
1027 | while (isspace ((unsigned char) *env)) | |
1028 | ++env; | |
1029 | if (strncasecmp (env, "true", 4) == 0) | |
1030 | { | |
1031 | display = true; | |
1032 | env += 4; | |
1033 | } | |
1034 | else if (strncasecmp (env, "false", 5) == 0) | |
1035 | { | |
1036 | display = false; | |
1037 | env += 5; | |
1038 | } | |
1039 | else if (strncasecmp (env, "verbose", 7) == 0) | |
1040 | { | |
1041 | display = true; | |
1042 | verbose = true; | |
1043 | env += 7; | |
1044 | } | |
1045 | else | |
1046 | env = "X"; | |
1047 | while (isspace ((unsigned char) *env)) | |
1048 | ++env; | |
1049 | if (*env != '\0') | |
1050 | gomp_error ("Invalid value for environment variable OMP_DISPLAY_ENV"); | |
1051 | ||
1052 | if (!display) | |
1053 | return; | |
1054 | ||
1055 | fputs ("\nOPENMP DISPLAY ENVIRONMENT BEGIN\n", stderr); | |
1056 | ||
1057 | fputs (" _OPENMP = '201307'\n", stderr); | |
1058 | fprintf (stderr, " OMP_DYNAMIC = '%s'\n", | |
1059 | gomp_global_icv.dyn_var ? "TRUE" : "FALSE"); | |
1060 | fprintf (stderr, " OMP_NESTED = '%s'\n", | |
1061 | gomp_global_icv.nest_var ? "TRUE" : "FALSE"); | |
1062 | ||
1063 | fprintf (stderr, " OMP_NUM_THREADS = '%lu", gomp_global_icv.nthreads_var); | |
1064 | for (i = 1; i < gomp_nthreads_var_list_len; i++) | |
1065 | fprintf (stderr, ",%lu", gomp_nthreads_var_list[i]); | |
1066 | fputs ("'\n", stderr); | |
1067 | ||
1068 | fprintf (stderr, " OMP_SCHEDULE = '"); | |
1069 | switch (gomp_global_icv.run_sched_var) | |
1070 | { | |
1071 | case GFS_RUNTIME: | |
1072 | fputs ("RUNTIME", stderr); | |
1073 | break; | |
1074 | case GFS_STATIC: | |
1075 | fputs ("STATIC", stderr); | |
1076 | break; | |
1077 | case GFS_DYNAMIC: | |
1078 | fputs ("DYNAMIC", stderr); | |
1079 | break; | |
1080 | case GFS_GUIDED: | |
1081 | fputs ("GUIDED", stderr); | |
1082 | break; | |
1083 | case GFS_AUTO: | |
1084 | fputs ("AUTO", stderr); | |
1085 | break; | |
1086 | } | |
1087 | fputs ("'\n", stderr); | |
1088 | ||
1089 | fputs (" OMP_PROC_BIND = '", stderr); | |
1090 | switch (gomp_global_icv.bind_var) | |
1091 | { | |
1092 | case omp_proc_bind_false: | |
1093 | fputs ("FALSE", stderr); | |
1094 | break; | |
1095 | case omp_proc_bind_true: | |
1096 | fputs ("TRUE", stderr); | |
1097 | break; | |
1098 | case omp_proc_bind_master: | |
1099 | fputs ("MASTER", stderr); | |
1100 | break; | |
1101 | case omp_proc_bind_close: | |
1102 | fputs ("CLOSE", stderr); | |
1103 | break; | |
1104 | case omp_proc_bind_spread: | |
1105 | fputs ("SPREAD", stderr); | |
1106 | break; | |
1107 | } | |
1108 | for (i = 1; i < gomp_bind_var_list_len; i++) | |
1109 | switch (gomp_bind_var_list[i]) | |
1110 | { | |
1111 | case omp_proc_bind_master: | |
1112 | fputs (",MASTER", stderr); | |
1113 | break; | |
1114 | case omp_proc_bind_close: | |
1115 | fputs (",CLOSE", stderr); | |
1116 | break; | |
1117 | case omp_proc_bind_spread: | |
1118 | fputs (",SPREAD", stderr); | |
1119 | break; | |
1120 | } | |
1121 | fputs ("'\n", stderr); | |
1122 | fputs (" OMP_PLACES = '", stderr); | |
1123 | for (i = 0; i < gomp_places_list_len; i++) | |
1124 | { | |
1125 | fputs ("{", stderr); | |
1126 | gomp_affinity_print_place (gomp_places_list[i]); | |
1127 | fputs (i + 1 == gomp_places_list_len ? "}" : "},", stderr); | |
1128 | } | |
1129 | fputs ("'\n", stderr); | |
1130 | ||
1131 | fprintf (stderr, " OMP_STACKSIZE = '%lu'\n", stacksize); | |
1132 | ||
1133 | /* GOMP's default value is actually neither active nor passive. */ | |
1134 | fprintf (stderr, " OMP_WAIT_POLICY = '%s'\n", | |
1135 | wait_policy > 0 ? "ACTIVE" : "PASSIVE"); | |
1136 | fprintf (stderr, " OMP_THREAD_LIMIT = '%u'\n", | |
1137 | gomp_global_icv.thread_limit_var); | |
1138 | fprintf (stderr, " OMP_MAX_ACTIVE_LEVELS = '%lu'\n", | |
1139 | gomp_max_active_levels_var); | |
1140 | ||
1141 | fprintf (stderr, " OMP_CANCELLATION = '%s'\n", | |
1142 | gomp_cancel_var ? "TRUE" : "FALSE"); | |
1143 | fprintf (stderr, " OMP_DEFAULT_DEVICE = '%d'\n", | |
1144 | gomp_global_icv.default_device_var); | |
1145 | ||
1146 | if (verbose) | |
1147 | { | |
1148 | fputs (" GOMP_CPU_AFFINITY = ''\n", stderr); | |
1149 | fprintf (stderr, " GOMP_STACKSIZE = '%lu'\n", stacksize); | |
1150 | #ifdef HAVE_INTTYPES_H | |
1151 | fprintf (stderr, " GOMP_SPINCOUNT = '%"PRIu64"'\n", | |
1152 | (uint64_t) gomp_spin_count_var); | |
1153 | #else | |
1154 | fprintf (stderr, " GOMP_SPINCOUNT = '%lu'\n", | |
1155 | (unsigned long) gomp_spin_count_var); | |
1156 | #endif | |
1157 | } | |
1158 | ||
1159 | fputs ("OPENMP DISPLAY ENVIRONMENT END\n", stderr); | |
1160 | } | |
1161 | ||
1162 | ||
953ff289 DN |
1163 | static void __attribute__((constructor)) |
1164 | initialize_env (void) | |
1165 | { | |
acf0174b | 1166 | unsigned long thread_limit_var, stacksize; |
a68ab351 | 1167 | int wait_policy; |
d0d1b24d | 1168 | |
953ff289 DN |
1169 | /* Do a compile time check that mkomp_h.pl did good job. */ |
1170 | omp_check_defines (); | |
1171 | ||
1172 | parse_schedule (); | |
a68ab351 JJ |
1173 | parse_boolean ("OMP_DYNAMIC", &gomp_global_icv.dyn_var); |
1174 | parse_boolean ("OMP_NESTED", &gomp_global_icv.nest_var); | |
acf0174b JJ |
1175 | parse_boolean ("OMP_CANCELLATION", &gomp_cancel_var); |
1176 | parse_int ("OMP_DEFAULT_DEVICE", &gomp_global_icv.default_device_var, true); | |
80f046cc JJ |
1177 | parse_unsigned_long ("OMP_MAX_ACTIVE_LEVELS", &gomp_max_active_levels_var, |
1178 | true); | |
acf0174b JJ |
1179 | if (parse_unsigned_long ("OMP_THREAD_LIMIT", &thread_limit_var, false)) |
1180 | { | |
1181 | gomp_global_icv.thread_limit_var | |
1182 | = thread_limit_var > INT_MAX ? UINT_MAX : thread_limit_var; | |
1183 | } | |
a68ab351 | 1184 | #ifndef HAVE_SYNC_BUILTINS |
acf0174b | 1185 | gomp_mutex_init (&gomp_managed_threads_lock); |
a68ab351 | 1186 | #endif |
a68ab351 JJ |
1187 | gomp_init_num_threads (); |
1188 | gomp_available_cpus = gomp_global_icv.nthreads_var; | |
20906c66 JJ |
1189 | if (!parse_unsigned_long_list ("OMP_NUM_THREADS", |
1190 | &gomp_global_icv.nthreads_var, | |
1191 | &gomp_nthreads_var_list, | |
1192 | &gomp_nthreads_var_list_len)) | |
a68ab351 | 1193 | gomp_global_icv.nthreads_var = gomp_available_cpus; |
f89163fd JJ |
1194 | bool ignore = false; |
1195 | if (parse_bind_var ("OMP_PROC_BIND", | |
1196 | &gomp_global_icv.bind_var, | |
1197 | &gomp_bind_var_list, | |
1198 | &gomp_bind_var_list_len) | |
1199 | && gomp_global_icv.bind_var == omp_proc_bind_false) | |
1200 | ignore = true; | |
1201 | /* Make sure OMP_PLACES and GOMP_CPU_AFFINITY env vars are always | |
1202 | parsed if present in the environment. If OMP_PROC_BIND was set | |
1203 | explictly to false, don't populate places list though. If places | |
1204 | list was successfully set from OMP_PLACES, only parse but don't process | |
1205 | GOMP_CPU_AFFINITY. If OMP_PROC_BIND was not set in the environment, | |
1206 | default to OMP_PROC_BIND=true if OMP_PLACES or GOMP_CPU_AFFINITY | |
1207 | was successfully parsed into a places list, otherwise to | |
1208 | OMP_PROC_BIND=false. */ | |
1209 | if (parse_places_var ("OMP_PLACES", ignore)) | |
1210 | { | |
1211 | if (gomp_global_icv.bind_var == omp_proc_bind_false) | |
1212 | gomp_global_icv.bind_var = true; | |
1213 | ignore = true; | |
1214 | } | |
1215 | if (parse_affinity (ignore)) | |
1216 | { | |
1217 | if (gomp_global_icv.bind_var == omp_proc_bind_false) | |
1218 | gomp_global_icv.bind_var = true; | |
1219 | ignore = true; | |
1220 | } | |
1221 | if (gomp_global_icv.bind_var != omp_proc_bind_false) | |
a0884cf0 | 1222 | gomp_init_affinity (); |
a68ab351 JJ |
1223 | wait_policy = parse_wait_policy (); |
1224 | if (!parse_spincount ("GOMP_SPINCOUNT", &gomp_spin_count_var)) | |
1225 | { | |
1226 | /* Using a rough estimation of 100000 spins per msec, | |
1227 | use 5 min blocking for OMP_WAIT_POLICY=active, | |
4c698cf8 | 1228 | 3 msec blocking when OMP_WAIT_POLICY is not specificed |
a68ab351 JJ |
1229 | and 0 when OMP_WAIT_POLICY=passive. |
1230 | Depending on the CPU speed, this can be e.g. 5 times longer | |
1231 | or 5 times shorter. */ | |
1232 | if (wait_policy > 0) | |
1233 | gomp_spin_count_var = 30000000000LL; | |
1234 | else if (wait_policy < 0) | |
4c698cf8 | 1235 | gomp_spin_count_var = 300000LL; |
a68ab351 JJ |
1236 | } |
1237 | /* gomp_throttled_spin_count_var is used when there are more libgomp | |
1238 | managed threads than available CPUs. Use very short spinning. */ | |
1239 | if (wait_policy > 0) | |
1240 | gomp_throttled_spin_count_var = 1000LL; | |
1241 | else if (wait_policy < 0) | |
1242 | gomp_throttled_spin_count_var = 100LL; | |
1243 | if (gomp_throttled_spin_count_var > gomp_spin_count_var) | |
1244 | gomp_throttled_spin_count_var = gomp_spin_count_var; | |
d0d1b24d RH |
1245 | |
1246 | /* Not strictly environment related, but ordering constructors is tricky. */ | |
1247 | pthread_attr_init (&gomp_thread_attr); | |
1248 | pthread_attr_setdetachstate (&gomp_thread_attr, PTHREAD_CREATE_DETACHED); | |
1249 | ||
a68ab351 JJ |
1250 | if (parse_stacksize ("OMP_STACKSIZE", &stacksize) |
1251 | || parse_stacksize ("GOMP_STACKSIZE", &stacksize)) | |
d0d1b24d | 1252 | { |
c3b11a40 RH |
1253 | int err; |
1254 | ||
c3b11a40 RH |
1255 | err = pthread_attr_setstacksize (&gomp_thread_attr, stacksize); |
1256 | ||
1257 | #ifdef PTHREAD_STACK_MIN | |
1258 | if (err == EINVAL) | |
d0d1b24d | 1259 | { |
c3b11a40 RH |
1260 | if (stacksize < PTHREAD_STACK_MIN) |
1261 | gomp_error ("Stack size less than minimum of %luk", | |
1262 | PTHREAD_STACK_MIN / 1024ul | |
1263 | + (PTHREAD_STACK_MIN % 1024 != 0)); | |
1264 | else | |
d0d1b24d | 1265 | gomp_error ("Stack size larger than system limit"); |
d0d1b24d | 1266 | } |
c3b11a40 RH |
1267 | else |
1268 | #endif | |
1269 | if (err != 0) | |
1270 | gomp_error ("Stack size change failed: %s", strerror (err)); | |
d0d1b24d | 1271 | } |
acf0174b JJ |
1272 | |
1273 | handle_omp_display_env (stacksize, wait_policy); | |
953ff289 DN |
1274 | } |
1275 | ||
1276 | \f | |
1277 | /* The public OpenMP API routines that access these variables. */ | |
1278 | ||
1279 | void | |
1280 | omp_set_num_threads (int n) | |
1281 | { | |
a68ab351 JJ |
1282 | struct gomp_task_icv *icv = gomp_icv (true); |
1283 | icv->nthreads_var = (n > 0 ? n : 1); | |
953ff289 DN |
1284 | } |
1285 | ||
1286 | void | |
1287 | omp_set_dynamic (int val) | |
1288 | { | |
a68ab351 JJ |
1289 | struct gomp_task_icv *icv = gomp_icv (true); |
1290 | icv->dyn_var = val; | |
953ff289 DN |
1291 | } |
1292 | ||
1293 | int | |
1294 | omp_get_dynamic (void) | |
1295 | { | |
a68ab351 JJ |
1296 | struct gomp_task_icv *icv = gomp_icv (false); |
1297 | return icv->dyn_var; | |
953ff289 DN |
1298 | } |
1299 | ||
1300 | void | |
1301 | omp_set_nested (int val) | |
1302 | { | |
a68ab351 JJ |
1303 | struct gomp_task_icv *icv = gomp_icv (true); |
1304 | icv->nest_var = val; | |
953ff289 DN |
1305 | } |
1306 | ||
1307 | int | |
1308 | omp_get_nested (void) | |
1309 | { | |
a68ab351 JJ |
1310 | struct gomp_task_icv *icv = gomp_icv (false); |
1311 | return icv->nest_var; | |
1312 | } | |
1313 | ||
1314 | void | |
1315 | omp_set_schedule (omp_sched_t kind, int modifier) | |
1316 | { | |
1317 | struct gomp_task_icv *icv = gomp_icv (true); | |
1318 | switch (kind) | |
1319 | { | |
1320 | case omp_sched_static: | |
1321 | if (modifier < 1) | |
1322 | modifier = 0; | |
1323 | icv->run_sched_modifier = modifier; | |
1324 | break; | |
1325 | case omp_sched_dynamic: | |
1326 | case omp_sched_guided: | |
1327 | if (modifier < 1) | |
1328 | modifier = 1; | |
1329 | icv->run_sched_modifier = modifier; | |
1330 | break; | |
1331 | case omp_sched_auto: | |
1332 | break; | |
1333 | default: | |
1334 | return; | |
1335 | } | |
1336 | icv->run_sched_var = kind; | |
1337 | } | |
1338 | ||
1339 | void | |
1340 | omp_get_schedule (omp_sched_t *kind, int *modifier) | |
1341 | { | |
1342 | struct gomp_task_icv *icv = gomp_icv (false); | |
1343 | *kind = icv->run_sched_var; | |
1344 | *modifier = icv->run_sched_modifier; | |
1345 | } | |
1346 | ||
1347 | int | |
1348 | omp_get_max_threads (void) | |
1349 | { | |
1350 | struct gomp_task_icv *icv = gomp_icv (false); | |
1351 | return icv->nthreads_var; | |
1352 | } | |
1353 | ||
1354 | int | |
1355 | omp_get_thread_limit (void) | |
1356 | { | |
acf0174b JJ |
1357 | struct gomp_task_icv *icv = gomp_icv (false); |
1358 | return icv->thread_limit_var > INT_MAX ? INT_MAX : icv->thread_limit_var; | |
a68ab351 JJ |
1359 | } |
1360 | ||
1361 | void | |
1362 | omp_set_max_active_levels (int max_levels) | |
1363 | { | |
80f046cc | 1364 | if (max_levels >= 0) |
a68ab351 JJ |
1365 | gomp_max_active_levels_var = max_levels; |
1366 | } | |
1367 | ||
1368 | int | |
1369 | omp_get_max_active_levels (void) | |
1370 | { | |
1371 | return gomp_max_active_levels_var; | |
953ff289 DN |
1372 | } |
1373 | ||
acf0174b JJ |
1374 | int |
1375 | omp_get_cancellation (void) | |
1376 | { | |
1377 | return gomp_cancel_var; | |
1378 | } | |
1379 | ||
1380 | omp_proc_bind_t | |
1381 | omp_get_proc_bind (void) | |
1382 | { | |
1383 | struct gomp_task_icv *icv = gomp_icv (false); | |
1384 | return icv->bind_var; | |
1385 | } | |
1386 | ||
1387 | void | |
1388 | omp_set_default_device (int device_num) | |
1389 | { | |
1390 | struct gomp_task_icv *icv = gomp_icv (true); | |
1391 | icv->default_device_var = device_num >= 0 ? device_num : 0; | |
1392 | } | |
1393 | ||
1394 | int | |
1395 | omp_get_default_device (void) | |
1396 | { | |
1397 | struct gomp_task_icv *icv = gomp_icv (false); | |
1398 | return icv->default_device_var; | |
1399 | } | |
1400 | ||
1401 | int | |
1402 | omp_get_num_devices (void) | |
1403 | { | |
1404 | return gomp_get_num_devices (); | |
1405 | } | |
1406 | ||
1407 | int | |
1408 | omp_get_num_teams (void) | |
1409 | { | |
1410 | /* Hardcoded to 1 on host, MIC, HSAIL? Maybe variable on PTX. */ | |
1411 | return 1; | |
1412 | } | |
1413 | ||
1414 | int | |
1415 | omp_get_team_num (void) | |
1416 | { | |
1417 | /* Hardcoded to 0 on host, MIC, HSAIL? Maybe variable on PTX. */ | |
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | int | |
1422 | omp_is_initial_device (void) | |
1423 | { | |
1424 | /* Hardcoded to 1 on host, should be 0 on MIC, HSAIL, PTX. */ | |
1425 | return 1; | |
1426 | } | |
1427 | ||
953ff289 DN |
1428 | ialias (omp_set_dynamic) |
1429 | ialias (omp_set_nested) | |
1430 | ialias (omp_set_num_threads) | |
1431 | ialias (omp_get_dynamic) | |
1432 | ialias (omp_get_nested) | |
a68ab351 JJ |
1433 | ialias (omp_set_schedule) |
1434 | ialias (omp_get_schedule) | |
1435 | ialias (omp_get_max_threads) | |
1436 | ialias (omp_get_thread_limit) | |
1437 | ialias (omp_set_max_active_levels) | |
1438 | ialias (omp_get_max_active_levels) | |
acf0174b JJ |
1439 | ialias (omp_get_cancellation) |
1440 | ialias (omp_get_proc_bind) | |
1441 | ialias (omp_set_default_device) | |
1442 | ialias (omp_get_default_device) | |
1443 | ialias (omp_get_num_devices) | |
1444 | ialias (omp_get_num_teams) | |
1445 | ialias (omp_get_team_num) | |
1446 | ialias (omp_is_initial_device) |