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Commit | Line | Data |
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5624e564 | 1 | /* Copyright (C) 2005-2015 Free Software Foundation, Inc. |
953ff289 DN |
2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
f1f3453e TS |
4 | This file is part of the GNU Offloading and Multi Processing Library |
5 | (libgomp). | |
953ff289 DN |
6 | |
7 | Libgomp is free software; you can redistribute it and/or modify it | |
748086b7 JJ |
8 | under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
953ff289 DN |
11 | |
12 | Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
748086b7 | 14 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
953ff289 DN |
15 | more details. |
16 | ||
748086b7 JJ |
17 | Under Section 7 of GPL version 3, you are granted additional |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
953ff289 | 20 | |
748086b7 JJ |
21 | You should have received a copy of the GNU General Public License and |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
953ff289 DN |
25 | |
26 | /* This file defines the OpenMP internal control variables, and arranges | |
27 | for them to be initialized from environment variables at startup. */ | |
28 | ||
29 | #include "libgomp.h" | |
30 | #include "libgomp_f.h" | |
89b3e3cd | 31 | #include <ctype.h> |
953ff289 | 32 | #include <stdlib.h> |
acf0174b JJ |
33 | #include <stdio.h> |
34 | #ifdef HAVE_INTTYPES_H | |
35 | # include <inttypes.h> /* For PRIu64. */ | |
36 | #endif | |
a1b25e49 PG |
37 | #ifdef STRING_WITH_STRINGS |
38 | # include <string.h> | |
39 | # include <strings.h> | |
40 | #else | |
41 | # ifdef HAVE_STRING_H | |
42 | # include <string.h> | |
43 | # else | |
44 | # ifdef HAVE_STRINGS_H | |
45 | # include <strings.h> | |
46 | # endif | |
47 | # endif | |
48 | #endif | |
d0d1b24d RH |
49 | #include <limits.h> |
50 | #include <errno.h> | |
953ff289 | 51 | |
976e44e3 JJ |
52 | #ifndef HAVE_STRTOULL |
53 | # define strtoull(ptr, eptr, base) strtoul (ptr, eptr, base) | |
54 | #endif | |
953ff289 | 55 | |
a68ab351 JJ |
56 | struct gomp_task_icv gomp_global_icv = { |
57 | .nthreads_var = 1, | |
acf0174b | 58 | .thread_limit_var = UINT_MAX, |
a68ab351 JJ |
59 | .run_sched_var = GFS_DYNAMIC, |
60 | .run_sched_modifier = 1, | |
acf0174b | 61 | .default_device_var = 0, |
a68ab351 | 62 | .dyn_var = false, |
acf0174b JJ |
63 | .nest_var = false, |
64 | .bind_var = omp_proc_bind_false, | |
65 | .target_data = NULL | |
a68ab351 JJ |
66 | }; |
67 | ||
a68ab351 | 68 | unsigned long gomp_max_active_levels_var = INT_MAX; |
acf0174b | 69 | bool gomp_cancel_var = false; |
a68ab351 | 70 | #ifndef HAVE_SYNC_BUILTINS |
acf0174b | 71 | gomp_mutex_t gomp_managed_threads_lock; |
a68ab351 JJ |
72 | #endif |
73 | unsigned long gomp_available_cpus = 1, gomp_managed_threads = 1; | |
74 | unsigned long long gomp_spin_count_var, gomp_throttled_spin_count_var; | |
20906c66 | 75 | unsigned long *gomp_nthreads_var_list, gomp_nthreads_var_list_len; |
acf0174b JJ |
76 | char *gomp_bind_var_list; |
77 | unsigned long gomp_bind_var_list_len; | |
78 | void **gomp_places_list; | |
79 | unsigned long gomp_places_list_len; | |
953ff289 DN |
80 | |
81 | /* Parse the OMP_SCHEDULE environment variable. */ | |
82 | ||
83 | static void | |
84 | parse_schedule (void) | |
85 | { | |
86 | char *env, *end; | |
6acf0b38 | 87 | unsigned long value; |
953ff289 DN |
88 | |
89 | env = getenv ("OMP_SCHEDULE"); | |
90 | if (env == NULL) | |
91 | return; | |
92 | ||
89b3e3cd JJ |
93 | while (isspace ((unsigned char) *env)) |
94 | ++env; | |
95 | if (strncasecmp (env, "static", 6) == 0) | |
953ff289 | 96 | { |
a68ab351 | 97 | gomp_global_icv.run_sched_var = GFS_STATIC; |
953ff289 DN |
98 | env += 6; |
99 | } | |
89b3e3cd | 100 | else if (strncasecmp (env, "dynamic", 7) == 0) |
953ff289 | 101 | { |
a68ab351 | 102 | gomp_global_icv.run_sched_var = GFS_DYNAMIC; |
953ff289 DN |
103 | env += 7; |
104 | } | |
89b3e3cd | 105 | else if (strncasecmp (env, "guided", 6) == 0) |
953ff289 | 106 | { |
a68ab351 | 107 | gomp_global_icv.run_sched_var = GFS_GUIDED; |
953ff289 DN |
108 | env += 6; |
109 | } | |
a68ab351 JJ |
110 | else if (strncasecmp (env, "auto", 4) == 0) |
111 | { | |
112 | gomp_global_icv.run_sched_var = GFS_AUTO; | |
113 | env += 4; | |
114 | } | |
953ff289 DN |
115 | else |
116 | goto unknown; | |
117 | ||
89b3e3cd JJ |
118 | while (isspace ((unsigned char) *env)) |
119 | ++env; | |
953ff289 | 120 | if (*env == '\0') |
fb79f500 JJ |
121 | { |
122 | gomp_global_icv.run_sched_modifier | |
123 | = gomp_global_icv.run_sched_var != GFS_STATIC; | |
124 | return; | |
125 | } | |
89b3e3cd | 126 | if (*env++ != ',') |
953ff289 | 127 | goto unknown; |
89b3e3cd JJ |
128 | while (isspace ((unsigned char) *env)) |
129 | ++env; | |
953ff289 | 130 | if (*env == '\0') |
953ff289 DN |
131 | goto invalid; |
132 | ||
6acf0b38 UB |
133 | errno = 0; |
134 | value = strtoul (env, &end, 10); | |
135 | if (errno) | |
136 | goto invalid; | |
137 | ||
89b3e3cd JJ |
138 | while (isspace ((unsigned char) *end)) |
139 | ++end; | |
953ff289 DN |
140 | if (*end != '\0') |
141 | goto invalid; | |
6acf0b38 | 142 | |
a68ab351 JJ |
143 | if ((int)value != value) |
144 | goto invalid; | |
145 | ||
fb79f500 JJ |
146 | if (value == 0 && gomp_global_icv.run_sched_var != GFS_STATIC) |
147 | value = 1; | |
a68ab351 | 148 | gomp_global_icv.run_sched_modifier = value; |
953ff289 DN |
149 | return; |
150 | ||
151 | unknown: | |
152 | gomp_error ("Unknown value for environment variable OMP_SCHEDULE"); | |
153 | return; | |
154 | ||
155 | invalid: | |
156 | gomp_error ("Invalid value for chunk size in " | |
157 | "environment variable OMP_SCHEDULE"); | |
953ff289 DN |
158 | return; |
159 | } | |
160 | ||
a68ab351 | 161 | /* Parse an unsigned long environment variable. Return true if one was |
953ff289 DN |
162 | present and it was successfully parsed. */ |
163 | ||
164 | static bool | |
80f046cc | 165 | parse_unsigned_long (const char *name, unsigned long *pvalue, bool allow_zero) |
953ff289 DN |
166 | { |
167 | char *env, *end; | |
d0d1b24d | 168 | unsigned long value; |
953ff289 | 169 | |
d0d1b24d | 170 | env = getenv (name); |
953ff289 DN |
171 | if (env == NULL) |
172 | return false; | |
173 | ||
89b3e3cd JJ |
174 | while (isspace ((unsigned char) *env)) |
175 | ++env; | |
953ff289 DN |
176 | if (*env == '\0') |
177 | goto invalid; | |
178 | ||
6acf0b38 | 179 | errno = 0; |
d0d1b24d | 180 | value = strtoul (env, &end, 10); |
80f046cc | 181 | if (errno || (long) value <= 0 - allow_zero) |
6acf0b38 UB |
182 | goto invalid; |
183 | ||
89b3e3cd JJ |
184 | while (isspace ((unsigned char) *end)) |
185 | ++end; | |
953ff289 DN |
186 | if (*end != '\0') |
187 | goto invalid; | |
d0d1b24d RH |
188 | |
189 | *pvalue = value; | |
953ff289 DN |
190 | return true; |
191 | ||
192 | invalid: | |
d0d1b24d | 193 | gomp_error ("Invalid value for environment variable %s", name); |
953ff289 DN |
194 | return false; |
195 | } | |
196 | ||
acf0174b JJ |
197 | /* Parse a positive int environment variable. Return true if one was |
198 | present and it was successfully parsed. */ | |
199 | ||
200 | static bool | |
201 | parse_int (const char *name, int *pvalue, bool allow_zero) | |
202 | { | |
203 | unsigned long value; | |
204 | if (!parse_unsigned_long (name, &value, allow_zero)) | |
205 | return false; | |
206 | if (value > INT_MAX) | |
207 | { | |
208 | gomp_error ("Invalid value for environment variable %s", name); | |
209 | return false; | |
210 | } | |
211 | *pvalue = (int) value; | |
212 | return true; | |
213 | } | |
214 | ||
20906c66 JJ |
215 | /* Parse an unsigned long list environment variable. Return true if one was |
216 | present and it was successfully parsed. */ | |
217 | ||
218 | static bool | |
219 | parse_unsigned_long_list (const char *name, unsigned long *p1stvalue, | |
220 | unsigned long **pvalues, | |
221 | unsigned long *pnvalues) | |
222 | { | |
223 | char *env, *end; | |
224 | unsigned long value, *values = NULL; | |
225 | ||
226 | env = getenv (name); | |
227 | if (env == NULL) | |
228 | return false; | |
229 | ||
230 | while (isspace ((unsigned char) *env)) | |
231 | ++env; | |
232 | if (*env == '\0') | |
233 | goto invalid; | |
234 | ||
235 | errno = 0; | |
236 | value = strtoul (env, &end, 10); | |
237 | if (errno || (long) value <= 0) | |
238 | goto invalid; | |
239 | ||
240 | while (isspace ((unsigned char) *end)) | |
241 | ++end; | |
242 | if (*end != '\0') | |
243 | { | |
244 | if (*end == ',') | |
245 | { | |
246 | unsigned long nvalues = 0, nalloced = 0; | |
247 | ||
248 | do | |
249 | { | |
250 | env = end + 1; | |
251 | if (nvalues == nalloced) | |
252 | { | |
253 | unsigned long *n; | |
254 | nalloced = nalloced ? nalloced * 2 : 16; | |
255 | n = realloc (values, nalloced * sizeof (unsigned long)); | |
256 | if (n == NULL) | |
257 | { | |
258 | free (values); | |
259 | gomp_error ("Out of memory while trying to parse" | |
260 | " environment variable %s", name); | |
261 | return false; | |
262 | } | |
263 | values = n; | |
264 | if (nvalues == 0) | |
265 | values[nvalues++] = value; | |
266 | } | |
267 | ||
268 | while (isspace ((unsigned char) *env)) | |
269 | ++env; | |
270 | if (*env == '\0') | |
271 | goto invalid; | |
272 | ||
273 | errno = 0; | |
274 | value = strtoul (env, &end, 10); | |
275 | if (errno || (long) value <= 0) | |
276 | goto invalid; | |
277 | ||
278 | values[nvalues++] = value; | |
279 | while (isspace ((unsigned char) *end)) | |
280 | ++end; | |
281 | if (*end == '\0') | |
282 | break; | |
283 | if (*end != ',') | |
284 | goto invalid; | |
285 | } | |
286 | while (1); | |
287 | *p1stvalue = values[0]; | |
288 | *pvalues = values; | |
289 | *pnvalues = nvalues; | |
290 | return true; | |
291 | } | |
292 | goto invalid; | |
293 | } | |
294 | ||
295 | *p1stvalue = value; | |
296 | return true; | |
297 | ||
298 | invalid: | |
299 | free (values); | |
300 | gomp_error ("Invalid value for environment variable %s", name); | |
301 | return false; | |
302 | } | |
303 | ||
acf0174b JJ |
304 | /* Parse environment variable set to a boolean or list of omp_proc_bind_t |
305 | enum values. Return true if one was present and it was successfully | |
306 | parsed. */ | |
307 | ||
308 | static bool | |
309 | parse_bind_var (const char *name, char *p1stvalue, | |
310 | char **pvalues, unsigned long *pnvalues) | |
311 | { | |
312 | char *env; | |
c8673881 | 313 | char value = omp_proc_bind_false, *values = NULL; |
acf0174b JJ |
314 | int i; |
315 | static struct proc_bind_kinds | |
316 | { | |
317 | const char name[7]; | |
318 | const char len; | |
319 | omp_proc_bind_t kind; | |
320 | } kinds[] = | |
321 | { | |
322 | { "false", 5, omp_proc_bind_false }, | |
323 | { "true", 4, omp_proc_bind_true }, | |
324 | { "master", 6, omp_proc_bind_master }, | |
325 | { "close", 5, omp_proc_bind_close }, | |
326 | { "spread", 6, omp_proc_bind_spread } | |
327 | }; | |
328 | ||
329 | env = getenv (name); | |
330 | if (env == NULL) | |
331 | return false; | |
332 | ||
333 | while (isspace ((unsigned char) *env)) | |
334 | ++env; | |
335 | if (*env == '\0') | |
336 | goto invalid; | |
337 | ||
338 | for (i = 0; i < 5; i++) | |
339 | if (strncasecmp (env, kinds[i].name, kinds[i].len) == 0) | |
340 | { | |
341 | value = kinds[i].kind; | |
342 | env += kinds[i].len; | |
343 | break; | |
344 | } | |
345 | if (i == 5) | |
346 | goto invalid; | |
347 | ||
348 | while (isspace ((unsigned char) *env)) | |
349 | ++env; | |
350 | if (*env != '\0') | |
351 | { | |
352 | if (*env == ',') | |
353 | { | |
354 | unsigned long nvalues = 0, nalloced = 0; | |
355 | ||
356 | if (value == omp_proc_bind_false | |
357 | || value == omp_proc_bind_true) | |
358 | goto invalid; | |
359 | ||
360 | do | |
361 | { | |
362 | env++; | |
363 | if (nvalues == nalloced) | |
364 | { | |
365 | char *n; | |
366 | nalloced = nalloced ? nalloced * 2 : 16; | |
367 | n = realloc (values, nalloced); | |
368 | if (n == NULL) | |
369 | { | |
370 | free (values); | |
371 | gomp_error ("Out of memory while trying to parse" | |
372 | " environment variable %s", name); | |
373 | return false; | |
374 | } | |
375 | values = n; | |
376 | if (nvalues == 0) | |
377 | values[nvalues++] = value; | |
378 | } | |
379 | ||
380 | while (isspace ((unsigned char) *env)) | |
381 | ++env; | |
382 | if (*env == '\0') | |
383 | goto invalid; | |
384 | ||
385 | for (i = 2; i < 5; i++) | |
386 | if (strncasecmp (env, kinds[i].name, kinds[i].len) == 0) | |
387 | { | |
388 | value = kinds[i].kind; | |
389 | env += kinds[i].len; | |
390 | break; | |
391 | } | |
392 | if (i == 5) | |
393 | goto invalid; | |
394 | ||
395 | values[nvalues++] = value; | |
396 | while (isspace ((unsigned char) *env)) | |
397 | ++env; | |
398 | if (*env == '\0') | |
399 | break; | |
400 | if (*env != ',') | |
401 | goto invalid; | |
402 | } | |
403 | while (1); | |
404 | *p1stvalue = values[0]; | |
405 | *pvalues = values; | |
406 | *pnvalues = nvalues; | |
407 | return true; | |
408 | } | |
409 | goto invalid; | |
410 | } | |
411 | ||
412 | *p1stvalue = value; | |
413 | return true; | |
414 | ||
415 | invalid: | |
416 | free (values); | |
417 | gomp_error ("Invalid value for environment variable %s", name); | |
418 | return false; | |
419 | } | |
420 | ||
421 | static bool | |
422 | parse_one_place (char **envp, bool *negatep, unsigned long *lenp, | |
423 | long *stridep) | |
424 | { | |
425 | char *env = *envp, *start; | |
426 | void *p = gomp_places_list ? gomp_places_list[gomp_places_list_len] : NULL; | |
427 | unsigned long len = 1; | |
428 | long stride = 1; | |
429 | int pass; | |
430 | bool any_negate = false; | |
431 | *negatep = false; | |
432 | while (isspace ((unsigned char) *env)) | |
433 | ++env; | |
434 | if (*env == '!') | |
435 | { | |
436 | *negatep = true; | |
437 | ++env; | |
438 | while (isspace ((unsigned char) *env)) | |
439 | ++env; | |
440 | } | |
441 | if (*env != '{') | |
442 | return false; | |
443 | ++env; | |
444 | while (isspace ((unsigned char) *env)) | |
445 | ++env; | |
446 | start = env; | |
447 | for (pass = 0; pass < (any_negate ? 2 : 1); pass++) | |
448 | { | |
449 | env = start; | |
450 | do | |
451 | { | |
452 | unsigned long this_num, this_len = 1; | |
453 | long this_stride = 1; | |
454 | bool this_negate = (*env == '!'); | |
455 | if (this_negate) | |
456 | { | |
457 | if (gomp_places_list) | |
458 | any_negate = true; | |
459 | ++env; | |
460 | while (isspace ((unsigned char) *env)) | |
461 | ++env; | |
462 | } | |
463 | ||
464 | errno = 0; | |
465 | this_num = strtoul (env, &env, 10); | |
466 | if (errno) | |
467 | return false; | |
468 | while (isspace ((unsigned char) *env)) | |
469 | ++env; | |
470 | if (*env == ':') | |
471 | { | |
472 | ++env; | |
473 | while (isspace ((unsigned char) *env)) | |
474 | ++env; | |
475 | errno = 0; | |
476 | this_len = strtoul (env, &env, 10); | |
477 | if (errno || this_len == 0) | |
478 | return false; | |
479 | while (isspace ((unsigned char) *env)) | |
480 | ++env; | |
481 | if (*env == ':') | |
482 | { | |
483 | ++env; | |
484 | while (isspace ((unsigned char) *env)) | |
485 | ++env; | |
486 | errno = 0; | |
487 | this_stride = strtol (env, &env, 10); | |
488 | if (errno) | |
489 | return false; | |
490 | while (isspace ((unsigned char) *env)) | |
491 | ++env; | |
492 | } | |
493 | } | |
494 | if (this_negate && this_len != 1) | |
495 | return false; | |
496 | if (gomp_places_list && pass == this_negate) | |
497 | { | |
498 | if (this_negate) | |
499 | { | |
500 | if (!gomp_affinity_remove_cpu (p, this_num)) | |
501 | return false; | |
502 | } | |
503 | else if (!gomp_affinity_add_cpus (p, this_num, this_len, | |
504 | this_stride, false)) | |
505 | return false; | |
506 | } | |
507 | if (*env == '}') | |
508 | break; | |
509 | if (*env != ',') | |
510 | return false; | |
511 | ++env; | |
512 | } | |
513 | while (1); | |
514 | } | |
515 | ||
516 | ++env; | |
517 | while (isspace ((unsigned char) *env)) | |
518 | ++env; | |
519 | if (*env == ':') | |
520 | { | |
521 | ++env; | |
522 | while (isspace ((unsigned char) *env)) | |
523 | ++env; | |
524 | errno = 0; | |
525 | len = strtoul (env, &env, 10); | |
526 | if (errno || len == 0 || len >= 65536) | |
527 | return false; | |
528 | while (isspace ((unsigned char) *env)) | |
529 | ++env; | |
530 | if (*env == ':') | |
531 | { | |
532 | ++env; | |
533 | while (isspace ((unsigned char) *env)) | |
534 | ++env; | |
535 | errno = 0; | |
536 | stride = strtol (env, &env, 10); | |
537 | if (errno) | |
538 | return false; | |
539 | while (isspace ((unsigned char) *env)) | |
540 | ++env; | |
541 | } | |
542 | } | |
543 | if (*negatep && len != 1) | |
544 | return false; | |
545 | *envp = env; | |
546 | *lenp = len; | |
547 | *stridep = stride; | |
548 | return true; | |
549 | } | |
550 | ||
551 | static bool | |
f89163fd | 552 | parse_places_var (const char *name, bool ignore) |
acf0174b JJ |
553 | { |
554 | char *env = getenv (name), *end; | |
555 | bool any_negate = false; | |
556 | int level = 0; | |
557 | unsigned long count = 0; | |
558 | if (env == NULL) | |
559 | return false; | |
560 | ||
561 | while (isspace ((unsigned char) *env)) | |
562 | ++env; | |
563 | if (*env == '\0') | |
564 | goto invalid; | |
565 | ||
566 | if (strncasecmp (env, "threads", 7) == 0) | |
567 | { | |
568 | env += 7; | |
569 | level = 1; | |
570 | } | |
571 | else if (strncasecmp (env, "cores", 5) == 0) | |
572 | { | |
573 | env += 5; | |
574 | level = 2; | |
575 | } | |
576 | else if (strncasecmp (env, "sockets", 7) == 0) | |
577 | { | |
578 | env += 7; | |
579 | level = 3; | |
580 | } | |
581 | if (level) | |
582 | { | |
583 | count = ULONG_MAX; | |
584 | while (isspace ((unsigned char) *env)) | |
585 | ++env; | |
586 | if (*env != '\0') | |
587 | { | |
588 | if (*env++ != '(') | |
589 | goto invalid; | |
590 | while (isspace ((unsigned char) *env)) | |
591 | ++env; | |
592 | ||
593 | errno = 0; | |
594 | count = strtoul (env, &end, 10); | |
595 | if (errno) | |
596 | goto invalid; | |
597 | env = end; | |
598 | while (isspace ((unsigned char) *env)) | |
599 | ++env; | |
600 | if (*env != ')') | |
601 | goto invalid; | |
602 | ++env; | |
603 | while (isspace ((unsigned char) *env)) | |
604 | ++env; | |
605 | if (*env != '\0') | |
606 | goto invalid; | |
607 | } | |
f89163fd JJ |
608 | |
609 | if (ignore) | |
610 | return false; | |
611 | ||
acf0174b JJ |
612 | return gomp_affinity_init_level (level, count, false); |
613 | } | |
614 | ||
615 | count = 0; | |
616 | end = env; | |
617 | do | |
618 | { | |
619 | bool negate; | |
620 | unsigned long len; | |
621 | long stride; | |
622 | if (!parse_one_place (&end, &negate, &len, &stride)) | |
623 | goto invalid; | |
624 | if (negate) | |
625 | { | |
626 | if (!any_negate) | |
627 | count++; | |
628 | any_negate = true; | |
629 | } | |
630 | else | |
631 | count += len; | |
632 | if (count > 65536) | |
633 | goto invalid; | |
634 | if (*end == '\0') | |
635 | break; | |
636 | if (*end != ',') | |
637 | goto invalid; | |
638 | end++; | |
639 | } | |
640 | while (1); | |
641 | ||
f89163fd | 642 | if (ignore) |
acf0174b JJ |
643 | return false; |
644 | ||
645 | gomp_places_list_len = 0; | |
646 | gomp_places_list = gomp_affinity_alloc (count, false); | |
647 | if (gomp_places_list == NULL) | |
648 | return false; | |
649 | ||
650 | do | |
651 | { | |
652 | bool negate; | |
653 | unsigned long len; | |
654 | long stride; | |
655 | gomp_affinity_init_place (gomp_places_list[gomp_places_list_len]); | |
656 | if (!parse_one_place (&env, &negate, &len, &stride)) | |
657 | goto invalid; | |
658 | if (negate) | |
659 | { | |
660 | void *p; | |
661 | for (count = 0; count < gomp_places_list_len; count++) | |
662 | if (gomp_affinity_same_place | |
663 | (gomp_places_list[count], | |
664 | gomp_places_list[gomp_places_list_len])) | |
665 | break; | |
666 | if (count == gomp_places_list_len) | |
667 | { | |
668 | gomp_error ("Trying to remove a non-existing place from list " | |
669 | "of places"); | |
670 | goto invalid; | |
671 | } | |
672 | p = gomp_places_list[count]; | |
673 | memmove (&gomp_places_list[count], | |
674 | &gomp_places_list[count + 1], | |
675 | (gomp_places_list_len - count - 1) * sizeof (void *)); | |
676 | --gomp_places_list_len; | |
677 | gomp_places_list[gomp_places_list_len] = p; | |
678 | } | |
679 | else if (len == 1) | |
680 | ++gomp_places_list_len; | |
681 | else | |
682 | { | |
683 | for (count = 0; count < len - 1; count++) | |
684 | if (!gomp_affinity_copy_place | |
685 | (gomp_places_list[gomp_places_list_len + count + 1], | |
686 | gomp_places_list[gomp_places_list_len + count], | |
687 | stride)) | |
688 | goto invalid; | |
689 | gomp_places_list_len += len; | |
690 | } | |
691 | if (*env == '\0') | |
692 | break; | |
693 | env++; | |
694 | } | |
695 | while (1); | |
696 | ||
697 | if (gomp_places_list_len == 0) | |
698 | { | |
699 | gomp_error ("All places have been removed"); | |
700 | goto invalid; | |
701 | } | |
702 | if (!gomp_affinity_finalize_place_list (false)) | |
703 | goto invalid; | |
704 | return true; | |
705 | ||
706 | invalid: | |
707 | free (gomp_places_list); | |
708 | gomp_places_list = NULL; | |
709 | gomp_places_list_len = 0; | |
710 | gomp_error ("Invalid value for environment variable %s", name); | |
711 | return false; | |
712 | } | |
713 | ||
a68ab351 JJ |
714 | /* Parse the OMP_STACKSIZE environment varible. Return true if one was |
715 | present and it was successfully parsed. */ | |
716 | ||
717 | static bool | |
718 | parse_stacksize (const char *name, unsigned long *pvalue) | |
719 | { | |
720 | char *env, *end; | |
721 | unsigned long value, shift = 10; | |
722 | ||
723 | env = getenv (name); | |
724 | if (env == NULL) | |
725 | return false; | |
726 | ||
727 | while (isspace ((unsigned char) *env)) | |
728 | ++env; | |
729 | if (*env == '\0') | |
730 | goto invalid; | |
731 | ||
732 | errno = 0; | |
733 | value = strtoul (env, &end, 10); | |
734 | if (errno) | |
735 | goto invalid; | |
736 | ||
737 | while (isspace ((unsigned char) *end)) | |
738 | ++end; | |
739 | if (*end != '\0') | |
740 | { | |
323ff903 | 741 | switch (tolower ((unsigned char) *end)) |
a68ab351 JJ |
742 | { |
743 | case 'b': | |
744 | shift = 0; | |
745 | break; | |
746 | case 'k': | |
747 | break; | |
748 | case 'm': | |
749 | shift = 20; | |
750 | break; | |
751 | case 'g': | |
752 | shift = 30; | |
753 | break; | |
754 | default: | |
755 | goto invalid; | |
756 | } | |
757 | ++end; | |
758 | while (isspace ((unsigned char) *end)) | |
759 | ++end; | |
760 | if (*end != '\0') | |
761 | goto invalid; | |
762 | } | |
763 | ||
764 | if (((value << shift) >> shift) != value) | |
765 | goto invalid; | |
766 | ||
767 | *pvalue = value << shift; | |
768 | return true; | |
769 | ||
770 | invalid: | |
771 | gomp_error ("Invalid value for environment variable %s", name); | |
772 | return false; | |
773 | } | |
774 | ||
775 | /* Parse the GOMP_SPINCOUNT environment varible. Return true if one was | |
776 | present and it was successfully parsed. */ | |
777 | ||
778 | static bool | |
779 | parse_spincount (const char *name, unsigned long long *pvalue) | |
780 | { | |
781 | char *env, *end; | |
782 | unsigned long long value, mult = 1; | |
783 | ||
784 | env = getenv (name); | |
785 | if (env == NULL) | |
786 | return false; | |
787 | ||
788 | while (isspace ((unsigned char) *env)) | |
789 | ++env; | |
790 | if (*env == '\0') | |
791 | goto invalid; | |
792 | ||
793 | if (strncasecmp (env, "infinite", 8) == 0 | |
794 | || strncasecmp (env, "infinity", 8) == 0) | |
795 | { | |
796 | value = ~0ULL; | |
797 | end = env + 8; | |
798 | goto check_tail; | |
799 | } | |
800 | ||
801 | errno = 0; | |
802 | value = strtoull (env, &end, 10); | |
803 | if (errno) | |
804 | goto invalid; | |
805 | ||
806 | while (isspace ((unsigned char) *end)) | |
807 | ++end; | |
808 | if (*end != '\0') | |
809 | { | |
323ff903 | 810 | switch (tolower ((unsigned char) *end)) |
a68ab351 JJ |
811 | { |
812 | case 'k': | |
813 | mult = 1000LL; | |
814 | break; | |
815 | case 'm': | |
816 | mult = 1000LL * 1000LL; | |
817 | break; | |
818 | case 'g': | |
819 | mult = 1000LL * 1000LL * 1000LL; | |
820 | break; | |
821 | case 't': | |
822 | mult = 1000LL * 1000LL * 1000LL * 1000LL; | |
823 | break; | |
824 | default: | |
825 | goto invalid; | |
826 | } | |
827 | ++end; | |
828 | check_tail: | |
829 | while (isspace ((unsigned char) *end)) | |
830 | ++end; | |
831 | if (*end != '\0') | |
832 | goto invalid; | |
833 | } | |
834 | ||
835 | if (value > ~0ULL / mult) | |
836 | value = ~0ULL; | |
837 | else | |
838 | value *= mult; | |
839 | ||
840 | *pvalue = value; | |
841 | return true; | |
842 | ||
843 | invalid: | |
844 | gomp_error ("Invalid value for environment variable %s", name); | |
845 | return false; | |
846 | } | |
847 | ||
848 | /* Parse a boolean value for environment variable NAME and store the | |
953ff289 DN |
849 | result in VALUE. */ |
850 | ||
851 | static void | |
852 | parse_boolean (const char *name, bool *value) | |
853 | { | |
854 | const char *env; | |
855 | ||
856 | env = getenv (name); | |
857 | if (env == NULL) | |
858 | return; | |
859 | ||
89b3e3cd JJ |
860 | while (isspace ((unsigned char) *env)) |
861 | ++env; | |
862 | if (strncasecmp (env, "true", 4) == 0) | |
863 | { | |
864 | *value = true; | |
865 | env += 4; | |
866 | } | |
867 | else if (strncasecmp (env, "false", 5) == 0) | |
868 | { | |
869 | *value = false; | |
870 | env += 5; | |
871 | } | |
953ff289 | 872 | else |
89b3e3cd JJ |
873 | env = "X"; |
874 | while (isspace ((unsigned char) *env)) | |
875 | ++env; | |
876 | if (*env != '\0') | |
d0d1b24d | 877 | gomp_error ("Invalid value for environment variable %s", name); |
953ff289 DN |
878 | } |
879 | ||
a68ab351 JJ |
880 | /* Parse the OMP_WAIT_POLICY environment variable and store the |
881 | result in gomp_active_wait_policy. */ | |
882 | ||
883 | static int | |
884 | parse_wait_policy (void) | |
885 | { | |
886 | const char *env; | |
887 | int ret = -1; | |
888 | ||
889 | env = getenv ("OMP_WAIT_POLICY"); | |
890 | if (env == NULL) | |
891 | return -1; | |
892 | ||
893 | while (isspace ((unsigned char) *env)) | |
894 | ++env; | |
895 | if (strncasecmp (env, "active", 6) == 0) | |
896 | { | |
897 | ret = 1; | |
898 | env += 6; | |
899 | } | |
900 | else if (strncasecmp (env, "passive", 7) == 0) | |
901 | { | |
902 | ret = 0; | |
903 | env += 7; | |
904 | } | |
905 | else | |
906 | env = "X"; | |
907 | while (isspace ((unsigned char) *env)) | |
908 | ++env; | |
909 | if (*env == '\0') | |
910 | return ret; | |
911 | gomp_error ("Invalid value for environment variable OMP_WAIT_POLICY"); | |
912 | return -1; | |
913 | } | |
914 | ||
a0884cf0 JJ |
915 | /* Parse the GOMP_CPU_AFFINITY environment varible. Return true if one was |
916 | present and it was successfully parsed. */ | |
917 | ||
918 | static bool | |
f89163fd | 919 | parse_affinity (bool ignore) |
a0884cf0 | 920 | { |
acf0174b JJ |
921 | char *env, *end, *start; |
922 | int pass; | |
a0884cf0 | 923 | unsigned long cpu_beg, cpu_end, cpu_stride; |
acf0174b | 924 | size_t count = 0, needed; |
a0884cf0 JJ |
925 | |
926 | env = getenv ("GOMP_CPU_AFFINITY"); | |
927 | if (env == NULL) | |
928 | return false; | |
929 | ||
acf0174b JJ |
930 | start = env; |
931 | for (pass = 0; pass < 2; pass++) | |
a0884cf0 | 932 | { |
acf0174b JJ |
933 | env = start; |
934 | if (pass == 1) | |
a0884cf0 | 935 | { |
f89163fd JJ |
936 | if (ignore) |
937 | return false; | |
938 | ||
acf0174b JJ |
939 | gomp_places_list_len = 0; |
940 | gomp_places_list = gomp_affinity_alloc (count, true); | |
941 | if (gomp_places_list == NULL) | |
942 | return false; | |
943 | } | |
944 | do | |
945 | { | |
946 | while (isspace ((unsigned char) *env)) | |
947 | ++env; | |
948 | ||
949 | errno = 0; | |
950 | cpu_beg = strtoul (env, &end, 0); | |
951 | if (errno || cpu_beg >= 65536) | |
a0884cf0 | 952 | goto invalid; |
acf0174b JJ |
953 | cpu_end = cpu_beg; |
954 | cpu_stride = 1; | |
a0884cf0 JJ |
955 | |
956 | env = end; | |
acf0174b | 957 | if (*env == '-') |
a0884cf0 | 958 | { |
acf0174b JJ |
959 | errno = 0; |
960 | cpu_end = strtoul (++env, &end, 0); | |
961 | if (errno || cpu_end >= 65536 || cpu_end < cpu_beg) | |
a0884cf0 JJ |
962 | goto invalid; |
963 | ||
964 | env = end; | |
acf0174b JJ |
965 | if (*env == ':') |
966 | { | |
967 | errno = 0; | |
968 | cpu_stride = strtoul (++env, &end, 0); | |
969 | if (errno || cpu_stride == 0 || cpu_stride >= 65536) | |
970 | goto invalid; | |
a0884cf0 | 971 | |
acf0174b JJ |
972 | env = end; |
973 | } | |
974 | } | |
a0884cf0 | 975 | |
acf0174b JJ |
976 | needed = (cpu_end - cpu_beg) / cpu_stride + 1; |
977 | if (pass == 0) | |
978 | count += needed; | |
a0884cf0 | 979 | else |
a0884cf0 | 980 | { |
acf0174b JJ |
981 | while (needed--) |
982 | { | |
983 | void *p = gomp_places_list[gomp_places_list_len]; | |
984 | gomp_affinity_init_place (p); | |
985 | if (gomp_affinity_add_cpus (p, cpu_beg, 1, 0, true)) | |
986 | ++gomp_places_list_len; | |
987 | cpu_beg += cpu_stride; | |
988 | } | |
a0884cf0 JJ |
989 | } |
990 | ||
acf0174b JJ |
991 | while (isspace ((unsigned char) *env)) |
992 | ++env; | |
a0884cf0 | 993 | |
acf0174b JJ |
994 | if (*env == ',') |
995 | env++; | |
996 | else if (*env == '\0') | |
997 | break; | |
a0884cf0 | 998 | } |
acf0174b | 999 | while (1); |
a0884cf0 | 1000 | } |
a0884cf0 | 1001 | |
acf0174b JJ |
1002 | if (gomp_places_list_len == 0) |
1003 | { | |
1004 | free (gomp_places_list); | |
1005 | gomp_places_list = NULL; | |
f89163fd | 1006 | return false; |
acf0174b | 1007 | } |
a0884cf0 JJ |
1008 | return true; |
1009 | ||
1010 | invalid: | |
1011 | gomp_error ("Invalid value for enviroment variable GOMP_CPU_AFFINITY"); | |
1012 | return false; | |
1013 | } | |
1014 | ||
acf0174b JJ |
1015 | |
1016 | static void | |
1017 | handle_omp_display_env (unsigned long stacksize, int wait_policy) | |
1018 | { | |
1019 | const char *env; | |
1020 | bool display = false; | |
1021 | bool verbose = false; | |
1022 | int i; | |
1023 | ||
1024 | env = getenv ("OMP_DISPLAY_ENV"); | |
1025 | if (env == NULL) | |
1026 | return; | |
1027 | ||
1028 | while (isspace ((unsigned char) *env)) | |
1029 | ++env; | |
1030 | if (strncasecmp (env, "true", 4) == 0) | |
1031 | { | |
1032 | display = true; | |
1033 | env += 4; | |
1034 | } | |
1035 | else if (strncasecmp (env, "false", 5) == 0) | |
1036 | { | |
1037 | display = false; | |
1038 | env += 5; | |
1039 | } | |
1040 | else if (strncasecmp (env, "verbose", 7) == 0) | |
1041 | { | |
1042 | display = true; | |
1043 | verbose = true; | |
1044 | env += 7; | |
1045 | } | |
1046 | else | |
1047 | env = "X"; | |
1048 | while (isspace ((unsigned char) *env)) | |
1049 | ++env; | |
1050 | if (*env != '\0') | |
1051 | gomp_error ("Invalid value for environment variable OMP_DISPLAY_ENV"); | |
1052 | ||
1053 | if (!display) | |
1054 | return; | |
1055 | ||
1056 | fputs ("\nOPENMP DISPLAY ENVIRONMENT BEGIN\n", stderr); | |
1057 | ||
1058 | fputs (" _OPENMP = '201307'\n", stderr); | |
1059 | fprintf (stderr, " OMP_DYNAMIC = '%s'\n", | |
1060 | gomp_global_icv.dyn_var ? "TRUE" : "FALSE"); | |
1061 | fprintf (stderr, " OMP_NESTED = '%s'\n", | |
1062 | gomp_global_icv.nest_var ? "TRUE" : "FALSE"); | |
1063 | ||
1064 | fprintf (stderr, " OMP_NUM_THREADS = '%lu", gomp_global_icv.nthreads_var); | |
1065 | for (i = 1; i < gomp_nthreads_var_list_len; i++) | |
1066 | fprintf (stderr, ",%lu", gomp_nthreads_var_list[i]); | |
1067 | fputs ("'\n", stderr); | |
1068 | ||
1069 | fprintf (stderr, " OMP_SCHEDULE = '"); | |
1070 | switch (gomp_global_icv.run_sched_var) | |
1071 | { | |
1072 | case GFS_RUNTIME: | |
1073 | fputs ("RUNTIME", stderr); | |
1074 | break; | |
1075 | case GFS_STATIC: | |
1076 | fputs ("STATIC", stderr); | |
1077 | break; | |
1078 | case GFS_DYNAMIC: | |
1079 | fputs ("DYNAMIC", stderr); | |
1080 | break; | |
1081 | case GFS_GUIDED: | |
1082 | fputs ("GUIDED", stderr); | |
1083 | break; | |
1084 | case GFS_AUTO: | |
1085 | fputs ("AUTO", stderr); | |
1086 | break; | |
1087 | } | |
1088 | fputs ("'\n", stderr); | |
1089 | ||
1090 | fputs (" OMP_PROC_BIND = '", stderr); | |
1091 | switch (gomp_global_icv.bind_var) | |
1092 | { | |
1093 | case omp_proc_bind_false: | |
1094 | fputs ("FALSE", stderr); | |
1095 | break; | |
1096 | case omp_proc_bind_true: | |
1097 | fputs ("TRUE", stderr); | |
1098 | break; | |
1099 | case omp_proc_bind_master: | |
1100 | fputs ("MASTER", stderr); | |
1101 | break; | |
1102 | case omp_proc_bind_close: | |
1103 | fputs ("CLOSE", stderr); | |
1104 | break; | |
1105 | case omp_proc_bind_spread: | |
1106 | fputs ("SPREAD", stderr); | |
1107 | break; | |
1108 | } | |
1109 | for (i = 1; i < gomp_bind_var_list_len; i++) | |
1110 | switch (gomp_bind_var_list[i]) | |
1111 | { | |
1112 | case omp_proc_bind_master: | |
1113 | fputs (",MASTER", stderr); | |
1114 | break; | |
1115 | case omp_proc_bind_close: | |
1116 | fputs (",CLOSE", stderr); | |
1117 | break; | |
1118 | case omp_proc_bind_spread: | |
1119 | fputs (",SPREAD", stderr); | |
1120 | break; | |
1121 | } | |
1122 | fputs ("'\n", stderr); | |
1123 | fputs (" OMP_PLACES = '", stderr); | |
1124 | for (i = 0; i < gomp_places_list_len; i++) | |
1125 | { | |
1126 | fputs ("{", stderr); | |
1127 | gomp_affinity_print_place (gomp_places_list[i]); | |
1128 | fputs (i + 1 == gomp_places_list_len ? "}" : "},", stderr); | |
1129 | } | |
1130 | fputs ("'\n", stderr); | |
1131 | ||
1132 | fprintf (stderr, " OMP_STACKSIZE = '%lu'\n", stacksize); | |
1133 | ||
1134 | /* GOMP's default value is actually neither active nor passive. */ | |
1135 | fprintf (stderr, " OMP_WAIT_POLICY = '%s'\n", | |
1136 | wait_policy > 0 ? "ACTIVE" : "PASSIVE"); | |
1137 | fprintf (stderr, " OMP_THREAD_LIMIT = '%u'\n", | |
1138 | gomp_global_icv.thread_limit_var); | |
1139 | fprintf (stderr, " OMP_MAX_ACTIVE_LEVELS = '%lu'\n", | |
1140 | gomp_max_active_levels_var); | |
1141 | ||
1142 | fprintf (stderr, " OMP_CANCELLATION = '%s'\n", | |
1143 | gomp_cancel_var ? "TRUE" : "FALSE"); | |
1144 | fprintf (stderr, " OMP_DEFAULT_DEVICE = '%d'\n", | |
1145 | gomp_global_icv.default_device_var); | |
1146 | ||
1147 | if (verbose) | |
1148 | { | |
1149 | fputs (" GOMP_CPU_AFFINITY = ''\n", stderr); | |
1150 | fprintf (stderr, " GOMP_STACKSIZE = '%lu'\n", stacksize); | |
1151 | #ifdef HAVE_INTTYPES_H | |
1152 | fprintf (stderr, " GOMP_SPINCOUNT = '%"PRIu64"'\n", | |
1153 | (uint64_t) gomp_spin_count_var); | |
1154 | #else | |
1155 | fprintf (stderr, " GOMP_SPINCOUNT = '%lu'\n", | |
1156 | (unsigned long) gomp_spin_count_var); | |
1157 | #endif | |
1158 | } | |
1159 | ||
1160 | fputs ("OPENMP DISPLAY ENVIRONMENT END\n", stderr); | |
1161 | } | |
1162 | ||
1163 | ||
953ff289 DN |
1164 | static void __attribute__((constructor)) |
1165 | initialize_env (void) | |
1166 | { | |
acf0174b | 1167 | unsigned long thread_limit_var, stacksize; |
a68ab351 | 1168 | int wait_policy; |
d0d1b24d | 1169 | |
953ff289 DN |
1170 | /* Do a compile time check that mkomp_h.pl did good job. */ |
1171 | omp_check_defines (); | |
1172 | ||
1173 | parse_schedule (); | |
a68ab351 JJ |
1174 | parse_boolean ("OMP_DYNAMIC", &gomp_global_icv.dyn_var); |
1175 | parse_boolean ("OMP_NESTED", &gomp_global_icv.nest_var); | |
acf0174b JJ |
1176 | parse_boolean ("OMP_CANCELLATION", &gomp_cancel_var); |
1177 | parse_int ("OMP_DEFAULT_DEVICE", &gomp_global_icv.default_device_var, true); | |
80f046cc JJ |
1178 | parse_unsigned_long ("OMP_MAX_ACTIVE_LEVELS", &gomp_max_active_levels_var, |
1179 | true); | |
acf0174b JJ |
1180 | if (parse_unsigned_long ("OMP_THREAD_LIMIT", &thread_limit_var, false)) |
1181 | { | |
1182 | gomp_global_icv.thread_limit_var | |
1183 | = thread_limit_var > INT_MAX ? UINT_MAX : thread_limit_var; | |
1184 | } | |
a68ab351 | 1185 | #ifndef HAVE_SYNC_BUILTINS |
acf0174b | 1186 | gomp_mutex_init (&gomp_managed_threads_lock); |
a68ab351 | 1187 | #endif |
a68ab351 JJ |
1188 | gomp_init_num_threads (); |
1189 | gomp_available_cpus = gomp_global_icv.nthreads_var; | |
20906c66 JJ |
1190 | if (!parse_unsigned_long_list ("OMP_NUM_THREADS", |
1191 | &gomp_global_icv.nthreads_var, | |
1192 | &gomp_nthreads_var_list, | |
1193 | &gomp_nthreads_var_list_len)) | |
a68ab351 | 1194 | gomp_global_icv.nthreads_var = gomp_available_cpus; |
f89163fd JJ |
1195 | bool ignore = false; |
1196 | if (parse_bind_var ("OMP_PROC_BIND", | |
1197 | &gomp_global_icv.bind_var, | |
1198 | &gomp_bind_var_list, | |
1199 | &gomp_bind_var_list_len) | |
1200 | && gomp_global_icv.bind_var == omp_proc_bind_false) | |
1201 | ignore = true; | |
1202 | /* Make sure OMP_PLACES and GOMP_CPU_AFFINITY env vars are always | |
1203 | parsed if present in the environment. If OMP_PROC_BIND was set | |
1204 | explictly to false, don't populate places list though. If places | |
1205 | list was successfully set from OMP_PLACES, only parse but don't process | |
1206 | GOMP_CPU_AFFINITY. If OMP_PROC_BIND was not set in the environment, | |
1207 | default to OMP_PROC_BIND=true if OMP_PLACES or GOMP_CPU_AFFINITY | |
1208 | was successfully parsed into a places list, otherwise to | |
1209 | OMP_PROC_BIND=false. */ | |
1210 | if (parse_places_var ("OMP_PLACES", ignore)) | |
1211 | { | |
1212 | if (gomp_global_icv.bind_var == omp_proc_bind_false) | |
1213 | gomp_global_icv.bind_var = true; | |
1214 | ignore = true; | |
1215 | } | |
1216 | if (parse_affinity (ignore)) | |
1217 | { | |
1218 | if (gomp_global_icv.bind_var == omp_proc_bind_false) | |
1219 | gomp_global_icv.bind_var = true; | |
1220 | ignore = true; | |
1221 | } | |
1222 | if (gomp_global_icv.bind_var != omp_proc_bind_false) | |
a0884cf0 | 1223 | gomp_init_affinity (); |
a68ab351 JJ |
1224 | wait_policy = parse_wait_policy (); |
1225 | if (!parse_spincount ("GOMP_SPINCOUNT", &gomp_spin_count_var)) | |
1226 | { | |
1227 | /* Using a rough estimation of 100000 spins per msec, | |
1228 | use 5 min blocking for OMP_WAIT_POLICY=active, | |
4c698cf8 | 1229 | 3 msec blocking when OMP_WAIT_POLICY is not specificed |
a68ab351 JJ |
1230 | and 0 when OMP_WAIT_POLICY=passive. |
1231 | Depending on the CPU speed, this can be e.g. 5 times longer | |
1232 | or 5 times shorter. */ | |
1233 | if (wait_policy > 0) | |
1234 | gomp_spin_count_var = 30000000000LL; | |
1235 | else if (wait_policy < 0) | |
4c698cf8 | 1236 | gomp_spin_count_var = 300000LL; |
a68ab351 JJ |
1237 | } |
1238 | /* gomp_throttled_spin_count_var is used when there are more libgomp | |
1239 | managed threads than available CPUs. Use very short spinning. */ | |
1240 | if (wait_policy > 0) | |
1241 | gomp_throttled_spin_count_var = 1000LL; | |
1242 | else if (wait_policy < 0) | |
1243 | gomp_throttled_spin_count_var = 100LL; | |
1244 | if (gomp_throttled_spin_count_var > gomp_spin_count_var) | |
1245 | gomp_throttled_spin_count_var = gomp_spin_count_var; | |
d0d1b24d RH |
1246 | |
1247 | /* Not strictly environment related, but ordering constructors is tricky. */ | |
1248 | pthread_attr_init (&gomp_thread_attr); | |
1249 | pthread_attr_setdetachstate (&gomp_thread_attr, PTHREAD_CREATE_DETACHED); | |
1250 | ||
a68ab351 JJ |
1251 | if (parse_stacksize ("OMP_STACKSIZE", &stacksize) |
1252 | || parse_stacksize ("GOMP_STACKSIZE", &stacksize)) | |
d0d1b24d | 1253 | { |
c3b11a40 RH |
1254 | int err; |
1255 | ||
c3b11a40 RH |
1256 | err = pthread_attr_setstacksize (&gomp_thread_attr, stacksize); |
1257 | ||
1258 | #ifdef PTHREAD_STACK_MIN | |
1259 | if (err == EINVAL) | |
d0d1b24d | 1260 | { |
c3b11a40 RH |
1261 | if (stacksize < PTHREAD_STACK_MIN) |
1262 | gomp_error ("Stack size less than minimum of %luk", | |
1263 | PTHREAD_STACK_MIN / 1024ul | |
1264 | + (PTHREAD_STACK_MIN % 1024 != 0)); | |
1265 | else | |
d0d1b24d | 1266 | gomp_error ("Stack size larger than system limit"); |
d0d1b24d | 1267 | } |
c3b11a40 RH |
1268 | else |
1269 | #endif | |
1270 | if (err != 0) | |
1271 | gomp_error ("Stack size change failed: %s", strerror (err)); | |
d0d1b24d | 1272 | } |
acf0174b JJ |
1273 | |
1274 | handle_omp_display_env (stacksize, wait_policy); | |
953ff289 DN |
1275 | } |
1276 | ||
1277 | \f | |
1278 | /* The public OpenMP API routines that access these variables. */ | |
1279 | ||
1280 | void | |
1281 | omp_set_num_threads (int n) | |
1282 | { | |
a68ab351 JJ |
1283 | struct gomp_task_icv *icv = gomp_icv (true); |
1284 | icv->nthreads_var = (n > 0 ? n : 1); | |
953ff289 DN |
1285 | } |
1286 | ||
1287 | void | |
1288 | omp_set_dynamic (int val) | |
1289 | { | |
a68ab351 JJ |
1290 | struct gomp_task_icv *icv = gomp_icv (true); |
1291 | icv->dyn_var = val; | |
953ff289 DN |
1292 | } |
1293 | ||
1294 | int | |
1295 | omp_get_dynamic (void) | |
1296 | { | |
a68ab351 JJ |
1297 | struct gomp_task_icv *icv = gomp_icv (false); |
1298 | return icv->dyn_var; | |
953ff289 DN |
1299 | } |
1300 | ||
1301 | void | |
1302 | omp_set_nested (int val) | |
1303 | { | |
a68ab351 JJ |
1304 | struct gomp_task_icv *icv = gomp_icv (true); |
1305 | icv->nest_var = val; | |
953ff289 DN |
1306 | } |
1307 | ||
1308 | int | |
1309 | omp_get_nested (void) | |
1310 | { | |
a68ab351 JJ |
1311 | struct gomp_task_icv *icv = gomp_icv (false); |
1312 | return icv->nest_var; | |
1313 | } | |
1314 | ||
1315 | void | |
1316 | omp_set_schedule (omp_sched_t kind, int modifier) | |
1317 | { | |
1318 | struct gomp_task_icv *icv = gomp_icv (true); | |
1319 | switch (kind) | |
1320 | { | |
1321 | case omp_sched_static: | |
1322 | if (modifier < 1) | |
1323 | modifier = 0; | |
1324 | icv->run_sched_modifier = modifier; | |
1325 | break; | |
1326 | case omp_sched_dynamic: | |
1327 | case omp_sched_guided: | |
1328 | if (modifier < 1) | |
1329 | modifier = 1; | |
1330 | icv->run_sched_modifier = modifier; | |
1331 | break; | |
1332 | case omp_sched_auto: | |
1333 | break; | |
1334 | default: | |
1335 | return; | |
1336 | } | |
1337 | icv->run_sched_var = kind; | |
1338 | } | |
1339 | ||
1340 | void | |
1341 | omp_get_schedule (omp_sched_t *kind, int *modifier) | |
1342 | { | |
1343 | struct gomp_task_icv *icv = gomp_icv (false); | |
1344 | *kind = icv->run_sched_var; | |
1345 | *modifier = icv->run_sched_modifier; | |
1346 | } | |
1347 | ||
1348 | int | |
1349 | omp_get_max_threads (void) | |
1350 | { | |
1351 | struct gomp_task_icv *icv = gomp_icv (false); | |
1352 | return icv->nthreads_var; | |
1353 | } | |
1354 | ||
1355 | int | |
1356 | omp_get_thread_limit (void) | |
1357 | { | |
acf0174b JJ |
1358 | struct gomp_task_icv *icv = gomp_icv (false); |
1359 | return icv->thread_limit_var > INT_MAX ? INT_MAX : icv->thread_limit_var; | |
a68ab351 JJ |
1360 | } |
1361 | ||
1362 | void | |
1363 | omp_set_max_active_levels (int max_levels) | |
1364 | { | |
80f046cc | 1365 | if (max_levels >= 0) |
a68ab351 JJ |
1366 | gomp_max_active_levels_var = max_levels; |
1367 | } | |
1368 | ||
1369 | int | |
1370 | omp_get_max_active_levels (void) | |
1371 | { | |
1372 | return gomp_max_active_levels_var; | |
953ff289 DN |
1373 | } |
1374 | ||
acf0174b JJ |
1375 | int |
1376 | omp_get_cancellation (void) | |
1377 | { | |
1378 | return gomp_cancel_var; | |
1379 | } | |
1380 | ||
1381 | omp_proc_bind_t | |
1382 | omp_get_proc_bind (void) | |
1383 | { | |
1384 | struct gomp_task_icv *icv = gomp_icv (false); | |
1385 | return icv->bind_var; | |
1386 | } | |
1387 | ||
1388 | void | |
1389 | omp_set_default_device (int device_num) | |
1390 | { | |
1391 | struct gomp_task_icv *icv = gomp_icv (true); | |
1392 | icv->default_device_var = device_num >= 0 ? device_num : 0; | |
1393 | } | |
1394 | ||
1395 | int | |
1396 | omp_get_default_device (void) | |
1397 | { | |
1398 | struct gomp_task_icv *icv = gomp_icv (false); | |
1399 | return icv->default_device_var; | |
1400 | } | |
1401 | ||
1402 | int | |
1403 | omp_get_num_devices (void) | |
1404 | { | |
1405 | return gomp_get_num_devices (); | |
1406 | } | |
1407 | ||
1408 | int | |
1409 | omp_get_num_teams (void) | |
1410 | { | |
1411 | /* Hardcoded to 1 on host, MIC, HSAIL? Maybe variable on PTX. */ | |
1412 | return 1; | |
1413 | } | |
1414 | ||
1415 | int | |
1416 | omp_get_team_num (void) | |
1417 | { | |
1418 | /* Hardcoded to 0 on host, MIC, HSAIL? Maybe variable on PTX. */ | |
1419 | return 0; | |
1420 | } | |
1421 | ||
1422 | int | |
1423 | omp_is_initial_device (void) | |
1424 | { | |
1425 | /* Hardcoded to 1 on host, should be 0 on MIC, HSAIL, PTX. */ | |
1426 | return 1; | |
1427 | } | |
1428 | ||
953ff289 DN |
1429 | ialias (omp_set_dynamic) |
1430 | ialias (omp_set_nested) | |
1431 | ialias (omp_set_num_threads) | |
1432 | ialias (omp_get_dynamic) | |
1433 | ialias (omp_get_nested) | |
a68ab351 JJ |
1434 | ialias (omp_set_schedule) |
1435 | ialias (omp_get_schedule) | |
1436 | ialias (omp_get_max_threads) | |
1437 | ialias (omp_get_thread_limit) | |
1438 | ialias (omp_set_max_active_levels) | |
1439 | ialias (omp_get_max_active_levels) | |
acf0174b JJ |
1440 | ialias (omp_get_cancellation) |
1441 | ialias (omp_get_proc_bind) | |
1442 | ialias (omp_set_default_device) | |
1443 | ialias (omp_get_default_device) | |
1444 | ialias (omp_get_num_devices) | |
1445 | ialias (omp_get_num_teams) | |
1446 | ialias (omp_get_team_num) | |
1447 | ialias (omp_is_initial_device) |