1 | // Copyright (C) 2001-2003 |
---|
2 | // William E. Kempf |
---|
3 | // |
---|
4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying |
---|
5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
---|
6 | |
---|
7 | #include <boost/thread/detail/config.hpp> |
---|
8 | |
---|
9 | #include <boost/thread/recursive_mutex.hpp> |
---|
10 | #include <boost/thread/xtime.hpp> |
---|
11 | #include <boost/thread/thread.hpp> |
---|
12 | #include <boost/limits.hpp> |
---|
13 | #include <string> |
---|
14 | #include <stdexcept> |
---|
15 | #include <cassert> |
---|
16 | #include "timeconv.inl" |
---|
17 | |
---|
18 | #if defined(BOOST_HAS_WINTHREADS) |
---|
19 | # include <new> |
---|
20 | # include <boost/thread/once.hpp> |
---|
21 | # include <windows.h> |
---|
22 | # include <time.h> |
---|
23 | # include "mutex.inl" |
---|
24 | #elif defined(BOOST_HAS_PTHREADS) |
---|
25 | # include <errno.h> |
---|
26 | #elif defined(BOOST_HAS_MPTASKS) |
---|
27 | # include <MacErrors.h> |
---|
28 | # include "safe.hpp" |
---|
29 | #endif |
---|
30 | |
---|
31 | namespace boost { |
---|
32 | |
---|
33 | #if defined(BOOST_HAS_WINTHREADS) |
---|
34 | |
---|
35 | recursive_mutex::recursive_mutex() |
---|
36 | : m_mutex(0) |
---|
37 | , m_critical_section(false) |
---|
38 | , m_count(0) |
---|
39 | { |
---|
40 | m_critical_section = true; |
---|
41 | if (m_critical_section) |
---|
42 | m_mutex = new_critical_section(); |
---|
43 | else |
---|
44 | m_mutex = new_mutex(0); |
---|
45 | } |
---|
46 | |
---|
47 | recursive_mutex::~recursive_mutex() |
---|
48 | { |
---|
49 | if (m_critical_section) |
---|
50 | delete_critical_section(m_mutex); |
---|
51 | else |
---|
52 | delete_mutex(m_mutex); |
---|
53 | } |
---|
54 | |
---|
55 | void recursive_mutex::do_lock() |
---|
56 | { |
---|
57 | if (m_critical_section) |
---|
58 | wait_critical_section_infinite(m_mutex); |
---|
59 | else |
---|
60 | wait_mutex(m_mutex, INFINITE); |
---|
61 | |
---|
62 | if (++m_count > 1) |
---|
63 | { |
---|
64 | if (m_critical_section) |
---|
65 | release_critical_section(m_mutex); |
---|
66 | else |
---|
67 | release_mutex(m_mutex); |
---|
68 | } |
---|
69 | } |
---|
70 | |
---|
71 | void recursive_mutex::do_unlock() |
---|
72 | { |
---|
73 | if (--m_count == 0) |
---|
74 | { |
---|
75 | if (m_critical_section) |
---|
76 | release_critical_section(m_mutex); |
---|
77 | else |
---|
78 | release_mutex(m_mutex); |
---|
79 | } |
---|
80 | } |
---|
81 | |
---|
82 | void recursive_mutex::do_lock(cv_state& state) |
---|
83 | { |
---|
84 | if (m_critical_section) |
---|
85 | wait_critical_section_infinite(m_mutex); |
---|
86 | else |
---|
87 | wait_mutex(m_mutex, INFINITE); |
---|
88 | |
---|
89 | m_count = state; |
---|
90 | } |
---|
91 | |
---|
92 | void recursive_mutex::do_unlock(cv_state& state) |
---|
93 | { |
---|
94 | state = m_count; |
---|
95 | m_count = 0; |
---|
96 | |
---|
97 | if (m_critical_section) |
---|
98 | release_critical_section(m_mutex); |
---|
99 | else |
---|
100 | release_mutex(m_mutex); |
---|
101 | } |
---|
102 | |
---|
103 | recursive_try_mutex::recursive_try_mutex() |
---|
104 | : m_mutex(0) |
---|
105 | , m_critical_section(false) |
---|
106 | , m_count(0) |
---|
107 | { |
---|
108 | m_critical_section = has_TryEnterCriticalSection(); |
---|
109 | if (m_critical_section) |
---|
110 | m_mutex = new_critical_section(); |
---|
111 | else |
---|
112 | m_mutex = new_mutex(0); |
---|
113 | } |
---|
114 | |
---|
115 | recursive_try_mutex::~recursive_try_mutex() |
---|
116 | { |
---|
117 | if (m_critical_section) |
---|
118 | delete_critical_section(m_mutex); |
---|
119 | else |
---|
120 | delete_mutex(m_mutex); |
---|
121 | } |
---|
122 | |
---|
123 | void recursive_try_mutex::do_lock() |
---|
124 | { |
---|
125 | if (m_critical_section) |
---|
126 | wait_critical_section_infinite(m_mutex); |
---|
127 | else |
---|
128 | wait_mutex(m_mutex, INFINITE); |
---|
129 | |
---|
130 | if (++m_count > 1) |
---|
131 | { |
---|
132 | if (m_critical_section) |
---|
133 | release_critical_section(m_mutex); |
---|
134 | else |
---|
135 | release_mutex(m_mutex); |
---|
136 | } |
---|
137 | } |
---|
138 | |
---|
139 | bool recursive_try_mutex::do_trylock() |
---|
140 | { |
---|
141 | bool res = false; |
---|
142 | if (m_critical_section) |
---|
143 | res = wait_critical_section_try(m_mutex); |
---|
144 | else |
---|
145 | res = wait_mutex(m_mutex, 0) == WAIT_OBJECT_0; |
---|
146 | |
---|
147 | if (res) |
---|
148 | { |
---|
149 | if (++m_count > 1) |
---|
150 | { |
---|
151 | if (m_critical_section) |
---|
152 | release_critical_section(m_mutex); |
---|
153 | else |
---|
154 | release_mutex(m_mutex); |
---|
155 | } |
---|
156 | return true; |
---|
157 | } |
---|
158 | return false; |
---|
159 | } |
---|
160 | |
---|
161 | void recursive_try_mutex::do_unlock() |
---|
162 | { |
---|
163 | if (--m_count == 0) |
---|
164 | { |
---|
165 | if (m_critical_section) |
---|
166 | release_critical_section(m_mutex); |
---|
167 | else |
---|
168 | release_mutex(m_mutex); |
---|
169 | } |
---|
170 | } |
---|
171 | |
---|
172 | void recursive_try_mutex::do_lock(cv_state& state) |
---|
173 | { |
---|
174 | if (m_critical_section) |
---|
175 | wait_critical_section_infinite(m_mutex); |
---|
176 | else |
---|
177 | wait_mutex(m_mutex, INFINITE); |
---|
178 | |
---|
179 | m_count = state; |
---|
180 | } |
---|
181 | |
---|
182 | void recursive_try_mutex::do_unlock(cv_state& state) |
---|
183 | { |
---|
184 | state = m_count; |
---|
185 | m_count = 0; |
---|
186 | |
---|
187 | if (m_critical_section) |
---|
188 | release_critical_section(m_mutex); |
---|
189 | else |
---|
190 | release_mutex(m_mutex); |
---|
191 | } |
---|
192 | |
---|
193 | recursive_timed_mutex::recursive_timed_mutex() |
---|
194 | : m_mutex(0) |
---|
195 | , m_count(0) |
---|
196 | { |
---|
197 | m_mutex = new_mutex(0); |
---|
198 | } |
---|
199 | |
---|
200 | recursive_timed_mutex::~recursive_timed_mutex() |
---|
201 | { |
---|
202 | delete_mutex(m_mutex); |
---|
203 | } |
---|
204 | |
---|
205 | void recursive_timed_mutex::do_lock() |
---|
206 | { |
---|
207 | wait_mutex(m_mutex, INFINITE); |
---|
208 | |
---|
209 | if (++m_count > 1) |
---|
210 | release_mutex(m_mutex); |
---|
211 | } |
---|
212 | |
---|
213 | bool recursive_timed_mutex::do_trylock() |
---|
214 | { |
---|
215 | bool res = wait_mutex(m_mutex, 0) == WAIT_OBJECT_0; |
---|
216 | |
---|
217 | if (res) |
---|
218 | { |
---|
219 | if (++m_count > 1) |
---|
220 | release_mutex(m_mutex); |
---|
221 | return true; |
---|
222 | } |
---|
223 | return false; |
---|
224 | } |
---|
225 | |
---|
226 | bool recursive_timed_mutex::do_timedlock(const xtime& xt) |
---|
227 | { |
---|
228 | for (;;) |
---|
229 | { |
---|
230 | int milliseconds; |
---|
231 | to_duration(xt, milliseconds); |
---|
232 | |
---|
233 | unsigned int res = wait_mutex(m_mutex, milliseconds); |
---|
234 | |
---|
235 | if (res == WAIT_TIMEOUT) |
---|
236 | { |
---|
237 | xtime cur; |
---|
238 | xtime_get(&cur, TIME_UTC); |
---|
239 | if (xtime_cmp(xt, cur) > 0) |
---|
240 | continue; |
---|
241 | } |
---|
242 | |
---|
243 | if (res == WAIT_OBJECT_0) |
---|
244 | { |
---|
245 | if (++m_count > 1) |
---|
246 | release_mutex(m_mutex); |
---|
247 | return true; |
---|
248 | } |
---|
249 | |
---|
250 | return false; |
---|
251 | } |
---|
252 | } |
---|
253 | |
---|
254 | void recursive_timed_mutex::do_unlock() |
---|
255 | { |
---|
256 | if (--m_count == 0) |
---|
257 | release_mutex(m_mutex); |
---|
258 | } |
---|
259 | |
---|
260 | void recursive_timed_mutex::do_lock(cv_state& state) |
---|
261 | { |
---|
262 | wait_mutex(m_mutex, INFINITE); |
---|
263 | |
---|
264 | m_count = state; |
---|
265 | } |
---|
266 | |
---|
267 | void recursive_timed_mutex::do_unlock(cv_state& state) |
---|
268 | { |
---|
269 | state = m_count; |
---|
270 | m_count = 0; |
---|
271 | |
---|
272 | release_mutex(m_mutex); |
---|
273 | } |
---|
274 | |
---|
275 | #elif defined(BOOST_HAS_PTHREADS) |
---|
276 | |
---|
277 | recursive_mutex::recursive_mutex() |
---|
278 | : m_count(0) |
---|
279 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
280 | , m_valid_id(false) |
---|
281 | # endif |
---|
282 | { |
---|
283 | pthread_mutexattr_t attr; |
---|
284 | int res = pthread_mutexattr_init(&attr); |
---|
285 | assert(res == 0); |
---|
286 | |
---|
287 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
288 | res = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); |
---|
289 | assert(res == 0); |
---|
290 | # endif |
---|
291 | |
---|
292 | res = pthread_mutex_init(&m_mutex, &attr); |
---|
293 | { |
---|
294 | int res = 0; |
---|
295 | res = pthread_mutexattr_destroy(&attr); |
---|
296 | assert(res == 0); |
---|
297 | } |
---|
298 | if (res != 0) |
---|
299 | throw thread_resource_error(); |
---|
300 | |
---|
301 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
302 | res = pthread_cond_init(&m_unlocked, 0); |
---|
303 | if (res != 0) |
---|
304 | { |
---|
305 | pthread_mutex_destroy(&m_mutex); |
---|
306 | throw thread_resource_error(); |
---|
307 | } |
---|
308 | # endif |
---|
309 | } |
---|
310 | |
---|
311 | recursive_mutex::~recursive_mutex() |
---|
312 | { |
---|
313 | int res = 0; |
---|
314 | res = pthread_mutex_destroy(&m_mutex); |
---|
315 | assert(res == 0); |
---|
316 | |
---|
317 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
318 | res = pthread_cond_destroy(&m_unlocked); |
---|
319 | assert(res == 0); |
---|
320 | # endif |
---|
321 | } |
---|
322 | |
---|
323 | void recursive_mutex::do_lock() |
---|
324 | { |
---|
325 | int res = 0; |
---|
326 | res = pthread_mutex_lock(&m_mutex); |
---|
327 | assert(res == 0); |
---|
328 | |
---|
329 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
330 | if (++m_count > 1) |
---|
331 | { |
---|
332 | res = pthread_mutex_unlock(&m_mutex); |
---|
333 | assert(res == 0); |
---|
334 | } |
---|
335 | # else |
---|
336 | pthread_t tid = pthread_self(); |
---|
337 | if (m_valid_id && pthread_equal(m_thread_id, tid)) |
---|
338 | ++m_count; |
---|
339 | else |
---|
340 | { |
---|
341 | while (m_valid_id) |
---|
342 | { |
---|
343 | res = pthread_cond_wait(&m_unlocked, &m_mutex); |
---|
344 | assert(res == 0); |
---|
345 | } |
---|
346 | |
---|
347 | m_thread_id = tid; |
---|
348 | m_valid_id = true; |
---|
349 | m_count = 1; |
---|
350 | } |
---|
351 | |
---|
352 | res = pthread_mutex_unlock(&m_mutex); |
---|
353 | assert(res == 0); |
---|
354 | # endif |
---|
355 | } |
---|
356 | |
---|
357 | void recursive_mutex::do_unlock() |
---|
358 | { |
---|
359 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
360 | if (--m_count == 0) |
---|
361 | { |
---|
362 | int res = 0; |
---|
363 | res = pthread_mutex_unlock(&m_mutex); |
---|
364 | assert(res == 0); |
---|
365 | } |
---|
366 | # else |
---|
367 | int res = 0; |
---|
368 | res = pthread_mutex_lock(&m_mutex); |
---|
369 | assert(res == 0); |
---|
370 | |
---|
371 | pthread_t tid = pthread_self(); |
---|
372 | if (m_valid_id && !pthread_equal(m_thread_id, tid)) |
---|
373 | { |
---|
374 | res = pthread_mutex_unlock(&m_mutex); |
---|
375 | assert(res == 0); |
---|
376 | throw lock_error(); |
---|
377 | } |
---|
378 | |
---|
379 | if (--m_count == 0) |
---|
380 | { |
---|
381 | assert(m_valid_id); |
---|
382 | m_valid_id = false; |
---|
383 | |
---|
384 | res = pthread_cond_signal(&m_unlocked); |
---|
385 | assert(res == 0); |
---|
386 | } |
---|
387 | |
---|
388 | res = pthread_mutex_unlock(&m_mutex); |
---|
389 | assert(res == 0); |
---|
390 | # endif |
---|
391 | } |
---|
392 | |
---|
393 | void recursive_mutex::do_lock(cv_state& state) |
---|
394 | { |
---|
395 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
396 | m_count = state.count; |
---|
397 | # else |
---|
398 | int res = 0; |
---|
399 | |
---|
400 | while (m_valid_id) |
---|
401 | { |
---|
402 | res = pthread_cond_wait(&m_unlocked, &m_mutex); |
---|
403 | assert(res == 0); |
---|
404 | } |
---|
405 | |
---|
406 | m_thread_id = pthread_self(); |
---|
407 | m_valid_id = true; |
---|
408 | m_count = state.count; |
---|
409 | |
---|
410 | res = pthread_mutex_unlock(&m_mutex); |
---|
411 | assert(res == 0); |
---|
412 | # endif |
---|
413 | } |
---|
414 | |
---|
415 | void recursive_mutex::do_unlock(cv_state& state) |
---|
416 | { |
---|
417 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
418 | int res = 0; |
---|
419 | res = pthread_mutex_lock(&m_mutex); |
---|
420 | assert(res == 0); |
---|
421 | |
---|
422 | assert(m_valid_id); |
---|
423 | m_valid_id = false; |
---|
424 | |
---|
425 | res = pthread_cond_signal(&m_unlocked); |
---|
426 | assert(res == 0); |
---|
427 | # endif |
---|
428 | |
---|
429 | state.pmutex = &m_mutex; |
---|
430 | state.count = m_count; |
---|
431 | m_count = 0; |
---|
432 | } |
---|
433 | |
---|
434 | recursive_try_mutex::recursive_try_mutex() |
---|
435 | : m_count(0) |
---|
436 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
437 | , m_valid_id(false) |
---|
438 | # endif |
---|
439 | { |
---|
440 | pthread_mutexattr_t attr; |
---|
441 | int res = pthread_mutexattr_init(&attr); |
---|
442 | assert(res == 0); |
---|
443 | |
---|
444 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
445 | res = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); |
---|
446 | assert(res == 0); |
---|
447 | # endif |
---|
448 | |
---|
449 | res = pthread_mutex_init(&m_mutex, &attr); |
---|
450 | { |
---|
451 | int res = 0; |
---|
452 | res = pthread_mutexattr_destroy(&attr); |
---|
453 | assert(res == 0); |
---|
454 | } |
---|
455 | if (res != 0) |
---|
456 | throw thread_resource_error(); |
---|
457 | |
---|
458 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
459 | res = pthread_cond_init(&m_unlocked, 0); |
---|
460 | if (res != 0) |
---|
461 | { |
---|
462 | pthread_mutex_destroy(&m_mutex); |
---|
463 | throw thread_resource_error(); |
---|
464 | } |
---|
465 | # endif |
---|
466 | } |
---|
467 | |
---|
468 | recursive_try_mutex::~recursive_try_mutex() |
---|
469 | { |
---|
470 | int res = 0; |
---|
471 | res = pthread_mutex_destroy(&m_mutex); |
---|
472 | assert(res == 0); |
---|
473 | |
---|
474 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
475 | res = pthread_cond_destroy(&m_unlocked); |
---|
476 | assert(res == 0); |
---|
477 | # endif |
---|
478 | } |
---|
479 | |
---|
480 | void recursive_try_mutex::do_lock() |
---|
481 | { |
---|
482 | int res = 0; |
---|
483 | res = pthread_mutex_lock(&m_mutex); |
---|
484 | assert(res == 0); |
---|
485 | |
---|
486 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
487 | if (++m_count > 1) |
---|
488 | { |
---|
489 | res = pthread_mutex_unlock(&m_mutex); |
---|
490 | assert(res == 0); |
---|
491 | } |
---|
492 | # else |
---|
493 | pthread_t tid = pthread_self(); |
---|
494 | if (m_valid_id && pthread_equal(m_thread_id, tid)) |
---|
495 | ++m_count; |
---|
496 | else |
---|
497 | { |
---|
498 | while (m_valid_id) |
---|
499 | { |
---|
500 | res = pthread_cond_wait(&m_unlocked, &m_mutex); |
---|
501 | assert(res == 0); |
---|
502 | } |
---|
503 | |
---|
504 | m_thread_id = tid; |
---|
505 | m_valid_id = true; |
---|
506 | m_count = 1; |
---|
507 | } |
---|
508 | |
---|
509 | res = pthread_mutex_unlock(&m_mutex); |
---|
510 | assert(res == 0); |
---|
511 | # endif |
---|
512 | } |
---|
513 | |
---|
514 | bool recursive_try_mutex::do_trylock() |
---|
515 | { |
---|
516 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
517 | int res = 0; |
---|
518 | res = pthread_mutex_trylock(&m_mutex); |
---|
519 | assert(res == 0 || res == EBUSY); |
---|
520 | |
---|
521 | if (res == 0) |
---|
522 | { |
---|
523 | if (++m_count > 1) |
---|
524 | { |
---|
525 | res = pthread_mutex_unlock(&m_mutex); |
---|
526 | assert(res == 0); |
---|
527 | } |
---|
528 | return true; |
---|
529 | } |
---|
530 | |
---|
531 | return false; |
---|
532 | # else |
---|
533 | int res = 0; |
---|
534 | res = pthread_mutex_lock(&m_mutex); |
---|
535 | assert(res == 0); |
---|
536 | |
---|
537 | bool ret = false; |
---|
538 | pthread_t tid = pthread_self(); |
---|
539 | if (m_valid_id && pthread_equal(m_thread_id, tid)) |
---|
540 | { |
---|
541 | ++m_count; |
---|
542 | ret = true; |
---|
543 | } |
---|
544 | else if (!m_valid_id) |
---|
545 | { |
---|
546 | m_thread_id = tid; |
---|
547 | m_valid_id = true; |
---|
548 | m_count = 1; |
---|
549 | ret = true; |
---|
550 | } |
---|
551 | |
---|
552 | res = pthread_mutex_unlock(&m_mutex); |
---|
553 | assert(res == 0); |
---|
554 | return ret; |
---|
555 | # endif |
---|
556 | } |
---|
557 | |
---|
558 | void recursive_try_mutex::do_unlock() |
---|
559 | { |
---|
560 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
561 | if (--m_count == 0) |
---|
562 | { |
---|
563 | int res = 0; |
---|
564 | res = pthread_mutex_unlock(&m_mutex); |
---|
565 | assert(res == 0); |
---|
566 | } |
---|
567 | # else |
---|
568 | int res = 0; |
---|
569 | res = pthread_mutex_lock(&m_mutex); |
---|
570 | assert(res == 0); |
---|
571 | |
---|
572 | pthread_t tid = pthread_self(); |
---|
573 | if (m_valid_id && !pthread_equal(m_thread_id, tid)) |
---|
574 | { |
---|
575 | res = pthread_mutex_unlock(&m_mutex); |
---|
576 | assert(res == 0); |
---|
577 | throw lock_error(); |
---|
578 | } |
---|
579 | |
---|
580 | if (--m_count == 0) |
---|
581 | { |
---|
582 | assert(m_valid_id); |
---|
583 | m_valid_id = false; |
---|
584 | |
---|
585 | res = pthread_cond_signal(&m_unlocked); |
---|
586 | assert(res == 0); |
---|
587 | } |
---|
588 | |
---|
589 | res = pthread_mutex_unlock(&m_mutex); |
---|
590 | assert(res == 0); |
---|
591 | # endif |
---|
592 | } |
---|
593 | |
---|
594 | void recursive_try_mutex::do_lock(cv_state& state) |
---|
595 | { |
---|
596 | # if defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
597 | m_count = state.count; |
---|
598 | # else |
---|
599 | int res = 0; |
---|
600 | |
---|
601 | while (m_valid_id) |
---|
602 | { |
---|
603 | res = pthread_cond_wait(&m_unlocked, &m_mutex); |
---|
604 | assert(res == 0); |
---|
605 | } |
---|
606 | |
---|
607 | m_thread_id = pthread_self(); |
---|
608 | m_valid_id = true; |
---|
609 | m_count = state.count; |
---|
610 | |
---|
611 | res = pthread_mutex_unlock(&m_mutex); |
---|
612 | assert(res == 0); |
---|
613 | # endif |
---|
614 | } |
---|
615 | |
---|
616 | void recursive_try_mutex::do_unlock(cv_state& state) |
---|
617 | { |
---|
618 | # if !defined(BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE) |
---|
619 | int res = 0; |
---|
620 | res = pthread_mutex_lock(&m_mutex); |
---|
621 | assert(res == 0); |
---|
622 | |
---|
623 | assert(m_valid_id); |
---|
624 | m_valid_id = false; |
---|
625 | |
---|
626 | res = pthread_cond_signal(&m_unlocked); |
---|
627 | assert(res == 0); |
---|
628 | # endif |
---|
629 | |
---|
630 | state.pmutex = &m_mutex; |
---|
631 | state.count = m_count; |
---|
632 | m_count = 0; |
---|
633 | } |
---|
634 | |
---|
635 | recursive_timed_mutex::recursive_timed_mutex() |
---|
636 | : m_valid_id(false), m_count(0) |
---|
637 | { |
---|
638 | int res = 0; |
---|
639 | res = pthread_mutex_init(&m_mutex, 0); |
---|
640 | if (res != 0) |
---|
641 | throw thread_resource_error(); |
---|
642 | |
---|
643 | res = pthread_cond_init(&m_unlocked, 0); |
---|
644 | if (res != 0) |
---|
645 | { |
---|
646 | pthread_mutex_destroy(&m_mutex); |
---|
647 | throw thread_resource_error(); |
---|
648 | } |
---|
649 | } |
---|
650 | |
---|
651 | recursive_timed_mutex::~recursive_timed_mutex() |
---|
652 | { |
---|
653 | int res = 0; |
---|
654 | res = pthread_mutex_destroy(&m_mutex); |
---|
655 | assert(res == 0); |
---|
656 | |
---|
657 | res = pthread_cond_destroy(&m_unlocked); |
---|
658 | assert(res == 0); |
---|
659 | } |
---|
660 | |
---|
661 | void recursive_timed_mutex::do_lock() |
---|
662 | { |
---|
663 | int res = 0; |
---|
664 | res = pthread_mutex_lock(&m_mutex); |
---|
665 | assert(res == 0); |
---|
666 | |
---|
667 | pthread_t tid = pthread_self(); |
---|
668 | if (m_valid_id && pthread_equal(m_thread_id, tid)) |
---|
669 | ++m_count; |
---|
670 | else |
---|
671 | { |
---|
672 | while (m_valid_id) |
---|
673 | { |
---|
674 | res = pthread_cond_wait(&m_unlocked, &m_mutex); |
---|
675 | assert(res == 0); |
---|
676 | } |
---|
677 | |
---|
678 | m_thread_id = tid; |
---|
679 | m_valid_id = true; |
---|
680 | m_count = 1; |
---|
681 | } |
---|
682 | |
---|
683 | res = pthread_mutex_unlock(&m_mutex); |
---|
684 | assert(res == 0); |
---|
685 | } |
---|
686 | |
---|
687 | bool recursive_timed_mutex::do_trylock() |
---|
688 | { |
---|
689 | int res = 0; |
---|
690 | res = pthread_mutex_lock(&m_mutex); |
---|
691 | assert(res == 0); |
---|
692 | |
---|
693 | bool ret = false; |
---|
694 | pthread_t tid = pthread_self(); |
---|
695 | if (m_valid_id && pthread_equal(m_thread_id, tid)) |
---|
696 | { |
---|
697 | ++m_count; |
---|
698 | ret = true; |
---|
699 | } |
---|
700 | else if (!m_valid_id) |
---|
701 | { |
---|
702 | m_thread_id = tid; |
---|
703 | m_valid_id = true; |
---|
704 | m_count = 1; |
---|
705 | ret = true; |
---|
706 | } |
---|
707 | |
---|
708 | res = pthread_mutex_unlock(&m_mutex); |
---|
709 | assert(res == 0); |
---|
710 | return ret; |
---|
711 | } |
---|
712 | |
---|
713 | bool recursive_timed_mutex::do_timedlock(const xtime& xt) |
---|
714 | { |
---|
715 | int res = 0; |
---|
716 | res = pthread_mutex_lock(&m_mutex); |
---|
717 | assert(res == 0); |
---|
718 | |
---|
719 | bool ret = false; |
---|
720 | pthread_t tid = pthread_self(); |
---|
721 | if (m_valid_id && pthread_equal(m_thread_id, tid)) |
---|
722 | { |
---|
723 | ++m_count; |
---|
724 | ret = true; |
---|
725 | } |
---|
726 | else |
---|
727 | { |
---|
728 | timespec ts; |
---|
729 | to_timespec(xt, ts); |
---|
730 | |
---|
731 | while (m_valid_id) |
---|
732 | { |
---|
733 | res = pthread_cond_timedwait(&m_unlocked, &m_mutex, &ts); |
---|
734 | if (res == ETIMEDOUT) |
---|
735 | break; |
---|
736 | assert(res == 0); |
---|
737 | } |
---|
738 | |
---|
739 | if (!m_valid_id) |
---|
740 | { |
---|
741 | m_thread_id = tid; |
---|
742 | m_valid_id = true; |
---|
743 | m_count = 1; |
---|
744 | ret = true; |
---|
745 | } |
---|
746 | } |
---|
747 | |
---|
748 | res = pthread_mutex_unlock(&m_mutex); |
---|
749 | assert(res == 0); |
---|
750 | return ret; |
---|
751 | } |
---|
752 | |
---|
753 | void recursive_timed_mutex::do_unlock() |
---|
754 | { |
---|
755 | int res = 0; |
---|
756 | res = pthread_mutex_lock(&m_mutex); |
---|
757 | assert(res == 0); |
---|
758 | |
---|
759 | pthread_t tid = pthread_self(); |
---|
760 | if (m_valid_id && !pthread_equal(m_thread_id, tid)) |
---|
761 | { |
---|
762 | res = pthread_mutex_unlock(&m_mutex); |
---|
763 | assert(res == 0); |
---|
764 | throw lock_error(); |
---|
765 | } |
---|
766 | |
---|
767 | if (--m_count == 0) |
---|
768 | { |
---|
769 | assert(m_valid_id); |
---|
770 | m_valid_id = false; |
---|
771 | |
---|
772 | res = pthread_cond_signal(&m_unlocked); |
---|
773 | assert(res == 0); |
---|
774 | } |
---|
775 | |
---|
776 | res = pthread_mutex_unlock(&m_mutex); |
---|
777 | assert(res == 0); |
---|
778 | } |
---|
779 | |
---|
780 | void recursive_timed_mutex::do_lock(cv_state& state) |
---|
781 | { |
---|
782 | int res = 0; |
---|
783 | |
---|
784 | while (m_valid_id) |
---|
785 | { |
---|
786 | res = pthread_cond_wait(&m_unlocked, &m_mutex); |
---|
787 | assert(res == 0); |
---|
788 | } |
---|
789 | |
---|
790 | m_thread_id = pthread_self(); |
---|
791 | m_valid_id = true; |
---|
792 | m_count = state.count; |
---|
793 | |
---|
794 | res = pthread_mutex_unlock(&m_mutex); |
---|
795 | assert(res == 0); |
---|
796 | } |
---|
797 | |
---|
798 | void recursive_timed_mutex::do_unlock(cv_state& state) |
---|
799 | { |
---|
800 | int res = 0; |
---|
801 | res = pthread_mutex_lock(&m_mutex); |
---|
802 | assert(res == 0); |
---|
803 | |
---|
804 | assert(m_valid_id); |
---|
805 | m_valid_id = false; |
---|
806 | |
---|
807 | res = pthread_cond_signal(&m_unlocked); |
---|
808 | assert(res == 0); |
---|
809 | |
---|
810 | state.pmutex = &m_mutex; |
---|
811 | state.count = m_count; |
---|
812 | m_count = 0; |
---|
813 | } |
---|
814 | #elif defined(BOOST_HAS_MPTASKS) |
---|
815 | |
---|
816 | using threads::mac::detail::safe_enter_critical_region; |
---|
817 | |
---|
818 | |
---|
819 | recursive_mutex::recursive_mutex() |
---|
820 | : m_count(0) |
---|
821 | { |
---|
822 | } |
---|
823 | |
---|
824 | recursive_mutex::~recursive_mutex() |
---|
825 | { |
---|
826 | } |
---|
827 | |
---|
828 | void recursive_mutex::do_lock() |
---|
829 | { |
---|
830 | OSStatus lStatus = noErr; |
---|
831 | lStatus = safe_enter_critical_region(m_mutex, kDurationForever, |
---|
832 | m_mutex_mutex); |
---|
833 | assert(lStatus == noErr); |
---|
834 | |
---|
835 | if (++m_count > 1) |
---|
836 | { |
---|
837 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
838 | assert(lStatus == noErr); |
---|
839 | } |
---|
840 | } |
---|
841 | |
---|
842 | void recursive_mutex::do_unlock() |
---|
843 | { |
---|
844 | if (--m_count == 0) |
---|
845 | { |
---|
846 | OSStatus lStatus = noErr; |
---|
847 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
848 | assert(lStatus == noErr); |
---|
849 | } |
---|
850 | } |
---|
851 | |
---|
852 | void recursive_mutex::do_lock(cv_state& state) |
---|
853 | { |
---|
854 | OSStatus lStatus = noErr; |
---|
855 | lStatus = safe_enter_critical_region(m_mutex, kDurationForever, |
---|
856 | m_mutex_mutex); |
---|
857 | assert(lStatus == noErr); |
---|
858 | |
---|
859 | m_count = state; |
---|
860 | } |
---|
861 | |
---|
862 | void recursive_mutex::do_unlock(cv_state& state) |
---|
863 | { |
---|
864 | state = m_count; |
---|
865 | m_count = 0; |
---|
866 | |
---|
867 | OSStatus lStatus = noErr; |
---|
868 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
869 | assert(lStatus == noErr); |
---|
870 | } |
---|
871 | |
---|
872 | recursive_try_mutex::recursive_try_mutex() |
---|
873 | : m_count(0) |
---|
874 | { |
---|
875 | } |
---|
876 | |
---|
877 | recursive_try_mutex::~recursive_try_mutex() |
---|
878 | { |
---|
879 | } |
---|
880 | |
---|
881 | void recursive_try_mutex::do_lock() |
---|
882 | { |
---|
883 | OSStatus lStatus = noErr; |
---|
884 | lStatus = safe_enter_critical_region(m_mutex, kDurationForever, |
---|
885 | m_mutex_mutex); |
---|
886 | assert(lStatus == noErr); |
---|
887 | |
---|
888 | if (++m_count > 1) |
---|
889 | { |
---|
890 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
891 | assert(lStatus == noErr); |
---|
892 | } |
---|
893 | } |
---|
894 | |
---|
895 | bool recursive_try_mutex::do_trylock() |
---|
896 | { |
---|
897 | OSStatus lStatus = noErr; |
---|
898 | lStatus = MPEnterCriticalRegion(m_mutex, kDurationImmediate); |
---|
899 | assert(lStatus == noErr || lStatus == kMPTimeoutErr); |
---|
900 | |
---|
901 | if (lStatus == noErr) |
---|
902 | { |
---|
903 | if (++m_count > 1) |
---|
904 | { |
---|
905 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
906 | assert(lStatus == noErr); |
---|
907 | } |
---|
908 | return true; |
---|
909 | } |
---|
910 | return false; |
---|
911 | } |
---|
912 | |
---|
913 | void recursive_try_mutex::do_unlock() |
---|
914 | { |
---|
915 | if (--m_count == 0) |
---|
916 | { |
---|
917 | OSStatus lStatus = noErr; |
---|
918 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
919 | assert(lStatus == noErr); |
---|
920 | } |
---|
921 | } |
---|
922 | |
---|
923 | void recursive_try_mutex::do_lock(cv_state& state) |
---|
924 | { |
---|
925 | OSStatus lStatus = noErr; |
---|
926 | lStatus = safe_enter_critical_region(m_mutex, kDurationForever, |
---|
927 | m_mutex_mutex); |
---|
928 | assert(lStatus == noErr); |
---|
929 | |
---|
930 | m_count = state; |
---|
931 | } |
---|
932 | |
---|
933 | void recursive_try_mutex::do_unlock(cv_state& state) |
---|
934 | { |
---|
935 | state = m_count; |
---|
936 | m_count = 0; |
---|
937 | |
---|
938 | OSStatus lStatus = noErr; |
---|
939 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
940 | assert(lStatus == noErr); |
---|
941 | } |
---|
942 | |
---|
943 | recursive_timed_mutex::recursive_timed_mutex() |
---|
944 | : m_count(0) |
---|
945 | { |
---|
946 | } |
---|
947 | |
---|
948 | recursive_timed_mutex::~recursive_timed_mutex() |
---|
949 | { |
---|
950 | } |
---|
951 | |
---|
952 | void recursive_timed_mutex::do_lock() |
---|
953 | { |
---|
954 | OSStatus lStatus = noErr; |
---|
955 | lStatus = safe_enter_critical_region(m_mutex, kDurationForever, |
---|
956 | m_mutex_mutex); |
---|
957 | assert(lStatus == noErr); |
---|
958 | |
---|
959 | if (++m_count > 1) |
---|
960 | { |
---|
961 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
962 | assert(lStatus == noErr); |
---|
963 | } |
---|
964 | } |
---|
965 | |
---|
966 | bool recursive_timed_mutex::do_trylock() |
---|
967 | { |
---|
968 | OSStatus lStatus = noErr; |
---|
969 | lStatus = MPEnterCriticalRegion(m_mutex, kDurationImmediate); |
---|
970 | assert(lStatus == noErr || lStatus == kMPTimeoutErr); |
---|
971 | |
---|
972 | if (lStatus == noErr) |
---|
973 | { |
---|
974 | if (++m_count > 1) |
---|
975 | { |
---|
976 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
977 | assert(lStatus == noErr); |
---|
978 | } |
---|
979 | return true; |
---|
980 | } |
---|
981 | return false; |
---|
982 | } |
---|
983 | |
---|
984 | bool recursive_timed_mutex::do_timedlock(const xtime& xt) |
---|
985 | { |
---|
986 | int microseconds; |
---|
987 | to_microduration(xt, microseconds); |
---|
988 | Duration lDuration = kDurationMicrosecond * microseconds; |
---|
989 | |
---|
990 | OSStatus lStatus = noErr; |
---|
991 | lStatus = safe_enter_critical_region(m_mutex, lDuration, m_mutex_mutex); |
---|
992 | assert(lStatus == noErr || lStatus == kMPTimeoutErr); |
---|
993 | |
---|
994 | if (lStatus == noErr) |
---|
995 | { |
---|
996 | if (++m_count > 1) |
---|
997 | { |
---|
998 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
999 | assert(lStatus == noErr); |
---|
1000 | } |
---|
1001 | return true; |
---|
1002 | } |
---|
1003 | return false; |
---|
1004 | } |
---|
1005 | |
---|
1006 | void recursive_timed_mutex::do_unlock() |
---|
1007 | { |
---|
1008 | if (--m_count == 0) |
---|
1009 | { |
---|
1010 | OSStatus lStatus = noErr; |
---|
1011 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
1012 | assert(lStatus == noErr); |
---|
1013 | } |
---|
1014 | } |
---|
1015 | |
---|
1016 | void recursive_timed_mutex::do_lock(cv_state& state) |
---|
1017 | { |
---|
1018 | OSStatus lStatus = noErr; |
---|
1019 | lStatus = safe_enter_critical_region(m_mutex, kDurationForever, |
---|
1020 | m_mutex_mutex); |
---|
1021 | assert(lStatus == noErr); |
---|
1022 | |
---|
1023 | m_count = state; |
---|
1024 | } |
---|
1025 | |
---|
1026 | void recursive_timed_mutex::do_unlock(cv_state& state) |
---|
1027 | { |
---|
1028 | state = m_count; |
---|
1029 | m_count = 0; |
---|
1030 | |
---|
1031 | OSStatus lStatus = noErr; |
---|
1032 | lStatus = MPExitCriticalRegion(m_mutex); |
---|
1033 | assert(lStatus == noErr); |
---|
1034 | } |
---|
1035 | #endif |
---|
1036 | |
---|
1037 | } // namespace boost |
---|
1038 | |
---|
1039 | // Change Log: |
---|
1040 | // 8 Feb 01 WEKEMPF Initial version. |
---|