1 | /* mutex.c |
---|
2 | * |
---|
3 | * $Id$ |
---|
4 | */ |
---|
5 | |
---|
6 | #include <errno.h> |
---|
7 | #include <pthread.h> |
---|
8 | |
---|
9 | #include <rtems/system.h> |
---|
10 | #include <rtems/score/coremutex.h> |
---|
11 | #include <rtems/score/watchdog.h> |
---|
12 | #include <rtems/score/mpci.h> |
---|
13 | #include <rtems/posix/mutex.h> |
---|
14 | #include <rtems/posix/priority.h> |
---|
15 | #include <rtems/posix/time.h> |
---|
16 | |
---|
17 | /*PAGE |
---|
18 | * |
---|
19 | * The default mutex attributes structure. |
---|
20 | */ |
---|
21 | |
---|
22 | const pthread_mutexattr_t _POSIX_Mutex_Default_attributes = { |
---|
23 | TRUE, /* is_initialized */ |
---|
24 | PTHREAD_PROCESS_PRIVATE, /* process_shared */ |
---|
25 | POSIX_SCHEDULER_MINIMUM_PRIORITY, /* prio_ceiling */ |
---|
26 | PTHREAD_PRIO_NONE, /* protocol */ |
---|
27 | FALSE /* recursive */ |
---|
28 | }; |
---|
29 | |
---|
30 | /*PAGE |
---|
31 | * |
---|
32 | * _POSIX_Mutex_Manager_initialization |
---|
33 | * |
---|
34 | * This routine initializes all mutex manager related data structures. |
---|
35 | * |
---|
36 | * Input parameters: |
---|
37 | * maximum_mutexes - maximum configured mutexes |
---|
38 | * |
---|
39 | * Output parameters: NONE |
---|
40 | */ |
---|
41 | |
---|
42 | void _POSIX_Mutex_Manager_initialization( |
---|
43 | unsigned32 maximum_mutexes |
---|
44 | ) |
---|
45 | { |
---|
46 | _Objects_Initialize_information( |
---|
47 | &_POSIX_Mutex_Information, |
---|
48 | OBJECTS_POSIX_MUTEXES, |
---|
49 | TRUE, |
---|
50 | maximum_mutexes, |
---|
51 | sizeof( POSIX_Mutex_Control ), |
---|
52 | FALSE, |
---|
53 | 0, |
---|
54 | FALSE |
---|
55 | ); |
---|
56 | } |
---|
57 | |
---|
58 | /*PAGE |
---|
59 | * |
---|
60 | * 11.3.1 Mutex Initialization Attributes, P1003.1c/Draft 10, p. 81 |
---|
61 | */ |
---|
62 | |
---|
63 | int pthread_mutexattr_init( |
---|
64 | pthread_mutexattr_t *attr |
---|
65 | ) |
---|
66 | { |
---|
67 | if ( !attr ) |
---|
68 | return EINVAL; |
---|
69 | |
---|
70 | *attr = _POSIX_Mutex_Default_attributes; |
---|
71 | return 0; |
---|
72 | } |
---|
73 | |
---|
74 | /*PAGE |
---|
75 | * |
---|
76 | * 11.3.1 Mutex Initialization Attributes, P1003.1c/Draft 10, p. 81 |
---|
77 | */ |
---|
78 | |
---|
79 | int pthread_mutexattr_destroy( |
---|
80 | pthread_mutexattr_t *attr |
---|
81 | ) |
---|
82 | { |
---|
83 | if ( !attr || attr->is_initialized == FALSE ) |
---|
84 | return EINVAL; |
---|
85 | |
---|
86 | attr->is_initialized = FALSE; |
---|
87 | return 0; |
---|
88 | } |
---|
89 | |
---|
90 | /*PAGE |
---|
91 | * |
---|
92 | * 11.3.1 Mutex Initialization Attributes, P1003.1c/Draft 10, p. 81 |
---|
93 | */ |
---|
94 | |
---|
95 | int pthread_mutexattr_getpshared( |
---|
96 | const pthread_mutexattr_t *attr, |
---|
97 | int *pshared |
---|
98 | ) |
---|
99 | { |
---|
100 | if ( !attr ) |
---|
101 | return EINVAL; |
---|
102 | |
---|
103 | *pshared = attr->process_shared; |
---|
104 | return 0; |
---|
105 | } |
---|
106 | |
---|
107 | /*PAGE |
---|
108 | * |
---|
109 | * 11.3.1 Mutex Initialization Attributes, P1003.1c/Draft 10, p. 81 |
---|
110 | */ |
---|
111 | |
---|
112 | int pthread_mutexattr_setpshared( |
---|
113 | pthread_mutexattr_t *attr, |
---|
114 | int pshared |
---|
115 | ) |
---|
116 | { |
---|
117 | if ( !attr ) |
---|
118 | return EINVAL; |
---|
119 | |
---|
120 | attr->process_shared = pshared; |
---|
121 | return 0; |
---|
122 | } |
---|
123 | |
---|
124 | /*PAGE |
---|
125 | * |
---|
126 | * 11.3.2 Initializing and Destroying a Mutex, P1003.1c/Draft 10, p. 87 |
---|
127 | * |
---|
128 | * NOTE: XXX Could be optimized so all the attribute error checking |
---|
129 | * is not performed when attr is NULL. |
---|
130 | */ |
---|
131 | |
---|
132 | int pthread_mutex_init( |
---|
133 | pthread_mutex_t *mutex, |
---|
134 | const pthread_mutexattr_t *attr |
---|
135 | ) |
---|
136 | { |
---|
137 | POSIX_Mutex_Control *the_mutex; |
---|
138 | CORE_mutex_Attributes *the_mutex_attr; |
---|
139 | const pthread_mutexattr_t *the_attr; |
---|
140 | CORE_mutex_Disciplines the_discipline; |
---|
141 | |
---|
142 | if ( attr ) the_attr = attr; |
---|
143 | else the_attr = &_POSIX_Mutex_Default_attributes; |
---|
144 | |
---|
145 | /* |
---|
146 | * XXX: Be careful about attributes when global!!! |
---|
147 | */ |
---|
148 | |
---|
149 | if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED ) |
---|
150 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
151 | |
---|
152 | if ( !the_attr->is_initialized ) |
---|
153 | return EINVAL; |
---|
154 | |
---|
155 | /* |
---|
156 | * Determine the discipline of the mutex |
---|
157 | */ |
---|
158 | |
---|
159 | switch ( the_attr->protocol ) { |
---|
160 | case PTHREAD_PRIO_NONE: |
---|
161 | the_discipline = CORE_MUTEX_DISCIPLINES_FIFO; |
---|
162 | break; |
---|
163 | case PTHREAD_PRIO_INHERIT: |
---|
164 | the_discipline = CORE_MUTEX_DISCIPLINES_PRIORITY_INHERIT; |
---|
165 | break; |
---|
166 | case PTHREAD_PRIO_PROTECT: |
---|
167 | the_discipline = CORE_MUTEX_DISCIPLINES_PRIORITY_CEILING; |
---|
168 | break; |
---|
169 | default: |
---|
170 | return EINVAL; |
---|
171 | } |
---|
172 | |
---|
173 | if ( !_POSIX_Priority_Is_valid( the_attr->prio_ceiling ) ) |
---|
174 | return EINVAL; |
---|
175 | |
---|
176 | _Thread_Disable_dispatch(); |
---|
177 | |
---|
178 | the_mutex = _POSIX_Mutex_Allocate(); |
---|
179 | |
---|
180 | if ( !the_mutex ) { |
---|
181 | _Thread_Enable_dispatch(); |
---|
182 | return ENOMEM; |
---|
183 | } |
---|
184 | |
---|
185 | if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED && |
---|
186 | !( _Objects_MP_Allocate_and_open( &_POSIX_Mutex_Information, 0, |
---|
187 | the_mutex->Object.id, FALSE ) ) ) { |
---|
188 | _POSIX_Mutex_Free( the_mutex ); |
---|
189 | _Thread_Enable_dispatch(); |
---|
190 | return EAGAIN; |
---|
191 | } |
---|
192 | |
---|
193 | the_mutex->process_shared = the_attr->process_shared; |
---|
194 | |
---|
195 | the_mutex_attr = &the_mutex->Mutex.Attributes; |
---|
196 | |
---|
197 | the_mutex_attr->allow_nesting = the_attr->recursive; |
---|
198 | the_mutex_attr->priority_ceiling = |
---|
199 | _POSIX_Priority_To_core( the_attr->prio_ceiling ); |
---|
200 | the_mutex_attr->discipline = the_discipline; |
---|
201 | |
---|
202 | /* |
---|
203 | * Must be initialized to unlocked. |
---|
204 | */ |
---|
205 | |
---|
206 | _CORE_mutex_Initialize( |
---|
207 | &the_mutex->Mutex, |
---|
208 | OBJECTS_POSIX_MUTEXES, |
---|
209 | the_mutex_attr, |
---|
210 | CORE_MUTEX_UNLOCKED, |
---|
211 | 0 /* XXX proxy_extract_callout */ |
---|
212 | ); |
---|
213 | |
---|
214 | _Objects_Open( &_POSIX_Mutex_Information, &the_mutex->Object, 0 ); |
---|
215 | |
---|
216 | *mutex = the_mutex->Object.id; |
---|
217 | |
---|
218 | if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED ) |
---|
219 | _POSIX_Mutex_MP_Send_process_packet( |
---|
220 | POSIX_MUTEX_MP_ANNOUNCE_CREATE, |
---|
221 | the_mutex->Object.id, |
---|
222 | 0, /* Name not used */ |
---|
223 | 0 /* Not used */ |
---|
224 | ); |
---|
225 | |
---|
226 | _Thread_Enable_dispatch(); |
---|
227 | return 0; |
---|
228 | } |
---|
229 | |
---|
230 | /*PAGE |
---|
231 | * |
---|
232 | * 11.3.2 Initializing and Destroying a Mutex, P1003.1c/Draft 10, p. 87 |
---|
233 | */ |
---|
234 | |
---|
235 | int pthread_mutex_destroy( |
---|
236 | pthread_mutex_t *mutex |
---|
237 | ) |
---|
238 | { |
---|
239 | register POSIX_Mutex_Control *the_mutex; |
---|
240 | Objects_Locations location; |
---|
241 | |
---|
242 | the_mutex = _POSIX_Mutex_Get( mutex, &location ); |
---|
243 | switch ( location ) { |
---|
244 | case OBJECTS_ERROR: |
---|
245 | return EINVAL; |
---|
246 | case OBJECTS_REMOTE: |
---|
247 | _Thread_Dispatch(); |
---|
248 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
249 | return EINVAL; |
---|
250 | case OBJECTS_LOCAL: |
---|
251 | /* |
---|
252 | * XXX: There is an error for the mutex being locked |
---|
253 | * or being in use by a condition variable. |
---|
254 | */ |
---|
255 | |
---|
256 | if ( _CORE_mutex_Is_locked( &the_mutex->Mutex ) ) { |
---|
257 | _Thread_Enable_dispatch(); |
---|
258 | return EBUSY; |
---|
259 | } |
---|
260 | |
---|
261 | _Objects_Close( &_POSIX_Mutex_Information, &the_mutex->Object ); |
---|
262 | |
---|
263 | _CORE_mutex_Flush( |
---|
264 | &the_mutex->Mutex, |
---|
265 | _POSIX_Mutex_MP_Send_object_was_deleted, |
---|
266 | EINVAL |
---|
267 | ); |
---|
268 | |
---|
269 | _POSIX_Mutex_Free( the_mutex ); |
---|
270 | |
---|
271 | if ( the_mutex->process_shared == PTHREAD_PROCESS_SHARED ) { |
---|
272 | |
---|
273 | _Objects_MP_Close( &_POSIX_Mutex_Information, the_mutex->Object.id ); |
---|
274 | |
---|
275 | _POSIX_Mutex_MP_Send_process_packet( |
---|
276 | POSIX_MUTEX_MP_ANNOUNCE_DELETE, |
---|
277 | the_mutex->Object.id, |
---|
278 | 0, /* Not used */ |
---|
279 | 0 /* Not used */ |
---|
280 | ); |
---|
281 | } |
---|
282 | _Thread_Enable_dispatch(); |
---|
283 | return 0; |
---|
284 | } |
---|
285 | return POSIX_BOTTOM_REACHED(); |
---|
286 | } |
---|
287 | |
---|
288 | /* |
---|
289 | * _POSIX_Mutex_Lock_support |
---|
290 | * |
---|
291 | * A support routine which implements guts of the blocking, non-blocking, and |
---|
292 | * timed wait version of mutex lock. |
---|
293 | */ |
---|
294 | |
---|
295 | int _POSIX_Mutex_Lock_support( |
---|
296 | pthread_mutex_t *mutex, |
---|
297 | boolean blocking, |
---|
298 | Watchdog_Interval timeout |
---|
299 | ) |
---|
300 | { |
---|
301 | register POSIX_Mutex_Control *the_mutex; |
---|
302 | Objects_Locations location; |
---|
303 | |
---|
304 | the_mutex = _POSIX_Mutex_Get( mutex, &location ); |
---|
305 | switch ( location ) { |
---|
306 | case OBJECTS_ERROR: |
---|
307 | return EINVAL; |
---|
308 | case OBJECTS_REMOTE: |
---|
309 | return _POSIX_Mutex_MP_Send_request_packet( |
---|
310 | POSIX_MUTEX_MP_OBTAIN_REQUEST, |
---|
311 | *mutex, |
---|
312 | 0, /* must define the option set */ |
---|
313 | WATCHDOG_NO_TIMEOUT |
---|
314 | ); |
---|
315 | case OBJECTS_LOCAL: |
---|
316 | _CORE_mutex_Seize( |
---|
317 | &the_mutex->Mutex, |
---|
318 | the_mutex->Object.id, |
---|
319 | blocking, |
---|
320 | timeout |
---|
321 | ); |
---|
322 | _Thread_Enable_dispatch(); |
---|
323 | return _Thread_Executing->Wait.return_code; |
---|
324 | break; |
---|
325 | } |
---|
326 | return POSIX_BOTTOM_REACHED(); |
---|
327 | } |
---|
328 | |
---|
329 | /*PAGE |
---|
330 | * |
---|
331 | * 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93 |
---|
332 | * |
---|
333 | * NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29 |
---|
334 | */ |
---|
335 | |
---|
336 | int pthread_mutex_lock( |
---|
337 | pthread_mutex_t *mutex |
---|
338 | ) |
---|
339 | { |
---|
340 | return _POSIX_Mutex_Lock_support( mutex, TRUE, THREAD_QUEUE_WAIT_FOREVER ); |
---|
341 | } |
---|
342 | |
---|
343 | /*PAGE |
---|
344 | * |
---|
345 | * 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93 |
---|
346 | * |
---|
347 | * NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29 |
---|
348 | */ |
---|
349 | |
---|
350 | int pthread_mutex_trylock( |
---|
351 | pthread_mutex_t *mutex |
---|
352 | ) |
---|
353 | { |
---|
354 | return _POSIX_Mutex_Lock_support( mutex, FALSE, THREAD_QUEUE_WAIT_FOREVER ); |
---|
355 | } |
---|
356 | |
---|
357 | /*PAGE |
---|
358 | * |
---|
359 | * 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93 |
---|
360 | * |
---|
361 | * NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29 |
---|
362 | */ |
---|
363 | |
---|
364 | void POSIX_Threads_mutex_MP_support( |
---|
365 | Thread_Control *the_thread, |
---|
366 | Objects_Id id |
---|
367 | ) |
---|
368 | { |
---|
369 | (void) POSIX_MP_NOT_IMPLEMENTED(); /* XXX: should never get here */ |
---|
370 | } |
---|
371 | |
---|
372 | int pthread_mutex_unlock( |
---|
373 | pthread_mutex_t *mutex |
---|
374 | ) |
---|
375 | { |
---|
376 | register POSIX_Mutex_Control *the_mutex; |
---|
377 | Objects_Locations location; |
---|
378 | |
---|
379 | the_mutex = _POSIX_Mutex_Get( mutex, &location ); |
---|
380 | switch ( location ) { |
---|
381 | case OBJECTS_ERROR: |
---|
382 | return EINVAL; |
---|
383 | case OBJECTS_REMOTE: |
---|
384 | return _POSIX_Mutex_MP_Send_request_packet( |
---|
385 | POSIX_MUTEX_MP_RELEASE_REQUEST, |
---|
386 | *mutex, |
---|
387 | 0, /* Not used */ |
---|
388 | MPCI_DEFAULT_TIMEOUT |
---|
389 | ); |
---|
390 | case OBJECTS_LOCAL: |
---|
391 | _CORE_mutex_Surrender( |
---|
392 | &the_mutex->Mutex, |
---|
393 | the_mutex->Object.id, |
---|
394 | POSIX_Threads_mutex_MP_support |
---|
395 | ); |
---|
396 | _Thread_Enable_dispatch(); |
---|
397 | return _Thread_Executing->Wait.return_code; /* XXX return status */ |
---|
398 | break; |
---|
399 | } |
---|
400 | return POSIX_BOTTOM_REACHED(); |
---|
401 | } |
---|
402 | |
---|
403 | /*PAGE |
---|
404 | * |
---|
405 | * 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93 |
---|
406 | * |
---|
407 | * NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29 |
---|
408 | */ |
---|
409 | |
---|
410 | int pthread_mutex_timedlock( |
---|
411 | pthread_mutex_t *mutex, |
---|
412 | const struct timespec *timeout |
---|
413 | ) |
---|
414 | { |
---|
415 | return _POSIX_Mutex_Lock_support( |
---|
416 | mutex, |
---|
417 | TRUE, |
---|
418 | _POSIX_Time_Spec_to_interval( timeout ) |
---|
419 | ); |
---|
420 | } |
---|
421 | |
---|
422 | /*PAGE |
---|
423 | * |
---|
424 | * 13.6.1 Mutex Initialization Scheduling Attributes, P1003.1c/Draft 10, p. 128 |
---|
425 | */ |
---|
426 | |
---|
427 | int pthread_mutexattr_setprotocol( |
---|
428 | pthread_mutexattr_t *attr, |
---|
429 | int protocol |
---|
430 | ) |
---|
431 | { |
---|
432 | if ( !attr ) |
---|
433 | return EINVAL; |
---|
434 | |
---|
435 | attr->protocol = protocol; |
---|
436 | return 0; |
---|
437 | } |
---|
438 | |
---|
439 | /*PAGE |
---|
440 | * |
---|
441 | * 13.6.1 Mutex Initialization Scheduling Attributes, P1003.1c/Draft 10, p. 128 |
---|
442 | */ |
---|
443 | |
---|
444 | int pthread_mutexattr_getprotocol( |
---|
445 | const pthread_mutexattr_t *attr, |
---|
446 | int *protocol |
---|
447 | ) |
---|
448 | { |
---|
449 | if ( !attr ) |
---|
450 | return EINVAL; |
---|
451 | |
---|
452 | *protocol = attr->protocol; |
---|
453 | return 0; |
---|
454 | } |
---|
455 | |
---|
456 | /*PAGE |
---|
457 | * |
---|
458 | * 13.6.1 Mutex Initialization Scheduling Attributes, P1003.1c/Draft 10, p. 128 |
---|
459 | */ |
---|
460 | |
---|
461 | int pthread_mutexattr_setprioceiling( |
---|
462 | pthread_mutexattr_t *attr, |
---|
463 | int prioceiling |
---|
464 | ) |
---|
465 | { |
---|
466 | if ( !attr ) |
---|
467 | return EINVAL; |
---|
468 | |
---|
469 | if ( !_POSIX_Priority_Is_valid( attr->prio_ceiling ) ) |
---|
470 | return EINVAL; |
---|
471 | |
---|
472 | attr->prio_ceiling = prioceiling; |
---|
473 | return 0; |
---|
474 | } |
---|
475 | |
---|
476 | /*PAGE |
---|
477 | * |
---|
478 | * 13.6.1 Mutex Initialization Scheduling Attributes, P1003.1c/Draft 10, p. 128 |
---|
479 | */ |
---|
480 | |
---|
481 | int pthread_mutexattr_getprioceiling( |
---|
482 | const pthread_mutexattr_t *attr, |
---|
483 | int *prioceiling |
---|
484 | ) |
---|
485 | { |
---|
486 | if ( !attr ) |
---|
487 | return EINVAL; |
---|
488 | |
---|
489 | *prioceiling = attr->prio_ceiling; |
---|
490 | return 0; |
---|
491 | } |
---|
492 | |
---|
493 | /*PAGE |
---|
494 | * |
---|
495 | * 13.6.2 Change the Priority Ceiling of a Mutex, P1003.1c/Draft 10, p. 131 |
---|
496 | */ |
---|
497 | |
---|
498 | int pthread_mutex_setprioceiling( |
---|
499 | pthread_mutex_t *mutex, |
---|
500 | int prioceiling, |
---|
501 | int *old_ceiling |
---|
502 | ) |
---|
503 | { |
---|
504 | register POSIX_Mutex_Control *the_mutex; |
---|
505 | Objects_Locations location; |
---|
506 | Priority_Control the_priority; |
---|
507 | int status; |
---|
508 | |
---|
509 | if ( !_POSIX_Priority_Is_valid( prioceiling ) ) |
---|
510 | return EINVAL; |
---|
511 | |
---|
512 | the_priority = _POSIX_Priority_To_core( prioceiling ); |
---|
513 | |
---|
514 | /* |
---|
515 | * Must acquire the mutex before we can change it's ceiling |
---|
516 | */ |
---|
517 | |
---|
518 | status = pthread_mutex_lock( mutex ); |
---|
519 | if ( status ) |
---|
520 | return status; |
---|
521 | |
---|
522 | the_mutex = _POSIX_Mutex_Get( mutex, &location ); |
---|
523 | switch ( location ) { |
---|
524 | case OBJECTS_ERROR: |
---|
525 | return EINVAL; |
---|
526 | case OBJECTS_REMOTE: |
---|
527 | return POSIX_MP_NOT_IMPLEMENTED(); /* XXX feels questionable */ |
---|
528 | return EINVAL; |
---|
529 | case OBJECTS_LOCAL: |
---|
530 | the_mutex->Mutex.Attributes.priority_ceiling = the_priority; |
---|
531 | _CORE_mutex_Surrender( |
---|
532 | &the_mutex->Mutex, |
---|
533 | the_mutex->Object.id, |
---|
534 | POSIX_Threads_mutex_MP_support |
---|
535 | ); |
---|
536 | _Thread_Enable_dispatch(); |
---|
537 | return 0; |
---|
538 | } |
---|
539 | return POSIX_BOTTOM_REACHED(); |
---|
540 | } |
---|
541 | |
---|
542 | /*PAGE |
---|
543 | * |
---|
544 | * 13.6.2 Change the Priority Ceiling of a Mutex, P1003.1c/Draft 10, p. 131 |
---|
545 | */ |
---|
546 | |
---|
547 | int pthread_mutex_getprioceiling( |
---|
548 | pthread_mutex_t *mutex, |
---|
549 | int *prioceiling |
---|
550 | ) |
---|
551 | { |
---|
552 | register POSIX_Mutex_Control *the_mutex; |
---|
553 | Objects_Locations location; |
---|
554 | |
---|
555 | the_mutex = _POSIX_Mutex_Get( mutex, &location ); |
---|
556 | switch ( location ) { |
---|
557 | case OBJECTS_ERROR: |
---|
558 | return EINVAL; |
---|
559 | case OBJECTS_REMOTE: |
---|
560 | return POSIX_MP_NOT_IMPLEMENTED(); /* XXX feels questionable */ |
---|
561 | case OBJECTS_LOCAL: |
---|
562 | *prioceiling = _POSIX_Priority_From_core( |
---|
563 | the_mutex->Mutex.Attributes.priority_ceiling |
---|
564 | ); |
---|
565 | _Thread_Enable_dispatch(); |
---|
566 | return 0; |
---|
567 | } |
---|
568 | return POSIX_BOTTOM_REACHED(); |
---|
569 | } |
---|