1 | /* |
---|
2 | * $Id$ |
---|
3 | */ |
---|
4 | |
---|
5 | #include <stdarg.h> |
---|
6 | |
---|
7 | #include <errno.h> |
---|
8 | #include <fcntl.h> |
---|
9 | #include <pthread.h> |
---|
10 | #include <semaphore.h> |
---|
11 | #include <limits.h> |
---|
12 | |
---|
13 | #include <rtems/system.h> |
---|
14 | #include <rtems/score/object.h> |
---|
15 | #include <rtems/posix/semaphore.h> |
---|
16 | #include <rtems/posix/time.h> |
---|
17 | #include <rtems/posix/seterr.h> |
---|
18 | |
---|
19 | /*PAGE |
---|
20 | * |
---|
21 | * _POSIX_Semaphore_Manager_initialization |
---|
22 | * |
---|
23 | * This routine initializes all semaphore manager related data structures. |
---|
24 | * |
---|
25 | * Input parameters: |
---|
26 | * maximum_semaphores - maximum configured semaphores |
---|
27 | * |
---|
28 | * Output parameters: NONE |
---|
29 | */ |
---|
30 | |
---|
31 | void _POSIX_Semaphore_Manager_initialization( |
---|
32 | unsigned32 maximum_semaphores |
---|
33 | ) |
---|
34 | { |
---|
35 | _Objects_Initialize_information( |
---|
36 | &_POSIX_Semaphore_Information, |
---|
37 | OBJECTS_POSIX_SEMAPHORES, |
---|
38 | TRUE, |
---|
39 | maximum_semaphores, |
---|
40 | sizeof( POSIX_Semaphore_Control ), |
---|
41 | TRUE, |
---|
42 | _POSIX_PATH_MAX, |
---|
43 | FALSE |
---|
44 | ); |
---|
45 | } |
---|
46 | |
---|
47 | /*PAGE |
---|
48 | * |
---|
49 | * _POSIX_Semaphore_Create_support |
---|
50 | */ |
---|
51 | |
---|
52 | int _POSIX_Semaphore_Create_support( |
---|
53 | const char *name, |
---|
54 | int pshared, |
---|
55 | unsigned int value, |
---|
56 | POSIX_Semaphore_Control **the_sem |
---|
57 | ) |
---|
58 | { |
---|
59 | POSIX_Semaphore_Control *the_semaphore; |
---|
60 | CORE_semaphore_Attributes *the_sem_attr; |
---|
61 | |
---|
62 | _Thread_Disable_dispatch(); |
---|
63 | |
---|
64 | the_semaphore = _POSIX_Semaphore_Allocate(); |
---|
65 | |
---|
66 | if ( !the_semaphore ) { |
---|
67 | _Thread_Enable_dispatch(); |
---|
68 | set_errno_and_return_minus_one( ENOMEM ); |
---|
69 | } |
---|
70 | |
---|
71 | #if defined(RTEMS_MULTIPROCESSING) |
---|
72 | if ( pshared == PTHREAD_PROCESS_SHARED && |
---|
73 | !( _Objects_MP_Allocate_and_open( &_POSIX_Semaphore_Information, 0, |
---|
74 | the_semaphore->Object.id, FALSE ) ) ) { |
---|
75 | _POSIX_Semaphore_Free( the_semaphore ); |
---|
76 | _Thread_Enable_dispatch(); |
---|
77 | set_errno_and_return_minus_one( EAGAIN ); |
---|
78 | } |
---|
79 | #endif |
---|
80 | |
---|
81 | the_semaphore->process_shared = pshared; |
---|
82 | |
---|
83 | if ( name ) { |
---|
84 | the_semaphore->named = TRUE; |
---|
85 | the_semaphore->open_count = 1; |
---|
86 | the_semaphore->linked = TRUE; |
---|
87 | } |
---|
88 | else |
---|
89 | the_semaphore->named = FALSE; |
---|
90 | |
---|
91 | the_sem_attr = &the_semaphore->Semaphore.Attributes; |
---|
92 | |
---|
93 | /* XXX |
---|
94 | * |
---|
95 | * Note should this be based on the current scheduling policy? |
---|
96 | */ |
---|
97 | |
---|
98 | the_sem_attr->discipline = CORE_SEMAPHORE_DISCIPLINES_FIFO; |
---|
99 | |
---|
100 | _CORE_semaphore_Initialize( |
---|
101 | &the_semaphore->Semaphore, |
---|
102 | OBJECTS_POSIX_SEMAPHORES, |
---|
103 | the_sem_attr, |
---|
104 | value, |
---|
105 | 0 /* XXX - proxy_extract_callout is unused */ |
---|
106 | ); |
---|
107 | |
---|
108 | /* XXX - need Names to be a string!!! */ |
---|
109 | _Objects_Open( |
---|
110 | &_POSIX_Semaphore_Information, |
---|
111 | &the_semaphore->Object, |
---|
112 | (char *) name |
---|
113 | ); |
---|
114 | |
---|
115 | *the_sem = the_semaphore; |
---|
116 | |
---|
117 | #if defined(RTEMS_MULTIPROCESSING) |
---|
118 | if ( pshared == PTHREAD_PROCESS_SHARED ) |
---|
119 | _POSIX_Semaphore_MP_Send_process_packet( |
---|
120 | POSIX_SEMAPHORE_MP_ANNOUNCE_CREATE, |
---|
121 | the_semaphore->Object.id, |
---|
122 | (char *) name, |
---|
123 | 0 /* proxy id - Not used */ |
---|
124 | ); |
---|
125 | #endif |
---|
126 | |
---|
127 | _Thread_Enable_dispatch(); |
---|
128 | return 0; |
---|
129 | } |
---|
130 | |
---|
131 | |
---|
132 | /*PAGE |
---|
133 | * |
---|
134 | * 11.2.1 Initialize an Unnamed Semaphore, P1003.1b-1993, p.219 |
---|
135 | */ |
---|
136 | |
---|
137 | int sem_init( |
---|
138 | sem_t *sem, |
---|
139 | int pshared, |
---|
140 | unsigned int value |
---|
141 | ) |
---|
142 | { |
---|
143 | int status; |
---|
144 | POSIX_Semaphore_Control *the_semaphore; |
---|
145 | |
---|
146 | status = _POSIX_Semaphore_Create_support( |
---|
147 | NULL, |
---|
148 | pshared, |
---|
149 | value, |
---|
150 | &the_semaphore |
---|
151 | ); |
---|
152 | |
---|
153 | if ( status != -1 ) |
---|
154 | *sem = the_semaphore->Object.id; |
---|
155 | |
---|
156 | return status; |
---|
157 | } |
---|
158 | |
---|
159 | /*PAGE |
---|
160 | * |
---|
161 | * 11.2.2 Destroy an Unnamed Semaphore, P1003.1b-1993, p.220 |
---|
162 | */ |
---|
163 | |
---|
164 | int sem_destroy( |
---|
165 | sem_t *sem |
---|
166 | ) |
---|
167 | { |
---|
168 | register POSIX_Semaphore_Control *the_semaphore; |
---|
169 | Objects_Locations location; |
---|
170 | |
---|
171 | the_semaphore = _POSIX_Semaphore_Get( sem, &location ); |
---|
172 | switch ( location ) { |
---|
173 | case OBJECTS_ERROR: |
---|
174 | set_errno_and_return_minus_one( EINVAL ); |
---|
175 | case OBJECTS_REMOTE: |
---|
176 | _Thread_Dispatch(); |
---|
177 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
178 | set_errno_and_return_minus_one( EINVAL ); |
---|
179 | case OBJECTS_LOCAL: |
---|
180 | /* |
---|
181 | * Undefined operation on a named semaphore. |
---|
182 | */ |
---|
183 | |
---|
184 | if ( the_semaphore->named == TRUE ) { |
---|
185 | set_errno_and_return_minus_one( EINVAL ); |
---|
186 | } |
---|
187 | |
---|
188 | _Objects_Close( &_POSIX_Semaphore_Information, &the_semaphore->Object ); |
---|
189 | |
---|
190 | _CORE_semaphore_Flush( |
---|
191 | &the_semaphore->Semaphore, |
---|
192 | #if defined(RTEMS_MULTIPROCESSING) |
---|
193 | _POSIX_Semaphore_MP_Send_object_was_deleted, |
---|
194 | #else |
---|
195 | NULL, |
---|
196 | #endif |
---|
197 | -1 /* XXX should also seterrno -> EINVAL */ |
---|
198 | ); |
---|
199 | |
---|
200 | _POSIX_Semaphore_Free( the_semaphore ); |
---|
201 | |
---|
202 | #if defined(RTEMS_MULTIPROCESSING) |
---|
203 | if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) { |
---|
204 | |
---|
205 | _Objects_MP_Close( |
---|
206 | &_POSIX_Semaphore_Information, |
---|
207 | the_semaphore->Object.id |
---|
208 | ); |
---|
209 | |
---|
210 | _POSIX_Semaphore_MP_Send_process_packet( |
---|
211 | POSIX_SEMAPHORE_MP_ANNOUNCE_DELETE, |
---|
212 | the_semaphore->Object.id, |
---|
213 | 0, /* Not used */ |
---|
214 | 0 /* Not used */ |
---|
215 | ); |
---|
216 | } |
---|
217 | #endif |
---|
218 | _Thread_Enable_dispatch(); |
---|
219 | return 0; |
---|
220 | } |
---|
221 | return POSIX_BOTTOM_REACHED(); |
---|
222 | } |
---|
223 | |
---|
224 | /*PAGE |
---|
225 | * |
---|
226 | * 11.2.3 Initialize/Open a Named Semaphore, P1003.1b-1993, p.221 |
---|
227 | * |
---|
228 | * NOTE: When oflag is O_CREAT, then optional third and fourth |
---|
229 | * parameters must be present. |
---|
230 | */ |
---|
231 | |
---|
232 | sem_t *sem_open( |
---|
233 | const char *name, |
---|
234 | int oflag, |
---|
235 | ... |
---|
236 | /* mode_t mode, */ |
---|
237 | /* unsigned int value */ |
---|
238 | ) |
---|
239 | { |
---|
240 | va_list arg; |
---|
241 | mode_t mode; |
---|
242 | unsigned int value; |
---|
243 | int status; |
---|
244 | Objects_Id the_semaphore_id; |
---|
245 | POSIX_Semaphore_Control *the_semaphore; |
---|
246 | |
---|
247 | |
---|
248 | if ( oflag & O_CREAT ) { |
---|
249 | va_start(arg, oflag); |
---|
250 | mode = (mode_t) va_arg( arg, mode_t * ); |
---|
251 | value = (unsigned int) va_arg( arg, unsigned int * ); |
---|
252 | va_end(arg); |
---|
253 | } |
---|
254 | |
---|
255 | status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id ); |
---|
256 | |
---|
257 | /* |
---|
258 | * If the name to id translation worked, then the semaphore exists |
---|
259 | * and we can just return a pointer to the id. Otherwise we may |
---|
260 | * need to check to see if this is a "semaphore does not exist" |
---|
261 | * or some other miscellaneous error on the name. |
---|
262 | */ |
---|
263 | |
---|
264 | if ( status ) { |
---|
265 | |
---|
266 | if ( status == EINVAL ) { /* name -> ID translation failed */ |
---|
267 | if ( !(oflag & O_CREAT) ) { /* willing to create it? */ |
---|
268 | set_errno_and_return_minus_one_cast( ENOENT, sem_t * ); |
---|
269 | } |
---|
270 | /* we are willing to create it */ |
---|
271 | } |
---|
272 | /* some type of error */ |
---|
273 | set_errno_and_return_minus_one_cast( status, sem_t * ); |
---|
274 | |
---|
275 | } else { /* name -> ID translation succeeded */ |
---|
276 | |
---|
277 | if ( (oflag & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL) ) { |
---|
278 | set_errno_and_return_minus_one_cast( EEXIST, sem_t * ); |
---|
279 | } |
---|
280 | |
---|
281 | /* |
---|
282 | * XXX In this case we need to do an ID->pointer conversion to |
---|
283 | * check the mode. This is probably a good place for a subroutine. |
---|
284 | */ |
---|
285 | |
---|
286 | the_semaphore->open_count += 1; |
---|
287 | |
---|
288 | return (sem_t *)&the_semaphore->Object.id; |
---|
289 | |
---|
290 | } |
---|
291 | |
---|
292 | /* XXX verify this comment... |
---|
293 | * |
---|
294 | * At this point, the semaphore does not exist and everything has been |
---|
295 | * checked. We should go ahead and create a semaphore. |
---|
296 | */ |
---|
297 | |
---|
298 | status = _POSIX_Semaphore_Create_support( |
---|
299 | name, |
---|
300 | TRUE, /* shared across processes */ |
---|
301 | value, |
---|
302 | &the_semaphore |
---|
303 | ); |
---|
304 | |
---|
305 | if ( status == -1 ) |
---|
306 | return (sem_t *) -1; |
---|
307 | |
---|
308 | return (sem_t *) &the_semaphore->Object.id; |
---|
309 | |
---|
310 | } |
---|
311 | |
---|
312 | /*PAGE |
---|
313 | * |
---|
314 | * _POSIX_Semaphore_Delete |
---|
315 | */ |
---|
316 | |
---|
317 | void _POSIX_Semaphore_Delete( |
---|
318 | POSIX_Semaphore_Control *the_semaphore |
---|
319 | ) |
---|
320 | { |
---|
321 | if ( !the_semaphore->linked && !the_semaphore->open_count ) { |
---|
322 | _POSIX_Semaphore_Free( the_semaphore ); |
---|
323 | |
---|
324 | #if defined(RTEMS_MULTIPROCESSING) |
---|
325 | if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) { |
---|
326 | |
---|
327 | _Objects_MP_Close( |
---|
328 | &_POSIX_Semaphore_Information, |
---|
329 | the_semaphore->Object.id |
---|
330 | ); |
---|
331 | |
---|
332 | _POSIX_Semaphore_MP_Send_process_packet( |
---|
333 | POSIX_SEMAPHORE_MP_ANNOUNCE_DELETE, |
---|
334 | the_semaphore->Object.id, |
---|
335 | 0, /* Not used */ |
---|
336 | 0 /* Not used */ |
---|
337 | ); |
---|
338 | } |
---|
339 | #endif |
---|
340 | |
---|
341 | } |
---|
342 | } |
---|
343 | |
---|
344 | /*PAGE |
---|
345 | * |
---|
346 | * 11.2.4 Close a Named Semaphore, P1003.1b-1993, p.224 |
---|
347 | */ |
---|
348 | |
---|
349 | int sem_close( |
---|
350 | sem_t *sem |
---|
351 | ) |
---|
352 | { |
---|
353 | register POSIX_Semaphore_Control *the_semaphore; |
---|
354 | Objects_Locations location; |
---|
355 | |
---|
356 | the_semaphore = _POSIX_Semaphore_Get( sem, &location ); |
---|
357 | switch ( location ) { |
---|
358 | case OBJECTS_ERROR: |
---|
359 | set_errno_and_return_minus_one( EINVAL ); |
---|
360 | case OBJECTS_REMOTE: |
---|
361 | _Thread_Dispatch(); |
---|
362 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
363 | set_errno_and_return_minus_one( EINVAL ); |
---|
364 | case OBJECTS_LOCAL: |
---|
365 | the_semaphore->open_count -= 1; |
---|
366 | _POSIX_Semaphore_Delete( the_semaphore ); |
---|
367 | _Thread_Enable_dispatch(); |
---|
368 | return 0; |
---|
369 | } |
---|
370 | return POSIX_BOTTOM_REACHED(); |
---|
371 | } |
---|
372 | |
---|
373 | /*PAGE |
---|
374 | * |
---|
375 | * 11.2.5 Remove a Named Semaphore, P1003.1b-1993, p.225 |
---|
376 | */ |
---|
377 | |
---|
378 | int sem_unlink( |
---|
379 | const char *name |
---|
380 | ) |
---|
381 | { |
---|
382 | int status; |
---|
383 | register POSIX_Semaphore_Control *the_semaphore; |
---|
384 | Objects_Id the_semaphore_id; |
---|
385 | Objects_Locations location; |
---|
386 | |
---|
387 | status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id ); |
---|
388 | |
---|
389 | if ( !status ) |
---|
390 | set_errno_and_return_minus_one( status ); |
---|
391 | |
---|
392 | the_semaphore = _POSIX_Semaphore_Get( &the_semaphore_id, &location ); |
---|
393 | switch ( location ) { |
---|
394 | case OBJECTS_ERROR: |
---|
395 | set_errno_and_return_minus_one( EINVAL ); |
---|
396 | case OBJECTS_REMOTE: |
---|
397 | _Thread_Dispatch(); |
---|
398 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
399 | set_errno_and_return_minus_one( EINVAL ); |
---|
400 | case OBJECTS_LOCAL: |
---|
401 | |
---|
402 | #if defined(RTEMS_MULTIPROCESSING) |
---|
403 | if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) { |
---|
404 | _Objects_MP_Close( |
---|
405 | &_POSIX_Semaphore_Information, |
---|
406 | the_semaphore->Object.id |
---|
407 | ); |
---|
408 | } |
---|
409 | #endif |
---|
410 | |
---|
411 | the_semaphore->linked = FALSE; |
---|
412 | |
---|
413 | _POSIX_Semaphore_Delete( the_semaphore ); |
---|
414 | |
---|
415 | _Thread_Enable_dispatch(); |
---|
416 | return 0; |
---|
417 | } |
---|
418 | return POSIX_BOTTOM_REACHED(); |
---|
419 | } |
---|
420 | |
---|
421 | /*PAGE |
---|
422 | * |
---|
423 | * _POSIX_Semaphore_Wait_support |
---|
424 | */ |
---|
425 | |
---|
426 | int _POSIX_Semaphore_Wait_support( |
---|
427 | sem_t *sem, |
---|
428 | boolean blocking, |
---|
429 | Watchdog_Interval timeout |
---|
430 | ) |
---|
431 | { |
---|
432 | register POSIX_Semaphore_Control *the_semaphore; |
---|
433 | Objects_Locations location; |
---|
434 | |
---|
435 | the_semaphore = _POSIX_Semaphore_Get( sem, &location ); |
---|
436 | switch ( location ) { |
---|
437 | case OBJECTS_ERROR: |
---|
438 | set_errno_and_return_minus_one( EINVAL ); |
---|
439 | case OBJECTS_REMOTE: |
---|
440 | _Thread_Dispatch(); |
---|
441 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
442 | set_errno_and_return_minus_one( EINVAL ); |
---|
443 | case OBJECTS_LOCAL: |
---|
444 | _CORE_semaphore_Seize( |
---|
445 | &the_semaphore->Semaphore, |
---|
446 | the_semaphore->Object.id, |
---|
447 | blocking, |
---|
448 | timeout |
---|
449 | ); |
---|
450 | _Thread_Enable_dispatch(); |
---|
451 | return _Thread_Executing->Wait.return_code; |
---|
452 | } |
---|
453 | return POSIX_BOTTOM_REACHED(); |
---|
454 | } |
---|
455 | |
---|
456 | /*PAGE |
---|
457 | * |
---|
458 | * 11.2.6 Lock a Semaphore, P1003.1b-1993, p.226 |
---|
459 | * |
---|
460 | * NOTE: P1003.4b/D8 adds sem_timedwait(), p. 27 |
---|
461 | */ |
---|
462 | |
---|
463 | int sem_wait( |
---|
464 | sem_t *sem |
---|
465 | ) |
---|
466 | { |
---|
467 | return _POSIX_Semaphore_Wait_support( sem, TRUE, THREAD_QUEUE_WAIT_FOREVER ); |
---|
468 | } |
---|
469 | |
---|
470 | /*PAGE |
---|
471 | * |
---|
472 | * 11.2.6 Lock a Semaphore, P1003.1b-1993, p.226 |
---|
473 | * |
---|
474 | * NOTE: P1003.4b/D8 adds sem_timedwait(), p. 27 |
---|
475 | */ |
---|
476 | |
---|
477 | int sem_trywait( |
---|
478 | sem_t *sem |
---|
479 | ) |
---|
480 | { |
---|
481 | return _POSIX_Semaphore_Wait_support( sem, FALSE, THREAD_QUEUE_WAIT_FOREVER ); |
---|
482 | } |
---|
483 | |
---|
484 | /*PAGE |
---|
485 | * |
---|
486 | * 11.2.6 Lock a Semaphore, P1003.1b-1993, p.226 |
---|
487 | * |
---|
488 | * NOTE: P1003.4b/D8 adds sem_timedwait(), p. 27 |
---|
489 | */ |
---|
490 | |
---|
491 | int sem_timedwait( |
---|
492 | sem_t *sem, |
---|
493 | const struct timespec *timeout |
---|
494 | ) |
---|
495 | { |
---|
496 | return _POSIX_Semaphore_Wait_support( |
---|
497 | sem, |
---|
498 | TRUE, |
---|
499 | _POSIX_Timespec_to_interval( timeout ) |
---|
500 | ); |
---|
501 | } |
---|
502 | |
---|
503 | /*PAGE |
---|
504 | * |
---|
505 | * 11.2.7 Unlock a Semaphore, P1003.1b-1993, p.227 |
---|
506 | */ |
---|
507 | |
---|
508 | void POSIX_Semaphore_MP_support( |
---|
509 | Thread_Control *the_thread, |
---|
510 | Objects_Id id |
---|
511 | ) |
---|
512 | { |
---|
513 | (void) POSIX_MP_NOT_IMPLEMENTED(); |
---|
514 | } |
---|
515 | |
---|
516 | |
---|
517 | int sem_post( |
---|
518 | sem_t *sem |
---|
519 | ) |
---|
520 | { |
---|
521 | register POSIX_Semaphore_Control *the_semaphore; |
---|
522 | Objects_Locations location; |
---|
523 | |
---|
524 | the_semaphore = _POSIX_Semaphore_Get( sem, &location ); |
---|
525 | switch ( location ) { |
---|
526 | case OBJECTS_ERROR: |
---|
527 | set_errno_and_return_minus_one( EINVAL ); |
---|
528 | case OBJECTS_REMOTE: |
---|
529 | _Thread_Dispatch(); |
---|
530 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
531 | set_errno_and_return_minus_one( EINVAL ); |
---|
532 | case OBJECTS_LOCAL: |
---|
533 | _CORE_semaphore_Surrender( |
---|
534 | &the_semaphore->Semaphore, |
---|
535 | the_semaphore->Object.id, |
---|
536 | #if defined(RTEMS_MULTIPROCESSING) |
---|
537 | POSIX_Semaphore_MP_support |
---|
538 | #else |
---|
539 | NULL |
---|
540 | #endif |
---|
541 | ); |
---|
542 | _Thread_Enable_dispatch(); |
---|
543 | return 0; |
---|
544 | } |
---|
545 | return POSIX_BOTTOM_REACHED(); |
---|
546 | } |
---|
547 | |
---|
548 | /*PAGE |
---|
549 | * |
---|
550 | * 11.2.8 Get the Value of a Semaphore, P1003.1b-1993, p.229 |
---|
551 | */ |
---|
552 | |
---|
553 | int sem_getvalue( |
---|
554 | sem_t *sem, |
---|
555 | int *sval |
---|
556 | ) |
---|
557 | { |
---|
558 | register POSIX_Semaphore_Control *the_semaphore; |
---|
559 | Objects_Locations location; |
---|
560 | |
---|
561 | the_semaphore = _POSIX_Semaphore_Get( sem, &location ); |
---|
562 | switch ( location ) { |
---|
563 | case OBJECTS_ERROR: |
---|
564 | set_errno_and_return_minus_one( EINVAL ); |
---|
565 | case OBJECTS_REMOTE: |
---|
566 | _Thread_Dispatch(); |
---|
567 | return POSIX_MP_NOT_IMPLEMENTED(); |
---|
568 | set_errno_and_return_minus_one( EINVAL ); |
---|
569 | case OBJECTS_LOCAL: |
---|
570 | *sval = _CORE_semaphore_Get_count( &the_semaphore->Semaphore ); |
---|
571 | _Thread_Enable_dispatch(); |
---|
572 | return 0; |
---|
573 | } |
---|
574 | return POSIX_BOTTOM_REACHED(); |
---|
575 | } |
---|