source: rtems/cpukit/posix/src/mutexunlock.c @ 860c34e

4.104.114.9
Last change on this file since 860c34e was 860c34e, checked in by Glenn Humphrey <glenn.humphrey@…>, on Nov 30, 2007 at 8:34:13 PM

2007-11-30 Glenn Humphrey <glenn.humphrey@…>

  • posix/include/rtems/posix/mutex.h, posix/include/rtems/posix/semaphore.h, posix/src/cancel.c, posix/src/conddestroy.c, posix/src/condsignalsupp.c, posix/src/condwaitsupp.c, posix/src/keydelete.c, posix/src/keygetspecific.c, posix/src/keysetspecific.c, posix/src/mqueueclose.c, posix/src/mqueuegetattr.c, posix/src/mqueuenotify.c, posix/src/mqueuerecvsupp.c, posix/src/mqueuesendsupp.c, posix/src/mqueuesetattr.c, posix/src/mqueuetranslatereturncode.c, posix/src/mutexdestroy.c, posix/src/mutexgetprioceiling.c, posix/src/mutexinit.c, posix/src/mutexlocksupp.c, posix/src/mutexsetprioceiling.c, posix/src/mutexunlock.c, posix/src/pbarrierdestroy.c, posix/src/pbarriertranslatereturncode.c, posix/src/pbarrierwait.c, posix/src/prwlockdestroy.c, posix/src/prwlockrdlock.c, posix/src/prwlocktimedrdlock.c, posix/src/prwlocktimedwrlock.c, posix/src/prwlocktranslatereturncode.c, posix/src/prwlocktryrdlock.c, posix/src/prwlocktrywrlock.c, posix/src/prwlockunlock.c, posix/src/prwlockwrlock.c, posix/src/pspindestroy.c, posix/src/pspinlock.c, posix/src/pspinlocktranslatereturncode.c, posix/src/pspintrylock.c, posix/src/pspinunlock.c, posix/src/pthreaddetach.c, posix/src/pthreadequal.c, posix/src/pthreadgetschedparam.c, posix/src/pthreadjoin.c, posix/src/pthreadkill.c, posix/src/pthreadsetschedparam.c, posix/src/ptimer1.c, posix/src/semaphorewaitsupp.c, posix/src/semclose.c, posix/src/semdestroy.c, posix/src/semgetvalue.c, posix/src/sempost.c, posix/src/types.c, rtems/src/msgqtranslatereturncode.c, rtems/src/semobtain.c, rtems/src/timerfireafter.c, score/include/rtems/system.h, score/include/rtems/score/corebarrier.h, score/include/rtems/score/coremsg.h, score/include/rtems/score/coremutex.h, score/include/rtems/score/coresem.h: Restructed to move the OBJECTS_LOCAL case to the top of the switch statement and eliminate the fall-through return of POSIX_BOTTOM_REACHED. These changes produced simplier assembly code and allowed for complete test coverage. Also applied some consistency to the functions that translate the core status codes to POSIX status codes.
  • posix/src/mutextranslatereturncode.c, posix/src/semaphoretranslatereturncode.c: New files.
  • posix/src/mutexfromcorestatus.c: Removed.
  • Property mode set to 100644
File size: 1.2 KB
Line 
1/*
2 *  $Id$
3 */
4
5#if HAVE_CONFIG_H
6#include "config.h"
7#endif
8
9#include <errno.h>
10#include <pthread.h>
11
12#include <rtems/system.h>
13#include <rtems/score/coremutex.h>
14#include <rtems/score/watchdog.h>
15#if defined(RTEMS_MULTIPROCESSING)
16#include <rtems/score/mpci.h>
17#endif
18#include <rtems/posix/mutex.h>
19#include <rtems/posix/priority.h>
20#include <rtems/posix/time.h>
21
22/*PAGE
23 *
24 *  11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93
25 *
26 *  NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29
27 */
28
29int pthread_mutex_unlock(
30  pthread_mutex_t           *mutex
31)
32{
33  register POSIX_Mutex_Control *the_mutex;
34  Objects_Locations             location;
35  CORE_mutex_Status             status;
36
37  the_mutex = _POSIX_Mutex_Get( mutex, &location );
38  switch ( location ) {
39
40    case OBJECTS_LOCAL:
41      status = _CORE_mutex_Surrender(
42        &the_mutex->Mutex,
43        the_mutex->Object.id,
44#if defined(RTEMS_MULTIPROCESSING)
45        _POSIX_Threads_mutex_MP_support
46#else
47        NULL
48#endif
49      );
50      _Thread_Enable_dispatch();
51      return _POSIX_Mutex_Translate_core_mutex_return_code( status );
52
53#if defined(RTEMS_MULTIPROCESSING)
54    case OBJECTS_REMOTE:
55#endif
56    case OBJECTS_ERROR:
57      break;
58  }
59
60  return EINVAL;
61}
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