source: rtems/cpukit/posix/src/mutexunlock.c @ be1b8a7

4.115
Last change on this file since be1b8a7 was 97552c98, checked in by Sebastian Huber <sebastian.huber@…>, on 07/19/13 at 12:15:59

posix: Create priority implementation header

Move implementation specific parts of priority.h and priority.inl into
new header file priorityimpl.h. Remove priority.h since there is no
application visible API.

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/**
2 * @file
3 *
4 * @brief Locking and Unlocking a Mutex
5 * @ingroup POSIXAPI
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2007.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.com/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <errno.h>
22#include <pthread.h>
23
24#include <rtems/system.h>
25#include <rtems/score/coremuteximpl.h>
26#include <rtems/score/watchdog.h>
27#if defined(RTEMS_MULTIPROCESSING)
28#include <rtems/score/mpci.h>
29#endif
30#include <rtems/posix/muteximpl.h>
31#include <rtems/posix/priorityimpl.h>
32#include <rtems/posix/time.h>
33
34/*
35 *  11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93
36 *
37 *  NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29
38 */
39
40int pthread_mutex_unlock(
41  pthread_mutex_t           *mutex
42)
43{
44  register POSIX_Mutex_Control *the_mutex;
45  Objects_Locations             location;
46  CORE_mutex_Status             status;
47
48  the_mutex = _POSIX_Mutex_Get( mutex, &location );
49  switch ( location ) {
50
51    case OBJECTS_LOCAL:
52      status = _CORE_mutex_Surrender(
53        &the_mutex->Mutex,
54        the_mutex->Object.id,
55        NULL
56      );
57      _Objects_Put( &the_mutex->Object );
58      return _POSIX_Mutex_Translate_core_mutex_return_code( status );
59
60#if defined(RTEMS_MULTIPROCESSING)
61    case OBJECTS_REMOTE:
62#endif
63    case OBJECTS_ERROR:
64      break;
65  }
66
67  return EINVAL;
68}
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