source: rtems/cpukit/posix/src/mutexunlock.c @ c3d8d9e

5
Last change on this file since c3d8d9e was c3d8d9e, checked in by Sebastian Huber <sebastian.huber@…>, on 05/23/16 at 04:55:49

score: Get rid of mp_id parameter

Get rid of the mp_id parameter used for some thread queue methods. Use
THREAD_QUEUE_QUEUE_TO_OBJECT() instead.

  • Property mode set to 100644
File size: 990 bytes
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.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <rtems/posix/muteximpl.h>
22
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  POSIX_Mutex_Control *the_mutex;
34  CORE_mutex_Status    status;
35  ISR_lock_Context     lock_context;
36
37  the_mutex = _POSIX_Mutex_Get( mutex, &lock_context );
38
39  if ( the_mutex == NULL ) {
40    return EINVAL;
41  }
42
43  status = _CORE_mutex_Surrender(
44    &the_mutex->Mutex,
45    NULL,
46    &lock_context
47  );
48  return _POSIX_Mutex_Translate_core_mutex_return_code( status );
49}
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