source: rtems/cpukit/posix/src/mutextrylock.c @ 04da96c7

5
Last change on this file since 04da96c7 was 21789a21, checked in by Sebastian Huber <sebastian.huber@…>, on 07/28/15 at 12:45:42

score: Rename _POSIX_Absolute_timeout_to_ticks()

Rename _POSIX_Absolute_timeout_to_ticks() to
_TOD_Absolute_timeout_to_ticks() and move it to the score directory.
Delete empty <rtems/posix/time.h>.
  • Property mode set to 100644
File size: 909 bytes
Line 
1/**
2 * @file
3 *
4 * @brief Try to Lock 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 <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#include <rtems/posix/muteximpl.h>
28#include <rtems/posix/priorityimpl.h>
29
30/**
31 * 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93
32 *
33 * NOTE: P1003.4b/D8 adds pthread_mutex_timedlock(), p. 29
34 */
35int pthread_mutex_trylock(
36  pthread_mutex_t           *mutex
37)
38{
39  int r = _POSIX_Mutex_Lock_support( mutex, false, WATCHDOG_NO_TIMEOUT );
40  if ( r == EDEADLK )
41    r = EBUSY;
42  return r;
43}
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