source: rtems/cpukit/score/src/apimutexunlock.c @ 25f5730f

4.11
Last change on this file since 25f5730f was 34684573, checked in by Sebastian Huber <sebastian.huber@…>, on Mar 27, 2014 at 12:38:04 PM

score: Use thread life protection for API mutexes

This prevents that asynchronous thread deletion can lead to an unusable
allocator or once mutex.

  • Property mode set to 100644
File size: 1008 bytes
Line 
1/**
2 * @file
3 *
4 * @brief Releases the Specified API Mutex
5 *
6 * @ingroup ScoreAPIMutex
7 */
8
9/*
10 *  COPYRIGHT (c) 1989-2007.
11 *  On-Line Applications Research Corporation (OAR).
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.org/license/LICENSE.
16 */
17
18#if HAVE_CONFIG_H
19#include "config.h"
20#endif
21
22#include <rtems/score/apimutex.h>
23#include <rtems/score/coremuteximpl.h>
24
25void _API_Mutex_Unlock( API_Mutex_Control *the_mutex )
26{
27  bool previous_thread_life_protection;
28  bool restore_thread_life_protection;
29
30  _Thread_Disable_dispatch();
31
32  previous_thread_life_protection =
33    the_mutex->previous_thread_life_protection;
34  restore_thread_life_protection = the_mutex->Mutex.nest_count == 1;
35
36  _CORE_mutex_Surrender( &the_mutex->Mutex, the_mutex->Object.id, NULL );
37
38  _Thread_Enable_dispatch();
39
40  if ( restore_thread_life_protection ) {
41    _Thread_Set_life_protection( previous_thread_life_protection );
42  }
43}
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