5
Last change
on this file since 77fbbd6 was
89fc9345,
checked in by Sebastian Huber <sebastian.huber@…>, on 09/21/17 at 13:42:45
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posix: Implement self-contained POSIX rwlocks
POSIX rwlocks are now available in all configurations and no longer
depend on --enable-posix.
Update #2514.
Update #3115.
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-
Property mode set to
100644
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File size:
1.2 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Function Releases a lock held on RWLock object referenced by rwlock |
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5 | * @ingroup POSIXAPI |
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6 | */ |
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7 | |
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8 | /* |
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9 | * POSIX RWLock Manager -- Release a lock held on a RWLock Instance |
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10 | * |
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11 | * COPYRIGHT (c) 1989-2007. |
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12 | * On-Line Applications Research Corporation (OAR). |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.org/license/LICENSE. |
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17 | */ |
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18 | |
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19 | #if HAVE_CONFIG_H |
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20 | #include "config.h" |
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21 | #endif |
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22 | |
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23 | #include <rtems/posix/rwlockimpl.h> |
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24 | #include <rtems/posix/posixapi.h> |
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25 | |
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26 | #include <string.h> |
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27 | |
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28 | bool _POSIX_RWLock_Auto_initialization( POSIX_RWLock_Control *the_rwlock ) |
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29 | { |
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30 | POSIX_RWLock_Control zero; |
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31 | |
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32 | memset( &zero, 0, sizeof( zero ) ); |
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33 | |
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34 | if ( memcmp( the_rwlock, &zero, sizeof( *the_rwlock ) ) != 0 ) { |
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35 | return false; |
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36 | } |
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37 | |
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38 | the_rwlock->flags = POSIX_RWLOCK_MAGIC; |
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39 | return true; |
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40 | } |
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41 | |
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42 | int pthread_rwlock_unlock( |
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43 | pthread_rwlock_t *rwlock |
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44 | ) |
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45 | { |
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46 | POSIX_RWLock_Control *the_rwlock; |
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47 | Status_Control status; |
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48 | |
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49 | the_rwlock = _POSIX_RWLock_Get( rwlock ); |
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50 | POSIX_RWLOCK_VALIDATE_OBJECT( the_rwlock ); |
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51 | |
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52 | status = _CORE_RWLock_Surrender( &the_rwlock->RWLock ); |
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53 | return _POSIX_Get_error( status ); |
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54 | } |
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