5
Last change
on this file since 8866e62 was
8866e62,
checked in by Sebastian Huber <sebastian.huber@…>, on 05/23/16 at 04:26:58
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score: Move thread queue object support
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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 Obtain a Write Lock on a RWlock Instance |
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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 -- Obtain a Write Lock 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 <pthread.h> |
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24 | #include <errno.h> |
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25 | |
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26 | #include <rtems/posix/rwlockimpl.h> |
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27 | |
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28 | THREAD_QUEUE_OBJECT_ASSERT( POSIX_RWLock_Control, RWLock.Wait_queue ); |
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29 | |
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30 | int pthread_rwlock_wrlock( |
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31 | pthread_rwlock_t *rwlock |
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32 | ) |
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33 | { |
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34 | POSIX_RWLock_Control *the_rwlock; |
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35 | ISR_lock_Context lock_context; |
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36 | Thread_Control *executing; |
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37 | |
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38 | the_rwlock = _POSIX_RWLock_Get( rwlock, &lock_context ); |
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39 | |
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40 | if ( the_rwlock == NULL ) { |
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41 | return EINVAL; |
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42 | } |
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43 | |
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44 | executing = _Thread_Executing; |
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45 | _CORE_RWLock_Seize_for_writing( |
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46 | &the_rwlock->RWLock, |
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47 | executing, |
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48 | true, /* do not timeout -- wait forever */ |
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49 | 0, |
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50 | &lock_context |
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51 | ); |
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52 | return _POSIX_RWLock_Translate_core_RWLock_return_code( |
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53 | (CORE_RWLock_Status) executing->Wait.return_code |
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54 | ); |
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55 | } |
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