5
Last change
on this file since 99fc1d1d was
dce48791,
checked in by Sebastian Huber <sebastian.huber@…>, on 05/23/16 at 11:37:59
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score: Add Status_Control for all APIs
Unify the status codes of the Classic and POSIX API to use the new enum
Status_Control. This eliminates the Thread_Control::Wait::timeout_code
field and the timeout parameter of _Thread_queue_Enqueue_critical() and
_MPCI_Send_request_packet(). It gets rid of the status code translation
tables and instead uses simple bit operations to get the status for a
particular API. This enables translation of status code constants at
compile time. Add _Thread_Wait_get_status() to avoid direct access of
thread internal data structures.
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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 Release a Spinlock |
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5 | * @ingroup ScoreSpinlock |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2006. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/score/corespinlockimpl.h> |
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22 | #include <rtems/score/percpu.h> |
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23 | |
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24 | Status_Control _CORE_spinlock_Surrender( |
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25 | CORE_spinlock_Control *the_spinlock, |
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26 | ISR_lock_Context *lock_context |
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27 | ) |
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28 | { |
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29 | _CORE_spinlock_Acquire_critical( the_spinlock, lock_context ); |
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30 | |
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31 | /* |
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32 | * It must locked by the current thread before it can be unlocked. |
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33 | */ |
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34 | if ( |
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35 | the_spinlock->lock != CORE_SPINLOCK_LOCKED |
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36 | || the_spinlock->holder != _Thread_Executing |
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37 | ) { |
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38 | _CORE_spinlock_Release( the_spinlock, lock_context ); |
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39 | return STATUS_NOT_OWNER; |
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40 | } |
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41 | |
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42 | /* |
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43 | * Let it be unlocked. |
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44 | */ |
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45 | the_spinlock->users -= 1; |
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46 | the_spinlock->lock = CORE_SPINLOCK_UNLOCKED; |
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47 | the_spinlock->holder = 0; |
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48 | |
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49 | _CORE_spinlock_Release( the_spinlock, lock_context ); |
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50 | return STATUS_SUCCESSFUL; |
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51 | } |
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