4.115
Last change
on this file since 439c494 was
34684573,
checked in by Sebastian Huber <sebastian.huber@…>, on 03/27/14 at 12:38:04
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score: Use thread life protection for API mutexes
This prevents that asynchronous thread deletion can lead to an unusable
allocator or once mutex.
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-
Property mode set to
100644
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File size:
1.1 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Acquires the specified API mutex. |
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5 | * |
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6 | * @ingroup ScoreAPIMutex |
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7 | */ |
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8 | |
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9 | /* |
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10 | * COPYRIGHT (c) 1989-2007. |
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11 | * On-Line Applications Research Corporation (OAR). |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in the file LICENSE in this distribution or at |
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15 | * http://www.rtems.org/license/LICENSE. |
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16 | */ |
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17 | |
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18 | #if HAVE_CONFIG_H |
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19 | #include "config.h" |
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20 | #endif |
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21 | |
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22 | #include <rtems/score/apimutex.h> |
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23 | #include <rtems/score/coremuteximpl.h> |
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24 | #include <rtems/score/threadimpl.h> |
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25 | |
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26 | void _API_Mutex_Lock( API_Mutex_Control *the_mutex ) |
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27 | { |
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28 | bool previous_thread_life_protection; |
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29 | ISR_Level level; |
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30 | |
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31 | previous_thread_life_protection = _Thread_Set_life_protection( true ); |
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32 | |
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33 | #if defined(RTEMS_SMP) |
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34 | _Thread_Disable_dispatch(); |
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35 | #endif |
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36 | |
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37 | _ISR_Disable( level ); |
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38 | |
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39 | _CORE_mutex_Seize( |
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40 | &the_mutex->Mutex, |
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41 | _Thread_Executing, |
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42 | the_mutex->Object.id, |
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43 | true, |
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44 | 0, |
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45 | level |
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46 | ); |
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47 | |
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48 | if ( the_mutex->Mutex.nest_count == 1 ) { |
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49 | the_mutex->previous_thread_life_protection = |
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50 | previous_thread_life_protection; |
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51 | } |
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52 | |
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53 | #if defined(RTEMS_SMP) |
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54 | _Thread_Enable_dispatch(); |
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55 | #endif |
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56 | } |
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