1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Initialization and Allocation for API Mutex Handler |
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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/objectimpl.h> |
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25 | |
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26 | static Objects_Information _API_Mutex_Information; |
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27 | |
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28 | void _API_Mutex_Initialization( |
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29 | uint32_t maximum_mutexes |
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30 | ) |
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31 | { |
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32 | _Objects_Initialize_information( |
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33 | &_API_Mutex_Information, /* object information table */ |
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34 | OBJECTS_INTERNAL_API, /* object API */ |
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35 | OBJECTS_INTERNAL_MUTEXES, /* object class */ |
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36 | maximum_mutexes, /* maximum objects of this class */ |
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37 | sizeof( API_Mutex_Control ), /* size of this object's control block */ |
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38 | false, /* true if the name is a string */ |
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39 | 0 /* maximum length of an object name */ |
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40 | #if defined(RTEMS_MULTIPROCESSING) |
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41 | , |
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42 | true, /* true if this is a global object class */ |
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43 | NULL /* Proxy extraction support callout */ |
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44 | #endif |
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45 | ); |
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46 | } |
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47 | |
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48 | void _API_Mutex_Allocate( |
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49 | API_Mutex_Control **the_mutex |
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50 | ) |
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51 | { |
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52 | API_Mutex_Control *mutex; |
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53 | |
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54 | CORE_mutex_Attributes attr = { |
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55 | CORE_MUTEX_NESTING_ACQUIRES, |
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56 | false, |
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57 | CORE_MUTEX_DISCIPLINES_PRIORITY_INHERIT, |
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58 | 0 |
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59 | }; |
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60 | |
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61 | mutex = (API_Mutex_Control *) |
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62 | _Objects_Allocate_unprotected( &_API_Mutex_Information ); |
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63 | |
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64 | _CORE_mutex_Initialize( &mutex->Mutex, NULL, &attr, CORE_MUTEX_UNLOCKED ); |
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65 | |
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66 | _Objects_Open_u32( &_API_Mutex_Information, &mutex->Object, 1 ); |
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67 | |
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68 | *the_mutex = mutex; |
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69 | } |
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