1 | /* rtems/posix/mutex.inl |
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2 | * |
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3 | * This include file contains the static inline implementation of the private |
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4 | * inlined routines for POSIX mutex's. |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1999. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.OARcorp.com/rtems/license.html. |
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12 | * |
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13 | * $Id$ |
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14 | */ |
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15 | |
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16 | #ifndef __RTEMS_POSIX_MUTEX_inl |
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17 | #define __RTEMS_POSIX_MUTEX_inl |
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18 | |
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19 | /*PAGE |
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20 | * |
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21 | * _POSIX_Mutex_Allocate |
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22 | */ |
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23 | |
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24 | RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Allocate( void ) |
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25 | { |
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26 | return (POSIX_Mutex_Control *) _Objects_Allocate( &_POSIX_Mutex_Information ); |
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27 | } |
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28 | |
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29 | /*PAGE |
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30 | * |
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31 | * _POSIX_Mutex_Free |
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32 | */ |
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33 | |
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34 | RTEMS_INLINE_ROUTINE void _POSIX_Mutex_Free ( |
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35 | POSIX_Mutex_Control *the_mutex |
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36 | ) |
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37 | { |
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38 | _Objects_Free( &_POSIX_Mutex_Information, &the_mutex->Object ); |
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39 | } |
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40 | |
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41 | /*PAGE |
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42 | * |
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43 | * _POSIX_Mutex_Get |
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44 | * |
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45 | * NOTE: The support macro makes it possible for both to use exactly |
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46 | * the same code to check for NULL id pointer and |
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47 | * PTHREAD_MUTEX_INITIALIZER without adding overhead. |
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48 | */ |
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49 | |
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50 | #define ___POSIX_Mutex_Get_support( _id, _location ) \ |
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51 | do { \ |
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52 | int _status; \ |
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53 | \ |
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54 | if ( !_id ) { \ |
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55 | *_location = OBJECTS_ERROR; \ |
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56 | return (POSIX_Mutex_Control *) 0; \ |
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57 | } \ |
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58 | \ |
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59 | if ( *_id == PTHREAD_MUTEX_INITIALIZER ) { \ |
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60 | /* \ |
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61 | * Do an "auto-create" here. \ |
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62 | */ \ |
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63 | \ |
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64 | _status = pthread_mutex_init( _id, 0 ); \ |
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65 | if ( _status ) { \ |
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66 | *_location = OBJECTS_ERROR; \ |
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67 | return (POSIX_Mutex_Control *) 0; \ |
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68 | } \ |
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69 | } \ |
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70 | } while (0) |
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71 | |
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72 | RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Get ( |
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73 | Objects_Id *id, |
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74 | Objects_Locations *location |
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75 | ) |
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76 | { |
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77 | ___POSIX_Mutex_Get_support( id, location ); |
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78 | |
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79 | return (POSIX_Mutex_Control *) |
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80 | _Objects_Get( &_POSIX_Mutex_Information, *id, location ); |
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81 | } |
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82 | |
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83 | RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Get_interrupt_disable ( |
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84 | Objects_Id *id, |
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85 | Objects_Locations *location, |
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86 | ISR_Level *level |
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87 | ) |
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88 | { |
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89 | ___POSIX_Mutex_Get_support( id, location ); |
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90 | |
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91 | return (POSIX_Mutex_Control *) |
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92 | _Objects_Get_isr_disable( &_POSIX_Mutex_Information, *id, location, level ); |
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93 | } |
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94 | |
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95 | |
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96 | /*PAGE |
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97 | * |
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98 | * _POSIX_Mutex_Is_null |
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99 | */ |
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100 | |
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101 | RTEMS_INLINE_ROUTINE boolean _POSIX_Mutex_Is_null ( |
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102 | POSIX_Mutex_Control *the_mutex |
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103 | ) |
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104 | { |
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105 | return !the_mutex; |
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106 | } |
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107 | |
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108 | #endif |
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109 | /* end of include file */ |
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110 | |
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