[ac7d5ef0] | 1 | /* |
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| 2 | * Semaphore Manager |
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| 3 | * |
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| 4 | * DESCRIPTION: |
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| 5 | * |
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| 6 | * This package is the implementation of the Semaphore Manager. |
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| 7 | * This manager utilizes standard Dijkstra counting semaphores to provide |
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| 8 | * synchronization and mutual exclusion capabilities. |
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| 9 | * |
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| 10 | * Directives provided are: |
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| 11 | * |
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| 12 | * + create a semaphore |
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| 13 | * + get an ID of a semaphore |
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| 14 | * + delete a semaphore |
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| 15 | * + acquire a semaphore |
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| 16 | * + release a semaphore |
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| 17 | * |
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| 18 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 19 | * On-Line Applications Research Corporation (OAR). |
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| 20 | * All rights assigned to U.S. Government, 1994. |
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| 21 | * |
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| 22 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 23 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 24 | * notice must appear in all copies of this file and its derivatives. |
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| 25 | * |
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| 26 | * $Id$ |
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| 27 | */ |
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| 28 | |
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| 29 | #include <rtems/system.h> |
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[3a4ae6c] | 30 | #include <rtems/rtems/status.h> |
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| 31 | #include <rtems/rtems/support.h> |
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| 32 | #include <rtems/rtems/attr.h> |
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| 33 | #include <rtems/core/isr.h> |
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| 34 | #include <rtems/core/object.h> |
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| 35 | #include <rtems/rtems/options.h> |
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| 36 | #include <rtems/rtems/sem.h> |
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| 37 | #include <rtems/core/coremutex.h> |
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| 38 | #include <rtems/core/coresem.h> |
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| 39 | #include <rtems/core/states.h> |
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| 40 | #include <rtems/core/thread.h> |
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| 41 | #include <rtems/core/threadq.h> |
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| 42 | #include <rtems/core/mpci.h> |
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| 43 | #include <rtems/sysstate.h> |
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| 44 | |
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| 45 | #include <rtems/core/interr.h> |
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[ac7d5ef0] | 46 | |
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| 47 | /*PAGE |
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| 48 | * |
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| 49 | * _Semaphore_Manager_initialization |
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| 50 | * |
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| 51 | * This routine initializes all semaphore manager related data structures. |
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| 52 | * |
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| 53 | * Input parameters: |
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| 54 | * maximum_semaphores - maximum configured semaphores |
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| 55 | * |
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| 56 | * Output parameters: NONE |
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| 57 | */ |
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| 58 | |
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| 59 | void _Semaphore_Manager_initialization( |
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| 60 | unsigned32 maximum_semaphores |
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| 61 | ) |
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| 62 | { |
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| 63 | _Objects_Initialize_information( |
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| 64 | &_Semaphore_Information, |
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[3235ad9] | 65 | OBJECTS_RTEMS_SEMAPHORES, |
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[ac7d5ef0] | 66 | TRUE, |
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| 67 | maximum_semaphores, |
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[3235ad9] | 68 | sizeof( Semaphore_Control ), |
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| 69 | FALSE, |
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[5250ff39] | 70 | RTEMS_MAXIMUM_NAME_LENGTH, |
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| 71 | FALSE |
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[ac7d5ef0] | 72 | ); |
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[3a4ae6c] | 73 | |
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| 74 | /* |
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| 75 | * Register the MP Process Packet routine. |
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| 76 | */ |
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| 77 | |
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| 78 | _MPCI_Register_packet_processor( |
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| 79 | MP_PACKET_SEMAPHORE, |
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| 80 | _Semaphore_MP_Process_packet |
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| 81 | ); |
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| 82 | |
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[ac7d5ef0] | 83 | } |
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| 84 | |
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| 85 | /*PAGE |
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| 86 | * |
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| 87 | * rtems_semaphore_create |
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| 88 | * |
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| 89 | * This directive creates a semaphore and sets the initial value based |
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| 90 | * on the given count. A semaphore id is returned. |
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| 91 | * |
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| 92 | * Input parameters: |
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[3a4ae6c] | 93 | * name - user defined semaphore name |
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| 94 | * count - initial count of semaphore |
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| 95 | * attribute_set - semaphore attributes |
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| 96 | * priority_ceiling - semaphore's ceiling priority |
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| 97 | * id - pointer to semaphore id |
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[ac7d5ef0] | 98 | * |
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| 99 | * Output parameters: |
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| 100 | * id - semaphore id |
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| 101 | * RTEMS_SUCCESSFUL - if successful |
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| 102 | * error code - if unsuccessful |
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| 103 | */ |
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| 104 | |
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| 105 | rtems_status_code rtems_semaphore_create( |
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[3a4ae6c] | 106 | rtems_name name, |
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| 107 | unsigned32 count, |
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| 108 | rtems_attribute attribute_set, |
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| 109 | rtems_task_priority priority_ceiling, |
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| 110 | Objects_Id *id |
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[ac7d5ef0] | 111 | ) |
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| 112 | { |
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| 113 | register Semaphore_Control *the_semaphore; |
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[3a4ae6c] | 114 | CORE_mutex_Attributes the_mutex_attributes; |
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| 115 | CORE_semaphore_Attributes the_semaphore_attributes; |
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| 116 | unsigned32 lock; |
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[ac7d5ef0] | 117 | |
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[3235ad9] | 118 | if ( !rtems_is_name_valid( name ) ) |
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[3652ad35] | 119 | return RTEMS_INVALID_NAME; |
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[ac7d5ef0] | 120 | |
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| 121 | if ( _Attributes_Is_global( attribute_set ) ) { |
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| 122 | |
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[3a4ae6c] | 123 | if ( !_System_state_Is_multiprocessing ) |
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[3652ad35] | 124 | return RTEMS_MP_NOT_CONFIGURED; |
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[ac7d5ef0] | 125 | |
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| 126 | if ( _Attributes_Is_inherit_priority( attribute_set ) ) |
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[3652ad35] | 127 | return RTEMS_NOT_DEFINED; |
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[ac7d5ef0] | 128 | |
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| 129 | } else if ( _Attributes_Is_inherit_priority( attribute_set ) ) { |
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| 130 | |
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| 131 | if ( ! ( _Attributes_Is_binary_semaphore( attribute_set ) && |
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| 132 | _Attributes_Is_priority( attribute_set ) ) ) |
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[3652ad35] | 133 | return RTEMS_NOT_DEFINED; |
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[ac7d5ef0] | 134 | |
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| 135 | } |
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| 136 | |
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| 137 | if ( _Attributes_Is_binary_semaphore( attribute_set ) && ( count > 1 ) ) |
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[3652ad35] | 138 | return RTEMS_INVALID_NUMBER; |
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[ac7d5ef0] | 139 | |
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| 140 | _Thread_Disable_dispatch(); /* prevents deletion */ |
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| 141 | |
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| 142 | the_semaphore = _Semaphore_Allocate(); |
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| 143 | |
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| 144 | if ( !the_semaphore ) { |
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| 145 | _Thread_Enable_dispatch(); |
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[3652ad35] | 146 | return RTEMS_TOO_MANY; |
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[ac7d5ef0] | 147 | } |
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| 148 | |
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| 149 | if ( _Attributes_Is_global( attribute_set ) && |
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[3a4ae6c] | 150 | ! ( _Objects_MP_Allocate_and_open( &_Semaphore_Information, name, |
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[ac7d5ef0] | 151 | the_semaphore->Object.id, FALSE ) ) ) { |
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| 152 | _Semaphore_Free( the_semaphore ); |
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| 153 | _Thread_Enable_dispatch(); |
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[3652ad35] | 154 | return RTEMS_TOO_MANY; |
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[ac7d5ef0] | 155 | } |
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| 156 | |
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| 157 | the_semaphore->attribute_set = attribute_set; |
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| 158 | |
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[3a4ae6c] | 159 | if ( _Attributes_Is_binary_semaphore( attribute_set ) ) { |
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| 160 | if ( _Attributes_Is_inherit_priority( attribute_set ) ) |
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| 161 | the_mutex_attributes.discipline = CORE_MUTEX_DISCIPLINES_PRIORITY_INHERIT; |
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| 162 | else if (_Attributes_Is_priority_ceiling( attribute_set ) ) |
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| 163 | the_mutex_attributes.discipline = CORE_MUTEX_DISCIPLINES_PRIORITY_CEILING; |
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| 164 | else if (_Attributes_Is_priority( attribute_set ) ) |
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| 165 | the_mutex_attributes.discipline = CORE_MUTEX_DISCIPLINES_PRIORITY; |
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| 166 | else |
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| 167 | the_mutex_attributes.discipline = CORE_MUTEX_DISCIPLINES_FIFO; |
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| 168 | |
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| 169 | the_mutex_attributes.allow_nesting = TRUE; |
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| 170 | |
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| 171 | /* Add priority ceiling code here ????? */ |
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| 172 | |
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| 173 | if ( count == 1 ) |
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| 174 | lock = CORE_MUTEX_UNLOCKED; |
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| 175 | else |
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| 176 | lock = CORE_MUTEX_LOCKED; |
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| 177 | |
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| 178 | _CORE_mutex_Initialize( |
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| 179 | &the_semaphore->Core_control.mutex, |
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| 180 | OBJECTS_RTEMS_SEMAPHORES, |
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| 181 | &the_mutex_attributes, |
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| 182 | lock, |
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| 183 | _Semaphore_MP_Send_extract_proxy |
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| 184 | ); |
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| 185 | } |
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| 186 | else { |
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| 187 | if ( _Attributes_Is_priority( attribute_set ) ) |
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| 188 | the_semaphore_attributes.discipline = CORE_SEMAPHORE_DISCIPLINES_PRIORITY; |
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| 189 | else |
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| 190 | the_semaphore_attributes.discipline = CORE_SEMAPHORE_DISCIPLINES_FIFO; |
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| 191 | |
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| 192 | _CORE_semaphore_Initialize( |
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| 193 | &the_semaphore->Core_control.semaphore, |
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| 194 | OBJECTS_RTEMS_SEMAPHORES, |
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| 195 | &the_semaphore_attributes, |
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| 196 | count, |
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| 197 | _Semaphore_MP_Send_extract_proxy |
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| 198 | ); |
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| 199 | } |
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[ac7d5ef0] | 200 | |
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[3235ad9] | 201 | _Objects_Open( &_Semaphore_Information, &the_semaphore->Object, &name ); |
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[ac7d5ef0] | 202 | |
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| 203 | *id = the_semaphore->Object.id; |
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| 204 | |
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| 205 | if ( _Attributes_Is_global( attribute_set ) ) |
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| 206 | _Semaphore_MP_Send_process_packet( |
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| 207 | SEMAPHORE_MP_ANNOUNCE_CREATE, |
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| 208 | the_semaphore->Object.id, |
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| 209 | name, |
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| 210 | 0 /* Not used */ |
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| 211 | ); |
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| 212 | _Thread_Enable_dispatch(); |
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[3652ad35] | 213 | return RTEMS_SUCCESSFUL; |
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[ac7d5ef0] | 214 | } |
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| 215 | |
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| 216 | /*PAGE |
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| 217 | * |
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| 218 | * rtems_semaphore_ident |
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| 219 | * |
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| 220 | * This directive returns the system ID associated with |
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| 221 | * the semaphore name. |
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| 222 | * |
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| 223 | * Input parameters: |
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| 224 | * name - user defined semaphore name |
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| 225 | * node - node(s) to be searched |
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| 226 | * id - pointer to semaphore id |
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| 227 | * |
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| 228 | * Output parameters: |
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| 229 | * *id - semaphore id |
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| 230 | * RTEMS_SUCCESSFUL - if successful |
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| 231 | * error code - if unsuccessful |
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| 232 | */ |
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| 233 | |
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| 234 | rtems_status_code rtems_semaphore_ident( |
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[3a4ae6c] | 235 | rtems_name name, |
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| 236 | unsigned32 node, |
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| 237 | Objects_Id *id |
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[ac7d5ef0] | 238 | ) |
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| 239 | { |
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[3a4ae6c] | 240 | Objects_Name_to_id_errors status; |
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| 241 | |
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| 242 | status = _Objects_Name_to_id( &_Semaphore_Information, &name, node, id ); |
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| 243 | |
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| 244 | return _Status_Object_name_errors_to_status[ status ]; |
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[ac7d5ef0] | 245 | } |
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| 246 | |
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| 247 | /*PAGE |
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| 248 | * |
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| 249 | * rtems_semaphore_delete |
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| 250 | * |
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| 251 | * This directive allows a thread to delete a semaphore specified by |
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| 252 | * the semaphore id. The semaphore is freed back to the inactive |
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| 253 | * semaphore chain. |
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| 254 | * |
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| 255 | * Input parameters: |
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| 256 | * id - semaphore id |
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| 257 | * |
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| 258 | * Output parameters: |
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| 259 | * RTEMS_SUCCESSFUL - if successful |
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| 260 | * error code - if unsuccessful |
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| 261 | */ |
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| 262 | |
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| 263 | rtems_status_code rtems_semaphore_delete( |
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| 264 | Objects_Id id |
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| 265 | ) |
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| 266 | { |
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| 267 | register Semaphore_Control *the_semaphore; |
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| 268 | Objects_Locations location; |
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| 269 | |
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| 270 | the_semaphore = _Semaphore_Get( id, &location ); |
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| 271 | switch ( location ) { |
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| 272 | case OBJECTS_ERROR: |
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[3652ad35] | 273 | return RTEMS_INVALID_ID; |
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[ac7d5ef0] | 274 | case OBJECTS_REMOTE: |
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| 275 | _Thread_Dispatch(); |
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[3652ad35] | 276 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
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[ac7d5ef0] | 277 | case OBJECTS_LOCAL: |
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[3a4ae6c] | 278 | if ( _Attributes_Is_binary_semaphore( the_semaphore->attribute_set) ) { |
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| 279 | if ( _CORE_mutex_Is_locked( &the_semaphore->Core_control.mutex ) ) { |
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| 280 | _Thread_Enable_dispatch(); |
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[3652ad35] | 281 | return RTEMS_RESOURCE_IN_USE; |
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[3a4ae6c] | 282 | } |
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| 283 | else |
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| 284 | _CORE_mutex_Flush( |
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| 285 | &the_semaphore->Core_control.mutex, |
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| 286 | _Semaphore_MP_Send_object_was_deleted, |
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| 287 | CORE_MUTEX_WAS_DELETED |
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| 288 | ); |
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[ac7d5ef0] | 289 | } |
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[3a4ae6c] | 290 | else |
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| 291 | _CORE_semaphore_Flush( |
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| 292 | &the_semaphore->Core_control.semaphore, |
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| 293 | _Semaphore_MP_Send_object_was_deleted, |
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| 294 | CORE_SEMAPHORE_WAS_DELETED |
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| 295 | ); |
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[ac7d5ef0] | 296 | |
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| 297 | _Objects_Close( &_Semaphore_Information, &the_semaphore->Object ); |
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| 298 | |
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| 299 | _Semaphore_Free( the_semaphore ); |
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| 300 | |
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| 301 | if ( _Attributes_Is_global( the_semaphore->attribute_set ) ) { |
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| 302 | |
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| 303 | _Objects_MP_Close( &_Semaphore_Information, the_semaphore->Object.id ); |
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| 304 | |
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| 305 | _Semaphore_MP_Send_process_packet( |
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| 306 | SEMAPHORE_MP_ANNOUNCE_DELETE, |
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| 307 | the_semaphore->Object.id, |
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| 308 | 0, /* Not used */ |
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| 309 | 0 /* Not used */ |
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| 310 | ); |
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| 311 | } |
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| 312 | _Thread_Enable_dispatch(); |
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[3652ad35] | 313 | return RTEMS_SUCCESSFUL; |
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[ac7d5ef0] | 314 | } |
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| 315 | |
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[3652ad35] | 316 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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[ac7d5ef0] | 317 | } |
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| 318 | |
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| 319 | /*PAGE |
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| 320 | * |
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| 321 | * rtems_semaphore_obtain |
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| 322 | * |
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| 323 | * This directive allows a thread to acquire a semaphore. |
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| 324 | * |
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| 325 | * Input parameters: |
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| 326 | * id - semaphore id |
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| 327 | * option_set - wait option |
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| 328 | * timeout - number of ticks to wait (0 means wait forever) |
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| 329 | * |
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| 330 | * Output parameters: |
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| 331 | * RTEMS_SUCCESSFUL - if successful |
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| 332 | * error code - if unsuccessful |
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| 333 | */ |
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| 334 | |
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| 335 | rtems_status_code rtems_semaphore_obtain( |
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[3a4ae6c] | 336 | Objects_Id id, |
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| 337 | unsigned32 option_set, |
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| 338 | rtems_interval timeout |
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[ac7d5ef0] | 339 | ) |
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| 340 | { |
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| 341 | register Semaphore_Control *the_semaphore; |
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| 342 | Objects_Locations location; |
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[3a4ae6c] | 343 | boolean wait; |
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[ac7d5ef0] | 344 | |
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| 345 | the_semaphore = _Semaphore_Get( id, &location ); |
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| 346 | switch ( location ) { |
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| 347 | case OBJECTS_ERROR: |
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[3652ad35] | 348 | return RTEMS_INVALID_ID; |
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[ac7d5ef0] | 349 | case OBJECTS_REMOTE: |
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| 350 | return _Semaphore_MP_Send_request_packet( |
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| 351 | SEMAPHORE_MP_OBTAIN_REQUEST, |
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| 352 | id, |
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| 353 | option_set, |
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| 354 | timeout |
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| 355 | ); |
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| 356 | case OBJECTS_LOCAL: |
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[3a4ae6c] | 357 | if ( _Options_Is_no_wait( option_set ) ) |
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| 358 | wait = FALSE; |
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| 359 | else |
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| 360 | wait = TRUE; |
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| 361 | |
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| 362 | if ( _Attributes_Is_binary_semaphore( the_semaphore->attribute_set ) ) { |
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| 363 | _CORE_mutex_Seize( |
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| 364 | &the_semaphore->Core_control.mutex, |
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| 365 | id, |
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| 366 | wait, |
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| 367 | timeout |
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| 368 | ); |
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| 369 | _Thread_Enable_dispatch(); |
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[3652ad35] | 370 | return _Semaphore_Translate_core_mutex_return_code( |
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| 371 | _Thread_Executing->Wait.return_code ); |
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[3a4ae6c] | 372 | } else { |
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| 373 | _CORE_semaphore_Seize( |
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| 374 | &the_semaphore->Core_control.semaphore, |
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| 375 | id, |
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| 376 | wait, |
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| 377 | timeout |
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| 378 | ); |
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| 379 | _Thread_Enable_dispatch(); |
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[3652ad35] | 380 | return _Semaphore_Translate_core_semaphore_return_code( |
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| 381 | _Thread_Executing->Wait.return_code ); |
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[ac7d5ef0] | 382 | } |
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| 383 | } |
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| 384 | |
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[3652ad35] | 385 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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[ac7d5ef0] | 386 | } |
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| 387 | |
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| 388 | /*PAGE |
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| 389 | * |
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| 390 | * rtems_semaphore_release |
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| 391 | * |
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| 392 | * This directive allows a thread to release a semaphore. |
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| 393 | * |
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| 394 | * Input parameters: |
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| 395 | * id - semaphore id |
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| 396 | * |
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| 397 | * Output parameters: |
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| 398 | * RTEMS_SUCCESSFUL - if successful |
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| 399 | * error code - if unsuccessful |
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| 400 | */ |
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| 401 | |
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| 402 | rtems_status_code rtems_semaphore_release( |
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| 403 | Objects_Id id |
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| 404 | ) |
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| 405 | { |
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| 406 | register Semaphore_Control *the_semaphore; |
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| 407 | Objects_Locations location; |
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[3a4ae6c] | 408 | CORE_mutex_Status mutex_status; |
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| 409 | CORE_semaphore_Status semaphore_status; |
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[ac7d5ef0] | 410 | |
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| 411 | the_semaphore = _Semaphore_Get( id, &location ); |
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| 412 | switch ( location ) { |
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| 413 | case OBJECTS_ERROR: |
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[3652ad35] | 414 | return RTEMS_INVALID_ID; |
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[ac7d5ef0] | 415 | case OBJECTS_REMOTE: |
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[3652ad35] | 416 | return _Semaphore_MP_Send_request_packet( |
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| 417 | SEMAPHORE_MP_RELEASE_REQUEST, |
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| 418 | id, |
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| 419 | 0, /* Not used */ |
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| 420 | MPCI_DEFAULT_TIMEOUT |
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[ac7d5ef0] | 421 | ); |
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| 422 | case OBJECTS_LOCAL: |
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[3a4ae6c] | 423 | if ( _Attributes_Is_binary_semaphore( the_semaphore->attribute_set ) ) { |
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| 424 | mutex_status = _CORE_mutex_Surrender( |
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| 425 | &the_semaphore->Core_control.mutex, |
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| 426 | id, |
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| 427 | _Semaphore_Core_mutex_mp_support |
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| 428 | ); |
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| 429 | _Thread_Enable_dispatch(); |
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[3652ad35] | 430 | return _Semaphore_Translate_core_mutex_return_code( mutex_status ); |
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[ac7d5ef0] | 431 | } |
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[3a4ae6c] | 432 | else |
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| 433 | semaphore_status = _CORE_semaphore_Surrender( |
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| 434 | &the_semaphore->Core_control.semaphore, |
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| 435 | id, |
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| 436 | _Semaphore_Core_semaphore_mp_support |
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| 437 | ); |
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| 438 | _Thread_Enable_dispatch(); |
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[3652ad35] | 439 | return |
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| 440 | _Semaphore_Translate_core_semaphore_return_code( semaphore_status ); |
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[3a4ae6c] | 441 | } |
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[ac7d5ef0] | 442 | |
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[3652ad35] | 443 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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[3a4ae6c] | 444 | } |
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[ac7d5ef0] | 445 | |
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[3a4ae6c] | 446 | /*PAGE |
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| 447 | * |
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| 448 | * _Semaphore_Translate_core_mutex_return_code |
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| 449 | * |
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| 450 | * Input parameters: |
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| 451 | * the_mutex_status - mutex status code to translate |
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| 452 | * |
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| 453 | * Output parameters: |
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| 454 | * rtems status code - translated RTEMS status code |
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| 455 | * |
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| 456 | */ |
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| 457 | |
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| 458 | rtems_status_code _Semaphore_Translate_core_mutex_return_code ( |
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| 459 | unsigned32 the_mutex_status |
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| 460 | ) |
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| 461 | { |
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| 462 | switch ( the_mutex_status ) { |
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| 463 | case CORE_MUTEX_STATUS_SUCCESSFUL: |
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[3652ad35] | 464 | return RTEMS_SUCCESSFUL; |
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[3a4ae6c] | 465 | case CORE_MUTEX_STATUS_UNSATISFIED_NOWAIT: |
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[3652ad35] | 466 | return RTEMS_UNSATISFIED; |
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[3a4ae6c] | 467 | case CORE_MUTEX_STATUS_NESTING_NOT_ALLOWED: |
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[3652ad35] | 468 | return RTEMS_INTERNAL_ERROR; |
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[3a4ae6c] | 469 | case CORE_MUTEX_STATUS_NOT_OWNER_OF_RESOURCE: |
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[3652ad35] | 470 | return RTEMS_NOT_OWNER_OF_RESOURCE; |
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[3a4ae6c] | 471 | case CORE_MUTEX_WAS_DELETED: |
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[3652ad35] | 472 | return RTEMS_OBJECT_WAS_DELETED; |
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[3a4ae6c] | 473 | case CORE_MUTEX_TIMEOUT: |
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[3652ad35] | 474 | return RTEMS_TIMEOUT; |
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[3a4ae6c] | 475 | case THREAD_STATUS_PROXY_BLOCKING: |
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[3652ad35] | 476 | return THREAD_STATUS_PROXY_BLOCKING; |
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[ac7d5ef0] | 477 | } |
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[3652ad35] | 478 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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[ac7d5ef0] | 479 | } |
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| 480 | |
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| 481 | /*PAGE |
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| 482 | * |
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[3a4ae6c] | 483 | * _Semaphore_Translate_core_semaphore_return_code |
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[ac7d5ef0] | 484 | * |
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| 485 | * Input parameters: |
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[3a4ae6c] | 486 | * the_semaphore_status - semaphore status code to translate |
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[ac7d5ef0] | 487 | * |
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| 488 | * Output parameters: |
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[3a4ae6c] | 489 | * rtems status code - translated RTEMS status code |
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[ac7d5ef0] | 490 | * |
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| 491 | */ |
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[3a4ae6c] | 492 | |
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| 493 | rtems_status_code _Semaphore_Translate_core_semaphore_return_code ( |
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| 494 | unsigned32 the_semaphore_status |
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[ac7d5ef0] | 495 | ) |
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| 496 | { |
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[3a4ae6c] | 497 | switch ( the_semaphore_status ) { |
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| 498 | case CORE_SEMAPHORE_STATUS_SUCCESSFUL: |
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[3652ad35] | 499 | return RTEMS_SUCCESSFUL; |
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[3a4ae6c] | 500 | case CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT: |
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[3652ad35] | 501 | return RTEMS_UNSATISFIED; |
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[3a4ae6c] | 502 | case CORE_SEMAPHORE_WAS_DELETED: |
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[3652ad35] | 503 | return RTEMS_OBJECT_WAS_DELETED; |
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[3a4ae6c] | 504 | case CORE_SEMAPHORE_TIMEOUT: |
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[3652ad35] | 505 | return RTEMS_TIMEOUT; |
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[3a4ae6c] | 506 | case THREAD_STATUS_PROXY_BLOCKING: |
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[3652ad35] | 507 | return THREAD_STATUS_PROXY_BLOCKING; |
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[ac7d5ef0] | 508 | } |
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[3652ad35] | 509 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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[3a4ae6c] | 510 | } |
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[ac7d5ef0] | 511 | |
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[3a4ae6c] | 512 | /*PAGE |
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| 513 | * |
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| 514 | * _Semaphore_Core_mutex_mp_support |
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| 515 | * |
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| 516 | * Input parameters: |
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| 517 | * the_thread - the remote thread the semaphore was surrendered to |
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| 518 | * id - id of the surrendered semaphore |
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| 519 | * |
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| 520 | * Output parameters: NONE |
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| 521 | */ |
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| 522 | |
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| 523 | void _Semaphore_Core_mutex_mp_support ( |
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| 524 | Thread_Control *the_thread, |
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| 525 | Objects_Id id |
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| 526 | ) |
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| 527 | { |
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| 528 | the_thread->receive_packet->return_code = RTEMS_SUCCESSFUL; |
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| 529 | |
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| 530 | _Semaphore_MP_Send_response_packet( |
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| 531 | SEMAPHORE_MP_OBTAIN_RESPONSE, |
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| 532 | id, |
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| 533 | the_thread |
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| 534 | ); |
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| 535 | } |
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[ac7d5ef0] | 536 | |
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| 537 | |
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[3a4ae6c] | 538 | /*PAGE |
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| 539 | * |
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| 540 | * _Semaphore_Core_semaphore_mp_support |
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| 541 | * |
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| 542 | * Input parameters: |
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| 543 | * the_thread - the remote thread the semaphore was surrendered to |
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| 544 | * id - id of the surrendered semaphore |
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| 545 | * |
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| 546 | * Output parameters: NONE |
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| 547 | */ |
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| 548 | |
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| 549 | void _Semaphore_Core_semaphore_mp_support ( |
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| 550 | Thread_Control *the_thread, |
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| 551 | Objects_Id id |
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| 552 | ) |
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| 553 | { |
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| 554 | the_thread->receive_packet->return_code = RTEMS_SUCCESSFUL; |
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| 555 | |
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| 556 | _Semaphore_MP_Send_response_packet( |
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| 557 | SEMAPHORE_MP_OBTAIN_RESPONSE, |
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| 558 | id, |
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| 559 | the_thread |
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| 560 | ); |
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[ac7d5ef0] | 561 | } |
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