[ac7d5ef0] | 1 | /* |
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| 2 | * Multiprocessing Support for the Region Manager |
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| 3 | * |
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| 4 | * |
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[03f2154e] | 5 | * COPYRIGHT (c) 1989-1997. |
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[ac7d5ef0] | 6 | * On-Line Applications Research Corporation (OAR). |
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[03f2154e] | 7 | * Copyright assigned to U.S. Government, 1994. |
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[ac7d5ef0] | 8 | * |
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[98e4ebf5] | 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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[03f2154e] | 11 | * http://www.OARcorp.com/rtems/license.html. |
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[ac7d5ef0] | 12 | * |
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| 13 | * $Id$ |
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| 14 | */ |
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| 15 | |
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| 16 | #include <rtems/system.h> |
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[3a4ae6c] | 17 | #include <rtems/rtems/status.h> |
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[5e9b32b] | 18 | #include <rtems/score/mpci.h> |
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| 19 | #include <rtems/score/mppkt.h> |
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| 20 | #include <rtems/score/object.h> |
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[3a4ae6c] | 21 | #include <rtems/rtems/options.h> |
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| 22 | #include <rtems/rtems/region.h> |
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[5e9b32b] | 23 | #include <rtems/score/thread.h> |
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[3a4ae6c] | 24 | #include <rtems/rtems/support.h> |
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[ac7d5ef0] | 25 | |
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| 26 | /*PAGE |
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| 27 | * |
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| 28 | * _Region_MP_Send_process_packet |
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| 29 | * |
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| 30 | */ |
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| 31 | |
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| 32 | void _Region_MP_Send_process_packet ( |
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| 33 | Region_MP_Remote_operations operation, |
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| 34 | Objects_Id region_id, |
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[3235ad9] | 35 | rtems_name name, |
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[ac7d5ef0] | 36 | Objects_Id proxy_id |
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| 37 | ) |
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| 38 | { |
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| 39 | Region_MP_Packet *the_packet; |
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| 40 | unsigned32 node; |
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| 41 | |
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| 42 | switch ( operation ) { |
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| 43 | |
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| 44 | case REGION_MP_ANNOUNCE_CREATE: |
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| 45 | case REGION_MP_ANNOUNCE_DELETE: |
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| 46 | case REGION_MP_EXTRACT_PROXY: |
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| 47 | |
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| 48 | the_packet = _Region_MP_Get_packet(); |
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[3a4ae6c] | 49 | the_packet->Prefix.the_class = MP_PACKET_REGION; |
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[ac7d5ef0] | 50 | the_packet->Prefix.length = sizeof ( Region_MP_Packet ); |
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| 51 | the_packet->Prefix.to_convert = sizeof ( Region_MP_Packet ); |
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| 52 | the_packet->operation = operation; |
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| 53 | the_packet->Prefix.id = region_id; |
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| 54 | the_packet->name = name; |
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| 55 | the_packet->proxy_id = proxy_id; |
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| 56 | |
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| 57 | if ( operation == REGION_MP_EXTRACT_PROXY ) |
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| 58 | node = rtems_get_node( region_id ); |
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| 59 | else |
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| 60 | node = MPCI_ALL_NODES; |
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| 61 | |
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| 62 | _MPCI_Send_process_packet( node, &the_packet->Prefix ); |
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| 63 | break; |
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| 64 | |
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| 65 | case REGION_MP_GET_SEGMENT_REQUEST: |
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| 66 | case REGION_MP_GET_SEGMENT_RESPONSE: |
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| 67 | case REGION_MP_RETURN_SEGMENT_REQUEST: |
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| 68 | case REGION_MP_RETURN_SEGMENT_RESPONSE: |
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| 69 | break; |
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| 70 | } |
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| 71 | } |
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| 72 | |
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| 73 | /*PAGE |
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| 74 | * |
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| 75 | * _Region_MP_Send_request_packet |
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| 76 | * |
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| 77 | */ |
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| 78 | |
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| 79 | rtems_status_code _Region_MP_Send_request_packet ( |
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| 80 | Region_MP_Remote_operations operation, |
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| 81 | Objects_Id region_id, |
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| 82 | void *segment, |
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| 83 | unsigned32 size, |
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[3a4ae6c] | 84 | rtems_option option_set, |
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| 85 | rtems_interval timeout |
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[ac7d5ef0] | 86 | ) |
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| 87 | { |
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| 88 | Region_MP_Packet *the_packet; |
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| 89 | |
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| 90 | switch ( operation ) { |
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| 91 | |
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| 92 | case REGION_MP_GET_SEGMENT_REQUEST: |
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| 93 | case REGION_MP_RETURN_SEGMENT_REQUEST: |
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| 94 | |
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| 95 | the_packet = _Region_MP_Get_packet(); |
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[3a4ae6c] | 96 | the_packet->Prefix.the_class = MP_PACKET_REGION; |
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[ac7d5ef0] | 97 | the_packet->Prefix.length = sizeof ( Region_MP_Packet ); |
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| 98 | the_packet->Prefix.to_convert = sizeof ( Region_MP_Packet ); |
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| 99 | if ( ! _Options_Is_no_wait(option_set)) |
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| 100 | the_packet->Prefix.timeout = timeout; |
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| 101 | |
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| 102 | the_packet->operation = operation; |
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| 103 | the_packet->Prefix.id = region_id; |
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| 104 | the_packet->segment = segment; |
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| 105 | the_packet->size = size; |
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| 106 | the_packet->option_set = option_set; |
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| 107 | |
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[ffe316d] | 108 | return (rtems_status_code) _MPCI_Send_request_packet( |
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[ac7d5ef0] | 109 | rtems_get_node( region_id ), |
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| 110 | &the_packet->Prefix, |
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| 111 | STATES_READY /* Not used */ |
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| 112 | ); |
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| 113 | break; |
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| 114 | |
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| 115 | case REGION_MP_ANNOUNCE_CREATE: |
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| 116 | case REGION_MP_ANNOUNCE_DELETE: |
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| 117 | case REGION_MP_EXTRACT_PROXY: |
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| 118 | case REGION_MP_GET_SEGMENT_RESPONSE: |
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| 119 | case REGION_MP_RETURN_SEGMENT_RESPONSE: |
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| 120 | break; |
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| 121 | |
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| 122 | } |
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| 123 | /* |
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| 124 | * The following line is included to satisfy compilers which |
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| 125 | * produce warnings when a function does not end with a return. |
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| 126 | */ |
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| 127 | return RTEMS_INTERNAL_ERROR; |
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| 128 | } |
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| 129 | |
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| 130 | /*PAGE |
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| 131 | * |
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| 132 | * _Region_MP_Send_response_packet |
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| 133 | * |
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| 134 | */ |
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| 135 | |
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| 136 | void _Region_MP_Send_response_packet ( |
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| 137 | Region_MP_Remote_operations operation, |
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| 138 | Objects_Id region_id, |
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| 139 | Thread_Control *the_thread |
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| 140 | ) |
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| 141 | { |
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| 142 | Region_MP_Packet *the_packet; |
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| 143 | |
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| 144 | switch ( operation ) { |
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| 145 | |
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| 146 | case REGION_MP_GET_SEGMENT_RESPONSE: |
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| 147 | case REGION_MP_RETURN_SEGMENT_RESPONSE: |
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| 148 | |
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| 149 | the_packet = ( Region_MP_Packet *) the_thread->receive_packet; |
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| 150 | |
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| 151 | /* |
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| 152 | * The packet being returned already contains the class, length, and |
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| 153 | * to_convert fields, therefore they are not set in this routine. |
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| 154 | */ |
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| 155 | the_packet->operation = operation; |
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| 156 | the_packet->Prefix.id = the_packet->Prefix.source_tid; |
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| 157 | |
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| 158 | _MPCI_Send_response_packet( |
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| 159 | rtems_get_node( the_packet->Prefix.source_tid ), |
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| 160 | &the_packet->Prefix |
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| 161 | ); |
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| 162 | break; |
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| 163 | |
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| 164 | case REGION_MP_ANNOUNCE_CREATE: |
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| 165 | case REGION_MP_ANNOUNCE_DELETE: |
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| 166 | case REGION_MP_EXTRACT_PROXY: |
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| 167 | case REGION_MP_GET_SEGMENT_REQUEST: |
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| 168 | case REGION_MP_RETURN_SEGMENT_REQUEST: |
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| 169 | break; |
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| 170 | |
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| 171 | } |
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| 172 | } |
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| 173 | |
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| 174 | /*PAGE |
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| 175 | * |
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| 176 | * |
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| 177 | * _Region_MP_Process_packet |
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| 178 | * |
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| 179 | */ |
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| 180 | |
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| 181 | void _Region_MP_Process_packet ( |
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| 182 | rtems_packet_prefix *the_packet_prefix |
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| 183 | ) |
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| 184 | { |
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| 185 | Region_MP_Packet *the_packet; |
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| 186 | Thread_Control *the_thread; |
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| 187 | boolean ignored; |
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| 188 | |
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| 189 | the_packet = (Region_MP_Packet *) the_packet_prefix; |
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| 190 | |
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| 191 | switch ( the_packet->operation ) { |
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| 192 | |
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| 193 | case REGION_MP_ANNOUNCE_CREATE: |
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| 194 | |
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[7f6a24ab] | 195 | ignored = _Objects_MP_Allocate_and_open( |
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[ac7d5ef0] | 196 | &_Region_Information, |
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| 197 | the_packet->name, |
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| 198 | the_packet->Prefix.id, |
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| 199 | TRUE |
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| 200 | ); |
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| 201 | |
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| 202 | _MPCI_Return_packet( the_packet_prefix ); |
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| 203 | break; |
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| 204 | |
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| 205 | case REGION_MP_ANNOUNCE_DELETE: |
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| 206 | |
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| 207 | _Objects_MP_Close( &_Region_Information, the_packet->Prefix.id ); |
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| 208 | |
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| 209 | _MPCI_Return_packet( the_packet_prefix ); |
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| 210 | break; |
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| 211 | |
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| 212 | case REGION_MP_EXTRACT_PROXY: |
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| 213 | |
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| 214 | the_thread = _Thread_MP_Find_proxy( the_packet->proxy_id ); |
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| 215 | |
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| 216 | if ( ! _Thread_Is_null( the_thread ) ) |
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| 217 | _Thread_queue_Extract( the_thread->Wait.queue, the_thread ); |
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| 218 | |
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| 219 | _MPCI_Return_packet( the_packet_prefix ); |
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| 220 | break; |
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| 221 | |
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| 222 | case REGION_MP_GET_SEGMENT_REQUEST: |
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| 223 | |
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| 224 | the_packet->Prefix.return_code = rtems_region_get_segment( |
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| 225 | the_packet->Prefix.id, |
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| 226 | the_packet->size, |
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| 227 | the_packet->option_set, |
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| 228 | the_packet->Prefix.timeout, |
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| 229 | &the_packet->segment |
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| 230 | ); |
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| 231 | |
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| 232 | _Region_MP_Send_response_packet( |
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| 233 | REGION_MP_GET_SEGMENT_RESPONSE, |
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| 234 | the_packet->Prefix.id, |
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| 235 | _Thread_Executing |
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| 236 | ); |
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| 237 | break; |
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| 238 | |
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| 239 | case REGION_MP_GET_SEGMENT_RESPONSE: |
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| 240 | |
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| 241 | the_thread = _MPCI_Process_response( the_packet_prefix ); |
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| 242 | |
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| 243 | *(void **)the_thread->Wait.return_argument = the_packet->segment; |
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| 244 | |
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| 245 | _MPCI_Return_packet( the_packet_prefix ); |
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| 246 | break; |
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| 247 | |
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| 248 | case REGION_MP_RETURN_SEGMENT_REQUEST: |
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| 249 | |
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| 250 | the_packet->Prefix.return_code = rtems_region_return_segment( |
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| 251 | the_packet->Prefix.id, |
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| 252 | the_packet->segment |
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| 253 | ); |
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| 254 | |
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| 255 | _Region_MP_Send_response_packet( |
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| 256 | REGION_MP_RETURN_SEGMENT_RESPONSE, |
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| 257 | the_packet->Prefix.id, |
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| 258 | _Thread_Executing |
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| 259 | ); |
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| 260 | break; |
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| 261 | |
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| 262 | case REGION_MP_RETURN_SEGMENT_RESPONSE: |
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| 263 | |
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| 264 | the_thread = _MPCI_Process_response( the_packet_prefix ); |
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| 265 | |
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| 266 | _MPCI_Return_packet( the_packet_prefix ); |
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| 267 | break; |
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| 268 | |
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| 269 | } |
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| 270 | } |
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| 271 | |
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| 272 | /*PAGE |
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| 273 | * |
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| 274 | * _Region_MP_Send_object_was_deleted |
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| 275 | * |
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| 276 | * This routine is not needed by the Region since a region |
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| 277 | * cannot be deleted when segments are in use. |
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| 278 | * |
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| 279 | */ |
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| 280 | |
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| 281 | /*PAGE |
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| 282 | * |
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| 283 | * _Region_MP_Send_extract_proxy |
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| 284 | * |
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| 285 | */ |
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| 286 | |
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| 287 | void _Region_MP_Send_extract_proxy ( |
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| 288 | Thread_Control *the_thread |
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| 289 | ) |
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| 290 | { |
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| 291 | _Region_MP_Send_process_packet( |
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| 292 | REGION_MP_EXTRACT_PROXY, |
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| 293 | the_thread->Wait.id, |
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[3235ad9] | 294 | (rtems_name) 0, |
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[ac7d5ef0] | 295 | the_thread->Object.id |
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| 296 | ); |
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| 297 | } |
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| 298 | |
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| 299 | /*PAGE |
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| 300 | * |
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| 301 | * _Region_MP_Get_packet |
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| 302 | * |
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| 303 | */ |
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| 304 | |
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| 305 | Region_MP_Packet *_Region_MP_Get_packet ( void ) |
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| 306 | { |
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| 307 | return ( (Region_MP_Packet *) _MPCI_Get_packet() ); |
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| 308 | } |
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| 309 | |
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| 310 | /* end of file */ |
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