[9da0994] | 1 | /* |
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| 2 | * ITRON Message Buffer Manager |
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| 3 | * |
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[9d9a3dd] | 4 | * COPYRIGHT (c) 1989-1999. |
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| 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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[9da0994] | 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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| 9 | * http://www.OARcorp.com/rtems/license.html. |
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| 10 | * |
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| 11 | * $Id$ |
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| 12 | */ |
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| 13 | |
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| 14 | #include <itron.h> |
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| 15 | |
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| 16 | #include <rtems/itron/msgbuffer.h> |
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| 17 | #include <rtems/itron/task.h> |
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| 18 | |
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| 19 | /* |
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| 20 | * trcv_mbf - Receive Message from MessageBuffer with Timeout |
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| 21 | */ |
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| 22 | |
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| 23 | ER trcv_mbf( |
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| 24 | VP msg, |
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| 25 | INT *p_msgsz, |
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| 26 | ID mbfid, |
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| 27 | TMO tmout |
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| 28 | ) |
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| 29 | { |
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[c0d405ca] | 30 | ITRON_Message_buffer_Control *the_message_buffer; |
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| 31 | Objects_Locations location; |
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| 32 | CORE_message_queue_Status status; |
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| 33 | boolean wait; |
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| 34 | Watchdog_Interval interval; |
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| 35 | CORE_message_queue_Submit_types core_priority; |
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[9da0994] | 36 | |
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| 37 | interval = 0; |
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| 38 | if (tmout == TMO_POL) { |
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| 39 | wait = FALSE; |
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| 40 | } else { |
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| 41 | wait = TRUE; |
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| 42 | if (tmout != TMO_FEVR) |
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| 43 | interval = TOD_MILLISECONDS_TO_TICKS(tmout); |
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| 44 | } |
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| 45 | |
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| 46 | if (wait && _ITRON_Is_in_non_task_state() ) |
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| 47 | return E_CTX; |
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| 48 | |
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| 49 | if (!p_msgsz || !msg || tmout <= -2) |
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| 50 | return E_PAR; |
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| 51 | |
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| 52 | the_message_buffer = _ITRON_Message_buffer_Get(mbfid, &location); |
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| 53 | switch (location) { |
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| 54 | case OBJECTS_REMOTE: |
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| 55 | case OBJECTS_ERROR: /* Multiprocessing not supported */ |
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| 56 | return _ITRON_Message_buffer_Clarify_get_id_error(mbfid); |
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| 57 | |
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| 58 | case OBJECTS_LOCAL: |
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| 59 | _CORE_message_queue_Seize( |
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| 60 | &the_message_buffer->message_queue, |
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| 61 | the_message_buffer->Object.id, |
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| 62 | msg, |
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| 63 | p_msgsz, |
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| 64 | wait, |
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[c0d405ca] | 65 | &core_priority, |
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[9da0994] | 66 | interval |
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| 67 | ); |
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| 68 | _Thread_Enable_dispatch(); |
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| 69 | status = (CORE_message_queue_Status)_Thread_Executing->Wait.return_code; |
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| 70 | return |
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| 71 | _ITRON_Message_buffer_Translate_core_message_buffer_return_code(status); |
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| 72 | } |
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| 73 | |
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| 74 | /* |
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| 75 | * If multiprocessing were supported, this is where we would announce |
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| 76 | * the existence of the semaphore to the rest of the system. |
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| 77 | */ |
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| 78 | |
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| 79 | #if defined(RTEMS_MULTIPROCESSING) |
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| 80 | #endif |
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| 81 | return E_OK; |
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| 82 | } |
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