[f7f1d77] | 1 | /** |
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| 2 | * @file |
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[d65c3768] | 3 | * |
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[f7f1d77] | 4 | * @brief Insert a Message into the Message Queue |
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| 5 | * @ingroup ScoreMessageQueue |
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| 6 | */ |
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| 7 | |
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| 8 | /* |
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[2bbe78a2] | 9 | * COPYRIGHT (c) 1989-2005. |
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[d65c3768] | 10 | * On-Line Applications Research Corporation (OAR). |
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| 11 | * |
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| 12 | * The license and distribution terms for this file may be |
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| 13 | * found in the file LICENSE in this distribution or at |
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[c499856] | 14 | * http://www.rtems.org/license/LICENSE. |
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[d65c3768] | 15 | */ |
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| 16 | |
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[a8eed23] | 17 | #if HAVE_CONFIG_H |
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| 18 | #include "config.h" |
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| 19 | #endif |
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| 20 | |
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[d65c3768] | 21 | #include <rtems/system.h> |
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| 22 | #include <rtems/score/chain.h> |
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| 23 | #include <rtems/score/isr.h> |
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[b5d514f] | 24 | #include <rtems/score/coremsgimpl.h> |
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[d65c3768] | 25 | #include <rtems/score/thread.h> |
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| 26 | #include <rtems/score/wkspace.h> |
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| 27 | |
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| 28 | void _CORE_message_queue_Insert_message( |
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| 29 | CORE_message_queue_Control *the_message_queue, |
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| 30 | CORE_message_queue_Buffer_control *the_message, |
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| 31 | CORE_message_queue_Submit_types submit_type |
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| 32 | ) |
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| 33 | { |
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[2bbe78a2] | 34 | ISR_Level level; |
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[507d382] | 35 | #if defined(RTEMS_SCORE_COREMSG_ENABLE_NOTIFICATION) |
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| 36 | bool notify = false; |
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| 37 | #define SET_NOTIFY() \ |
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[f8b7c83d] | 38 | do { \ |
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[49460dc] | 39 | if ( the_message_queue->number_of_pending_messages == 0 ) \ |
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[f8b7c83d] | 40 | notify = true; \ |
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| 41 | } while (0) |
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[507d382] | 42 | #else |
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| 43 | #define SET_NOTIFY() |
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| 44 | #endif |
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[d65c3768] | 45 | |
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[939ba81] | 46 | _CORE_message_queue_Set_message_priority( the_message, submit_type ); |
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[d65c3768] | 47 | |
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[507d382] | 48 | #if !defined(RTEMS_SCORE_COREMSG_ENABLE_MESSAGE_PRIORITY) |
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| 49 | _ISR_Disable( level ); |
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| 50 | SET_NOTIFY(); |
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| 51 | the_message_queue->number_of_pending_messages++; |
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| 52 | if ( submit_type == CORE_MESSAGE_QUEUE_SEND_REQUEST ) |
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| 53 | _CORE_message_queue_Append_unprotected(the_message_queue, the_message); |
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| 54 | else |
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| 55 | _CORE_message_queue_Prepend_unprotected(the_message_queue, the_message); |
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| 56 | _ISR_Enable( level ); |
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| 57 | #else |
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| 58 | if ( submit_type == CORE_MESSAGE_QUEUE_SEND_REQUEST ) { |
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[2bbe78a2] | 59 | _ISR_Disable( level ); |
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[507d382] | 60 | SET_NOTIFY(); |
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| 61 | the_message_queue->number_of_pending_messages++; |
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[2bbe78a2] | 62 | _CORE_message_queue_Append_unprotected(the_message_queue, the_message); |
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| 63 | _ISR_Enable( level ); |
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[507d382] | 64 | } else if ( submit_type == CORE_MESSAGE_QUEUE_URGENT_REQUEST ) { |
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[2bbe78a2] | 65 | _ISR_Disable( level ); |
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[507d382] | 66 | SET_NOTIFY(); |
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| 67 | the_message_queue->number_of_pending_messages++; |
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[2bbe78a2] | 68 | _CORE_message_queue_Prepend_unprotected(the_message_queue, the_message); |
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| 69 | _ISR_Enable( level ); |
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[507d382] | 70 | } else { |
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| 71 | CORE_message_queue_Buffer_control *this_message; |
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| 72 | Chain_Node *the_node; |
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| 73 | Chain_Control *the_header; |
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[939ba81] | 74 | int the_priority; |
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[d65c3768] | 75 | |
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[939ba81] | 76 | the_priority = _CORE_message_queue_Get_message_priority(the_message); |
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[507d382] | 77 | the_header = &the_message_queue->Pending_messages; |
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[ce002b16] | 78 | the_node = _Chain_First( the_header ); |
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[507d382] | 79 | while ( !_Chain_Is_tail( the_header, the_node ) ) { |
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[939ba81] | 80 | int this_priority; |
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[d65c3768] | 81 | |
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[507d382] | 82 | this_message = (CORE_message_queue_Buffer_control *) the_node; |
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[d65c3768] | 83 | |
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[939ba81] | 84 | this_priority = _CORE_message_queue_Get_message_priority(this_message); |
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| 85 | |
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| 86 | if ( this_priority <= the_priority ) { |
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[507d382] | 87 | the_node = the_node->next; |
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| 88 | continue; |
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[d65c3768] | 89 | } |
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[507d382] | 90 | break; |
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[d65c3768] | 91 | } |
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[507d382] | 92 | _ISR_Disable( level ); |
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| 93 | SET_NOTIFY(); |
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| 94 | the_message_queue->number_of_pending_messages++; |
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| 95 | _Chain_Insert_unprotected( the_node->previous, &the_message->Node ); |
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| 96 | _ISR_Enable( level ); |
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| 97 | } |
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| 98 | #endif |
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[d65c3768] | 99 | |
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[507d382] | 100 | #if defined(RTEMS_SCORE_COREMSG_ENABLE_NOTIFICATION) |
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| 101 | /* |
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| 102 | * According to POSIX, does this happen before or after the message |
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| 103 | * is actually enqueued. It is logical to think afterwards, because |
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| 104 | * the message is actually in the queue at this point. |
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| 105 | */ |
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| 106 | if ( notify && the_message_queue->notify_handler ) |
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| 107 | (*the_message_queue->notify_handler)(the_message_queue->notify_argument); |
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| 108 | #endif |
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[d65c3768] | 109 | } |
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