1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief rtems_message_queue_send |
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5 | * @ingroup ClassicMessageQueue Message Queues |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2014. |
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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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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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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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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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24 | #include <rtems/score/coremsgimpl.h> |
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25 | #include <rtems/score/thread.h> |
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26 | #include <rtems/score/wkspace.h> |
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27 | #include <rtems/rtems/status.h> |
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28 | #include <rtems/rtems/attrimpl.h> |
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29 | #include <rtems/rtems/messageimpl.h> |
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30 | #include <rtems/rtems/options.h> |
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31 | #include <rtems/rtems/support.h> |
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32 | |
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33 | /* |
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34 | * |
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35 | * rtems_message_queue_send |
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36 | * |
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37 | * This routine implements the directive rtems_message_queue_send. It sends a |
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38 | * message to the specified message queue. |
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39 | * |
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40 | * Input parameters: |
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41 | * id - pointer to message queue |
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42 | * buffer - pointer to message buffer |
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43 | * size - size of message to send |
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44 | * |
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45 | * Output parameters: |
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46 | * RTEMS_SUCCESSFUL - if successful |
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47 | * error code - if unsuccessful |
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48 | */ |
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49 | |
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50 | #if defined(RTEMS_MULTIPROCESSING) |
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51 | #define MESSAGE_QUEUE_MP_HANDLER _Message_queue_Core_message_queue_mp_support |
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52 | #else |
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53 | #define MESSAGE_QUEUE_MP_HANDLER NULL |
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54 | #endif |
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55 | |
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56 | rtems_status_code rtems_message_queue_send( |
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57 | rtems_id id, |
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58 | const void *buffer, |
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59 | size_t size |
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60 | ) |
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61 | { |
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62 | Message_queue_Control *the_message_queue; |
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63 | Objects_Locations location; |
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64 | CORE_message_queue_Status status; |
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65 | ISR_lock_Context lock_context; |
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66 | |
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67 | if ( !buffer ) |
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68 | return RTEMS_INVALID_ADDRESS; |
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69 | |
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70 | the_message_queue = _Message_queue_Get_interrupt_disable( |
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71 | id, |
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72 | &location, |
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73 | &lock_context |
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74 | ); |
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75 | switch ( location ) { |
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76 | |
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77 | case OBJECTS_LOCAL: |
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78 | status = _CORE_message_queue_Send( |
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79 | &the_message_queue->message_queue, |
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80 | buffer, |
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81 | size, |
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82 | id, |
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83 | MESSAGE_QUEUE_MP_HANDLER, |
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84 | false, /* sender does not block */ |
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85 | 0, /* no timeout */ |
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86 | &lock_context |
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87 | ); |
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88 | |
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89 | /* |
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90 | * Since this API does not allow for blocking sends, we can directly |
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91 | * return the returned status. |
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92 | */ |
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93 | |
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94 | return _Message_queue_Translate_core_message_queue_return_code(status); |
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95 | |
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96 | #if defined(RTEMS_MULTIPROCESSING) |
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97 | case OBJECTS_REMOTE: |
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98 | return _Message_queue_MP_Send_request_packet( |
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99 | MESSAGE_QUEUE_MP_SEND_REQUEST, |
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100 | id, |
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101 | buffer, |
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102 | &size, |
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103 | 0, /* option_set */ |
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104 | MPCI_DEFAULT_TIMEOUT |
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105 | ); |
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106 | break; |
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107 | #endif |
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108 | |
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109 | case OBJECTS_ERROR: |
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110 | break; |
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111 | } |
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112 | return RTEMS_INVALID_ID; |
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113 | } |
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