1 | /* |
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2 | * Event Manager |
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3 | * |
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4 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * All rights assigned to U.S. Government, 1994. |
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7 | * |
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8 | * This material may be reproduced by or for the U.S. Government pursuant |
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9 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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10 | * notice must appear in all copies of this file and its derivatives. |
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11 | * |
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12 | * $Id$ |
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13 | */ |
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14 | |
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15 | #include <rtems/system.h> |
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16 | #include <rtems/rtems/status.h> |
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17 | #include <rtems/rtems/event.h> |
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18 | #include <rtems/score/isr.h> |
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19 | #include <rtems/score/object.h> |
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20 | #include <rtems/rtems/options.h> |
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21 | #include <rtems/score/states.h> |
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22 | #include <rtems/score/thread.h> |
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23 | #include <rtems/rtems/tasks.h> |
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24 | |
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25 | /*PAGE |
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26 | * |
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27 | * rtems_event_send |
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28 | * |
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29 | * This directive allows a thread send an event set to another thread. |
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30 | * |
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31 | * Input parameters: |
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32 | * id - thread id |
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33 | * event - event set |
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34 | * |
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35 | * Output parameters: |
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36 | * RTEMS_SUCCESSFUL - if successful |
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37 | * error code - if unsuccessful |
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38 | */ |
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39 | |
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40 | rtems_status_code rtems_event_send( |
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41 | Objects_Id id, |
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42 | rtems_event_set event_in |
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43 | ) |
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44 | { |
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45 | register Thread_Control *the_thread; |
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46 | Objects_Locations location; |
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47 | RTEMS_API_Control *api; |
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48 | |
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49 | the_thread = _Thread_Get( id, &location ); |
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50 | switch ( location ) { |
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51 | case OBJECTS_ERROR: |
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52 | return RTEMS_INVALID_ID; |
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53 | case OBJECTS_REMOTE: |
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54 | return( |
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55 | _Event_MP_Send_request_packet( |
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56 | EVENT_MP_SEND_REQUEST, |
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57 | id, |
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58 | event_in |
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59 | ) |
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60 | ); |
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61 | case OBJECTS_LOCAL: |
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62 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
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63 | _Event_sets_Post( event_in, &api->pending_events ); |
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64 | _Event_Surrender( the_thread ); |
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65 | _Thread_Enable_dispatch(); |
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66 | return RTEMS_SUCCESSFUL; |
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67 | } |
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68 | |
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69 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
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70 | } |
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71 | |
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72 | /*PAGE |
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73 | * |
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74 | * rtems_event_receive |
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75 | * |
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76 | * This directive allows a thread to receive a set of events. |
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77 | * |
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78 | * Input parameters: |
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79 | * event_in - input event condition |
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80 | * option_set - options |
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81 | * ticks - number of ticks to wait (0 means wait forever) |
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82 | * event_out - pointer to output event set |
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83 | * |
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84 | * Output parameters: |
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85 | * event out - event set |
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86 | * RTEMS_SUCCESSFUL - if successful |
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87 | * error code - if unsuccessful |
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88 | */ |
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89 | |
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90 | rtems_status_code rtems_event_receive( |
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91 | rtems_event_set event_in, |
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92 | rtems_option option_set, |
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93 | rtems_interval ticks, |
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94 | rtems_event_set *event_out |
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95 | ) |
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96 | { |
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97 | RTEMS_API_Control *api; |
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98 | |
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99 | api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ]; |
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100 | |
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101 | if ( _Event_sets_Is_empty( event_in ) ) { |
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102 | *event_out = api->pending_events; |
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103 | return RTEMS_SUCCESSFUL; |
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104 | } |
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105 | |
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106 | _Thread_Disable_dispatch(); |
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107 | _Event_Seize( event_in, option_set, ticks, event_out ); |
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108 | _Thread_Enable_dispatch(); |
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109 | return( _Thread_Executing->Wait.return_code ); |
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110 | } |
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