source: rtems/cpukit/rtems/src/signalsend.c @ 8d37343

4.104.114.84.95
Last change on this file since 8d37343 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/*
2 *  Signal Manager
3 *
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.OARcorp.com/rtems/license.html.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/rtems/status.h>
17#include <rtems/rtems/asr.h>
18#include <rtems/score/isr.h>
19#include <rtems/rtems/modes.h>
20#include <rtems/rtems/signal.h>
21#include <rtems/score/thread.h>
22#include <rtems/rtems/tasks.h>
23
24/*PAGE
25 *
26 *  rtems_signal_send
27 *
28 *  This directive allows a thread to send signals to a thread.
29 *
30 *  Input parameters:
31 *    id         - thread id
32 *    signal_set - signal set
33 *
34 *  Output parameters:
35 *    RTEMS_SUCCESSFUL - if successful
36 *    error code - if unsuccessful
37 */
38
39rtems_status_code rtems_signal_send(
40  Objects_Id             id,
41  rtems_signal_set signal_set
42)
43{
44  register Thread_Control *the_thread;
45  Objects_Locations        location;
46  RTEMS_API_Control       *api;
47  ASR_Information         *asr;
48
49  the_thread = _Thread_Get( id, &location );
50  switch ( location ) {
51
52    case OBJECTS_REMOTE:
53#if defined(RTEMS_MULTIPROCESSING)
54      return _Signal_MP_Send_request_packet(
55        SIGNAL_MP_SEND_REQUEST,
56        id,
57        signal_set
58      );
59#endif
60
61    case OBJECTS_ERROR:
62      return RTEMS_INVALID_ID;
63
64    case OBJECTS_LOCAL:
65      api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
66      asr = &api->Signal;
67
68      if ( ! _ASR_Is_null_handler( asr->handler ) ) {
69        if ( asr->is_enabled ) {
70          _ASR_Post_signals( signal_set, &asr->signals_posted );
71
72          the_thread->do_post_task_switch_extension = TRUE;
73
74          if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) )
75            _ISR_Signals_to_thread_executing = TRUE;
76        } else {
77          _ASR_Post_signals( signal_set, &asr->signals_pending );
78        }
79        _Thread_Enable_dispatch();
80        return RTEMS_SUCCESSFUL;
81      }
82      _Thread_Enable_dispatch();
83      return RTEMS_NOT_DEFINED;
84  }
85
86  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
87}
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