source: rtems/cpukit/rtems/src/signalsend.c @ a29d2e7

4.104.114.84.95
Last change on this file since a29d2e7 was 1095ec1, checked in by Ralf Corsepius <ralf.corsepius@…>, on 01/18/05 at 09:03:45

Include config.h.

  • Property mode set to 100644
File size: 2.2 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.rtems.com/license/LICENSE.
11 *
12 *  $Id$
13 */
14
15#if HAVE_CONFIG_H
16#include "config.h"
17#endif
18
19#include <rtems/system.h>
20#include <rtems/rtems/status.h>
21#include <rtems/rtems/asr.h>
22#include <rtems/score/isr.h>
23#include <rtems/rtems/modes.h>
24#include <rtems/rtems/signal.h>
25#include <rtems/score/thread.h>
26#include <rtems/rtems/tasks.h>
27
28/*PAGE
29 *
30 *  rtems_signal_send
31 *
32 *  This directive allows a thread to send signals to a thread.
33 *
34 *  Input parameters:
35 *    id         - thread id
36 *    signal_set - signal set
37 *
38 *  Output parameters:
39 *    RTEMS_SUCCESSFUL - if successful
40 *    error code       - if unsuccessful
41 */
42
43rtems_status_code rtems_signal_send(
44  Objects_Id        id,
45  rtems_signal_set  signal_set
46)
47{
48  register Thread_Control *the_thread;
49  Objects_Locations        location;
50  RTEMS_API_Control       *api;
51  ASR_Information         *asr;
52
53  if ( !signal_set )
54    return RTEMS_INVALID_NUMBER;
55
56  the_thread = _Thread_Get( id, &location );
57  switch ( location ) {
58
59    case OBJECTS_REMOTE:
60#if defined(RTEMS_MULTIPROCESSING)
61      return _Signal_MP_Send_request_packet(
62        SIGNAL_MP_SEND_REQUEST,
63        id,
64        signal_set
65      );
66#endif
67
68    case OBJECTS_ERROR:
69      return RTEMS_INVALID_ID;
70
71    case OBJECTS_LOCAL:
72      api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
73      asr = &api->Signal;
74
75      if ( ! _ASR_Is_null_handler( asr->handler ) ) {
76        if ( asr->is_enabled ) {
77          _ASR_Post_signals( signal_set, &asr->signals_posted );
78
79          the_thread->do_post_task_switch_extension = TRUE;
80
81          if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) )
82            _ISR_Signals_to_thread_executing = TRUE;
83        } else {
84          _ASR_Post_signals( signal_set, &asr->signals_pending );
85        }
86        _Thread_Enable_dispatch();
87        return RTEMS_SUCCESSFUL;
88      }
89      _Thread_Enable_dispatch();
90      return RTEMS_NOT_DEFINED;
91  }
92
93  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
94}
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