summaryrefslogtreecommitdiffstats
path: root/cpukit/rtems/src/eventmp.c
blob: 4bc5925c2a6e9b98707e5c3e1978b01bf171ac81 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/*
 *  Multiprocessing Support for the Event Manager
 *
 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
 *  On-Line Applications Research Corporation (OAR).
 *  All rights assigned to U.S. Government, 1994.
 *
 *  This material may be reproduced by or for the U.S. Government pursuant
 *  to the copyright license under the clause at DFARS 252.227-7013.  This
 *  notice must appear in all copies of this file and its derivatives.
 *
 *  $Id$
 */

#include <rtems/system.h>
#include <rtems/event.h>
#include <rtems/mpci.h>
#include <rtems/mppkt.h>
#include <rtems/object.h>
#include <rtems/options.h>
#include <rtems/states.h>
#include <rtems/thread.h>

/*PAGE
 *
 *  _Event_MP_Send_process_packet
 *
 *  This subprogram is not needed since there are no process
 *  packets to be sent by this manager.
 *
 */

/*PAGE
 *
 *  _Event_MP_Send_request_packet
 *
 */

rtems_status_code _Event_MP_Send_request_packet (
  Event_MP_Remote_operations operation,
  Objects_Id                 event_id,
  rtems_event_set         event_in
)
{
  Event_MP_Packet *the_packet;

  switch ( operation ) {

    case EVENT_MP_SEND_REQUEST:

      the_packet                    = _Event_MP_Get_packet();
      the_packet->Prefix.the_class  = RTEMS_MP_PACKET_EVENT;
      the_packet->Prefix.length     = sizeof ( Event_MP_Packet );
      the_packet->Prefix.to_convert = sizeof ( Event_MP_Packet );
      the_packet->operation         = operation;
      the_packet->Prefix.id         = event_id;
      the_packet->event_in          = event_in;

      return
        _MPCI_Send_request_packet(
          rtems_get_node( event_id ),
          &the_packet->Prefix,
          STATES_READY
        );

      break;

    case EVENT_MP_SEND_RESPONSE:
      break;

  }
  /*
   *  The following line is included to satisfy compilers which
   *  produce warnings when a function does not end with a return.
   */
  return RTEMS_SUCCESSFUL;
}

/*PAGE
 *
 *  _Event_MP_Send_response_packet
 *
 */

void _Event_MP_Send_response_packet (
  Event_MP_Remote_operations  operation,
  Thread_Control             *the_thread
)
{
  Event_MP_Packet *the_packet;

  switch ( operation ) {

    case EVENT_MP_SEND_RESPONSE:

      the_packet = ( Event_MP_Packet *) the_thread->receive_packet;

/*
 *  The packet being returned already contains the class, length, and
 *  to_convert fields, therefore they are not set in this routine.
 */
      the_packet->operation = operation;
      the_packet->Prefix.id = the_packet->Prefix.source_tid;

      _MPCI_Send_response_packet(
        rtems_get_node( the_packet->Prefix.source_tid ),
        &the_packet->Prefix
      );
      break;

    case EVENT_MP_SEND_REQUEST:
      break;

  }
}

/*PAGE
 *
 *
 *  _Event_MP_Process_packet
 *
 */

void _Event_MP_Process_packet (
  rtems_packet_prefix  *the_packet_prefix
)
{
  Event_MP_Packet *the_packet;
  Thread_Control  *the_thread;

  the_packet = (Event_MP_Packet *) the_packet_prefix;

  switch ( the_packet->operation ) {

    case EVENT_MP_SEND_REQUEST:

      the_packet->Prefix.return_code = rtems_event_send(
        the_packet->Prefix.id,
        the_packet->event_in
      );

      _Event_MP_Send_response_packet(
        EVENT_MP_SEND_RESPONSE,
        _Thread_Executing
      );
      break;

    case EVENT_MP_SEND_RESPONSE:

      the_thread = _MPCI_Process_response( the_packet_prefix );

      _MPCI_Return_packet( the_packet_prefix );

      break;

  }
}

/*PAGE
 *
 *  _Event_MP_Send_object_was_deleted
 *
 *  This subprogram is not needed since there are no objects
 *  deleted by this manager.
 *
 */

/*PAGE
 *
 *  _Event_MP_Send_extract_proxy
 *
 *  This subprogram is not needed since there are no objects
 *  deleted by this manager.
 *
 */

/*PAGE
 *
 *  _Event_MP_Get_packet
 *
 */

Event_MP_Packet *_Event_MP_Get_packet ( void )
{
  return ( (Event_MP_Packet *) _MPCI_Get_packet() );
}

/* end of file */