RTEMS: cpukit/include/mqueue.h Source File

| RTEMS 5.4-rc2

Loading...
Searching...
No Matches
mqueue.h
Go to the documentation of this file.
1
21/*
22 * COPYRIGHT (c) 1989-2011.
23 * On-Line Applications Research Corporation (OAR).
24 *
25 * The license and distribution terms for this file may be
26 * found in the file LICENSE in this distribution or at
27 * http://www.rtems.org/license/LICENSE.
28 */
29
30#ifndef _MQUEUE_H
31#define _MQUEUE_H
32
33
34#include <unistd.h>
35
36#if defined(_POSIX_MESSAGE_PASSING)
37
38#include <sys/types.h>
39
48#ifdef __cplusplus
49extern "C" {
50#endif
51
52/*
53 * 15.1.1 Data Structures, P1003.1b-1993, p. 271
54 */
55
61typedef uint32_t mqd_t;
62
66struct mq_attr {
68 long mq_flags;
70 long mq_maxmsg;
72 long mq_msgsize;
74 long mq_curmsgs;
75};
76
80mqd_t mq_open(
81 const char *name,
82 int oflag,
83 ...
84);
85
89int mq_close(
90 mqd_t mqdes
91);
92
110int mq_unlink(
111 const char *name
112);
113
119int mq_send(
120 mqd_t mqdes,
121 const char *msg_ptr,
122 size_t msg_len,
123 unsigned int msg_prio
124);
125
126#if defined(_POSIX_TIMEOUTS)
127
128#include <time.h>
129
135int mq_timedsend(
136 mqd_t mqdes,
137 const char *msg_ptr,
138 size_t msg_len,
139 unsigned int msg_prio,
140 const struct timespec *abstime
141);
142
143#endif /* _POSIX_TIMEOUTS */
144
152ssize_t mq_receive(
153 mqd_t mqdes,
154 char *msg_ptr,
155 size_t msg_len,
156 unsigned int *msg_prio
157);
158
159#if defined(_POSIX_TIMEOUTS)
160
161ssize_t mq_timedreceive(
162 mqd_t mqdes,
163 char *__restrict msg_ptr,
164 size_t msg_len,
165 unsigned int *__restrict msg_prio,
166 const struct timespec *__restrict abstime
167);
168
169#endif /* _POSIX_TIMEOUTS */
170
171#if defined(_POSIX_REALTIME_SIGNALS)
172
179int mq_notify(
180 mqd_t mqdes,
181 const struct sigevent *notification
182);
183
184#endif /* _POSIX_REALTIME_SIGNALS */
185
191int mq_setattr(
192 mqd_t mqdes,
193 const struct mq_attr *__restrict mqstat,
194 struct mq_attr *__restrict omqstat
195);
196
197/*
198 * 15.2.8 Get Message Queue Attributes, P1003.1b-1993, p. 283
199 */
200
201int mq_getattr(
202 mqd_t mqdes,
203 struct mq_attr *mqstat
204);
205
208#ifdef __cplusplus
209}
210#endif
211
212#endif /* _POSIX_MESSAGE_PASSING */
213
214#endif
215/* end of include file */