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/* mqueue.h
 *
 *  $Id: mqueue.h,v 1.2 2001-09-27 11:59:13 chris Exp $
 */
 
#ifndef __POSIX_MESSAGE_QUEUE_h
#define __POSIX_MESSAGE_QUEUE_h
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <sys/features.h>
 
#if defined(_POSIX_MESSAGE_PASSING)
 
#include <sys/types.h>
 
#include <rtems/system.h>
#include <rtems/score/object.h>
 
/*
 *  15.1.1 Data Structures, P1003.1b-1993, p. 271
 */
 
typedef Objects_Id  mqd_t;
 
struct mq_attr {
  long  mq_flags;     /* Message queue flags */
  long  mq_maxmsg;    /* Maximum number of messages */
  long  mq_msgsize;   /* Maximum message size */
  long  mq_curmsgs;   /* Number of messages currently queued */
};
 
/*
 *  15.2.2 Open a Message Queue, P1003.1b-1993, p. 272
 */
 
mqd_t mq_open(
  const char *name,
  int         oflag,
  ...
);
 
/*
 *  15.2.2 Close a Message Queue, P1003.1b-1993, p. 275
 */
 
int mq_close(
  mqd_t  mqdes
);
 
/*
 *  15.2.2 Remove a Message Queue, P1003.1b-1993, p. 276
 */
 
int mq_unlink(
  const char *name
);
 
/*
 *  15.2.4 Send a Message to a Message Queue, P1003.1b-1993, p. 277
 *
 *  NOTE: P1003.4b/D8, p. 45 adds mq_timedsend().
 */
 
int mq_send(
  mqd_t         mqdes,
  const char   *msg_ptr,
  size_t        msg_len,
  unsigned int  msg_prio
);
 
#if defined(_POSIX_TIMEOUTS)
 
#include <time.h>
 
int mq_timedsend(
  mqd_t                  mqdes,
  const char            *msg_ptr,
  size_t                 msg_len,
  unsigned int           msg_prio,
  const struct timespec *timeout
);
 
#endif /* _POSIX_TIMEOUTS */
 
/*
 *  15.2.5 Receive a Message From a Message Queue, P1003.1b-1993, p. 279
 *
 *  NOTE: P1003.4b/D8, p. 45 adds mq_timedreceive().
 */
 
ssize_t mq_receive(
  mqd_t         mqdes,
  char         *msg_ptr,
  size_t        msg_len,
  unsigned int *msg_prio
);
 
#if defined(_POSIX_TIMEOUTS)
 
int mq_timedreceive(                  /* XXX: should this be ssize_t */
  mqd_t                  mqdes,
  char                  *msg_ptr,
  size_t                 msg_len,
  unsigned int          *msg_prio,
  const struct timespec *timeout
);
 
#endif /* _POSIX_TIMEOUTS */
 
#if defined(_POSIX_REALTIME_SIGNALS)
 
/*
 *  15.2.6 Notify Process that a Message is Available on a Queue,
 *         P1003.1b-1993, p. 280
 */
 
int mq_notify(
  mqd_t                  mqdes,
  const struct sigevent *notification
);
 
#endif /* _POSIX_REALTIME_SIGNALS */
 
/*
 *  15.2.7 Set Message Queue Attributes, P1003.1b-1993, p. 281
 */
 
int mq_setattr(
  mqd_t                 mqdes,
  const struct mq_attr *mqstat,
  struct mq_attr       *omqstat
);
 
/*
 *  15.2.8 Get Message Queue Attributes, P1003.1b-1993, p. 283
 */
 
int mq_getattr(
  mqd_t           mqdes,
  struct mq_attr *mqstat
);
 
#endif /* _POSIX_MESSAGE_PASSING */
 
#ifdef __cplusplus
}
#endif
 
#endif
/* end of include file */

Line No.	Rev	Author	Line
1	30	unneback	`/* mqueue.h`
2			`*`
3			`* $Id: mqueue.h,v 1.2 2001-09-27 11:59:13 chris Exp $`
4			`*/`
5
6			`#ifndef __POSIX_MESSAGE_QUEUE_h`
7			`#define __POSIX_MESSAGE_QUEUE_h`
8
9			`#ifdef __cplusplus`
10			`extern "C" {`
11			`#endif`
12
13			`#include <sys/features.h>`
14
15			`#if defined(_POSIX_MESSAGE_PASSING)`
16
17			`#include <sys/types.h>`
18
19			`#include <rtems/system.h>`
20			`#include <rtems/score/object.h>`
21
22			`/*`
23			`* 15.1.1 Data Structures, P1003.1b-1993, p. 271`
24			`*/`
25
26			`typedef Objects_Id mqd_t;`
27
28			`struct mq_attr {`
29			`long mq_flags; /* Message queue flags */`
30			`long mq_maxmsg; /* Maximum number of messages */`
31			`long mq_msgsize; /* Maximum message size */`
32			`long mq_curmsgs; /* Number of messages currently queued */`
33			`};`
34
35			`/*`
36			`* 15.2.2 Open a Message Queue, P1003.1b-1993, p. 272`
37			`*/`
38
39			`mqd_t mq_open(`
40			`const char *name,`
41			`int oflag,`
42			`...`
43			`);`
44
45			`/*`
46			`* 15.2.2 Close a Message Queue, P1003.1b-1993, p. 275`
47			`*/`
48
49			`int mq_close(`
50			`mqd_t mqdes`
51			`);`
52
53			`/*`
54			`* 15.2.2 Remove a Message Queue, P1003.1b-1993, p. 276`
55			`*/`
56
57			`int mq_unlink(`
58			`const char *name`
59			`);`
60
61			`/*`
62			`* 15.2.4 Send a Message to a Message Queue, P1003.1b-1993, p. 277`
63			`*`
64			`* NOTE: P1003.4b/D8, p. 45 adds mq_timedsend().`
65			`*/`
66
67			`int mq_send(`
68			`mqd_t mqdes,`
69			`const char *msg_ptr,`
70			`size_t msg_len,`
71			`unsigned int msg_prio`
72			`);`
73
74			`#if defined(_POSIX_TIMEOUTS)`
75
76			`#include <time.h>`
77
78			`int mq_timedsend(`
79			`mqd_t mqdes,`
80			`const char *msg_ptr,`
81			`size_t msg_len,`
82			`unsigned int msg_prio,`
83			`const struct timespec *timeout`
84			`);`
85
86			`#endif /* _POSIX_TIMEOUTS */`
87
88			`/*`
89			`* 15.2.5 Receive a Message From a Message Queue, P1003.1b-1993, p. 279`
90			`*`
91			`* NOTE: P1003.4b/D8, p. 45 adds mq_timedreceive().`
92			`*/`
93
94			`ssize_t mq_receive(`
95			`mqd_t mqdes,`
96			`char *msg_ptr,`
97			`size_t msg_len,`
98			`unsigned int *msg_prio`
99			`);`
100
101			`#if defined(_POSIX_TIMEOUTS)`
102
103			`int mq_timedreceive( /* XXX: should this be ssize_t */`
104			`mqd_t mqdes,`
105			`char *msg_ptr,`
106			`size_t msg_len,`
107			`unsigned int *msg_prio,`
108			`const struct timespec *timeout`
109			`);`
110
111			`#endif /* _POSIX_TIMEOUTS */`
112
113			`#if defined(_POSIX_REALTIME_SIGNALS)`
114
115			`/*`
116			`* 15.2.6 Notify Process that a Message is Available on a Queue,`
117			`* P1003.1b-1993, p. 280`
118			`*/`
119
120			`int mq_notify(`
121			`mqd_t mqdes,`
122			`const struct sigevent *notification`
123			`);`
124
125			`#endif /* _POSIX_REALTIME_SIGNALS */`
126
127			`/*`
128			`* 15.2.7 Set Message Queue Attributes, P1003.1b-1993, p. 281`
129			`*/`
130
131			`int mq_setattr(`
132			`mqd_t mqdes,`
133			`const struct mq_attr *mqstat,`
134			`struct mq_attr *omqstat`
135			`);`
136
137			`/*`
138			`* 15.2.8 Get Message Queue Attributes, P1003.1b-1993, p. 283`
139			`*/`
140
141			`int mq_getattr(`
142			`mqd_t mqdes,`
143			`struct mq_attr *mqstat`
144			`);`
145
146			`#endif /* _POSIX_MESSAGE_PASSING */`
147
148			`#ifdef __cplusplus`
149			`}`
150			`#endif`
151
152			`#endif`
153			`/* end of include file */`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [include/] [mqueue.h] - Blame information for rev 773