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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [include/] [mqueue.h] - Blame information for rev 484

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

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