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mqueue.h(3head)

mqueue.h(3HEAD)                     Headers                    mqueue.h(3HEAD)

NAME
       mqueue.h, mqueue - message queues

SYNOPSIS
       #include <mqueue.h>

DESCRIPTION
       The <mqueue.h> header defines the mqd_t type, which is used for message
       queue  descriptors. This will not be an array type. A message queue de‐
       scriptor may be implemented using a file descriptor, in which case  ap‐
       plications can open up to at least OPEN_MAX file and message queues.


       The  <mqueue.h>  header defines the sigevent structure (as described in
       <signal.h>, see signal.h(3HEAD)) and the mq_attr  structure,  which  is
       used  in getting and setting the attributes of a message queue. Attrib‐
       utes are initially set when the message queue  is  created.  A  mq_attr
       structure has the following members:

         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



       Inclusion  of the <mqueue.h> header may make visible symbols defined in
       the headers <fcntl.h>, <signal.h>, <sys/types.h>, and <time.h>.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE  VALUE  _  Interface  StabilityCommitted  _  StandardSee  stan‐
       dards(7).


SEE ALSO
       fcntl.h(3HEAD), signal.h(3HEAD), time.h(3HEAD), types.h(3HEAD), attrib‐
       utes(7), standards(7)

Oracle Solaris 11.4               30 Aug 2002                  mqueue.h(3HEAD)
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