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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
       descriptor  may  be  implemented using a file descriptor, in which case
       applications 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.
       Attributes  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),
       attributes(7), standards(7)



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