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>Message Passing [POSIX Section 15]</TITLE
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>eCos Reference Manual</TH
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>Prev</A
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>Chapter 31. POSIX Standard Support</TD
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NAME="POSIX-MESSAGE-PASSING">Message Passing &#0091;POSIX Section 15&#0093;</H1
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NAME="AEN13246">Functions Implemented</H2
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>mqd&#0095;t mq&#0095;open( const char &#0042;name, int  oflag, ... );
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int mq&#0095;close( mqd&#0095;t  mqdes );
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int mq&#0095;unlink( const char &#0042;name );
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int mq&#0095;send( mqd&#0095;t mqdes, const char &#0042;msg&#0095;ptr,
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             size&#0095;t msg&#0095;len, unsigned int msg&#0095;prio );
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ssize&#0095;t mq&#0095;receive( mqd&#0095;t mqdes, char &#0042;msg&#0095;ptr,
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                    size&#0095;t msg&#0095;len, unsigned int &#0042;msg&#0095;prio );
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int mq&#0095;setattr( mqd&#0095;t mqdes, const struct mq&#0095;attr &#0042;mqstat,
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                struct mq&#0095;attr &#0042;omqstat );
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int mq&#0095;getattr( mqd&#0095;t mqdes, struct mq&#0095;attr &#0042;mqstat );
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int mq&#0095;notify( mqd&#0095;t mqdes, const struct sigevent &#0042;notification );</PRE
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>From POSIX 1003.1d draft: </P
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>int mq&#0095;send( mqd&#0095;t mqdes, const char &#0042;msg&#0095;ptr,
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             size&#0095;t msg&#0095;len, unsigned int msg&#0095;prio,
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             const struct timespec *abs_timeout );
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ssize&#0095;t mq&#0095;receive( mqd&#0095;t mqdes, char &#0042;msg&#0095;ptr,
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                    size&#0095;t msg&#0095;len, unsigned int &#0042;msg&#0095;prio,
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             const struct timespec *abs_timeout );</PRE
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NAME="AEN13251">Functions Omitted</H2
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>&lt;none&gt;</P
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NAME="AEN13254">Notes</H2
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>    The presence of message queues is controlled by the
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    CYGPKG&#0095;POSIX&#0095;MQUEUES option.  Setting this will
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    cause &#0091;&#0095;POSIX&#0095;MESSAGE&#0095;PASSING&#0093; to
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    be defined and the message queue API to be made available.
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    </P
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>    Message queues are not currently filesystem objects. They live in
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    their own name and descriptor spaces.
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>Clocks and Timers &#0091;POSIX Section 14&#0093;</TD
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