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Full Discussion: regarding socket & mssage queue
Top Forums Programming regarding socket & mssage queue Post 302147677 by arunchaudhary19 on Wednesday 28th of November 2007 03:46:27 AM
Old 11-28-2007
Quote:
How are you marking the length of a message with writing to the pipe? Are you writing the length first, then the bytes, and when it comes to reading you read the length first, then that exact number of bytes?
NO.....currently I am not considering length........because first I am testing for fixed size string.........
how should I make my child not to interfear with parents data.........
because I will not terminate my child then the code.......after read and write operation is executed twice once by parent and one by child.......

how should i use my child process......???? so that it also continously read data from message queue and write to pipe....
 

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LEARN ABOUT HPUX

mq_close

mq_close(2)							System Calls Manual						       mq_close(2)

NAME

       mq_close - close a message queue descriptor

SYNOPSIS

DESCRIPTION

       The  system  call  removes  the	association  between  the  message queue descriptor, mqdes, and a message queue. Use of this message queue
       descriptor by the process, after a successful return from this and until this descriptor is returned by a subsequent  will  result  in  the
       failure of message queue system calls, with set to

       If  the	process  has a registered notification request with the message queue associated with this mqdes, the registration is canceled and
       the queue becomes available for another process to register a notification request.

       If the message queue has been unlinked and mqdes is the only existing open descriptor for the queue, the queue is destroyed.

       To use this function, link in the realtime library by specifying on the compiler or linker command line.

RETURN VALUE

       returns the following values:

	      Successful completion.

	      Failure.
		   is set to indicate the error.

ERRORS

       If fails, is set to one of the following values:

	      mqdes	     is not a valid message queue descriptor.

	      is not supported by the implementation.

SEE ALSO

       mq_open(2), mq_unlink(2), mq_notify(2).

STANDARDS CONFORMANCE

																       mq_close(2)
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