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#

#  README.mqueue,v 1.2 2001/01/12 13:34:24 joel Exp

#

This program should print out the default attribute settings for a

POSIX message queue.

#include 

#include 

main()

{

  mqd_t mqfd;

  struct mq_attr mqstat;

  int status;

  /* this should create it */

  mqfd = mq_open("myipc",O_WRONLY|O_CREAT,NULL);

  if ( (int)mqfd == -1 ) {

    perror( "Unable to open message queue" );

    exit( 1 );

  }

  status = mq_getattr(mqfd, &mqstat);

  if ( !status ) {

    printf( "mq_maxmsg: %d\n", mqstat.mq_maxmsg );

    printf( "mq_msgsize: %d\n", mqstat.mq_msgsize );

    printf( "mq_curmsgs: %d\n", mqstat.mq_curmsgs );

  } else {

    perror( "Unable to get attributes on message queue" );

    exit( 1 );

  }

  /* this should delete it */

  (void) mq_close( mqfd );

  exit( 0 );

}