MSG_STAT_QUEUE(3)							 1							 MSG_STAT_QUEUE(3)

msg_stat_queue - Returns information from the message queue data structure

SYNOPSIS

       array msg_stat_queue (resource  $queue)

DESCRIPTION

       msg_stat_queue(3) returns the message queue meta data for the message queue specified by the $queue. This is useful, for example, to deter-
       mine which process sent the message that was just received.

PARAMETERS

	      o $queue
		- Message queue resource handle

RETURN VALUES

	The return value is an array whose keys and values have the following meanings:

       Array structure for msg_stat_queue

       +--------------+---------------------------------------------------+
       |	      | 						  |
       |msg_perm.uid  | 						  |
       |	      | 						  |
       |	      | 	The uid of the owner of the queue.	  |
       |	      | 						  |
       |	      | 						  |
       |msg_perm.gid  | 						  |
       |	      | 						  |
       |	      | 	The gid of the owner of the queue.	  |
       |	      | 						  |
       |	      | 						  |
       |msg_perm.mode | 						  |
       |	      | 						  |
       |	      | 	The file access mode of the queue.	  |
       |	      | 						  |
       |	      | 						  |
       |  msg_stime   | 						  |
       |	      | 						  |
       |	      |  The time that the last message was sent  to  the |
       |	      | queue.						  |
       |	      | 						  |
       |	      | 						  |
       |  msg_rtime   | 						  |
       |	      | 						  |
       |	      |  The time that the last message was received from |
       |	      | the queue.					  |
       |	      | 						  |
       |	      | 						  |
       |  msg_ctime   | 						  |
       |	      | 						  |
       |	      |     The time that the queue was last changed.	  |
       |	      | 						  |
       |	      | 						  |
       |  msg_qnum    | 						  |
       |	      | 						  |
       |	      |  The number of messages waiting to be  read  from |
       |	      | the queue.					  |
       |	      | 						  |
       |	      | 						  |
       | msg_qbytes   | 						  |
       |	      | 						  |
       |	      |  The  maximum number of bytes allowed in one mes- |
       |	      | sage queue. On Linux, this value may be read  and |
       |	      | modified via /proc/sys/kernel/msgmnb.		  |
       |	      | 						  |
       |	      | 						  |
       |  msg_lspid   | 						  |
       |	      | 						  |
       |	      |  The  pid  of the process that sent the last mes- |
       |	      | sage to the queue.				  |
       |	      | 						  |
       |	      | 						  |
       |  msg_lrpid   | 						  |
       |	      | 						  |
       |	      |  The pid of the process that  received	the  last |
       |	      | message from the queue. 			  |
       |	      | 						  |
       +--------------+---------------------------------------------------+
SEE ALSO

       msg_remove_queue(3), msg_receive(3), msg_get_queue(3), msg_set_queue(3).

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