msg_stat_queue() - semaphore函数

梵高2年前 (2023-11-21)阅读数 22#技术干货

msg_stat_queue()

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

Returns information from the message queue data structure

说明

msg_stat_queue(resource $queue): array

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

参数

$queue

Message queue resource handle

返回值

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 message 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 message to the queue.
msg_lrpid	The pid of the process that received the last message from the queue.

参见

msg_remove_queue()Destroy a message queue
msg_receive()Receive a message from a message queue
msg_get_queue()Create or attach to a message queue
msg_set_queue()Set information in the message queue data structure

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