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<?php |
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/** |
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* Process Library |
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* @author Tao <[email protected]> |
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*/ |
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namespace Slince\Process\SystemV; |
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use Slince\Process\Exception\RuntimeException; |
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class MessageQueue |
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{ |
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use IpcKeyTrait; |
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/** |
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* The resource that can be used to access to the system v message queue |
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* @var resource |
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*/ |
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protected $mqId; |
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/** |
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* The message type |
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* @var int |
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*/ |
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protected $messageType; |
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protected $unserialize = true; |
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public function __construct($messageType = 1, $pathname = __FILE__, $mode = 0666) |
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{ |
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$this->messageType = $messageType; |
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$ipcKey = $this->generateIpcKey($pathname); |
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$this->mqId = msg_get_queue($ipcKey, $mode); |
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} |
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/** |
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* Sends the message to the queue |
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* @param string $message |
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* @param bool $blocking |
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* @return bool |
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*/ |
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public function send($message, $blocking = true) |
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{ |
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if (!msg_send( |
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$this->mqId, |
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$this->messageType, |
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$message, |
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$this->unserialize, |
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$blocking, |
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$errorCode |
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) |
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) { |
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throw new RuntimeException("Failed to send the message to the queue", $errorCode); |
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} |
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return true; |
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} |
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/** |
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* Gets the message from the queue |
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* @param bool $blocking |
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* @param int $maxSize The max size you want receive(Unit:bytes) |
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* @return string|false |
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*/ |
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public function receive($blocking = true, $maxSize = 10240) |
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{ |
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$flags = $blocking ? 0 : MSG_IPC_NOWAIT; |
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if (msg_receive( |
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$this->mqId, |
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$this->messageType, |
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$realMessageType, |
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$maxSize, |
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$message, |
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$this->unserialize, |
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$flags, |
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$errorCode |
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) |
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) { |
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return $message; |
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} |
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return false; |
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} |
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/** |
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* Sets information for the queue |
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* @param array $states |
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* @return bool |
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*/ |
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public function setStates(array $states) |
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{ |
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return msg_set_queue($this->mqId, $states); |
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} |
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/** |
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* Sets information for the queue by specifying the key and value |
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* @param string $key |
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* @param string|int $value |
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* @return bool |
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*/ |
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public function setState($key, $value) |
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{ |
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return $this->setStates([ |
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$key => $value |
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]); |
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} |
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/** |
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* Gets the information of the queue |
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* |
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* The return value is an array whose keys and values have the following meanings: |
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* Array structure for msg_stat_queue |
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* msg_perm.uid The uid of the owner of the queue. |
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* msg_perm.gid The gid of the owner of the queue. |
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* msg_perm.mode The file access mode of the queue. |
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* msg_stime The time that the last message was sent to the queue. |
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* msg_rtime The time that the last message was received from the queue. |
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* msg_ctime The time that the queue was last changed. |
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* msg_qnum The number of messages waiting to be read from the queue. |
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* 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. |
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* msg_lspid The pid of the process that sent the last message to the queue. |
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* msg_lrpid The pid of the process that received the last message from the queue. |
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* |
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* @return array |
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*/ |
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public function getState() |
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{ |
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return msg_stat_queue($this->mqId); |
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} |
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} |
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slince /
process
