144 lines
3.3 KiB
PHP
144 lines
3.3 KiB
PHP
<?php
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/**
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* @author Jenner <hypxm@qq.com>
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* @blog http://www.huyanping.cn
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* @license https://opensource.org/licenses/MIT MIT
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* @datetime: 2015/11/24 16:29
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*/
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namespace Jenner\SimpleFork\Queue;
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class Pipe
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{
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/**
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* @var resource
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*/
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protected $read;
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/**
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* @var resource
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*/
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protected $write;
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/**
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* @var string
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*/
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protected $filename;
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/**
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* @var bool
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*/
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protected $block;
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/**
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* @param string $filename fifo filename
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* @param int $mode
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* @param bool $block if blocking
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*/
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public function __construct($filename = '/tmp/simple-fork.pipe', $mode = 0666, $block = false)
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{
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if (!file_exists($filename) && !posix_mkfifo($filename, $mode)) {
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throw new \RuntimeException('create pipe failed');
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}
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if (filetype($filename) != 'fifo') {
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throw new \RuntimeException('file exists and it is not a fifo file');
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}
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$this->filename = $filename;
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$this->block = $block;
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}
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public function setBlock($block = true)
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{
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if (is_resource($this->read)) {
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$set = stream_set_blocking($this->read, $block);
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if (!$set) {
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throw new \RuntimeException('stream_set_blocking failed');
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}
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}
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if (is_resource($this->write)) {
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$set = stream_set_blocking($this->write, $block);
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if (!$set) {
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throw new \RuntimeException('stream_set_blocking failed');
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}
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}
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$this->block = $block;
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}
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/**
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* if the stream is blocking, you would better set the value of size,
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* it will not return until the data size is equal to the value of param size
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*
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* @param int $size
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* @return string
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*/
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public function read($size = 1024)
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{
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if (!is_resource($this->read)) {
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$this->read = fopen($this->filename, 'r+');
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if (!is_resource($this->read)) {
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throw new \RuntimeException('open file failed');
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}
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if (!$this->block) {
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$set = stream_set_blocking($this->read, false);
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if (!$set) {
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throw new \RuntimeException('stream_set_blocking failed');
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}
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}
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}
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return fread($this->read, $size);
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}
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/**
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* @param $message
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* @return int
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*/
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public function write($message)
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{
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if (!is_resource($this->write)) {
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$this->write = fopen($this->filename, 'w+');
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if (!is_resource($this->write)) {
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throw new \RuntimeException('open file failed');
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}
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if (!$this->block) {
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$set = stream_set_blocking($this->write, false);
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if (!$set) {
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throw new \RuntimeException('stream_set_blocking failed');
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}
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}
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}
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return fwrite($this->write, $message);
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}
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/**
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*
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*/
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public function __destruct()
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{
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$this->close();
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}
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/**
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*
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*/
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public function close()
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{
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if (is_resource($this->read)) {
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fclose($this->read);
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}
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if (is_resource($this->write)) {
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fclose($this->write);
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}
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}
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public function remove()
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{
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return unlink($this->filename);
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}
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}
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