Pipes.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2015 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------
namespace think\process\pipes;
abstract class Pipes
{
/** @var array */
public $pipes = [];
/** @var string */
protected $inputBuffer = '';
/** @var resource|null */
protected $input;
/** @var bool */
private $blocked = true;
const CHUNK_SIZE = 16384;
/**
* 返回用于 proc_open 描述符的数组
* @return array
*/
abstract public function getDescriptors();
/**
* 返回一个数组的索引由其相关的流，以防这些管道使用的临时文件的文件名。
* @return string[]
*/
abstract public function getFiles();
/**
* 文件句柄和管道中读取数据。
* @param bool $blocking 是否使用阻塞调用
* @param bool $close 是否要关闭管道，如果他们已经到达 EOF。
* @return string[]
*/
abstract public function readAndWrite($blocking, $close = false);
/**
* 返回当前状态如果有打开的文件句柄或管道。
* @return bool
*/
abstract public function areOpen();
/**
* {@inheritdoc}
*/
public function close()
{
foreach ($this->pipes as $pipe) {
fclose($pipe);
}
$this->pipes = [];
}
/**
* 检查系统调用已被中断
* @return bool
*/
protected function hasSystemCallBeenInterrupted()
{
$lastError = error_get_last();
return isset($lastError['message']) && false !== stripos($lastError['message'], 'interrupted system call');
}
protected function unblock()
{
if (!$this->blocked) {
return;
}
foreach ($this->pipes as $pipe) {
stream_set_blocking($pipe, 0);
}
if (null !== $this->input) {
stream_set_blocking($this->input, 0);
}
$this->blocked = false;
}
}