%PDF-
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Mini Shell
Mini Shell
<?php
/**
* @link https://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license https://www.yiiframework.com/license/
*/
namespace yii\queue\cli;
use yii\base\BaseObject;
/**
* Signal Loop.
*
* @author Roman Zhuravlev <zhuravljov@gmail.com>
* @since 2.0.2
*/
class SignalLoop extends BaseObject implements LoopInterface
{
/**
* @var array of signals to exit from listening of the queue.
*/
public $exitSignals = [
15, // SIGTERM
2, // SIGINT
1, // SIGHUP
];
/**
* @var array of signals to suspend listening of the queue.
* For example: SIGTSTP
*/
public $suspendSignals = [];
/**
* @var array of signals to resume listening of the queue.
* For example: SIGCONT
*/
public $resumeSignals = [];
/**
* @var Queue
*/
protected $queue;
/**
* @var bool status when exit signal was got.
*/
private static $exit = false;
/**
* @var bool status when suspend or resume signal was got.
*/
private static $pause = false;
/**
* @param Queue $queue
* @inheritdoc
*/
public function __construct($queue, array $config = [])
{
$this->queue = $queue;
parent::__construct($config);
}
/**
* Sets signal handlers.
*
* @inheritdoc
*/
public function init()
{
parent::init();
if (extension_loaded('pcntl') && function_exists('pcntl_signal')) {
foreach ($this->exitSignals as $signal) {
pcntl_signal($signal, function () {
self::$exit = true;
});
}
foreach ($this->suspendSignals as $signal) {
pcntl_signal($signal, function () {
self::$pause = true;
});
}
foreach ($this->resumeSignals as $signal) {
pcntl_signal($signal, function () {
self::$pause = false;
});
}
}
}
/**
* Checks signals state.
*
* @inheritdoc
*/
public function canContinue()
{
if (extension_loaded('pcntl') && function_exists('pcntl_signal_dispatch')) {
pcntl_signal_dispatch();
// Wait for resume signal until loop is suspended
while (self::$pause && !self::$exit) {
usleep(10000);
pcntl_signal_dispatch();
}
}
return !self::$exit;
}
}
Zerion Mini Shell 1.0