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|
<?php
namespace React\EventLoop;
use BadMethodCallException;
use libev\EventLoop;
use libev\IOEvent;
use libev\SignalEvent;
use libev\TimerEvent;
use React\EventLoop\Tick\FutureTickQueue;
use React\EventLoop\Timer\Timer;
use SplObjectStorage;
/**
* [Deprecated] An `ext-libev` based event loop.
*
* This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev),
* that provides an interface to `libev` library.
* `libev` itself supports a number of system-specific backends (epoll, kqueue).
*
* This loop does only work with PHP 5.
* An update for PHP 7 is [unlikely](https://github.com/m4rw3r/php-libev/issues/8)
* to happen any time soon.
*
* @see https://github.com/m4rw3r/php-libev
* @see https://gist.github.com/1688204
* @deprecated 1.2.0, use [`ExtEvLoop`](#extevloop) instead.
*/
final class ExtLibevLoop implements LoopInterface
{
private $loop;
private $futureTickQueue;
private $timerEvents;
private $readEvents = array();
private $writeEvents = array();
private $running;
private $signals;
private $signalEvents = array();
public function __construct()
{
if (!\class_exists('libev\EventLoop', false)) {
throw new BadMethodCallException('Cannot create ExtLibevLoop, ext-libev extension missing');
}
$this->loop = new EventLoop();
$this->futureTickQueue = new FutureTickQueue();
$this->timerEvents = new SplObjectStorage();
$this->signals = new SignalsHandler();
}
public function addReadStream($stream, $listener)
{
if (isset($this->readEvents[(int) $stream])) {
return;
}
$callback = function () use ($stream, $listener) {
\call_user_func($listener, $stream);
};
$event = new IOEvent($callback, $stream, IOEvent::READ);
$this->loop->add($event);
$this->readEvents[(int) $stream] = $event;
}
public function addWriteStream($stream, $listener)
{
if (isset($this->writeEvents[(int) $stream])) {
return;
}
$callback = function () use ($stream, $listener) {
\call_user_func($listener, $stream);
};
$event = new IOEvent($callback, $stream, IOEvent::WRITE);
$this->loop->add($event);
$this->writeEvents[(int) $stream] = $event;
}
public function removeReadStream($stream)
{
$key = (int) $stream;
if (isset($this->readEvents[$key])) {
$this->readEvents[$key]->stop();
$this->loop->remove($this->readEvents[$key]);
unset($this->readEvents[$key]);
}
}
public function removeWriteStream($stream)
{
$key = (int) $stream;
if (isset($this->writeEvents[$key])) {
$this->writeEvents[$key]->stop();
$this->loop->remove($this->writeEvents[$key]);
unset($this->writeEvents[$key]);
}
}
public function addTimer($interval, $callback)
{
$timer = new Timer( $interval, $callback, false);
$that = $this;
$timers = $this->timerEvents;
$callback = function () use ($timer, $timers, $that) {
\call_user_func($timer->getCallback(), $timer);
if ($timers->contains($timer)) {
$that->cancelTimer($timer);
}
};
$event = new TimerEvent($callback, $timer->getInterval());
$this->timerEvents->attach($timer, $event);
$this->loop->add($event);
return $timer;
}
public function addPeriodicTimer($interval, $callback)
{
$timer = new Timer($interval, $callback, true);
$callback = function () use ($timer) {
\call_user_func($timer->getCallback(), $timer);
};
$event = new TimerEvent($callback, $timer->getInterval(), $timer->getInterval());
$this->timerEvents->attach($timer, $event);
$this->loop->add($event);
return $timer;
}
public function cancelTimer(TimerInterface $timer)
{
if (isset($this->timerEvents[$timer])) {
$this->loop->remove($this->timerEvents[$timer]);
$this->timerEvents->detach($timer);
}
}
public function futureTick($listener)
{
$this->futureTickQueue->add($listener);
}
public function addSignal($signal, $listener)
{
$this->signals->add($signal, $listener);
if (!isset($this->signalEvents[$signal])) {
$signals = $this->signals;
$this->signalEvents[$signal] = new SignalEvent(function () use ($signals, $signal) {
$signals->call($signal);
}, $signal);
$this->loop->add($this->signalEvents[$signal]);
}
}
public function removeSignal($signal, $listener)
{
$this->signals->remove($signal, $listener);
if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
$this->signalEvents[$signal]->stop();
$this->loop->remove($this->signalEvents[$signal]);
unset($this->signalEvents[$signal]);
}
}
public function run()
{
$this->running = true;
while ($this->running) {
$this->futureTickQueue->tick();
$flags = EventLoop::RUN_ONCE;
if (!$this->running || !$this->futureTickQueue->isEmpty()) {
$flags |= EventLoop::RUN_NOWAIT;
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
break;
}
$this->loop->run($flags);
}
}
public function stop()
{
$this->running = false;
}
}
|
