diff options
Diffstat (limited to 'vendor/react/event-loop/src')
| -rw-r--r-- | vendor/react/event-loop/src/ExtEvLoop.php | 253 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/ExtEventLoop.php | 275 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/ExtLibevLoop.php | 201 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/ExtLibeventLoop.php | 285 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/ExtUvLoop.php | 342 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/Factory.php | 75 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/Loop.php | 225 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/LoopInterface.php | 472 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/SignalsHandler.php | 63 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/StreamSelectLoop.php | 329 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/Tick/FutureTickQueue.php | 60 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/Timer/Timer.php | 55 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/Timer/Timers.php | 112 | ||||
| -rw-r--r-- | vendor/react/event-loop/src/TimerInterface.php | 27 |
14 files changed, 2774 insertions, 0 deletions
diff --git a/vendor/react/event-loop/src/ExtEvLoop.php b/vendor/react/event-loop/src/ExtEvLoop.php new file mode 100644 index 0000000..a3fcec6 --- /dev/null +++ b/vendor/react/event-loop/src/ExtEvLoop.php @@ -0,0 +1,253 @@ +<?php + +namespace React\EventLoop; + +use Ev; +use EvIo; +use EvLoop; +use React\EventLoop\Tick\FutureTickQueue; +use React\EventLoop\Timer\Timer; +use SplObjectStorage; + +/** + * An `ext-ev` based event loop. + * + * This loop uses the [`ev` PECL extension](https://pecl.php.net/package/ev), + * that provides an interface to `libev` library. + * `libev` itself supports a number of system-specific backends (epoll, kqueue). + * + * This loop is known to work with PHP 5.4 through PHP 8+. + * + * @see http://php.net/manual/en/book.ev.php + * @see https://bitbucket.org/osmanov/pecl-ev/overview + */ +class ExtEvLoop implements LoopInterface +{ + /** + * @var EvLoop + */ + private $loop; + + /** + * @var FutureTickQueue + */ + private $futureTickQueue; + + /** + * @var SplObjectStorage + */ + private $timers; + + /** + * @var EvIo[] + */ + private $readStreams = array(); + + /** + * @var EvIo[] + */ + private $writeStreams = array(); + + /** + * @var bool + */ + private $running; + + /** + * @var SignalsHandler + */ + private $signals; + + /** + * @var \EvSignal[] + */ + private $signalEvents = array(); + + public function __construct() + { + $this->loop = new EvLoop(); + $this->futureTickQueue = new FutureTickQueue(); + $this->timers = new SplObjectStorage(); + $this->signals = new SignalsHandler(); + } + + public function addReadStream($stream, $listener) + { + $key = (int)$stream; + + if (isset($this->readStreams[$key])) { + return; + } + + $callback = $this->getStreamListenerClosure($stream, $listener); + $event = $this->loop->io($stream, Ev::READ, $callback); + $this->readStreams[$key] = $event; + } + + /** + * @param resource $stream + * @param callable $listener + * + * @return \Closure + */ + private function getStreamListenerClosure($stream, $listener) + { + return function () use ($stream, $listener) { + \call_user_func($listener, $stream); + }; + } + + public function addWriteStream($stream, $listener) + { + $key = (int)$stream; + + if (isset($this->writeStreams[$key])) { + return; + } + + $callback = $this->getStreamListenerClosure($stream, $listener); + $event = $this->loop->io($stream, Ev::WRITE, $callback); + $this->writeStreams[$key] = $event; + } + + public function removeReadStream($stream) + { + $key = (int)$stream; + + if (!isset($this->readStreams[$key])) { + return; + } + + $this->readStreams[$key]->stop(); + unset($this->readStreams[$key]); + } + + public function removeWriteStream($stream) + { + $key = (int)$stream; + + if (!isset($this->writeStreams[$key])) { + return; + } + + $this->writeStreams[$key]->stop(); + unset($this->writeStreams[$key]); + } + + public function addTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, false); + + $that = $this; + $timers = $this->timers; + $callback = function () use ($timer, $timers, $that) { + \call_user_func($timer->getCallback(), $timer); + + if ($timers->contains($timer)) { + $that->cancelTimer($timer); + } + }; + + $event = $this->loop->timer($timer->getInterval(), 0.0, $callback); + $this->timers->attach($timer, $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 = $this->loop->timer($timer->getInterval(), $timer->getInterval(), $callback); + $this->timers->attach($timer, $event); + + return $timer; + } + + public function cancelTimer(TimerInterface $timer) + { + if (!isset($this->timers[$timer])) { + return; + } + + $event = $this->timers[$timer]; + $event->stop(); + $this->timers->detach($timer); + } + + public function futureTick($listener) + { + $this->futureTickQueue->add($listener); + } + + public function run() + { + $this->running = true; + + while ($this->running) { + $this->futureTickQueue->tick(); + + $hasPendingCallbacks = !$this->futureTickQueue->isEmpty(); + $wasJustStopped = !$this->running; + $nothingLeftToDo = !$this->readStreams + && !$this->writeStreams + && !$this->timers->count() + && $this->signals->isEmpty(); + + $flags = Ev::RUN_ONCE; + if ($wasJustStopped || $hasPendingCallbacks) { + $flags |= Ev::RUN_NOWAIT; + } elseif ($nothingLeftToDo) { + break; + } + + $this->loop->run($flags); + } + } + + public function stop() + { + $this->running = false; + } + + public function __destruct() + { + /** @var TimerInterface $timer */ + foreach ($this->timers as $timer) { + $this->cancelTimer($timer); + } + + foreach ($this->readStreams as $key => $stream) { + $this->removeReadStream($key); + } + + foreach ($this->writeStreams as $key => $stream) { + $this->removeWriteStream($key); + } + } + + public function addSignal($signal, $listener) + { + $this->signals->add($signal, $listener); + + if (!isset($this->signalEvents[$signal])) { + $this->signalEvents[$signal] = $this->loop->signal($signal, function() use ($signal) { + $this->signals->call($signal); + }); + } + } + + public function removeSignal($signal, $listener) + { + $this->signals->remove($signal, $listener); + + if (isset($this->signalEvents[$signal])) { + $this->signalEvents[$signal]->stop(); + unset($this->signalEvents[$signal]); + } + } +} diff --git a/vendor/react/event-loop/src/ExtEventLoop.php b/vendor/react/event-loop/src/ExtEventLoop.php new file mode 100644 index 0000000..b162a40 --- /dev/null +++ b/vendor/react/event-loop/src/ExtEventLoop.php @@ -0,0 +1,275 @@ +<?php + +namespace React\EventLoop; + +use BadMethodCallException; +use Event; +use EventBase; +use React\EventLoop\Tick\FutureTickQueue; +use React\EventLoop\Timer\Timer; +use SplObjectStorage; + +/** + * An `ext-event` based event loop. + * + * This uses the [`event` PECL extension](https://pecl.php.net/package/event), + * that provides an interface to `libevent` library. + * `libevent` itself supports a number of system-specific backends (epoll, kqueue). + * + * This loop is known to work with PHP 5.4 through PHP 8+. + * + * @link https://pecl.php.net/package/event + */ +final class ExtEventLoop implements LoopInterface +{ + private $eventBase; + private $futureTickQueue; + private $timerCallback; + private $timerEvents; + private $streamCallback; + private $readEvents = array(); + private $writeEvents = array(); + private $readListeners = array(); + private $writeListeners = array(); + private $readRefs = array(); + private $writeRefs = array(); + private $running; + private $signals; + private $signalEvents = array(); + + public function __construct() + { + if (!\class_exists('EventBase', false)) { + throw new BadMethodCallException('Cannot create ExtEventLoop, ext-event extension missing'); + } + + // support arbitrary file descriptors and not just sockets + // Windows only has limited file descriptor support, so do not require this (will fail otherwise) + // @link http://www.wangafu.net/~nickm/libevent-book/Ref2_eventbase.html#_setting_up_a_complicated_event_base + $config = new \EventConfig(); + if (\DIRECTORY_SEPARATOR !== '\\') { + $config->requireFeatures(\EventConfig::FEATURE_FDS); + } + + $this->eventBase = new EventBase($config); + $this->futureTickQueue = new FutureTickQueue(); + $this->timerEvents = new SplObjectStorage(); + $this->signals = new SignalsHandler(); + + $this->createTimerCallback(); + $this->createStreamCallback(); + } + + public function __destruct() + { + // explicitly clear all references to Event objects to prevent SEGFAULTs on Windows + foreach ($this->timerEvents as $timer) { + $this->timerEvents->detach($timer); + } + + $this->readEvents = array(); + $this->writeEvents = array(); + } + + public function addReadStream($stream, $listener) + { + $key = (int) $stream; + if (isset($this->readListeners[$key])) { + return; + } + + $event = new Event($this->eventBase, $stream, Event::PERSIST | Event::READ, $this->streamCallback); + $event->add(); + $this->readEvents[$key] = $event; + $this->readListeners[$key] = $listener; + + // ext-event does not increase refcount on stream resources for PHP 7+ + // manually keep track of stream resource to prevent premature garbage collection + if (\PHP_VERSION_ID >= 70000) { + $this->readRefs[$key] = $stream; + } + } + + public function addWriteStream($stream, $listener) + { + $key = (int) $stream; + if (isset($this->writeListeners[$key])) { + return; + } + + $event = new Event($this->eventBase, $stream, Event::PERSIST | Event::WRITE, $this->streamCallback); + $event->add(); + $this->writeEvents[$key] = $event; + $this->writeListeners[$key] = $listener; + + // ext-event does not increase refcount on stream resources for PHP 7+ + // manually keep track of stream resource to prevent premature garbage collection + if (\PHP_VERSION_ID >= 70000) { + $this->writeRefs[$key] = $stream; + } + } + + public function removeReadStream($stream) + { + $key = (int) $stream; + + if (isset($this->readEvents[$key])) { + $this->readEvents[$key]->free(); + unset( + $this->readEvents[$key], + $this->readListeners[$key], + $this->readRefs[$key] + ); + } + } + + public function removeWriteStream($stream) + { + $key = (int) $stream; + + if (isset($this->writeEvents[$key])) { + $this->writeEvents[$key]->free(); + unset( + $this->writeEvents[$key], + $this->writeListeners[$key], + $this->writeRefs[$key] + ); + } + } + + public function addTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, false); + + $this->scheduleTimer($timer); + + return $timer; + } + + public function addPeriodicTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, true); + + $this->scheduleTimer($timer); + + return $timer; + } + + public function cancelTimer(TimerInterface $timer) + { + if ($this->timerEvents->contains($timer)) { + $this->timerEvents[$timer]->free(); + $this->timerEvents->detach($timer); + } + } + + public function futureTick($listener) + { + $this->futureTickQueue->add($listener); + } + + public function addSignal($signal, $listener) + { + $this->signals->add($signal, $listener); + + if (!isset($this->signalEvents[$signal])) { + $this->signalEvents[$signal] = Event::signal($this->eventBase, $signal, array($this->signals, 'call')); + $this->signalEvents[$signal]->add(); + } + } + + public function removeSignal($signal, $listener) + { + $this->signals->remove($signal, $listener); + + if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) { + $this->signalEvents[$signal]->free(); + unset($this->signalEvents[$signal]); + } + } + + public function run() + { + $this->running = true; + + while ($this->running) { + $this->futureTickQueue->tick(); + + $flags = EventBase::LOOP_ONCE; + if (!$this->running || !$this->futureTickQueue->isEmpty()) { + $flags |= EventBase::LOOP_NONBLOCK; + } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) { + break; + } + + $this->eventBase->loop($flags); + } + } + + public function stop() + { + $this->running = false; + } + + /** + * Schedule a timer for execution. + * + * @param TimerInterface $timer + */ + private function scheduleTimer(TimerInterface $timer) + { + $flags = Event::TIMEOUT; + + if ($timer->isPeriodic()) { + $flags |= Event::PERSIST; + } + + $event = new Event($this->eventBase, -1, $flags, $this->timerCallback, $timer); + $this->timerEvents[$timer] = $event; + + $event->add($timer->getInterval()); + } + + /** + * Create a callback used as the target of timer events. + * + * A reference is kept to the callback for the lifetime of the loop + * to prevent "Cannot destroy active lambda function" fatal error from + * the event extension. + */ + private function createTimerCallback() + { + $timers = $this->timerEvents; + $this->timerCallback = function ($_, $__, $timer) use ($timers) { + \call_user_func($timer->getCallback(), $timer); + + if (!$timer->isPeriodic() && $timers->contains($timer)) { + $this->cancelTimer($timer); + } + }; + } + + /** + * Create a callback used as the target of stream events. + * + * A reference is kept to the callback for the lifetime of the loop + * to prevent "Cannot destroy active lambda function" fatal error from + * the event extension. + */ + private function createStreamCallback() + { + $read =& $this->readListeners; + $write =& $this->writeListeners; + $this->streamCallback = function ($stream, $flags) use (&$read, &$write) { + $key = (int) $stream; + + if (Event::READ === (Event::READ & $flags) && isset($read[$key])) { + \call_user_func($read[$key], $stream); + } + + if (Event::WRITE === (Event::WRITE & $flags) && isset($write[$key])) { + \call_user_func($write[$key], $stream); + } + }; + } +} diff --git a/vendor/react/event-loop/src/ExtLibevLoop.php b/vendor/react/event-loop/src/ExtLibevLoop.php new file mode 100644 index 0000000..c303fdd --- /dev/null +++ b/vendor/react/event-loop/src/ExtLibevLoop.php @@ -0,0 +1,201 @@ +<?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() + { + $this->running = false; + } +} diff --git a/vendor/react/event-loop/src/ExtLibeventLoop.php b/vendor/react/event-loop/src/ExtLibeventLoop.php new file mode 100644 index 0000000..099293a --- /dev/null +++ b/vendor/react/event-loop/src/ExtLibeventLoop.php @@ -0,0 +1,285 @@ +<?php + +namespace React\EventLoop; + +use BadMethodCallException; +use Event; +use EventBase; +use React\EventLoop\Tick\FutureTickQueue; +use React\EventLoop\Timer\Timer; +use SplObjectStorage; + +/** + * [Deprecated] An `ext-libevent` based event loop. + * + * This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent), + * that provides an interface to `libevent` library. + * `libevent` itself supports a number of system-specific backends (epoll, kqueue). + * + * This event loop does only work with PHP 5. + * An [unofficial update](https://github.com/php/pecl-event-libevent/pull/2) for + * PHP 7 does exist, but it is known to cause regular crashes due to `SEGFAULT`s. + * To reiterate: Using this event loop on PHP 7 is not recommended. + * Accordingly, neither the [`Loop` class](#loop) nor the deprecated + * [`Factory` class](#factory) will try to use this event loop on PHP 7. + * + * This event loop is known to trigger a readable listener only if + * the stream *becomes* readable (edge-triggered) and may not trigger if the + * stream has already been readable from the beginning. + * This also implies that a stream may not be recognized as readable when data + * is still left in PHP's internal stream buffers. + * As such, it's recommended to use `stream_set_read_buffer($stream, 0);` + * to disable PHP's internal read buffer in this case. + * See also [`addReadStream()`](#addreadstream) for more details. + * + * @link https://pecl.php.net/package/libevent + * @deprecated 1.2.0, use [`ExtEventLoop`](#exteventloop) instead. + */ +final class ExtLibeventLoop implements LoopInterface +{ + /** @internal */ + const MICROSECONDS_PER_SECOND = 1000000; + + private $eventBase; + private $futureTickQueue; + private $timerCallback; + private $timerEvents; + private $streamCallback; + private $readEvents = array(); + private $writeEvents = array(); + private $readListeners = array(); + private $writeListeners = array(); + private $running; + private $signals; + private $signalEvents = array(); + + public function __construct() + { + if (!\function_exists('event_base_new')) { + throw new BadMethodCallException('Cannot create ExtLibeventLoop, ext-libevent extension missing'); + } + + $this->eventBase = \event_base_new(); + $this->futureTickQueue = new FutureTickQueue(); + $this->timerEvents = new SplObjectStorage(); + $this->signals = new SignalsHandler(); + + $this->createTimerCallback(); + $this->createStreamCallback(); + } + + public function addReadStream($stream, $listener) + { + $key = (int) $stream; + if (isset($this->readListeners[$key])) { + return; + } + + $event = \event_new(); + \event_set($event, $stream, \EV_PERSIST | \EV_READ, $this->streamCallback); + \event_base_set($event, $this->eventBase); + \event_add($event); + + $this->readEvents[$key] = $event; + $this->readListeners[$key] = $listener; + } + + public function addWriteStream($stream, $listener) + { + $key = (int) $stream; + if (isset($this->writeListeners[$key])) { + return; + } + + $event = \event_new(); + \event_set($event, $stream, \EV_PERSIST | \EV_WRITE, $this->streamCallback); + \event_base_set($event, $this->eventBase); + \event_add($event); + + $this->writeEvents[$key] = $event; + $this->writeListeners[$key] = $listener; + } + + public function removeReadStream($stream) + { + $key = (int) $stream; + + if (isset($this->readListeners[$key])) { + $event = $this->readEvents[$key]; + \event_del($event); + \event_free($event); + + unset( + $this->readEvents[$key], + $this->readListeners[$key] + ); + } + } + + public function removeWriteStream($stream) + { + $key = (int) $stream; + + if (isset($this->writeListeners[$key])) { + $event = $this->writeEvents[$key]; + \event_del($event); + \event_free($event); + + unset( + $this->writeEvents[$key], + $this->writeListeners[$key] + ); + } + } + + public function addTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, false); + + $this->scheduleTimer($timer); + + return $timer; + } + + public function addPeriodicTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, true); + + $this->scheduleTimer($timer); + + return $timer; + } + + public function cancelTimer(TimerInterface $timer) + { + if ($this->timerEvents->contains($timer)) { + $event = $this->timerEvents[$timer]; + \event_del($event); + \event_free($event); + + $this->timerEvents->detach($timer); + } + } + + public function futureTick($listener) + { + $this->futureTickQueue->add($listener); + } + + public function addSignal($signal, $listener) + { + $this->signals->add($signal, $listener); + + if (!isset($this->signalEvents[$signal])) { + $this->signalEvents[$signal] = \event_new(); + \event_set($this->signalEvents[$signal], $signal, \EV_PERSIST | \EV_SIGNAL, array($this->signals, 'call')); + \event_base_set($this->signalEvents[$signal], $this->eventBase); + \event_add($this->signalEvents[$signal]); + } + } + + public function removeSignal($signal, $listener) + { + $this->signals->remove($signal, $listener); + + if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) { + \event_del($this->signalEvents[$signal]); + \event_free($this->signalEvents[$signal]); + unset($this->signalEvents[$signal]); + } + } + + public function run() + { + $this->running = true; + + while ($this->running) { + $this->futureTickQueue->tick(); + + $flags = \EVLOOP_ONCE; + if (!$this->running || !$this->futureTickQueue->isEmpty()) { + $flags |= \EVLOOP_NONBLOCK; + } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) { + break; + } + + \event_base_loop($this->eventBase, $flags); + } + } + + public function stop() + { + $this->running = false; + } + + /** + * Schedule a timer for execution. + * + * @param TimerInterface $timer + */ + private function scheduleTimer(TimerInterface $timer) + { + $this->timerEvents[$timer] = $event = \event_timer_new(); + + \event_timer_set($event, $this->timerCallback, $timer); + \event_base_set($event, $this->eventBase); + \event_add($event, $timer->getInterval() * self::MICROSECONDS_PER_SECOND); + } + + /** + * Create a callback used as the target of timer events. + * + * A reference is kept to the callback for the lifetime of the loop + * to prevent "Cannot destroy active lambda function" fatal error from + * the event extension. + */ + private function createTimerCallback() + { + $that = $this; + $timers = $this->timerEvents; + $this->timerCallback = function ($_, $__, $timer) use ($timers, $that) { + \call_user_func($timer->getCallback(), $timer); + + // Timer already cancelled ... + if (!$timers->contains($timer)) { + return; + } + + // Reschedule periodic timers ... + if ($timer->isPeriodic()) { + \event_add( + $timers[$timer], + $timer->getInterval() * ExtLibeventLoop::MICROSECONDS_PER_SECOND + ); + + // Clean-up one shot timers ... + } else { + $that->cancelTimer($timer); + } + }; + } + + /** + * Create a callback used as the target of stream events. + * + * A reference is kept to the callback for the lifetime of the loop + * to prevent "Cannot destroy active lambda function" fatal error from + * the event extension. + */ + private function createStreamCallback() + { + $read =& $this->readListeners; + $write =& $this->writeListeners; + $this->streamCallback = function ($stream, $flags) use (&$read, &$write) { + $key = (int) $stream; + + if (\EV_READ === (\EV_READ & $flags) && isset($read[$key])) { + \call_user_func($read[$key], $stream); + } + + if (\EV_WRITE === (\EV_WRITE & $flags) && isset($write[$key])) { + \call_user_func($write[$key], $stream); + } + }; + } +} diff --git a/vendor/react/event-loop/src/ExtUvLoop.php b/vendor/react/event-loop/src/ExtUvLoop.php new file mode 100644 index 0000000..631a459 --- /dev/null +++ b/vendor/react/event-loop/src/ExtUvLoop.php @@ -0,0 +1,342 @@ +<?php + +namespace React\EventLoop; + +use React\EventLoop\Tick\FutureTickQueue; +use React\EventLoop\Timer\Timer; +use SplObjectStorage; + +/** + * An `ext-uv` based event loop. + * + * This loop uses the [`uv` PECL extension](https://pecl.php.net/package/uv), + * that provides an interface to `libuv` library. + * `libuv` itself supports a number of system-specific backends (epoll, kqueue). + * + * This loop is known to work with PHP 7.x. + * + * @see https://github.com/bwoebi/php-uv + */ +final class ExtUvLoop implements LoopInterface +{ + private $uv; + private $futureTickQueue; + private $timers; + private $streamEvents = array(); + private $readStreams = array(); + private $writeStreams = array(); + private $running; + private $signals; + private $signalEvents = array(); + private $streamListener; + + public function __construct() + { + if (!\function_exists('uv_loop_new')) { + throw new \BadMethodCallException('Cannot create LibUvLoop, ext-uv extension missing'); + } + + $this->uv = \uv_loop_new(); + $this->futureTickQueue = new FutureTickQueue(); + $this->timers = new SplObjectStorage(); + $this->streamListener = $this->createStreamListener(); + $this->signals = new SignalsHandler(); + } + + /** + * Returns the underlying ext-uv event loop. (Internal ReactPHP use only.) + * + * @internal + * + * @return resource + */ + public function getUvLoop() + { + return $this->uv; + } + + /** + * {@inheritdoc} + */ + public function addReadStream($stream, $listener) + { + if (isset($this->readStreams[(int) $stream])) { + return; + } + + $this->readStreams[(int) $stream] = $listener; + $this->addStream($stream); + } + + /** + * {@inheritdoc} + */ + public function addWriteStream($stream, $listener) + { + if (isset($this->writeStreams[(int) $stream])) { + return; + } + + $this->writeStreams[(int) $stream] = $listener; + $this->addStream($stream); + } + + /** + * {@inheritdoc} + */ + public function removeReadStream($stream) + { + if (!isset($this->streamEvents[(int) $stream])) { + return; + } + + unset($this->readStreams[(int) $stream]); + $this->removeStream($stream); + } + + /** + * {@inheritdoc} + */ + public function removeWriteStream($stream) + { + if (!isset($this->streamEvents[(int) $stream])) { + return; + } + + unset($this->writeStreams[(int) $stream]); + $this->removeStream($stream); + } + + /** + * {@inheritdoc} + */ + public function addTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, false); + + $that = $this; + $timers = $this->timers; + $callback = function () use ($timer, $timers, $that) { + \call_user_func($timer->getCallback(), $timer); + + if ($timers->contains($timer)) { + $that->cancelTimer($timer); + } + }; + + $event = \uv_timer_init($this->uv); + $this->timers->attach($timer, $event); + \uv_timer_start( + $event, + $this->convertFloatSecondsToMilliseconds($interval), + 0, + $callback + ); + + return $timer; + } + + /** + * {@inheritdoc} + */ + public function addPeriodicTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, true); + + $callback = function () use ($timer) { + \call_user_func($timer->getCallback(), $timer); + }; + + $interval = $this->convertFloatSecondsToMilliseconds($interval); + $event = \uv_timer_init($this->uv); + $this->timers->attach($timer, $event); + \uv_timer_start( + $event, + $interval, + (int) $interval === 0 ? 1 : $interval, + $callback + ); + + return $timer; + } + + /** + * {@inheritdoc} + */ + public function cancelTimer(TimerInterface $timer) + { + if (isset($this->timers[$timer])) { + @\uv_timer_stop($this->timers[$timer]); + $this->timers->detach($timer); + } + } + + /** + * {@inheritdoc} + */ + 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] = \uv_signal_init($this->uv); + \uv_signal_start($this->signalEvents[$signal], function () use ($signals, $signal) { + $signals->call($signal); + }, $signal); + } + } + + public function removeSignal($signal, $listener) + { + $this->signals->remove($signal, $listener); + + if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) { + \uv_signal_stop($this->signalEvents[$signal]); + unset($this->signalEvents[$signal]); + } + } + + /** + * {@inheritdoc} + */ + public function run() + { + $this->running = true; + + while ($this->running) { + $this->futureTickQueue->tick(); + + $hasPendingCallbacks = !$this->futureTickQueue->isEmpty(); + $wasJustStopped = !$this->running; + $nothingLeftToDo = !$this->readStreams + && !$this->writeStreams + && !$this->timers->count() + && $this->signals->isEmpty(); + + // Use UV::RUN_ONCE when there are only I/O events active in the loop and block until one of those triggers, + // otherwise use UV::RUN_NOWAIT. + // @link http://docs.libuv.org/en/v1.x/loop.html#c.uv_run + $flags = \UV::RUN_ONCE; + if ($wasJustStopped || $hasPendingCallbacks) { + $flags = \UV::RUN_NOWAIT; + } elseif ($nothingLeftToDo) { + break; + } + + \uv_run($this->uv, $flags); + } + } + + /** + * {@inheritdoc} + */ + public function stop() + { + $this->running = false; + } + + private function addStream($stream) + { + if (!isset($this->streamEvents[(int) $stream])) { + $this->streamEvents[(int)$stream] = \uv_poll_init_socket($this->uv, $stream); + } + + if ($this->streamEvents[(int) $stream] !== false) { + $this->pollStream($stream); + } + } + + private function removeStream($stream) + { + if (!isset($this->streamEvents[(int) $stream])) { + return; + } + + if (!isset($this->readStreams[(int) $stream]) + && !isset($this->writeStreams[(int) $stream])) { + \uv_poll_stop($this->streamEvents[(int) $stream]); + \uv_close($this->streamEvents[(int) $stream]); + unset($this->streamEvents[(int) $stream]); + return; + } + + $this->pollStream($stream); + } + + private function pollStream($stream) + { + if (!isset($this->streamEvents[(int) $stream])) { + return; + } + + $flags = 0; + if (isset($this->readStreams[(int) $stream])) { + $flags |= \UV::READABLE; + } + + if (isset($this->writeStreams[(int) $stream])) { + $flags |= \UV::WRITABLE; + } + + \uv_poll_start($this->streamEvents[(int) $stream], $flags, $this->streamListener); + } + + /** + * Create a stream listener + * + * @return callable Returns a callback + */ + private function createStreamListener() + { + $callback = function ($event, $status, $events, $stream) { + // libuv automatically stops polling on error, re-enable polling to match other loop implementations + if ($status !== 0) { + $this->pollStream($stream); + + // libuv may report no events on error, but this should still invoke stream listeners to report closed connections + // re-enable both readable and writable, correct listeners will be checked below anyway + if ($events === 0) { + $events = \UV::READABLE | \UV::WRITABLE; + } + } + + if (isset($this->readStreams[(int) $stream]) && ($events & \UV::READABLE)) { + \call_user_func($this->readStreams[(int) $stream], $stream); + } + + if (isset($this->writeStreams[(int) $stream]) && ($events & \UV::WRITABLE)) { + \call_user_func($this->writeStreams[(int) $stream], $stream); + } + }; + + return $callback; + } + + /** + * @param float $interval + * @return int + */ + private function convertFloatSecondsToMilliseconds($interval) + { + if ($interval < 0) { + return 0; + } + + $maxValue = (int) (\PHP_INT_MAX / 1000); + $intInterval = (int) $interval; + + if (($intInterval <= 0 && $interval > 1) || $intInterval >= $maxValue) { + throw new \InvalidArgumentException( + "Interval overflow, value must be lower than '{$maxValue}', but '{$interval}' passed." + ); + } + + return (int) \floor($interval * 1000); + } +} diff --git a/vendor/react/event-loop/src/Factory.php b/vendor/react/event-loop/src/Factory.php new file mode 100644 index 0000000..30bbfd7 --- /dev/null +++ b/vendor/react/event-loop/src/Factory.php @@ -0,0 +1,75 @@ +<?php + +namespace React\EventLoop; + +/** + * [Deprecated] The `Factory` class exists as a convenient way to pick the best available event loop implementation. + * + * @deprecated 1.2.0 See Loop instead. + * @see Loop + */ +final class Factory +{ + /** + * [Deprecated] Creates a new event loop instance + * + * ```php + * // deprecated + * $loop = React\EventLoop\Factory::create(); + * + * // new + * $loop = React\EventLoop\Loop::get(); + * ``` + * + * This method always returns an instance implementing `LoopInterface`, + * the actual event loop implementation is an implementation detail. + * + * This method should usually only be called once at the beginning of the program. + * + * @deprecated 1.2.0 See Loop::get() instead. + * @see Loop::get() + * + * @return LoopInterface + */ + public static function create() + { + $loop = self::construct(); + + Loop::set($loop); + + return $loop; + } + + /** + * @internal + * @return LoopInterface + */ + private static function construct() + { + // @codeCoverageIgnoreStart + if (\function_exists('uv_loop_new')) { + // only use ext-uv on PHP 7 + return new ExtUvLoop(); + } + + if (\class_exists('libev\EventLoop', false)) { + return new ExtLibevLoop(); + } + + if (\class_exists('EvLoop', false)) { + return new ExtEvLoop(); + } + + if (\class_exists('EventBase', false)) { + return new ExtEventLoop(); + } + + if (\function_exists('event_base_new') && \PHP_MAJOR_VERSION === 5) { + // only use ext-libevent on PHP 5 for now + return new ExtLibeventLoop(); + } + + return new StreamSelectLoop(); + // @codeCoverageIgnoreEnd + } +} diff --git a/vendor/react/event-loop/src/Loop.php b/vendor/react/event-loop/src/Loop.php new file mode 100644 index 0000000..fd5d81c --- /dev/null +++ b/vendor/react/event-loop/src/Loop.php @@ -0,0 +1,225 @@ +<?php + +namespace React\EventLoop; + +/** + * The `Loop` class exists as a convenient way to get the currently relevant loop + */ +final class Loop +{ + /** + * @var LoopInterface + */ + private static $instance; + + /** @var bool */ + private static $stopped = false; + + /** + * Returns the event loop. + * When no loop is set, it will call the factory to create one. + * + * This method always returns an instance implementing `LoopInterface`, + * the actual event loop implementation is an implementation detail. + * + * This method is the preferred way to get the event loop and using + * Factory::create has been deprecated. + * + * @return LoopInterface + */ + public static function get() + { + if (self::$instance instanceof LoopInterface) { + return self::$instance; + } + + self::$instance = $loop = Factory::create(); + + // Automatically run loop at end of program, unless already started or stopped explicitly. + // This is tested using child processes, so coverage is actually 100%, see BinTest. + // @codeCoverageIgnoreStart + $hasRun = false; + $loop->futureTick(function () use (&$hasRun) { + $hasRun = true; + }); + + $stopped =& self::$stopped; + register_shutdown_function(function () use ($loop, &$hasRun, &$stopped) { + // Don't run if we're coming from a fatal error (uncaught exception). + $error = error_get_last(); + if ((isset($error['type']) ? $error['type'] : 0) & (E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR | E_RECOVERABLE_ERROR)) { + return; + } + + if (!$hasRun && !$stopped) { + $loop->run(); + } + }); + // @codeCoverageIgnoreEnd + + return self::$instance; + } + + /** + * Internal undocumented method, behavior might change or throw in the + * future. Use with caution and at your own risk. + * + * @internal + * @return void + */ + public static function set(LoopInterface $loop) + { + self::$instance = $loop; + } + + /** + * [Advanced] Register a listener to be notified when a stream is ready to read. + * + * @param resource $stream + * @param callable $listener + * @return void + * @throws \Exception + * @see LoopInterface::addReadStream() + */ + public static function addReadStream($stream, $listener) + { + self::get()->addReadStream($stream, $listener); + } + + /** + * [Advanced] Register a listener to be notified when a stream is ready to write. + * + * @param resource $stream + * @param callable $listener + * @return void + * @throws \Exception + * @see LoopInterface::addWriteStream() + */ + public static function addWriteStream($stream, $listener) + { + self::get()->addWriteStream($stream, $listener); + } + + /** + * Remove the read event listener for the given stream. + * + * @param resource $stream + * @return void + * @see LoopInterface::removeReadStream() + */ + public static function removeReadStream($stream) + { + self::get()->removeReadStream($stream); + } + + /** + * Remove the write event listener for the given stream. + * + * @param resource $stream + * @return void + * @see LoopInterface::removeWriteStream() + */ + public static function removeWriteStream($stream) + { + self::get()->removeWriteStream($stream); + } + + /** + * Enqueue a callback to be invoked once after the given interval. + * + * @param float $interval + * @param callable $callback + * @return TimerInterface + * @see LoopInterface::addTimer() + */ + public static function addTimer($interval, $callback) + { + return self::get()->addTimer($interval, $callback); + } + + /** + * Enqueue a callback to be invoked repeatedly after the given interval. + * + * @param float $interval + * @param callable $callback + * @return TimerInterface + * @see LoopInterface::addPeriodicTimer() + */ + public static function addPeriodicTimer($interval, $callback) + { + return self::get()->addPeriodicTimer($interval, $callback); + } + + /** + * Cancel a pending timer. + * + * @param TimerInterface $timer + * @return void + * @see LoopInterface::cancelTimer() + */ + public static function cancelTimer(TimerInterface $timer) + { + return self::get()->cancelTimer($timer); + } + + /** + * Schedule a callback to be invoked on a future tick of the event loop. + * + * @param callable $listener + * @return void + * @see LoopInterface::futureTick() + */ + public static function futureTick($listener) + { + self::get()->futureTick($listener); + } + + /** + * Register a listener to be notified when a signal has been caught by this process. + * + * @param int $signal + * @param callable $listener + * @return void + * @see LoopInterface::addSignal() + */ + public static function addSignal($signal, $listener) + { + self::get()->addSignal($signal, $listener); + } + + /** + * Removes a previously added signal listener. + * + * @param int $signal + * @param callable $listener + * @return void + * @see LoopInterface::removeSignal() + */ + public static function removeSignal($signal, $listener) + { + self::get()->removeSignal($signal, $listener); + } + + /** + * Run the event loop until there are no more tasks to perform. + * + * @return void + * @see LoopInterface::run() + */ + public static function run() + { + self::get()->run(); + } + + /** + * Instruct a running event loop to stop. + * + * @return void + * @see LoopInterface::stop() + */ + public static function stop() + { + self::$stopped = true; + self::get()->stop(); + } +} diff --git a/vendor/react/event-loop/src/LoopInterface.php b/vendor/react/event-loop/src/LoopInterface.php new file mode 100644 index 0000000..9266f71 --- /dev/null +++ b/vendor/react/event-loop/src/LoopInterface.php @@ -0,0 +1,472 @@ +<?php + +namespace React\EventLoop; + +interface LoopInterface +{ + /** + * [Advanced] Register a listener to be notified when a stream is ready to read. + * + * Note that this low-level API is considered advanced usage. + * Most use cases should probably use the higher-level + * [readable Stream API](https://github.com/reactphp/stream#readablestreaminterface) + * instead. + * + * The first parameter MUST be a valid stream resource that supports + * checking whether it is ready to read by this loop implementation. + * A single stream resource MUST NOT be added more than once. + * Instead, either call [`removeReadStream()`](#removereadstream) first or + * react to this event with a single listener and then dispatch from this + * listener. This method MAY throw an `Exception` if the given resource type + * is not supported by this loop implementation. + * + * The second parameter MUST be a listener callback function that accepts + * the stream resource as its only parameter. + * If you don't use the stream resource inside your listener callback function + * you MAY use a function which has no parameters at all. + * + * The listener callback function MUST NOT throw an `Exception`. + * The return value of the listener callback function will be ignored and has + * no effect, so for performance reasons you're recommended to not return + * any excessive data structures. + * + * If you want to access any variables within your callback function, you + * can bind arbitrary data to a callback closure like this: + * + * ```php + * $loop->addReadStream($stream, function ($stream) use ($name) { + * echo $name . ' said: ' . fread($stream); + * }); + * ``` + * + * See also [example #11](examples). + * + * You can invoke [`removeReadStream()`](#removereadstream) to remove the + * read event listener for this stream. + * + * The execution order of listeners when multiple streams become ready at + * the same time is not guaranteed. + * + * @param resource $stream The PHP stream resource to check. + * @param callable $listener Invoked when the stream is ready. + * @throws \Exception if the given resource type is not supported by this loop implementation + * @see self::removeReadStream() + */ + public function addReadStream($stream, $listener); + + /** + * [Advanced] Register a listener to be notified when a stream is ready to write. + * + * Note that this low-level API is considered advanced usage. + * Most use cases should probably use the higher-level + * [writable Stream API](https://github.com/reactphp/stream#writablestreaminterface) + * instead. + * + * The first parameter MUST be a valid stream resource that supports + * checking whether it is ready to write by this loop implementation. + * A single stream resource MUST NOT be added more than once. + * Instead, either call [`removeWriteStream()`](#removewritestream) first or + * react to this event with a single listener and then dispatch from this + * listener. This method MAY throw an `Exception` if the given resource type + * is not supported by this loop implementation. + * + * The second parameter MUST be a listener callback function that accepts + * the stream resource as its only parameter. + * If you don't use the stream resource inside your listener callback function + * you MAY use a function which has no parameters at all. + * + * The listener callback function MUST NOT throw an `Exception`. + * The return value of the listener callback function will be ignored and has + * no effect, so for performance reasons you're recommended to not return + * any excessive data structures. + * + * If you want to access any variables within your callback function, you + * can bind arbitrary data to a callback closure like this: + * + * ```php + * $loop->addWriteStream($stream, function ($stream) use ($name) { + * fwrite($stream, 'Hello ' . $name); + * }); + * ``` + * + * See also [example #12](examples). + * + * You can invoke [`removeWriteStream()`](#removewritestream) to remove the + * write event listener for this stream. + * + * The execution order of listeners when multiple streams become ready at + * the same time is not guaranteed. + * + * Some event loop implementations are known to only trigger the listener if + * the stream *becomes* readable (edge-triggered) and may not trigger if the + * stream has already been readable from the beginning. + * This also implies that a stream may not be recognized as readable when data + * is still left in PHP's internal stream buffers. + * As such, it's recommended to use `stream_set_read_buffer($stream, 0);` + * to disable PHP's internal read buffer in this case. + * + * @param resource $stream The PHP stream resource to check. + * @param callable $listener Invoked when the stream is ready. + * @throws \Exception if the given resource type is not supported by this loop implementation + * @see self::removeWriteStream() + */ + public function addWriteStream($stream, $listener); + + /** + * Remove the read event listener for the given stream. + * + * Removing a stream from the loop that has already been removed or trying + * to remove a stream that was never added or is invalid has no effect. + * + * @param resource $stream The PHP stream resource. + */ + public function removeReadStream($stream); + + /** + * Remove the write event listener for the given stream. + * + * Removing a stream from the loop that has already been removed or trying + * to remove a stream that was never added or is invalid has no effect. + * + * @param resource $stream The PHP stream resource. + */ + public function removeWriteStream($stream); + + /** + * Enqueue a callback to be invoked once after the given interval. + * + * The second parameter MUST be a timer callback function that accepts + * the timer instance as its only parameter. + * If you don't use the timer instance inside your timer callback function + * you MAY use a function which has no parameters at all. + * + * The timer callback function MUST NOT throw an `Exception`. + * The return value of the timer callback function will be ignored and has + * no effect, so for performance reasons you're recommended to not return + * any excessive data structures. + * + * This method returns a timer instance. The same timer instance will also be + * passed into the timer callback function as described above. + * You can invoke [`cancelTimer`](#canceltimer) to cancel a pending timer. + * Unlike [`addPeriodicTimer()`](#addperiodictimer), this method will ensure + * the callback will be invoked only once after the given interval. + * + * ```php + * $loop->addTimer(0.8, function () { + * echo 'world!' . PHP_EOL; + * }); + * + * $loop->addTimer(0.3, function () { + * echo 'hello '; + * }); + * ``` + * + * See also [example #1](examples). + * + * If you want to access any variables within your callback function, you + * can bind arbitrary data to a callback closure like this: + * + * ```php + * function hello($name, LoopInterface $loop) + * { + * $loop->addTimer(1.0, function () use ($name) { + * echo "hello $name\n"; + * }); + * } + * + * hello('Tester', $loop); + * ``` + * + * This interface does not enforce any particular timer resolution, so + * special care may have to be taken if you rely on very high precision with + * millisecond accuracy or below. Event loop implementations SHOULD work on + * a best effort basis and SHOULD provide at least millisecond accuracy + * unless otherwise noted. Many existing event loop implementations are + * known to provide microsecond accuracy, but it's generally not recommended + * to rely on this high precision. + * + * Similarly, the execution order of timers scheduled to execute at the + * same time (within its possible accuracy) is not guaranteed. + * + * This interface suggests that event loop implementations SHOULD use a + * monotonic time source if available. Given that a monotonic time source is + * only available as of PHP 7.3 by default, event loop implementations MAY + * fall back to using wall-clock time. + * While this does not affect many common use cases, this is an important + * distinction for programs that rely on a high time precision or on systems + * that are subject to discontinuous time adjustments (time jumps). + * This means that if you schedule a timer to trigger in 30s and then adjust + * your system time forward by 20s, the timer SHOULD still trigger in 30s. + * See also [event loop implementations](#loop-implementations) for more details. + * + * @param int|float $interval The number of seconds to wait before execution. + * @param callable $callback The callback to invoke. + * + * @return TimerInterface + */ + public function addTimer($interval, $callback); + + /** + * Enqueue a callback to be invoked repeatedly after the given interval. + * + * The second parameter MUST be a timer callback function that accepts + * the timer instance as its only parameter. + * If you don't use the timer instance inside your timer callback function + * you MAY use a function which has no parameters at all. + * + * The timer callback function MUST NOT throw an `Exception`. + * The return value of the timer callback function will be ignored and has + * no effect, so for performance reasons you're recommended to not return + * any excessive data structures. + * + * This method returns a timer instance. The same timer instance will also be + * passed into the timer callback function as described above. + * Unlike [`addTimer()`](#addtimer), this method will ensure the callback + * will be invoked infinitely after the given interval or until you invoke + * [`cancelTimer`](#canceltimer). + * + * ```php + * $timer = $loop->addPeriodicTimer(0.1, function () { + * echo 'tick!' . PHP_EOL; + * }); + * + * $loop->addTimer(1.0, function () use ($loop, $timer) { + * $loop->cancelTimer($timer); + * echo 'Done' . PHP_EOL; + * }); + * ``` + * + * See also [example #2](examples). + * + * If you want to limit the number of executions, you can bind + * arbitrary data to a callback closure like this: + * + * ```php + * function hello($name, LoopInterface $loop) + * { + * $n = 3; + * $loop->addPeriodicTimer(1.0, function ($timer) use ($name, $loop, &$n) { + * if ($n > 0) { + * --$n; + * echo "hello $name\n"; + * } else { + * $loop->cancelTimer($timer); + * } + * }); + * } + * + * hello('Tester', $loop); + * ``` + * + * This interface does not enforce any particular timer resolution, so + * special care may have to be taken if you rely on very high precision with + * millisecond accuracy or below. Event loop implementations SHOULD work on + * a best effort basis and SHOULD provide at least millisecond accuracy + * unless otherwise noted. Many existing event loop implementations are + * known to provide microsecond accuracy, but it's generally not recommended + * to rely on this high precision. + * + * Similarly, the execution order of timers scheduled to execute at the + * same time (within its possible accuracy) is not guaranteed. + * + * This interface suggests that event loop implementations SHOULD use a + * monotonic time source if available. Given that a monotonic time source is + * only available as of PHP 7.3 by default, event loop implementations MAY + * fall back to using wall-clock time. + * While this does not affect many common use cases, this is an important + * distinction for programs that rely on a high time precision or on systems + * that are subject to discontinuous time adjustments (time jumps). + * This means that if you schedule a timer to trigger in 30s and then adjust + * your system time forward by 20s, the timer SHOULD still trigger in 30s. + * See also [event loop implementations](#loop-implementations) for more details. + * + * Additionally, periodic timers may be subject to timer drift due to + * re-scheduling after each invocation. As such, it's generally not + * recommended to rely on this for high precision intervals with millisecond + * accuracy or below. + * + * @param int|float $interval The number of seconds to wait before execution. + * @param callable $callback The callback to invoke. + * + * @return TimerInterface + */ + public function addPeriodicTimer($interval, $callback); + + /** + * Cancel a pending timer. + * + * See also [`addPeriodicTimer()`](#addperiodictimer) and [example #2](examples). + * + * Calling this method on a timer instance that has not been added to this + * loop instance or on a timer that has already been cancelled has no effect. + * + * @param TimerInterface $timer The timer to cancel. + * + * @return void + */ + public function cancelTimer(TimerInterface $timer); + + /** + * Schedule a callback to be invoked on a future tick of the event loop. + * + * This works very much similar to timers with an interval of zero seconds, + * but does not require the overhead of scheduling a timer queue. + * + * The tick callback function MUST be able to accept zero parameters. + * + * The tick callback function MUST NOT throw an `Exception`. + * The return value of the tick callback function will be ignored and has + * no effect, so for performance reasons you're recommended to not return + * any excessive data structures. + * + * If you want to access any variables within your callback function, you + * can bind arbitrary data to a callback closure like this: + * + * ```php + * function hello($name, LoopInterface $loop) + * { + * $loop->futureTick(function () use ($name) { + * echo "hello $name\n"; + * }); + * } + * + * hello('Tester', $loop); + * ``` + * + * Unlike timers, tick callbacks are guaranteed to be executed in the order + * they are enqueued. + * Also, once a callback is enqueued, there's no way to cancel this operation. + * + * This is often used to break down bigger tasks into smaller steps (a form + * of cooperative multitasking). + * + * ```php + * $loop->futureTick(function () { + * echo 'b'; + * }); + * $loop->futureTick(function () { + * echo 'c'; + * }); + * echo 'a'; + * ``` + * + * See also [example #3](examples). + * + * @param callable $listener The callback to invoke. + * + * @return void + */ + public function futureTick($listener); + + /** + * Register a listener to be notified when a signal has been caught by this process. + * + * This is useful to catch user interrupt signals or shutdown signals from + * tools like `supervisor` or `systemd`. + * + * The second parameter MUST be a listener callback function that accepts + * the signal as its only parameter. + * If you don't use the signal inside your listener callback function + * you MAY use a function which has no parameters at all. + * + * The listener callback function MUST NOT throw an `Exception`. + * The return value of the listener callback function will be ignored and has + * no effect, so for performance reasons you're recommended to not return + * any excessive data structures. + * + * ```php + * $loop->addSignal(SIGINT, function (int $signal) { + * echo 'Caught user interrupt signal' . PHP_EOL; + * }); + * ``` + * + * See also [example #4](examples). + * + * Signaling is only available on Unix-like platforms, Windows isn't + * supported due to operating system limitations. + * This method may throw a `BadMethodCallException` if signals aren't + * supported on this platform, for example when required extensions are + * missing. + * + * **Note: A listener can only be added once to the same signal, any + * attempts to add it more than once will be ignored.** + * + * @param int $signal + * @param callable $listener + * + * @throws \BadMethodCallException when signals aren't supported on this + * platform, for example when required extensions are missing. + * + * @return void + */ + public function addSignal($signal, $listener); + + /** + * Removes a previously added signal listener. + * + * ```php + * $loop->removeSignal(SIGINT, $listener); + * ``` + * + * Any attempts to remove listeners that aren't registered will be ignored. + * + * @param int $signal + * @param callable $listener + * + * @return void + */ + public function removeSignal($signal, $listener); + + /** + * Run the event loop until there are no more tasks to perform. + * + * For many applications, this method is the only directly visible + * invocation on the event loop. + * As a rule of thumb, it is usually recommended to attach everything to the + * same loop instance and then run the loop once at the bottom end of the + * application. + * + * ```php + * $loop->run(); + * ``` + * + * This method will keep the loop running until there are no more tasks + * to perform. In other words: This method will block until the last + * timer, stream and/or signal has been removed. + * + * Likewise, it is imperative to ensure the application actually invokes + * this method once. Adding listeners to the loop and missing to actually + * run it will result in the application exiting without actually waiting + * for any of the attached listeners. + * + * This method MUST NOT be called while the loop is already running. + * This method MAY be called more than once after it has explicitly been + * [`stop()`ped](#stop) or after it automatically stopped because it + * previously did no longer have anything to do. + * + * @return void + */ + public function run(); + + /** + * Instruct a running event loop to stop. + * + * This method is considered advanced usage and should be used with care. + * As a rule of thumb, it is usually recommended to let the loop stop + * only automatically when it no longer has anything to do. + * + * This method can be used to explicitly instruct the event loop to stop: + * + * ```php + * $loop->addTimer(3.0, function () use ($loop) { + * $loop->stop(); + * }); + * ``` + * + * Calling this method on a loop instance that is not currently running or + * on a loop instance that has already been stopped has no effect. + * + * @return void + */ + public function stop(); +} diff --git a/vendor/react/event-loop/src/SignalsHandler.php b/vendor/react/event-loop/src/SignalsHandler.php new file mode 100644 index 0000000..10d125d --- /dev/null +++ b/vendor/react/event-loop/src/SignalsHandler.php @@ -0,0 +1,63 @@ +<?php + +namespace React\EventLoop; + +/** + * @internal + */ +final class SignalsHandler +{ + private $signals = array(); + + public function add($signal, $listener) + { + if (!isset($this->signals[$signal])) { + $this->signals[$signal] = array(); + } + + if (\in_array($listener, $this->signals[$signal])) { + return; + } + + $this->signals[$signal][] = $listener; + } + + public function remove($signal, $listener) + { + if (!isset($this->signals[$signal])) { + return; + } + + $index = \array_search($listener, $this->signals[$signal], true); + unset($this->signals[$signal][$index]); + + if (isset($this->signals[$signal]) && \count($this->signals[$signal]) === 0) { + unset($this->signals[$signal]); + } + } + + public function call($signal) + { + if (!isset($this->signals[$signal])) { + return; + } + + foreach ($this->signals[$signal] as $listener) { + \call_user_func($listener, $signal); + } + } + + public function count($signal) + { + if (!isset($this->signals[$signal])) { + return 0; + } + + return \count($this->signals[$signal]); + } + + public function isEmpty() + { + return !$this->signals; + } +} diff --git a/vendor/react/event-loop/src/StreamSelectLoop.php b/vendor/react/event-loop/src/StreamSelectLoop.php new file mode 100644 index 0000000..71983da --- /dev/null +++ b/vendor/react/event-loop/src/StreamSelectLoop.php @@ -0,0 +1,329 @@ +<?php + +namespace React\EventLoop; + +use React\EventLoop\Tick\FutureTickQueue; +use React\EventLoop\Timer\Timer; +use React\EventLoop\Timer\Timers; + +/** + * A `stream_select()` based event loop. + * + * This uses the [`stream_select()`](https://www.php.net/manual/en/function.stream-select.php) + * function and is the only implementation that works out of the box with PHP. + * + * This event loop works out of the box on PHP 5.4 through PHP 8+ and HHVM. + * This means that no installation is required and this library works on all + * platforms and supported PHP versions. + * Accordingly, the [`Loop` class](#loop) and the deprecated [`Factory`](#factory) + * will use this event loop by default if you do not install any of the event loop + * extensions listed below. + * + * Under the hood, it does a simple `select` system call. + * This system call is limited to the maximum file descriptor number of + * `FD_SETSIZE` (platform dependent, commonly 1024) and scales with `O(m)` + * (`m` being the maximum file descriptor number passed). + * This means that you may run into issues when handling thousands of streams + * concurrently and you may want to look into using one of the alternative + * event loop implementations listed below in this case. + * If your use case is among the many common use cases that involve handling only + * dozens or a few hundred streams at once, then this event loop implementation + * performs really well. + * + * If you want to use signal handling (see also [`addSignal()`](#addsignal) below), + * this event loop implementation requires `ext-pcntl`. + * This extension is only available for Unix-like platforms and does not support + * Windows. + * It is commonly installed as part of many PHP distributions. + * If this extension is missing (or you're running on Windows), signal handling is + * not supported and throws a `BadMethodCallException` instead. + * + * This event loop is known to rely on wall-clock time to schedule future timers + * when using any version before PHP 7.3, because a monotonic time source is + * only available as of PHP 7.3 (`hrtime()`). + * While this does not affect many common use cases, this is an important + * distinction for programs that rely on a high time precision or on systems + * that are subject to discontinuous time adjustments (time jumps). + * This means that if you schedule a timer to trigger in 30s on PHP < 7.3 and + * then adjust your system time forward by 20s, the timer may trigger in 10s. + * See also [`addTimer()`](#addtimer) for more details. + * + * @link https://www.php.net/manual/en/function.stream-select.php + */ +final class StreamSelectLoop implements LoopInterface +{ + /** @internal */ + const MICROSECONDS_PER_SECOND = 1000000; + + private $futureTickQueue; + private $timers; + private $readStreams = array(); + private $readListeners = array(); + private $writeStreams = array(); + private $writeListeners = array(); + private $running; + private $pcntl = false; + private $pcntlPoll = false; + private $signals; + + public function __construct() + { + $this->futureTickQueue = new FutureTickQueue(); + $this->timers = new Timers(); + $this->pcntl = \function_exists('pcntl_signal') && \function_exists('pcntl_signal_dispatch'); + $this->pcntlPoll = $this->pcntl && !\function_exists('pcntl_async_signals'); + $this->signals = new SignalsHandler(); + + // prefer async signals if available (PHP 7.1+) or fall back to dispatching on each tick + if ($this->pcntl && !$this->pcntlPoll) { + \pcntl_async_signals(true); + } + } + + public function addReadStream($stream, $listener) + { + $key = (int) $stream; + + if (!isset($this->readStreams[$key])) { + $this->readStreams[$key] = $stream; + $this->readListeners[$key] = $listener; + } + } + + public function addWriteStream($stream, $listener) + { + $key = (int) $stream; + + if (!isset($this->writeStreams[$key])) { + $this->writeStreams[$key] = $stream; + $this->writeListeners[$key] = $listener; + } + } + + public function removeReadStream($stream) + { + $key = (int) $stream; + + unset( + $this->readStreams[$key], + $this->readListeners[$key] + ); + } + + public function removeWriteStream($stream) + { + $key = (int) $stream; + + unset( + $this->writeStreams[$key], + $this->writeListeners[$key] + ); + } + + public function addTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, false); + + $this->timers->add($timer); + + return $timer; + } + + public function addPeriodicTimer($interval, $callback) + { + $timer = new Timer($interval, $callback, true); + + $this->timers->add($timer); + + return $timer; + } + + public function cancelTimer(TimerInterface $timer) + { + $this->timers->cancel($timer); + } + + public function futureTick($listener) + { + $this->futureTickQueue->add($listener); + } + + public function addSignal($signal, $listener) + { + if ($this->pcntl === false) { + throw new \BadMethodCallException('Event loop feature "signals" isn\'t supported by the "StreamSelectLoop"'); + } + + $first = $this->signals->count($signal) === 0; + $this->signals->add($signal, $listener); + + if ($first) { + \pcntl_signal($signal, array($this->signals, 'call')); + } + } + + public function removeSignal($signal, $listener) + { + if (!$this->signals->count($signal)) { + return; + } + + $this->signals->remove($signal, $listener); + + if ($this->signals->count($signal) === 0) { + \pcntl_signal($signal, \SIG_DFL); + } + } + + public function run() + { + $this->running = true; + + while ($this->running) { + $this->futureTickQueue->tick(); + + $this->timers->tick(); + + // Future-tick queue has pending callbacks ... + if (!$this->running || !$this->futureTickQueue->isEmpty()) { + $timeout = 0; + + // There is a pending timer, only block until it is due ... + } elseif ($scheduledAt = $this->timers->getFirst()) { + $timeout = $scheduledAt - $this->timers->getTime(); + if ($timeout < 0) { + $timeout = 0; + } else { + // Convert float seconds to int microseconds. + // Ensure we do not exceed maximum integer size, which may + // cause the loop to tick once every ~35min on 32bit systems. + $timeout *= self::MICROSECONDS_PER_SECOND; + $timeout = $timeout > \PHP_INT_MAX ? \PHP_INT_MAX : (int)$timeout; + } + + // The only possible event is stream or signal activity, so wait forever ... + } elseif ($this->readStreams || $this->writeStreams || !$this->signals->isEmpty()) { + $timeout = null; + + // There's nothing left to do ... + } else { + break; + } + + $this->waitForStreamActivity($timeout); + } + } + + public function stop() + { + $this->running = false; + } + + /** + * Wait/check for stream activity, or until the next timer is due. + * + * @param integer|null $timeout Activity timeout in microseconds, or null to wait forever. + */ + private function waitForStreamActivity($timeout) + { + $read = $this->readStreams; + $write = $this->writeStreams; + + $available = $this->streamSelect($read, $write, $timeout); + if ($this->pcntlPoll) { + \pcntl_signal_dispatch(); + } + if (false === $available) { + // if a system call has been interrupted, + // we cannot rely on it's outcome + return; + } + + foreach ($read as $stream) { + $key = (int) $stream; + + if (isset($this->readListeners[$key])) { + \call_user_func($this->readListeners[$key], $stream); + } + } + + foreach ($write as $stream) { + $key = (int) $stream; + + if (isset($this->writeListeners[$key])) { + \call_user_func($this->writeListeners[$key], $stream); + } + } + } + + /** + * Emulate a stream_select() implementation that does not break when passed + * empty stream arrays. + * + * @param array $read An array of read streams to select upon. + * @param array $write An array of write streams to select upon. + * @param int|null $timeout Activity timeout in microseconds, or null to wait forever. + * + * @return int|false The total number of streams that are ready for read/write. + * Can return false if stream_select() is interrupted by a signal. + */ + private function streamSelect(array &$read, array &$write, $timeout) + { + if ($read || $write) { + // We do not usually use or expose the `exceptfds` parameter passed to the underlying `select`. + // However, Windows does not report failed connection attempts in `writefds` passed to `select` like most other platforms. + // Instead, it uses `writefds` only for successful connection attempts and `exceptfds` for failed connection attempts. + // We work around this by adding all sockets that look like a pending connection attempt to `exceptfds` automatically on Windows and merge it back later. + // This ensures the public API matches other loop implementations across all platforms (see also test suite or rather test matrix). + // Lacking better APIs, every write-only socket that has not yet read any data is assumed to be in a pending connection attempt state. + // @link https://docs.microsoft.com/de-de/windows/win32/api/winsock2/nf-winsock2-select + $except = null; + if (\DIRECTORY_SEPARATOR === '\\') { + $except = array(); + foreach ($write as $key => $socket) { + if (!isset($read[$key]) && @\ftell($socket) === 0) { + $except[$key] = $socket; + } + } + } + + /** @var ?callable $previous */ + $previous = \set_error_handler(function ($errno, $errstr) use (&$previous) { + // suppress warnings that occur when `stream_select()` is interrupted by a signal + $eintr = \defined('SOCKET_EINTR') ? \SOCKET_EINTR : 4; + if ($errno === \E_WARNING && \strpos($errstr, '[' . $eintr .']: ') !== false) { + return; + } + + // forward any other error to registered error handler or print warning + return ($previous !== null) ? \call_user_func_array($previous, \func_get_args()) : false; + }); + + try { + $ret = \stream_select($read, $write, $except, $timeout === null ? null : 0, $timeout); + \restore_error_handler(); + } catch (\Throwable $e) { // @codeCoverageIgnoreStart + \restore_error_handler(); + throw $e; + } catch (\Exception $e) { + \restore_error_handler(); + throw $e; + } // @codeCoverageIgnoreEnd + + if ($except) { + $write = \array_merge($write, $except); + } + return $ret; + } + + if ($timeout > 0) { + \usleep($timeout); + } elseif ($timeout === null) { + // wait forever (we only reach this if we're only awaiting signals) + // this may be interrupted and return earlier when a signal is received + \sleep(PHP_INT_MAX); + } + + return 0; + } +} diff --git a/vendor/react/event-loop/src/Tick/FutureTickQueue.php b/vendor/react/event-loop/src/Tick/FutureTickQueue.php new file mode 100644 index 0000000..efabcbc --- /dev/null +++ b/vendor/react/event-loop/src/Tick/FutureTickQueue.php @@ -0,0 +1,60 @@ +<?php + +namespace React\EventLoop\Tick; + +use SplQueue; + +/** + * A tick queue implementation that can hold multiple callback functions + * + * This class should only be used internally, see LoopInterface instead. + * + * @see LoopInterface + * @internal + */ +final class FutureTickQueue +{ + private $queue; + + public function __construct() + { + $this->queue = new SplQueue(); + } + + /** + * Add a callback to be invoked on a future tick of the event loop. + * + * Callbacks are guaranteed to be executed in the order they are enqueued. + * + * @param callable $listener The callback to invoke. + */ + public function add($listener) + { + $this->queue->enqueue($listener); + } + + /** + * Flush the callback queue. + */ + public function tick() + { + // Only invoke as many callbacks as were on the queue when tick() was called. + $count = $this->queue->count(); + + while ($count--) { + \call_user_func( + $this->queue->dequeue() + ); + } + } + + /** + * Check if the next tick queue is empty. + * + * @return boolean + */ + public function isEmpty() + { + return $this->queue->isEmpty(); + } +} diff --git a/vendor/react/event-loop/src/Timer/Timer.php b/vendor/react/event-loop/src/Timer/Timer.php new file mode 100644 index 0000000..da3602a --- /dev/null +++ b/vendor/react/event-loop/src/Timer/Timer.php @@ -0,0 +1,55 @@ +<?php + +namespace React\EventLoop\Timer; + +use React\EventLoop\TimerInterface; + +/** + * The actual connection implementation for TimerInterface + * + * This class should only be used internally, see TimerInterface instead. + * + * @see TimerInterface + * @internal + */ +final class Timer implements TimerInterface +{ + const MIN_INTERVAL = 0.000001; + + private $interval; + private $callback; + private $periodic; + + /** + * Constructor initializes the fields of the Timer + * + * @param float $interval The interval after which this timer will execute, in seconds + * @param callable $callback The callback that will be executed when this timer elapses + * @param bool $periodic Whether the time is periodic + */ + public function __construct($interval, $callback, $periodic = false) + { + if ($interval < self::MIN_INTERVAL) { + $interval = self::MIN_INTERVAL; + } + + $this->interval = (float) $interval; + $this->callback = $callback; + $this->periodic = (bool) $periodic; + } + + public function getInterval() + { + return $this->interval; + } + + public function getCallback() + { + return $this->callback; + } + + public function isPeriodic() + { + return $this->periodic; + } +} diff --git a/vendor/react/event-loop/src/Timer/Timers.php b/vendor/react/event-loop/src/Timer/Timers.php new file mode 100644 index 0000000..3a33b8c --- /dev/null +++ b/vendor/react/event-loop/src/Timer/Timers.php @@ -0,0 +1,112 @@ +<?php + +namespace React\EventLoop\Timer; + +use React\EventLoop\TimerInterface; + +/** + * A scheduler implementation that can hold multiple timer instances + * + * This class should only be used internally, see TimerInterface instead. + * + * @see TimerInterface + * @internal + */ +final class Timers +{ + private $time; + private $timers = array(); + private $schedule = array(); + private $sorted = true; + private $useHighResolution; + + public function __construct() + { + // prefer high-resolution timer, available as of PHP 7.3+ + $this->useHighResolution = \function_exists('hrtime'); + } + + public function updateTime() + { + return $this->time = $this->useHighResolution ? \hrtime(true) * 1e-9 : \microtime(true); + } + + public function getTime() + { + return $this->time ?: $this->updateTime(); + } + + public function add(TimerInterface $timer) + { + $id = \spl_object_hash($timer); + $this->timers[$id] = $timer; + $this->schedule[$id] = $timer->getInterval() + $this->updateTime(); + $this->sorted = false; + } + + public function contains(TimerInterface $timer) + { + return isset($this->timers[\spl_object_hash($timer)]); + } + + public function cancel(TimerInterface $timer) + { + $id = \spl_object_hash($timer); + unset($this->timers[$id], $this->schedule[$id]); + } + + public function getFirst() + { + // ensure timers are sorted to simply accessing next (first) one + if (!$this->sorted) { + $this->sorted = true; + \asort($this->schedule); + } + + return \reset($this->schedule); + } + + public function isEmpty() + { + return \count($this->timers) === 0; + } + + public function tick() + { + // hot path: skip timers if nothing is scheduled + if (!$this->schedule) { + return; + } + + // ensure timers are sorted so we can execute in order + if (!$this->sorted) { + $this->sorted = true; + \asort($this->schedule); + } + + $time = $this->updateTime(); + + foreach ($this->schedule as $id => $scheduled) { + // schedule is ordered, so loop until first timer that is not scheduled for execution now + if ($scheduled >= $time) { + break; + } + + // skip any timers that are removed while we process the current schedule + if (!isset($this->schedule[$id]) || $this->schedule[$id] !== $scheduled) { + continue; + } + + $timer = $this->timers[$id]; + \call_user_func($timer->getCallback(), $timer); + + // re-schedule if this is a periodic timer and it has not been cancelled explicitly already + if ($timer->isPeriodic() && isset($this->timers[$id])) { + $this->schedule[$id] = $timer->getInterval() + $time; + $this->sorted = false; + } else { + unset($this->timers[$id], $this->schedule[$id]); + } + } + } +} diff --git a/vendor/react/event-loop/src/TimerInterface.php b/vendor/react/event-loop/src/TimerInterface.php new file mode 100644 index 0000000..cdcf773 --- /dev/null +++ b/vendor/react/event-loop/src/TimerInterface.php @@ -0,0 +1,27 @@ +<?php + +namespace React\EventLoop; + +interface TimerInterface +{ + /** + * Get the interval after which this timer will execute, in seconds + * + * @return float + */ + public function getInterval(); + + /** + * Get the callback that will be executed when this timer elapses + * + * @return callable + */ + public function getCallback(); + + /** + * Determine whether the time is periodic + * + * @return bool + */ + public function isPeriodic(); +} |