ok
Mini Shell
<?php
namespace Amp\Loop;
use Amp\Coroutine;
use Amp\Promise;
use React\Promise\PromiseInterface as ReactPromise;
use function Amp\Internal\getCurrentTime;
use function Amp\Promise\rethrow;
class EventDriver extends Driver
{
/** @var \Event[]|null */
private static $activeSignals;
/** @var \EventBase */
private $handle;
/** @var \Event[] */
private $events = [];
/** @var callable */
private $ioCallback;
/** @var callable */
private $timerCallback;
/** @var callable */
private $signalCallback;
/** @var \Event[] */
private $signals = [];
/** @var int Internal timestamp for now. */
private $now;
/** @var int Loop time offset */
private $nowOffset;
public function __construct()
{
$config = new \EventConfig();
if (\DIRECTORY_SEPARATOR !== '\\') {
$config->requireFeatures(\EventConfig::FEATURE_FDS);
}
$this->handle = new \EventBase($config);
$this->nowOffset = getCurrentTime();
$this->now = \random_int(0, $this->nowOffset);
$this->nowOffset -= $this->now;
if (self::$activeSignals === null) {
self::$activeSignals = &$this->signals;
}
/**
* @param $resource
* @param $what
* @param Watcher $watcher
*
* @return void
*/
$this->ioCallback = function ($resource, $what, Watcher $watcher) {
\assert(\is_resource($watcher->value));
try {
$result = ($watcher->callback)($watcher->id, $watcher->value, $watcher->data);
if ($result === null) {
return;
}
if ($result instanceof \Generator) {
$result = new Coroutine($result);
}
if ($result instanceof Promise || $result instanceof ReactPromise) {
rethrow($result);
}
} catch (\Throwable $exception) {
$this->error($exception);
}
};
/**
* @param $resource
* @param $what
* @param Watcher $watcher
*
* @return void
*/
$this->timerCallback = function ($resource, $what, Watcher $watcher) {
\assert(\is_int($watcher->value));
if ($watcher->type & Watcher::DELAY) {
$this->cancel($watcher->id);
} else {
$this->events[$watcher->id]->add($watcher->value / self::MILLISEC_PER_SEC);
}
try {
$result = ($watcher->callback)($watcher->id, $watcher->data);
if ($result === null) {
return;
}
if ($result instanceof \Generator) {
$result = new Coroutine($result);
}
if ($result instanceof Promise || $result instanceof ReactPromise) {
rethrow($result);
}
} catch (\Throwable $exception) {
$this->error($exception);
}
};
/**
* @param $signum
* @param $what
* @param Watcher $watcher
*
* @return void
*/
$this->signalCallback = function ($signum, $what, Watcher $watcher) {
try {
$result = ($watcher->callback)($watcher->id, $watcher->value, $watcher->data);
if ($result === null) {
return;
}
if ($result instanceof \Generator) {
$result = new Coroutine($result);
}
if ($result instanceof Promise || $result instanceof ReactPromise) {
rethrow($result);
}
} catch (\Throwable $exception) {
$this->error($exception);
}
};
}
/**
* {@inheritdoc}
*/
public function cancel(string $watcherId)
{
parent::cancel($watcherId);
if (isset($this->events[$watcherId])) {
$this->events[$watcherId]->free();
unset($this->events[$watcherId]);
}
}
public static function isSupported(): bool
{
return \extension_loaded("event");
}
/**
* @codeCoverageIgnore
*/
public function __destruct()
{
// Unset here, otherwise $event->del() in the loop may fail with a warning, because __destruct order isn't defined.
// Related https://github.com/amphp/amp/issues/159.
$events = $this->events;
$this->events = [];
foreach ($events as $event) {
if ($event !== null) { // Events may have been nulled in extension depending on destruct order.
$event->free();
}
}
// Manually free the loop handle to fully release loop resources.
// See https://github.com/amphp/amp/issues/177.
if ($this->handle !== null) {
$this->handle->free();
$this->handle = null;
}
}
/**
* {@inheritdoc}
*/
public function run()
{
$active = self::$activeSignals;
\assert($active !== null);
foreach ($active as $event) {
$event->del();
}
self::$activeSignals = &$this->signals;
foreach ($this->signals as $event) {
/** @psalm-suppress TooFewArguments https://github.com/JetBrains/phpstorm-stubs/pull/763 */
$event->add();
}
try {
parent::run();
} finally {
foreach ($this->signals as $event) {
$event->del();
}
self::$activeSignals = &$active;
foreach ($active as $event) {
/** @psalm-suppress TooFewArguments https://github.com/JetBrains/phpstorm-stubs/pull/763 */
$event->add();
}
}
}
/**
* {@inheritdoc}
*/
public function stop()
{
$this->handle->stop();
parent::stop();
}
/**
* {@inheritdoc}
*/
public function now(): int
{
$this->now = getCurrentTime() - $this->nowOffset;
return $this->now;
}
/**
* {@inheritdoc}
*/
public function getHandle(): \EventBase
{
return $this->handle;
}
/**
* {@inheritdoc}
*
* @return void
*/
protected function dispatch(bool $blocking)
{
$this->handle->loop($blocking ? \EventBase::LOOP_ONCE : \EventBase::LOOP_ONCE | \EventBase::LOOP_NONBLOCK);
}
/**
* {@inheritdoc}
*
* @return void
*/
protected function activate(array $watchers)
{
$now = $this->now();
foreach ($watchers as $watcher) {
if (!isset($this->events[$id = $watcher->id])) {
switch ($watcher->type) {
case Watcher::READABLE:
\assert(\is_resource($watcher->value));
$this->events[$id] = new \Event(
$this->handle,
$watcher->value,
\Event::READ | \Event::PERSIST,
$this->ioCallback,
$watcher
);
break;
case Watcher::WRITABLE:
\assert(\is_resource($watcher->value));
$this->events[$id] = new \Event(
$this->handle,
$watcher->value,
\Event::WRITE | \Event::PERSIST,
$this->ioCallback,
$watcher
);
break;
case Watcher::DELAY:
case Watcher::REPEAT:
\assert(\is_int($watcher->value));
$this->events[$id] = new \Event(
$this->handle,
-1,
\Event::TIMEOUT,
$this->timerCallback,
$watcher
);
break;
case Watcher::SIGNAL:
\assert(\is_int($watcher->value));
$this->events[$id] = new \Event(
$this->handle,
$watcher->value,
\Event::SIGNAL | \Event::PERSIST,
$this->signalCallback,
$watcher
);
break;
default:
// @codeCoverageIgnoreStart
throw new \Error("Unknown watcher type");
// @codeCoverageIgnoreEnd
}
}
switch ($watcher->type) {
case Watcher::DELAY:
case Watcher::REPEAT:
\assert(\is_int($watcher->value));
$interval = \max(0, $watcher->expiration - $now);
$this->events[$id]->add($interval > 0 ? $interval / self::MILLISEC_PER_SEC : 0);
break;
case Watcher::SIGNAL:
$this->signals[$id] = $this->events[$id];
// no break
default:
/** @psalm-suppress TooFewArguments https://github.com/JetBrains/phpstorm-stubs/pull/763 */
$this->events[$id]->add();
break;
}
}
}
/**
* {@inheritdoc}
*
* @return void
*/
protected function deactivate(Watcher $watcher)
{
if (isset($this->events[$id = $watcher->id])) {
$this->events[$id]->del();
if ($watcher->type === Watcher::SIGNAL) {
unset($this->signals[$id]);
}
}
}
}
Zerion Mini Shell 1.0