Current File : /home2/selectio/public_html/fms-worksuite/vendor/amphp/amp/lib/Loop/DriverFactory.php
<?php
namespace Amp\Loop;
// @codeCoverageIgnoreStart
class DriverFactory
{
/**
* Creates a new loop instance and chooses the best available driver.
*
* @return Driver
*
* @throws \Error If an invalid class has been specified via AMP_LOOP_DRIVER
*/
public function create(): Driver
{
$driver = (function () {
if ($driver = $this->createDriverFromEnv()) {
return $driver;
}
if (UvDriver::isSupported()) {
return new UvDriver;
}
if (EvDriver::isSupported()) {
return new EvDriver;
}
if (EventDriver::isSupported()) {
return new EventDriver;
}
return new NativeDriver;
})();
if (\getenv("AMP_DEBUG_TRACE_WATCHERS")) {
return new TracingDriver($driver);
}
return $driver;
}
/**
* @return Driver|null
*/
private function createDriverFromEnv()
{
$driver = \getenv("AMP_LOOP_DRIVER");
if (!$driver) {
return null;
}
if (!\class_exists($driver)) {
throw new \Error(\sprintf(
"Driver '%s' does not exist.",
$driver
));
}
if (!\is_subclass_of($driver, Driver::class)) {
throw new \Error(\sprintf(
"Driver '%s' is not a subclass of '%s'.",
$driver,
Driver::class
));
}
return new $driver;
}
}
// @codeCoverageIgnoreEnd
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