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parallel/lib/Worker/WorkerThread.php
2017-11-30 23:58:41 -06:00

37 lines
1.2 KiB
PHP

<?php
namespace Amp\Parallel\Worker;
use Amp\Parallel\Context\Thread;
use Amp\Promise;
/**
* A worker thread that executes task objects.
*/
class WorkerThread extends AbstractWorker {
/**
* @param string $envClassName Name of class implementing \Amp\Parallel\Worker\Environment to instigate.
* Defaults to \Amp\Parallel\Worker\BasicEnvironment.
*/
public function __construct(string $envClassName = BasicEnvironment::class) {
parent::__construct(new Thread(function (string $className): Promise {
if (!\class_exists($className)) {
throw new \Error(\sprintf("Invalid environment class name '%s'", $className));
}
if (!\is_subclass_of($className, Environment::class)) {
throw new \Error(\sprintf("The class '%s' does not implement '%s'", $className, Environment::class));
}
$environment = new $className;
if (!\defined("AMP_WORKER")) {
\define("AMP_WORKER", "amp-worker");
}
$runner = new TaskRunner($this, $environment);
return $runner->run();
}, $envClassName));
}
}