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<?php
namespace Amp\Parallel\Worker;
use Amp\Parallel\Context\Thread;
use Amp\Parallel\Sync\Channel;
use Amp\Promise;
/**
* A worker thread that executes task objects.
*
* @deprecated ext-pthreads development has been halted, see https://github.com/krakjoe/pthreads/issues/929
*/
final class WorkerThread extends TaskWorker
{
/**
* @param string $envClassName Name of class implementing \Amp\Parallel\Worker\Environment to instigate.
* Defaults to \Amp\Parallel\Worker\BasicEnvironment.
* @param string|null $bootstrapPath Path to custom autoloader.
*/
public function __construct(string $envClassName = BasicEnvironment::class, string $bootstrapPath = null)
{
parent::__construct(new Thread(static function (Channel $channel, string $className, string $bootstrapPath = null): Promise {
if ($bootstrapPath !== null) {
if (!\is_file($bootstrapPath)) {
throw new \Error(\sprintf("No file found at bootstrap file path given '%s'", $bootstrapPath));
}
// Include file within unbound closure to protect scope.
(static function () use ($bootstrapPath): void {
require $bootstrapPath;
})->bindTo(null, null)();
}
if (!\class_exists($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_CONTEXT);
}
$runner = new TaskRunner($channel, $environment);
return $runner->run();
}, $envClassName, $bootstrapPath));
}
}