mirror of
https://github.com/danog/parallel.git
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738f50afe7
Uses PID in processes or a sequential ID for threads.
57 lines
2.0 KiB
PHP
57 lines
2.0 KiB
PHP
<?php
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namespace Amp\Parallel\Context\Internal;
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use Amp\Loop;
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use Amp\Parallel\Sync\Channel;
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use Amp\Parallel\Sync\ExitFailure;
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use Amp\Parallel\Sync\ExitSuccess;
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use Amp\Parallel\Sync\SerializationException;
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use Amp\Promise;
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use function Amp\call;
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final class ParallelRunner
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{
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const EXIT_CHECK_FREQUENCY = 250;
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public static function run(Channel $channel, string $path, array $argv): void
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{
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Loop::unreference(Loop::repeat(self::EXIT_CHECK_FREQUENCY, function () {
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// Timer to give the chance for the PHP VM to be interrupted by Runtime::kill(), since system calls such as
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// select() will not be interrupted.
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}));
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try {
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if (!\is_file($path)) {
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throw new \Error(\sprintf("No script found at '%s' (be sure to provide the full path to the script)", $path));
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}
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$argc = \array_unshift($argv, $path);
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try {
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// Protect current scope by requiring script within another function.
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$callable = (function () use ($argc, $argv): callable { // Using $argc so it is available to the required script.
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return require $argv[0];
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})();
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} catch (\TypeError $exception) {
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throw new \Error(\sprintf("Script '%s' did not return a callable function", $path), 0, $exception);
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} catch (\ParseError $exception) {
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throw new \Error(\sprintf("Script '%s' contains a parse error", $path), 0, $exception);
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}
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$result = new ExitSuccess(Promise\wait(call($callable, $channel)));
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} catch (\Throwable $exception) {
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$result = new ExitFailure($exception);
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}
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Promise\wait(call(function () use ($channel, $result) {
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try {
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yield $channel->send($result);
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} catch (SerializationException $exception) {
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// Serializing the result failed. Send the reason why.
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yield $channel->send(new ExitFailure($exception));
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}
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}));
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}
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}
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