Icicle\Concurrent\Forking\Fork::start PHP Méthode

    public function start()
    {
        if (0 !== $this->oid) {
            throw new StatusError('The context has already been started.');
        }
        list($parent, $child) = Stream\pair();
        switch ($pid = pcntl_fork()) {
            case -1:
                // Failure
                throw new ForkException('Could not fork process!');
            case 0:
                // Child
                // @codeCoverageIgnoreStart
                // Create a new event loop in the fork.
                Loop\loop($loop = Loop\create(false));
                $channel = new ChannelledStream($pipe = new DuplexPipe($parent));
                fclose($child);
                $coroutine = new Coroutine($this->execute($channel));
                $coroutine->done();
                try {
                    $loop->run();
                    $code = 0;
                } catch (\Throwable $exception) {
                    $code = 1;
                }
                $pipe->close();
                exit($code);
                // @codeCoverageIgnoreEnd
            // @codeCoverageIgnoreEnd
            default:
                // Parent
                $this->pid = $pid;
                $this->oid = posix_getpid();
                $this->channel = new ChannelledStream($this->pipe = new DuplexPipe($child));
                fclose($parent);
        }
    }