一个用于消息队列的并发式php进程管理程序-进程管理

进程管理

用于保存进程队列

进程启动

关闭进程

class ProcessManager
{
    protected $executable = "/bin/php";
    protected $_processes = array();
    protected $_proc_max  = 100;
    protected $_queues = array();

    public function add_process($script) {
        if ( !isset($script["executable"]) ) {
            $script["executable"] = $this->executable;
        }
        _print_log("current process num:".count($this->_processes));
        if ( count($this->_processes) == $this->_proc_max) {
            TimeRecorder::add($script['message_id'], IndexTag::Waiting);
            _print_log("process is max, push in queue :".count($this->_queues));
            array_push($this->_queues, $script);
        } else {
            _print_log("exec :".$script["name"]);
            TimeRecorder::add($script['message_id'], IndexTag::StartExec);
            $this->_processes[] =  new Process($script["executable"], $script["name"], $script);
        }
    }

    public function clear() {
        while( count($this->_processes) > 0 ) {
            _print_log("waiting for close processes...");
            $this->close_processes();
        }
    }

    public function close_processes($kill = false) {
        // close is done process
        foreach ($this->_processes as $i => $process) {
            if (!$process->is_running() || $process->is_over_executed() || $kill) {
                $error = $process->get_error();
                _print_dividing_lines();
                if ($error != '') {
                    _print_log($process->get_script(). " error:".$error);
                }

                if (!$process->is_running()) {
                    $result = $process->get_result();
                    _print_log("Done: ".$process->get_script(). "\nreturn:[".$result."]");
                } else {
                    _print_log("Killed: ".$process->get_script());
                }
                TimeRecorder::add($process->message_id, IndexTag::EndExec);
                $ret = $process->close();
                TimeRecorder::show($process->message_id);
                _print_log("exitcode: ".$ret);
                _print_dividing_lines();
                unset($this->_processes[$i]);
            }
        }

        if ( count($this->_processes) < $this->_proc_max && count($this->_queues) > 1 ) {
            _print_log("queues into processes...");
            do {
                $script = array_shift($this->_queues);
                if ( is_null($script) ) {
                    break;
                }
                $this->add_process($script);
            } while(count($this->_processes) < $this->_proc_max);
        }
    }

    public function __destruct() {
        $this->close_processes(true);
    }
}