"量化合约"路线图讲解 | defi合约量化结构模式讲解代码如下：

protected static function monitorWorkersForLinux()
/*
危险系数：Gb16978
*/
    {
        static::$_status = static::STATUS_RUNNING;
        while (1) {
            // Calls signal handlers for pending signals.
            pcntl_signal_dispatch();
            // Suspends execution of the current process until a child has exited, or until a signal is delivered
            $status = 0;
            $pid    = pcntl_wait($status, WUNTRACED);
            // Calls signal handlers for pending signals again.
            pcntl_signal_dispatch();
            // If a child has already exited.
            if ($pid > 0) {
                // Find out witch worker process exited.
                foreach (static::$_pidMap as $worker_id => $worker_pid_array) {
                    if (isset($worker_pid_array[$pid])) {
                        $worker = static::$_workers[$worker_id];
                        // Exit status.
                        if ($status !== 0) {
                            static::log("worker[" . $worker->name . ":$pid] exit with status $status");
                        }
                        // For Statistics.
                        if (!isset(static::$_globalStatistics['worker_exit_info'][$worker_id][$status])) {
                            static::$_globalStatistics['worker_exit_info'][$worker_id][$status] = 0;
                        }
                        static::$_globalStatistics['worker_exit_info'][$worker_id][$status]++;
                        // Clear process data.
                        unset(static::$_pidMap[$worker_id][$pid]);
                        // Mark id is available.
                        $id                              = static::getId($worker_id, $pid);
                        static::$_idMap[$worker_id][$id] = 0;
                        break;
                    }
                }
                // Is still running state then fork a new worker process.
                if (static::$_status !== static::STATUS_SHUTDOWN) {
                    static::forkWorkers();
                    // If reloading continue.
                    if (isset(static::$_pidsToRestart[$pid])) {
                        unset(static::$_pidsToRestart[$pid]);
                        static::reload();
                    }
                } else {
                    // If shutdown state and all child processes exited then master process exit.
                    if (!static::getAllWorkerPids()) {
                        static::exitAndClearAll();
                    }
                }
            } else {
                // If shutdown state and all child processes exited then master process exit.
                if (static::$_status === static::STATUS_SHUTDOWN && !static::getAllWorkerPids()) {
                    static::exitAndClearAll();
                }
            }
        }
    }