The unique function to start work
@return bool
428678
public function start()
    {
        if (!isset($this->config['walkers']) || empty($this->config['walkers'])) {
            $this->logger->log(LibLog::LOG_ERROR, "There is not an available walker configured.");
            return false;
        }
        foreach ($this->config['walkers'] as $walker_name => $status) {
            if ($status) {
                $goNext=$this->walkWith($walker_name);
                if (!$goNext) {
                    $this->logger->log(LibLog::LOG_WARNING, "The walker '{$walker_name}' stopped walking, exit.");
                    return false;
                }
            }
        }
        $this->logger->log(LibLog::LOG_INFO, "All walkers have satisfied.");
        return true;
    }
683583
protected function launchWorker(): bool {
        $this->log(LogLevel::DEBUG, "[{pid}]   launching fleet worker");

        // Prepare current state prior to forking
        $workerConfig = $this->payloadExec('getWorkerConfig');
        if ($workerConfig === false) {
            $this->log(LogLevel::DEBUG, "[{pid}]    launch cancelled by payload");
            return false;
        }

        $this->fork('fleet', $workerConfig);

        // Return daemon thread
        if ($this->realm != 'worker') {
            return true;
        }

        /*
         *
         * WORKER THREADS BELOW
         *
         */

        // Unhandle SIGINT, SIGTERM, SIGCHLD
        pcntl_signal(SIGINT, SIG_DFL);
        pcntl_signal(SIGTERM, SIG_DFL);
        pcntl_signal(SIGCHLD, SIG_DFL);

        // Move handling of SIGHUP, SIGUSR1, SIGUSR2 to workerSignal()
        pcntl_signal(SIGHUP, [$this, 'workerSignal']);
        pcntl_signal(SIGUSR1, [$this, 'workerSignal']);
        pcntl_signal(SIGUSR2, [$this, 'workerSignal']);

        $exitCode = $this->runPayloadApplication($workerConfig);
        exit($exitCode);
    }
742950
public function init()
{
    $req = $this;

    $job = $this->job = new \PHPDaemon\Core\ComplexJob(function () use ($req) { // called when job is done

        $req->wakeup(); // wake up the request immediately

    });

    $job('getServers', function ($name, $job) use ($req) { // registering job named 'pingjob'

        $req->appInstance->servers->find(function ($cursor) use ($name, $job) {
            $job->setResult($name, $cursor->items);
        });
    });

    $job(); // let the fun begin

    $this->sleep(5); // setting timeout
}
809670
public function start()
  {
    $rememberMe = Remember::$rememberMe;
    $loginResult = $rememberMe->login();

    if ($loginResult->isSuccess()) {
      $_SESSION['_uas'] = $loginResult->getCredential();
      $_SESSION['remembered_by_cookie'] = true;
      return;
    }

    if ($loginResult->hasPossibleManipulation()) {
      exit();
    }

    if ($loginResult->isExpired() && !empty($_SESSION['_uas']) && !empty($_SESSION['remembered_by_cookie'])) {
      $rememberMe->clearCookie();
      unset($_SESSION['_uas']);
      unset($_SESSION['remembered_by_cookie']);
      exit();
    }
    if ($loginResult->isExpired() && !empty($_SESSION['_uas'])) {
      sleep(5);
    }
  }
139300
protected function startup()
    {
        $this->init(self::INIT_WITH_DB | self::INIT_WITH_PLUGINS);

        // set filename if not index.php
        if (($basename = basename($_SERVER['SCRIPT_FILENAME'])) && $basename != 'index.php') {
            $this->filename = $basename;
        }

        // load all configured plugins
        $plugins          = (array) $this->config->get('plugins', array());
        $required_plugins = array('filesystem_attachments', 'jqueryui');
        $this->plugins->load_plugins($plugins, $required_plugins);

        // start session
        $this->session_init();

        // create user object
        $this->set_user(new rcube_user($_SESSION['user_id']));

        // set task and action properties
        $this->set_task(rcube_utils::get_input_value('_task', rcube_utils::INPUT_GPC));
        $this->action = asciiwords(rcube_utils::get_input_value('_action', rcube_utils::INPUT_GPC));

        // reset some session parameters when changing task
        if ($this->task != 'utils') {
            // we reset list page when switching to another task
            // but only to the main task interface - empty action (#1489076, #1490116)
            // this will prevent from unintentional page reset on cross-task requests
            if ($this->session && $_SESSION['task'] != $this->task && empty($this->action)) {
                $this->session->remove('page');

                // set current task to session
                $_SESSION['task'] = $this->task;
            }
        }

        // init output class (not in CLI mode)
        if (!empty($_REQUEST['_remote'])) {
            $GLOBALS['OUTPUT'] = $this->json_init();
        }
        else if ($_SERVER['REMOTE_ADDR']) {
            $GLOBALS['OUTPUT'] = $this->load_gui(!empty($_REQUEST['_framed']));
        }

        // run init method on all the plugins
        $this->plugins->init($this, $this->task);
    }
1358336
public function start()
    {
        if ($collector = end(static::$_collectors)) {
            $collector->add($collector->_driver->stop());
        }
        static::$_collectors[] = $this;
        $this->_driver->start();
        return true;
    }
448220
public function isStarted()
    {
        $started = false;
        if (version_compare(phpversion(), '5.4.0', '>=')) {
            $started = session_status() === PHP_SESSION_ACTIVE ? true : false;
        } else {
            $started = session_id() === '' ? false : true;
        }

        return $started;
    }
659589
public function start() {
        if ($this->dialect) {
            //允许事务嵌套
            $this->transLevel += 1;
            $dialect          = $this->dialect;
            if ($dialect->inTransaction()) {
                return true;
            }
            $rst = $dialect->beginTransaction();
            if ($rst) {
                return true;
            } else {
                $this->transLevel -= 1;
            }
        }

        return false;
    }
1206501
function start()
	{
		$originalProps = $this->props;		
		$response = new ET_Perform($this->authStub, $this->obj, 'start', $this->props);
		if ($response->status) {
			$this->lastTaskID = $response->results[0]->Task->ID;
		}
		$this->props = $originalProps;
		return $response;
	}
716599
public function start(): bool
    {
        if (!is_null($this->expiration)) {
            $this->expiration->start();
        }
        if (!is_null($this->fingerprint)) {
            $this->fingerprint->start();
        }
        if (!isset($_SESSION['__HANDLER_INITIATED'])) {
            return $this->initialSessionStart();
        } else {
            return $this->laterSessionStart();
        }
    }
1078181
public function init() {
		if ( ! $this->is_enabled() ) {
			return false;
		}

		add_filter( 'cron_schedules', array( $this, 'schedule_cron' ) );
		add_action( $this->id, array( $this, 'cron_worker' ) );

		if ( ! wp_next_scheduled( $this->id ) ) {
			// Schedule health check
			wp_schedule_event( time(), $this->id, $this->id );
		}

		return true;
	}
19392
public function start()
    {
        if (!$this->isActive()) {
            return true;
        }

        if (!$this->hasCache()) {
            ob_start();
            return true;
        }

        $this->getCache(true);
        return false;
    }
1072749
public function actionStart()
    {
        if ($this->clearLogs) {
            if (file_exists(static::$logFile)) {
                unlink(static::$logFile);
            }
            if (file_exists(static::$errorLogFile)) {
                unlink(static::$errorLogFile);
            }
        }

        $message = 'Starting Yii 2 Daemon ' . $this->version . '... ';

        if ($this->_getPid() === false) {
            $this->_getWorkers();
            if (!static::$_workersData) {
                $message .= 'No tasks found. Stopping!';
                echo $message . PHP_EOL;
                $this->_log($message);
                return static::EXIT_CODE_ERROR;
            }
            if ($this->_meetRequerements) {
                pcntl_signal(SIGTERM, ['inpassor\daemon\Controller', 'signalHandler']);
                pcntl_signal(SIGINT, ['inpassor\daemon\Controller', 'signalHandler']);
                pcntl_signal(SIGCHLD, ['inpassor\daemon\Controller', 'signalHandler']);
            }
        } else {
            $message .= 'Service is already running!';
            echo $message . PHP_EOL;
            $this->_log($message);
            return static::EXIT_CODE_NORMAL;
        }

        $this->_pid = $this->_meetRequerements ? pcntl_fork() : 0;
        if ($this->_pid == -1) {
            $message .= 'Could not start service!';
            echo $message . PHP_EOL;
            $this->_log($message);
            return static::EXIT_CODE_ERROR;
        } elseif ($this->_pid) {
            file_put_contents($this->_pidFile, $this->_pid);
            return static::EXIT_CODE_NORMAL;
        }
        if ($this->_meetRequerements) {
            posix_setsid();
        }

        $message .= 'OK.';
        echo $message . PHP_EOL;
        $this->_log($message);

        if ($this->_meetRequerements) {
            declare(ticks=1);
        };

        $previousSec = null;

        while (!static::$_stop) {
            $currentSec = date('s');
            $tickPlus = $currentSec === $previousSec ? 0 : 1;
            if ($tickPlus) {
                foreach (static::$_workersData as $workerUid => $workerData) {
                    if ($workerData['tick'] >= $workerData['delay']) {
                        static::$_workersData[$workerUid]['tick'] = 0;
                        $pid = 0;
                        if ($this->_meetRequerements) {
                            if (!isset(static::$workersPids[$workerUid])) {
                                static::$workersPids[$workerUid] = [];
                            }
                            $pid = (count(static::$workersPids[$workerUid]) < $workerData['maxProcesses']) ? pcntl_fork() : -2;
                        }
                        if ($pid == -1) {
                            $this->_log('Could not launch worker "' . $workerUid . '"');
                        } elseif ($pid == -2) {
                            $this->_log('Max processes exceed for launch worker "' . $workerUid . '"');
                        } elseif ($pid) {
                            static::$workersPids[$workerUid][] = $pid;
                        } else {

                            $config = ArrayHelper::merge(static::$_workersConfig[$workerUid] ?? [], [
                                'uid' => $workerUid
                            ]);

                            /** @var \inpassor\daemon\Worker $worker */
                            $worker = \Yii::createObject($config);
                            $worker->run();

                            if ($this->_meetRequerements) {
                                return static::EXIT_CODE_NORMAL;
                            }
                        }
                    }
                    static::$_workersData[$workerUid]['tick'] += $tickPlus;
                }
            }
            usleep(500000);
            $previousSec = $currentSec;
        }
        return static::EXIT_CODE_NORMAL;
    }
807236
public function startTransaction()
    {
        $this->db_connect('w', true);

        // check connection before proceeding
        if (!$this->is_connected()) {
            return $this->last_result = false;
        }

        $this->debug('BEGIN TRANSACTION');

        return $this->last_result = $this->dbh->beginTransaction();
    }
203004
public function startup()
    {
        if (!$this->request->is('post') || !$this->_actionCheck()) {
            return null;
        }

        list($url) = explode('?', $this->request->getRequestTarget());

        $params = $this->_filterParams();
        if ($params) {
            $url .= '?' . http_build_query($params);
        }

        return $this->_registry->getController()->redirect($url);
    }
231117
public function startup()
    {
        /** @var \Shopgate\Base\Helper\Initializer\Config $initializer */
        $manager              = ObjectManager::getInstance();
        $initializer          = $manager->get('Shopgate\Base\Helper\Initializer\Config');
        $this->storeManager   = $initializer->getStoreManager();
        $this->logger         = $initializer->getLogger();
        $this->directory      = $initializer->getDirectory();
        $this->sgCoreConfig   = $initializer->getSgCoreConfig();
        $this->coreConfig     = $initializer->getCoreConfig();
        $this->cache          = $initializer->getCache();
        $this->configResource = $initializer->getConfigResource();
        $this->configMapping  = $initializer->getConfigMapping();
        $this->configMethods  = $initializer->getConfigMethods();
        $this->registry       = $initializer->getRegistry();
        $this->configHelper   = $initializer->getHelper();
        $this->plugin_name    = 'magento2';
        $this->configMapping  += $this->configHelper->loadUndefinedConfigPaths();
        $this->loadArray($this->configMethods);

        return true;
    }
955291
public function sessionStart()
    {
        if ( $this->storage && !$this->storage->isStarted() )
        {
            $this->storage->start();
        }

        return true;
    }