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<?php

class ActionScheduler_QueueRunner extends ActionScheduler_Abstract_QueueRunner
{
    const WP_CRON_HOOK = 'action_scheduler_run_queue';
    const WP_CRON_SCHEDULE = 'every_minute';
    protected $async_request;
    private static $runner = null;
    public static function instance()
    {
        if (empty(self::$runner)) {
            $class = apply_filters('action_scheduler_queue_runner_class', 'ActionScheduler_QueueRunner');
            self::$runner = new $class();
        }
        return self::$runner;
    }
    public function __construct(ActionScheduler_Store $store = null, ActionScheduler_FatalErrorMonitor $monitor = null, ActionScheduler_QueueCleaner $cleaner = null, ActionScheduler_AsyncRequest_QueueRunner $async_request = null)
    {
        parent::__construct($store, $monitor, $cleaner);
        if (is_null($async_request)) {
            $async_request = new ActionScheduler_AsyncRequest_QueueRunner($this->store);
        }
        $this->async_request = $async_request;
    }
    public function init()
    {
        add_filter('cron_schedules', array(self::instance(), 'add_wp_cron_schedule'));
        $next_timestamp = wp_next_scheduled(self::WP_CRON_HOOK);
        if ($next_timestamp) {
            wp_unschedule_event($next_timestamp, self::WP_CRON_HOOK);
        }
        $cron_context = array('WP Cron');
        if (!wp_next_scheduled(self::WP_CRON_HOOK, $cron_context)) {
            $schedule = apply_filters('action_scheduler_run_schedule', self::WP_CRON_SCHEDULE);
            wp_schedule_event(time(), $schedule, self::WP_CRON_HOOK, $cron_context);
        }
        add_action(self::WP_CRON_HOOK, array(self::instance(), 'run'));
        $this->hook_dispatch_async_request();
    }
    public function hook_dispatch_async_request()
    {
        add_action('shutdown', array($this, 'maybe_dispatch_async_request'));
    }
    public function unhook_dispatch_async_request()
    {
        remove_action('shutdown', array($this, 'maybe_dispatch_async_request'));
    }
    public function maybe_dispatch_async_request()
    {
        if (is_admin() && !ActionScheduler::lock()->is_locked('async-request-runner')) {
            ActionScheduler::lock()->set('async-request-runner');
            $this->async_request->maybe_dispatch();
        }
    }
    public function run($context = 'WP Cron')
    {
        ActionScheduler_Compatibility::raise_memory_limit();
        ActionScheduler_Compatibility::raise_time_limit($this->get_time_limit());
        do_action('action_scheduler_before_process_queue');
        $this->run_cleanup();
        $processed_actions = 0;
        if (false === $this->has_maximum_concurrent_batches()) {
            $batch_size = apply_filters('action_scheduler_queue_runner_batch_size', 25);
            do {
                $processed_actions_in_batch = $this->do_batch($batch_size, $context);
                $processed_actions += $processed_actions_in_batch;
            } while ($processed_actions_in_batch > 0 && !$this->batch_limits_exceeded($processed_actions));
        }
        do_action('action_scheduler_after_process_queue');
        return $processed_actions;
    }
    protected function do_batch($size = 100, $context = '')
    {
        $claim = $this->store->stake_claim($size);
        $this->monitor->attach($claim);
        $processed_actions = 0;
        foreach ($claim->get_actions() as $action_id) {
            if (!in_array($action_id, $this->store->find_actions_by_claim_id($claim->get_id()))) {
                break;
            }
            $this->process_action($action_id, $context);
            $processed_actions++;
            if ($this->batch_limits_exceeded($processed_actions)) {
                break;
            }
        }
        $this->store->release_claim($claim);
        $this->monitor->detach();
        $this->clear_caches();
        return $processed_actions;
    }
    protected function clear_caches()
    {
        if (!wp_using_ext_object_cache() || apply_filters('action_scheduler_queue_runner_flush_cache', false)) {
            wp_cache_flush();
        }
    }
    public function add_wp_cron_schedule($schedules)
    {
        $schedules['every_minute'] = array('interval' => 60, 'display' => __('Every minute', 'woocommerce'));
        return $schedules;
    }
}