Time exceeded.
{$this->identifier}_default_time_limit
WP_Background_Process::is_process_running
Is process running
{$this->identifier}_time_exceeded
WP_Background_Process::lock_process
Lock process
WP_Background_Process::complete
Complete.
{$this->identifier}_queue_lock_time
WP_Background_Process::schedule_cron_healthcheck
Schedule cron healthcheck
WP_Background_Process::unlock_process
Unlock process