/**
* Check runtime enviornment and initlialize resource for process
* Resource include Mutex resource and shared variables
* Call by construct
*
* @return void
*/
private function __initialize()
{
if (substr(php_sapi_name(), 0, 3) != 'cli') {
throw new Hush_Process_Exception("Please use cli mode to run this script");
}
if (!extension_loaded("pcntl") || !extension_loaded("posix") || !extension_loaded("sysvsem")) {
throw new Hush_Process_Exception("You need to open pcntl, posix, sysvsem extensions");
}
// init mutex for lock
$mutex_id = $this->ftbm + $this->pid;
$this->mutex = sem_get($mutex_id, 1);
// register callback functions
pcntl_signal(SIGTERM, array(&$this, "__singal"));
pcntl_signal(SIGHUP, array(&$this, "__singal"));
pcntl_signal(SIGUSR1, array(&$this, "__singal"));
// get parent process id
if (!self::$parentPid) {
self::$parentPid = posix_getpid();
}
// do init logic in subclasses
$this->__init();
}
