/**
* Respond to a signal
*
* @param $signal
*/
public function handleSignals($signal)
{
$signame = array_search($signal, $this->signals);
if (!$signame) {
$signame = 'UNKNOWN';
}
if (!SignalHandler::$blockExit) {
Logger::critical(sprintf('Exiting : %s signal received', $signame));
exit;
} else {
Logger::warning(sprintf('%s signal received : Exit queued', $signame));
SignalHandler::$forceExit = true;
}
}
/**
* Exits this process if there is already one running (this one makes 2)
*
* @return void
*/
protected function thereCanBeOnlyOne()
{
$controller = $this->__toString();
$parts = preg_split('/[^a-zA-Z0-9]{1,}/', $controller);
$regex = join('[^a-zA-Z0-9]{1,2}', $parts);
$cmd = 'ps ax | grep -v grep | egrep -c "' . $regex . '"';
$res = `{$cmd}`;
if (intval($res) > 1) {
Logger::critical('Unable to launch : Process already running');
exit(1);
}
}
/**
* Daemonises the process
*/
protected function fork_to_bg()
{
$daemon_pid = pcntl_fork();
switch ($daemon_pid) {
case -1:
Logger::emergency('Unable to fork daemon process');
exit(1);
// fork failed
// fork failed
case 0:
// this child is our daemon
$this->process_pid = getmypid();
break;
default:
// we are the parent - the one from the FG command line
// return control to command line by exiting...
\Cli\line('Daemon process running : pid=%y' . $daemon_pid . '%n');
exit(0);
}
// promote the daemon process so it doesn't die because the parent has
if (posix_setsid() === -1) {
Logger::critical('Error creating daemon as session leader');
exit(1);
}
fclose(STDIN);
fclose(STDOUT);
fclose(STDERR);
$this->_stdIn = fopen('/dev/null', 'r');
// set fd/0
$this->_stdOut = fopen('/dev/null', 'w');
// set fd/1
$this->_stdErr = fopen('php://stdout', 'w');
// a hack to duplicate fd/1 to 2
// Silence any console output from the logger
Logger::setSilentConsole(true);
Logger::notice('Daemon process running : pid=' . getmypid());
}
