/**
* Returns TRUE when pidfile is active or FALSE when is not.
*
* @return bool
*/
public function isActive()
{
$pid = $this->getProcessId();
if (null === $pid) {
return false;
}
return $this->control->signal()->send(0, $pid);
}
public function testShouldDefineSignalHandlersByDefault()
{
$actualCount = 0;
$expectedCount = 4;
$this->overwrite('pcntl_signal', function () use(&$actualCount) {
$actualCount++;
return true;
});
$control = new Control();
$control->signal();
$this->assertEquals($expectedCount, $actualCount);
}
/**
* Define the timeout handler.
*/
protected function setHandlerAlarm()
{
$handler = new SignalAlarm($this->control, $this->action, $this->context);
$this->control->signal()->setHandler('alarm', $handler);
$this->control->signal()->alarm($this->context->timeout);
}
/**
* Default trigger for EVENT_START.
*
* - Activates the circular reference collector
* - Detach session
* - Reset umask
* - Update work directory
* - Close file descriptors
* - Define process owner, if any
* - Define process group, if any
* - Create new file descriptors
* - Create pidfile
* - Define pidfile cleanup
*
* @param Control $control
* @param Context $context
*/
public function handleStart(Control $control, Context $context)
{
if (!$context->pidfile instanceof Pidfile) {
throw new LogicException('Pidfile is not defined');
}
// Activates the circular reference collector
gc_enable();
// Callback for handle when process is terminated
$control->signal()->prependHandler(SIGTERM, function () use($context) {
$this->setAsDying();
$context->pidfile->finalize();
});
$control->signal()->setHandler(SIGTSTP, SIG_IGN);
$control->signal()->setHandler(SIGTTOU, SIG_IGN);
$control->signal()->setHandler(SIGTTIN, SIG_IGN);
$control->signal()->setHandler(SIGHUP, SIG_IGN);
// Detach session
$control->info()->detachSession();
// Reset umask
@umask($this->getOption('umask'));
// Update work directory
@chdir($this->getOption('work_dir'));
// Close file descriptors
fclose(STDIN);
fclose(STDOUT);
fclose(STDERR);
// Define process owner
if (null !== ($userId = $this->getOption('user_id'))) {
$control->info()->setUserId($userId);
}
// Define process group
if (null !== ($groupId = $this->getOption('group_id'))) {
$control->info()->setGroupId($groupId);
}
// Create new file descriptors
$context->stdin = fopen($this->getOption('stdin'), 'r');
$context->stdout = fopen($this->getOption('stdout'), 'wb');
$context->stderr = fopen($this->getOption('stderr'), 'wb');
// Create pidfile
$context->pidfile->initialize();
}
