/**
* Blocks until call is complete.
*
* @throws \Exception If this function is called before start()
* @throws \RuntimeException
*
* @return string
*/
public function wait()
{
if ($this->processAsync == null) {
throw new \Exception('You must run `start` before running `wait`');
}
// blocks here until process completes
$this->processAsync->wait();
if (!$this->processAsync->isSuccessful()) {
throw new \RuntimeException($this->processAsync->getErrorOutput());
}
return $this->processAsync->getOutput();
}
/**
* start the same number processes and kill the old sub process
* just like nginx -s reload
* this method will block until all the old process exit;
*
* @param bool $block
*/
public function reload($block = true)
{
$old_process = $this->processes;
for ($i = 0; $i < $this->max; $i++) {
$process = new Process($this->runnable);
$process->start();
$this->processes[$process->getPid()] = $process;
}
foreach ($old_process as $process) {
$process->shutdown();
$process->wait($block);
unset($this->processes[$process->getPid()]);
}
}