private function doSignal($signal, $throwException)
{
if (null === ($pid = $this->getPid())) {
if ($throwException) {
throw new LogicException('Can not send signal on a non running process.');
}
return false;
}
if ('\\' === DIRECTORY_SEPARATOR) {
exec(sprintf('taskkill /F /T /PID %d 2>&1', $pid), $output, $exitCode);
if ($exitCode && $this->isRunning()) {
if ($throwException) {
throw new RuntimeException(sprintf('Unable to kill the process (%s).', implode(' ', $output)));
}
return false;
}
} else {
if (!$this->enhanceSigchildCompatibility || !$this->isSigchildEnabled()) {
$ok = @proc_terminate($this->process, $signal);
} elseif (function_exists('posix_kill')) {
$ok = @posix_kill($pid, $signal);
} elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), array(2 => array('pipe', 'w')), $pipes)) {
$ok = false === fgets($pipes[2]);
}
if (!$ok) {
if ($throwException) {
throw new RuntimeException(sprintf('Error while sending signal `%s`.', $signal));
}
return false;
}
}
$this->latestSignal = (int) $signal;
$this->fallbackStatus['signaled'] = true;
$this->fallbackStatus['exitcode'] = -1;
$this->fallbackStatus['termsig'] = $this->latestSignal;
return true;
}