message: Add setWaitTimeout -1.
diff: @@ -6,6 +6,7 @@ swoole_server: addProcess with event wait
  <?php
  require __DIR__ . '/../include/bootstrap.php';
  $pm = new ProcessManager;
  +$pm->setWaitTimeout(-1);
  $pm->parentFunc = function () use ($pm) {
  $pm->kill();
  };
  @@ -23,7 +24,6 @@ $pm->childFunc = function () use ($pm) {
  swoole_timer_tick(100, function (int $id) use (&$i) {
  global $pm;
  if (++$i === 10) {
  - usleep(100 * 1000);
  swoole_timer_clear($id);
  $pm->wakeup();
  }
  