Method reap_linkee

src/tests/process_tests.cpp:887–902

Helper method to quickly reap the `linkee`. Subprocesses are reaped (via a non-blocking `waitpid` call) on a regular interval. We can speed up the internal reaper by advancing the clock.

  // a regular interval. We can speed up the internal reaper by
  // advancing the clock.
  void reap_linkee()
  {
    if (linkee.isSome()) {
      bool paused = Clock::paused();

      Clock::pause();
      while (linkee->status().isPending()) {
        Clock::advance(process::MAX_REAP_INTERVAL());
        Clock::settle();
      }

      if (!paused) {
        Clock::resume();
      }
    }
  }

  void TearDown() override
  {