| import signal, subprocess, sys, time |
| # On Linux this causes os.waitpid to fail with OSError as the OS has already |
| # reaped our child process. The wait() passing the OSError on to the caller |
| # and causing us to exit with an error is what we are testing against. |
| signal.signal(signal.SIGCHLD, signal.SIG_IGN) |
| subprocess.Popen([sys.executable, '-c', 'print("albatross")']).wait() |
| # Also ensure poll() handles an errno.ECHILD appropriately. |
| p = subprocess.Popen([sys.executable, '-c', 'print("albatross")']) |
| num_polls = 0 |
| while p.poll() is None: |
| # Waiting for the process to finish. |
| time.sleep(0.01) # Avoid being a CPU busy loop. |
| num_polls += 1 |
| if num_polls > 3000: |
| raise RuntimeError('poll should have returned 0 within 30 seconds') |
