2012-09-29 11:40:38 -07:00
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import signal, subprocess, sys, time
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2010-12-14 14:38:00 +00:00
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# On Linux this causes os.waitpid to fail with OSError as the OS has already
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# reaped our child process. The wait() passing the OSError on to the caller
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# and causing us to exit with an error is what we are testing against.
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2010-12-14 18:18:49 +00:00
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signal.signal(signal.SIGCHLD, signal.SIG_IGN)
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2010-12-14 14:38:00 +00:00
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subprocess.Popen([sys.executable, '-c', 'print("albatross")']).wait()
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2012-09-29 11:40:38 -07:00
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# Also ensure poll() handles an errno.ECHILD appropriately.
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p = subprocess.Popen([sys.executable, '-c', 'print("albatross")'])
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num_polls = 0
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while p.poll() is None:
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# Waiting for the process to finish.
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time.sleep(0.01) # Avoid being a CPU busy loop.
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num_polls += 1
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if num_polls > 3000:
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raise RuntimeError('poll should have returned 0 within 30 seconds')
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