Message413165
I've been able locally to reproduce the test_subprocess hang. The responsible function is subprocess.run(). The test case, test_timeout(), uses a small timeout value (0.0001), which, when given enough load, can cause the run() call to hang.
A judicious use of prints in subprocess.py, reveals that the timeout passed to wait() ends up being negative. That value, once cast to a DWORD, ultimately causes a very long wait (0xfffffff2, in my testing).
It does seem that only the Windows Popen._wait() cannot handle negative timeout values, so the fix should be as simple as coercing the timeout values to >= 0. |
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Date |
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2022-02-13 04:29:46 | jkloth | set | recipients:
+ jkloth, vstinner, eryksun |
2022-02-13 04:29:46 | jkloth | set | messageid: <1644726586.19.0.306762647891.issue46716@roundup.psfhosted.org> |
2022-02-13 04:29:46 | jkloth | link | issue46716 messages |
2022-02-13 04:29:46 | jkloth | create | |
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