STINNER Victor <[email protected]> added the comment:
interrupted_lock.py: test threading.Lock.acquire(timeout=1.0) with SIGALRM sent
every 1 ms (so up to 1000 times in total). Example:
haypo@selma$ ./python interrupted_lock.py
acquire(timeout=1.0) took 1.0 seconds and got 1000 signals
Oh, in fact, threading.Lock.acquire(timeout=1.0) already recomputes the timeout
when interrupted.
In Python stdlib, PyThread_acquire_lock_timed() is only called from one place
with intr_flag=0: faulthandler watchdog thread, but this thread blocks all
signals:
/* we don't want to receive any signal */
sigfillset(&set);
pthread_sigmask(SIG_SETMASK, &set, NULL);
----------
Added file: https://bugs.python.org/file47233/interrupted_lock.py
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<https://bugs.python.org/issue30768>
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