Message296593
test.test_threading.ConditionTests.test_notify() tests the threading._Condition.
threading._Condition uses internally a threading._RLock.
threading._RLock uses an internal lock created with thread.allocate_lock().
thread.allocate_lock() calls internally PyThread_allocate_lock(). On my Linux (Fedora 25) and FreeBSD (FreeBSD 11 VM) machines, PyThread_allocate_lock() calls sem_init(): POSIX pthread semaphores.
In Python 3, RLock was implemented in C for speed (the new Python 3.0 io module was slow because of RLock performance): see bpo-3001.
I know at least one race condition in Python 2.7 RLock: bpo-13697, RLock bug with signals. |
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2017-06-21 22:38:43 | vstinner | set | recipients:
+ vstinner |
2017-06-21 22:38:43 | vstinner | set | messageid: <1498084723.44.0.281135325364.issue30727@psf.upfronthosting.co.za> |
2017-06-21 22:38:43 | vstinner | link | issue30727 messages |
2017-06-21 22:38:43 | vstinner | create | |
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