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bpo-20891: Py_Initialize() now creates the GIL (#4700)

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The GIL is no longer created "on demand" to fix a race condition when
PyGILState_Ensure() is called in a non-Python thread.
This commit is contained in:
Victor Stinner 2018-01-29 11:57:45 +01:00 • committed by GitHub
parent 8997f9cd1a
commit 2914bb32e2
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4 changed files with 43 additions and 52 deletions
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Python/pylifecycle.c
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@ -681,9 +681,13 @@ _Py_InitializeCore(const _PyCoreConfig *core_config)
Instead we destroy the previously created GIL here, which ensures
that we can call Py_Initialize / Py_FinalizeEx multiple times. */
_PyEval_FiniThreads();
/* Auto-thread-state API */
_PyGILState_Init(interp, tstate);
/* Create the GIL */
PyEval_InitThreads();
_Py_ReadyTypes();
if (!_PyFrame_Init())