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| -rw-r--r-- | Misc/NEWS | 5 | ||||
| -rw-r--r-- | Python/pystate.c | 5 |
2 files changed, 10 insertions, 0 deletions
@@ -10,6 +10,11 @@ Release date: 2014-01-05 Core and Builtins ----------------- +- Issue #19576: PyGILState_Ensure() now initializes threads. At startup, Python + has no concrete GIL. If PyGILState_Ensure() is called from a new thread for + the first time and PyEval_InitThreads() was not called yet, a GIL needs to be + created. + - Issue #17576: Deprecation warning emitted now when __int__() or __index__() return not int instance. diff --git a/Python/pystate.c b/Python/pystate.c index 6be71de..a56e308 100644 --- a/Python/pystate.c +++ b/Python/pystate.c @@ -771,6 +771,11 @@ PyGILState_Ensure(void) assert(autoInterpreterState); /* Py_Initialize() hasn't been called! */ tcur = (PyThreadState *)PyThread_get_key_value(autoTLSkey); if (tcur == NULL) { + /* At startup, Python has no concrete GIL. If PyGILState_Ensure() is + called from a new thread for the first time, we need the create the + GIL. */ + PyEval_InitThreads(); + /* Create a new thread state for this thread */ tcur = PyThreadState_New(autoInterpreterState); if (tcur == NULL) |