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Add more checks on the GIL

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Issue #10915, #15751, #26558:

* PyGILState_Check() now returns 1 (success) before the creation of the GIL and
  after the destruction of the GIL. It allows to use the function early in
  Python initialization and late in Python finalization.
* Add a flag to disable PyGILState_Check(). Disable PyGILState_Check() when
  Py_NewInterpreter() is called
* Add assert(PyGILState_Check()) to: _Py_dup(), _Py_fstat(), _Py_read()
  and _Py_write()
This commit is contained in:
Victor Stinner 2016-03-14 22:07:55 +01:00
parent 08572f68a9
commit 8a1be61849
5 changed files with 52 additions and 5 deletions
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5
Python/pylifecycle.c
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@ -692,6 +692,7 @@ Py_FinalizeEx(void)
/* Delete current thread. After this, many C API calls become crashy. */
PyThreadState_Swap(NULL);
PyInterpreterState_Delete(interp);
#ifdef Py_TRACE_REFS
@ -743,6 +744,10 @@ Py_NewInterpreter(void)
if (!initialized)
Py_FatalError("Py_NewInterpreter: call Py_Initialize first");
/* Issue #10915, #15751: The GIL API doesn't work with multiple
interpreters: disable PyGILState_Check(). */
_PyGILState_check_enabled = 0;
interp = PyInterpreterState_New();
if (interp == NULL)
return NULL;