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bpo-35081: Cleanup pystate.c and pystate.h (GH-10240)

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* Remove _PyThreadState_Current
* Replace GET_TSTATE() with PyThreadState_GET()
* Replace GET_INTERP_STATE() with _PyInterpreterState_GET_UNSAFE()
* Replace direct access to _PyThreadState_Current with
  PyThreadState_GET()
* Replace _PyThreadState_Current with
  _PyRuntime.gilstate.tstate_current
* Rename SET_TSTATE() to _PyThreadState_SET(), name more
  consistent with _PyThreadState_GET()
* Update outdated comments
This commit is contained in:
Victor Stinner 2018-10-30 15:13:17 +01:00 • committed by GitHub
parent 3c09dca4b5
commit 9204fb8623
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4 changed files with 26 additions and 31 deletions
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7
Include/pystate.h
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@ -208,8 +208,8 @@ typedef struct _ts {
* if the thread holds the last reference to the lock, decref'ing the
* lock will delete the lock, and that may trigger arbitrary Python code
* if there's a weakref, with a callback, to the lock. But by this time
* _PyThreadState_Current is already NULL, so only the simplest of C code
* can be allowed to run (in particular it must not be possible to
* _PyRuntime.gilstate.tstate_current is already NULL, so only the simplest
* of C code can be allowed to run (in particular it must not be possible to
* release the GIL).
* So instead of holding the lock directly, the tstate holds a weakref to
* the lock: that's the value of on_delete_data below. Decref'ing a
@ -307,9 +307,8 @@ PyAPI_FUNC(int) PyThreadState_SetAsyncExc(unsigned long, PyObject *);
/* Assuming the current thread holds the GIL, this is the
PyThreadState for the current thread. */
#ifdef Py_BUILD_CORE
# define _PyThreadState_Current _PyRuntime.gilstate.tstate_current
# define PyThreadState_GET() \
((PyThreadState*)_Py_atomic_load_relaxed(&_PyThreadState_Current))
((PyThreadState*)_Py_atomic_load_relaxed(&_PyRuntime.gilstate.tstate_current))
#else
# define PyThreadState_GET() PyThreadState_Get()
#endif