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gh-99113: Share the GIL via PyInterpreterState.ceval.gil (gh-104203)

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In preparation for a per-interpreter GIL, we add PyInterpreterState.ceval.gil, set it to the shared GIL for each interpreter, and use that rather than using _PyRuntime.ceval.gil directly.  Note that _PyRuntime.ceval.gil is still the actual GIL.
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Eric Snow 2023-05-05 13:23:00 -06:00 • committed by GitHub
parent d00d942149
commit 55671fe047
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5 changed files with 65 additions and 40 deletions
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2
Include/internal/pycore_ceval.h
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@ -96,7 +96,7 @@ _PyEval_Vector(PyThreadState *tstate,
PyObject* const* args, size_t argcount,
PyObject *kwnames);
extern int _PyEval_ThreadsInitialized(struct pyruntimestate *runtime);
extern int _PyEval_ThreadsInitialized(void);
extern PyStatus _PyEval_InitGIL(PyThreadState *tstate);
extern void _PyEval_FiniGIL(PyInterpreterState *interp);

3
Include/internal/pycore_ceval_state.h
View file

@ -49,6 +49,8 @@ struct _ceval_runtime_state {
the main thread of the main interpreter can handle signals: see
_Py_ThreadCanHandleSignals(). */
_Py_atomic_int signals_pending;
/* This is (only) used indirectly through PyInterpreterState.ceval.gil. */
struct _gil_runtime_state gil;
};
@ -83,6 +85,7 @@ struct _pending_calls {
struct _ceval_state {
int recursion_limit;
struct _gil_runtime_state *gil;
/* This single variable consolidates all requests to break out of
the fast path in the eval loop. */
_Py_atomic_int eval_breaker;