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gh-99113: Add PyInterpreterConfig.own_gil (gh-104204)

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We also add PyInterpreterState.ceval.own_gil to record if the interpreter actually has its own GIL.

Note that for now we don't actually respect own_gil; all interpreters still share the one GIL.  However, PyInterpreterState.ceval.own_gil does reflect PyInterpreterConfig.own_gil.  That lie is a temporary one that we will fix when the GIL really becomes per-interpreter.
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Eric Snow 2023-05-05 15:59:20 -06:00 • committed by GitHub
parent 66558d2a16
commit f3e7eb48f8
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11 changed files with 79 additions and 18 deletions
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12
Python/pylifecycle.c
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@ -585,7 +585,7 @@ init_interp_settings(PyInterpreterState *interp,
static PyStatus
init_interp_create_gil(PyThreadState *tstate)
init_interp_create_gil(PyThreadState *tstate, int own_gil)
{
PyStatus status;
@ -600,7 +600,7 @@ init_interp_create_gil(PyThreadState *tstate)
}
/* Create the GIL and take it */
status = _PyEval_InitGIL(tstate);
status = _PyEval_InitGIL(tstate, own_gil);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
@ -632,7 +632,9 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
return status;
}
const PyInterpreterConfig config = _PyInterpreterConfig_LEGACY_INIT;
PyInterpreterConfig config = _PyInterpreterConfig_LEGACY_INIT;
// The main interpreter always has its own GIL.
config.own_gil = 1;
status = init_interp_settings(interp, &config);
if (_PyStatus_EXCEPTION(status)) {
return status;
@ -645,7 +647,7 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
_PyThreadState_Bind(tstate);
(void) PyThreadState_Swap(tstate);
status = init_interp_create_gil(tstate);
status = init_interp_create_gil(tstate, config.own_gil);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
@ -2047,7 +2049,7 @@ new_interpreter(PyThreadState **tstate_p, const PyInterpreterConfig *config)
goto error;
}
status = init_interp_create_gil(tstate);
status = init_interp_create_gil(tstate, config->own_gil);
if (_PyStatus_EXCEPTION(status)) {
goto error;
}