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bpo-40513: Per-interpreter GIL (GH-19943)

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In the experimental isolated subinterpreters build mode, the GIL is
now per-interpreter.

Move gil from _PyRuntimeState.ceval to PyInterpreterState.ceval.

new_interpreter() always get the config from the main interpreter.
This commit is contained in:
Victor Stinner 2020-05-05 20:27:47 +02:00 • committed by GitHub
parent 0dd5e7a718
commit 7be4e350aa
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 82 additions and 5 deletions
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24
Python/ceval_gil.h
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@ -144,7 +144,11 @@ static void
drop_gil(struct _ceval_runtime_state *ceval, struct _ceval_state *ceval2,
PyThreadState *tstate)
{
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
struct _gil_runtime_state *gil = &ceval2->gil;
#else
struct _gil_runtime_state *gil = &ceval->gil;
#endif
if (!_Py_atomic_load_relaxed(&gil->locked)) {
Py_FatalError("drop_gil: GIL is not locked");
}
@ -228,7 +232,11 @@ take_gil(PyThreadState *tstate)
PyInterpreterState *interp = tstate->interp;
struct _ceval_runtime_state *ceval = &interp->runtime->ceval;
struct _ceval_state *ceval2 = &interp->ceval;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
struct _gil_runtime_state *gil = &ceval2->gil;
#else
struct _gil_runtime_state *gil = &ceval->gil;
#endif
/* Check that _PyEval_InitThreads() was called to create the lock */
assert(gil_created(gil));
@ -320,10 +328,22 @@ _ready:
void _PyEval_SetSwitchInterval(unsigned long microseconds)
{
_PyRuntime.ceval.gil.interval = microseconds;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
PyInterpreterState *interp = PyInterpreterState_Get();
struct _gil_runtime_state *gil = &interp->ceval.gil;
#else
struct _gil_runtime_state *gil = &_PyRuntime.ceval.gil;
#endif
gil->interval = microseconds;
}
unsigned long _PyEval_GetSwitchInterval()
{
return _PyRuntime.ceval.gil.interval;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
PyInterpreterState *interp = PyInterpreterState_Get();
struct _gil_runtime_state *gil = &interp->ceval.gil;
#else
struct _gil_runtime_state *gil = &_PyRuntime.ceval.gil;
#endif
return gil->interval;
}