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bpo-40514: Drop EXPERIMENTAL_ISOLATED_SUBINTERPRETERS (gh-93185)

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This was added for bpo-40514 (gh-84694) to test out a per-interpreter GIL. However, it has since proven unnecessary to keep the experiment in the repo. (It can be done as a branch in a fork like normal.) So here we are removing:

* the configure option
* the macro
* the code enabled by the macro
This commit is contained in:
Eric Snow 2022-05-27 17:38:01 -06:00 • committed by GitHub
parent e6a57678ca
commit caa279d6fd
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GPG key ID: 4AEE18F83AFDEB23
18 changed files with 9 additions and 233 deletions
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55
Python/ceval.c
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@ -352,21 +352,6 @@ _Py_FatalError_TstateNULL(const char *func)
"(the current Python thread state is NULL)");
}
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
int
_PyEval_ThreadsInitialized(PyInterpreterState *interp)
{
return gil_created(&interp->ceval.gil);
}
int
PyEval_ThreadsInitialized(void)
{
// Fatal error if there is no current interpreter
PyInterpreterState *interp = PyInterpreterState_Get();
return _PyEval_ThreadsInitialized(interp);
}
#else
int
_PyEval_ThreadsInitialized(_PyRuntimeState *runtime)
{
@ -379,25 +364,18 @@ PyEval_ThreadsInitialized(void)
_PyRuntimeState *runtime = &_PyRuntime;
return _PyEval_ThreadsInitialized(runtime);
}
#endif
PyStatus
_PyEval_InitGIL(PyThreadState *tstate)
{
#ifndef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
if (!_Py_IsMainInterpreter(tstate->interp)) {
/* Currently, the GIL is shared by all interpreters,
and only the main interpreter is responsible to create
and destroy it. */
return _PyStatus_OK();
}
#endif
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
struct _gil_runtime_state *gil = &tstate->interp->ceval.gil;
#else
struct _gil_runtime_state *gil = &tstate->interp->runtime->ceval.gil;
#endif
assert(!gil_created(gil));
PyThread_init_thread();
@ -412,20 +390,14 @@ _PyEval_InitGIL(PyThreadState *tstate)
void
_PyEval_FiniGIL(PyInterpreterState *interp)
{
#ifndef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
if (!_Py_IsMainInterpreter(interp)) {
/* Currently, the GIL is shared by all interpreters,
and only the main interpreter is responsible to create
and destroy it. */
return;
}
#endif
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
struct _gil_runtime_state *gil = &interp->ceval.gil;
#else
struct _gil_runtime_state *gil = &interp->runtime->ceval.gil;
#endif
if (!gil_created(gil)) {
/* First Py_InitializeFromConfig() call: the GIL doesn't exist
yet: do nothing. */
@ -489,13 +461,9 @@ PyEval_AcquireThread(PyThreadState *tstate)
take_gil(tstate);
struct _gilstate_runtime_state *gilstate = &tstate->interp->runtime->gilstate;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
(void)_PyThreadState_Swap(gilstate, tstate);
#else
if (_PyThreadState_Swap(gilstate, tstate) != NULL) {
Py_FatalError("non-NULL old thread state");
}
#endif
}
void
@ -522,11 +490,7 @@ _PyEval_ReInitThreads(PyThreadState *tstate)
{
_PyRuntimeState *runtime = tstate->interp->runtime;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
struct _gil_runtime_state *gil = &tstate->interp->ceval.gil;
#else
struct _gil_runtime_state *gil = &runtime->ceval.gil;
#endif
if (!gil_created(gil)) {
return _PyStatus_OK();
}
@ -558,21 +522,12 @@ PyThreadState *
PyEval_SaveThread(void)
{
_PyRuntimeState *runtime = &_PyRuntime;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
PyThreadState *old_tstate = _PyThreadState_GET();
PyThreadState *tstate = _PyThreadState_Swap(&runtime->gilstate, old_tstate);
#else
PyThreadState *tstate = _PyThreadState_Swap(&runtime->gilstate, NULL);
#endif
_Py_EnsureTstateNotNULL(tstate);
struct _ceval_runtime_state *ceval = &runtime->ceval;
struct _ceval_state *ceval2 = &tstate->interp->ceval;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
assert(gil_created(&ceval2->gil));
#else
assert(gil_created(&ceval->gil));
#endif
drop_gil(ceval, ceval2, tstate);
return tstate;
}
@ -836,9 +791,7 @@ Py_MakePendingCalls(void)
void
_PyEval_InitRuntimeState(struct _ceval_runtime_state *ceval)
{
#ifndef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
_gil_initialize(&ceval->gil);
#endif
}
void
@ -848,10 +801,6 @@ _PyEval_InitState(struct _ceval_state *ceval, PyThread_type_lock pending_lock)
assert(pending->lock == NULL);
pending->lock = pending_lock;
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
_gil_initialize(&ceval->gil);
#endif
}
void
@ -1267,13 +1216,9 @@ eval_frame_handle_pending(PyThreadState *tstate)
take_gil(tstate);
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
(void)_PyThreadState_Swap(&runtime->gilstate, tstate);
#else
if (_PyThreadState_Swap(&runtime->gilstate, tstate) != NULL) {
Py_FatalError("orphan tstate");
}
#endif
}
/* Check for asynchronous exception. */