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bpo-40513: _xxsubinterpreters.run_string() releases the GIL (GH-19944)

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In the experimental isolated subinterpreters build mode,
_xxsubinterpreters.run_string() now releases the GIL.
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Victor Stinner 2020-05-05 20:33:06 +02:00 • committed by GitHub
parent 7be4e350aa
commit fb2c7c4afb
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1 changed files with 15 additions and 0 deletions
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15
Modules/_xxsubinterpretersmodule.c
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@ -1939,6 +1939,20 @@ _run_script_in_interpreter(PyInterpreterState *interp, const char *codestr,
return -1; return -1;
} }
#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
// Switch to interpreter.
PyThreadState *new_tstate = PyInterpreterState_ThreadHead(interp);
PyThreadState *save1 = PyEval_SaveThread();
(void)PyThreadState_Swap(new_tstate);
// Run the script.
_sharedexception *exc = NULL;
int result = _run_script(interp, codestr, shared, &exc);
// Switch back.
PyEval_RestoreThread(save1);
#else
// Switch to interpreter. // Switch to interpreter.
PyThreadState *save_tstate = NULL; PyThreadState *save_tstate = NULL;
if (interp != PyInterpreterState_Get()) { if (interp != PyInterpreterState_Get()) {
@ -1956,6 +1970,7 @@ _run_script_in_interpreter(PyInterpreterState *interp, const char *codestr,
if (save_tstate != NULL) { if (save_tstate != NULL) {
PyThreadState_Swap(save_tstate); PyThreadState_Swap(save_tstate);
} }
#endif
// Propagate any exception out to the caller. // Propagate any exception out to the caller.
if (exc != NULL) { if (exc != NULL) {