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gh-99113: A Per-Interpreter GIL! (gh-104210)

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This is the culmination of PEP 684 (and of my 8-year long multi-core Python project)!

Each subinterpreter may now be created with its own GIL (via Py_NewInterpreterFromConfig()).  If not so configured then the interpreter will share with the main interpreter--the status quo since subinterpreters were added decades ago.  The main interpreter always has its own GIL and subinterpreters from Py_NewInterpreter() will always share with the main interpreter.
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Eric Snow 2023-05-08 13:15:09 -06:00 • committed by GitHub
parent 942482c8e6
commit 5c9ee498c6
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7 changed files with 24 additions and 52 deletions
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4
Python/pystate.c
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@ -425,8 +425,6 @@ init_runtime(_PyRuntimeState *runtime,
runtime->open_code_userdata = open_code_userdata;
runtime->audit_hook_head = audit_hook_head;
_PyEval_InitRuntimeState(&runtime->ceval);
PyPreConfig_InitPythonConfig(&runtime->preconfig);
PyThread_type_lock *lockptrs[NUMLOCKS] = {
@ -682,7 +680,7 @@ init_interpreter(PyInterpreterState *interp,
memcpy(&interp->obmalloc.pools.used, temp, sizeof(temp));
}
_PyEval_InitState(&interp->ceval, pending_lock);
_PyEval_InitState(interp, pending_lock);
_PyGC_InitState(&interp->gc);
PyConfig_InitPythonConfig(&interp->config);
_PyType_InitCache(interp);