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bpo-42745: Make the type cache per-interpreter (GH-23947)

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Make the type attribute lookup cache per-interpreter.

Add private _PyType_InitCache() function, called by PyInterpreterState_New().

Continue to share next_version_tag between interpreters, since static
types are still shared by interpreters.

Remove MCACHE macro: the cache is no longer disabled if the
EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.
This commit is contained in:
Victor Stinner 2020-12-26 01:45:43 +01:00 • committed by GitHub
parent 77fde8dc16
commit 4101018488
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7 changed files with 136 additions and 90 deletions
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Python/pystate.c
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@ -4,6 +4,7 @@
#include "Python.h"
#include "pycore_ceval.h"
#include "pycore_initconfig.h"
#include "pycore_object.h" // _PyType_InitCache()
#include "pycore_pyerrors.h"
#include "pycore_pylifecycle.h"
#include "pycore_pymem.h" // _PyMem_SetDefaultAllocator()
@ -223,6 +224,7 @@ PyInterpreterState_New(void)
_PyGC_InitState(&interp->gc);
PyConfig_InitPythonConfig(&interp->config);
_PyType_InitCache(interp);
interp->eval_frame = _PyEval_EvalFrameDefault;
#ifdef HAVE_DLOPEN