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[3.12] gh-100227: Lock Around Modification of the Global Allocators State (gh-105516) (gh-105532)

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The risk of a race with this state is relatively low, but we play it safe anyway. We do avoid using the lock in performance-sensitive cases where the risk of a race is very, very low.
(cherry picked from commit 68dfa49627)

Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
This commit is contained in:
Miss Islington (bot) 2023-06-08 15:35:53 -07:00 • committed by GitHub
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commit 77c03a3b72
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5 changed files with 358 additions and 228 deletions
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@ -1702,7 +1702,7 @@
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@ -8477,63 +8477,63 @@
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@ -13450,10 +13450,10 @@
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<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1114' column='1'/>
<function-decl name='_PyInterpreterState_RequiresIDRef' mangled-name='_PyInterpreterState_RequiresIDRef' filepath='Python/pystate.c' line='1115' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_RequiresIDRef'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1115' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyInterpreterState_RequireIDRef' mangled-name='_PyInterpreterState_RequireIDRef' filepath='Python/pystate.c' line='1120' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_RequireIDRef'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1120' column='1'/>
<parameter type-id='type-id-8' name='required' filepath='Python/pystate.c' line='1120' column='1'/>
<function-decl name='_PyInterpreterState_RequireIDRef' mangled-name='_PyInterpreterState_RequireIDRef' filepath='Python/pystate.c' line='1121' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_RequireIDRef'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1121' column='1'/>
<parameter type-id='type-id-8' name='required' filepath='Python/pystate.c' line='1121' column='1'/>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='_PyInterpreterState_GetMainModule' mangled-name='_PyInterpreterState_GetMainModule' filepath='Python/pystate.c' line='1126' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetMainModule'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1126' column='1'/>
<function-decl name='_PyInterpreterState_GetMainModule' mangled-name='_PyInterpreterState_GetMainModule' filepath='Python/pystate.c' line='1127' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetMainModule'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1127' column='1'/>
<return type-id='type-id-2'/>
</function-decl>
<function-decl name='PyInterpreterState_GetDict' mangled-name='PyInterpreterState_GetDict' filepath='Python/pystate.c' line='1137' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_GetDict'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1137' column='1'/>
<function-decl name='PyInterpreterState_GetDict' mangled-name='PyInterpreterState_GetDict' filepath='Python/pystate.c' line='1138' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_GetDict'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1138' column='1'/>
<return type-id='type-id-2'/>
</function-decl>
<function-decl name='PyThreadState_New' mangled-name='PyThreadState_New' filepath='Python/pystate.c' line='1379' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_New'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1379' column='1'/>
<function-decl name='PyThreadState_New' mangled-name='PyThreadState_New' filepath='Python/pystate.c' line='1380' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_New'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1380' column='1'/>
<return type-id='type-id-177'/>
</function-decl>
<function-decl name='_PyThreadState_Prealloc' mangled-name='_PyThreadState_Prealloc' filepath='Python/pystate.c' line='1402' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_Prealloc'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1402' column='1'/>
<function-decl name='_PyThreadState_Prealloc' mangled-name='_PyThreadState_Prealloc' filepath='Python/pystate.c' line='1403' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_Prealloc'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='1403' column='1'/>
<return type-id='type-id-177'/>
</function-decl>
<function-decl name='_PyThreadState_Init' mangled-name='_PyThreadState_Init' filepath='Python/pystate.c' line='1410' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_Init'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1410' column='1'/>
<function-decl name='_PyThreadState_Init' mangled-name='_PyThreadState_Init' filepath='Python/pystate.c' line='1411' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_Init'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1411' column='1'/>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='_PyThreadState_DeleteCurrent' mangled-name='_PyThreadState_DeleteCurrent' filepath='Python/pystate.c' line='1572' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_DeleteCurrent'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1572' column='1'/>
<function-decl name='_PyThreadState_DeleteCurrent' mangled-name='_PyThreadState_DeleteCurrent' filepath='Python/pystate.c' line='1573' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_DeleteCurrent'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1573' column='1'/>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='PyThreadState_DeleteCurrent' mangled-name='PyThreadState_DeleteCurrent' filepath='Python/pystate.c' line='1582' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_DeleteCurrent'>
<function-decl name='PyThreadState_DeleteCurrent' mangled-name='PyThreadState_DeleteCurrent' filepath='Python/pystate.c' line='1583' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_DeleteCurrent'>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='_PyThreadState_GetDict' mangled-name='_PyThreadState_GetDict' filepath='Python/pystate.c' line='1713' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_GetDict'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1713' column='1'/>
<function-decl name='_PyThreadState_GetDict' mangled-name='_PyThreadState_GetDict' filepath='Python/pystate.c' line='1714' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThreadState_GetDict'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1714' column='1'/>
<return type-id='type-id-2'/>
</function-decl>
<function-decl name='PyThreadState_GetInterpreter' mangled-name='PyThreadState_GetInterpreter' filepath='Python/pystate.c' line='1738' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetInterpreter'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1738' column='1'/>
<function-decl name='PyThreadState_GetInterpreter' mangled-name='PyThreadState_GetInterpreter' filepath='Python/pystate.c' line='1739' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetInterpreter'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1739' column='1'/>
<return type-id='type-id-20'/>
</function-decl>
<function-decl name='PyThreadState_GetID' mangled-name='PyThreadState_GetID' filepath='Python/pystate.c' line='1762' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetID'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1762' column='1'/>
<function-decl name='PyThreadState_GetID' mangled-name='PyThreadState_GetID' filepath='Python/pystate.c' line='1763' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_GetID'>
<parameter type-id='type-id-177' name='tstate' filepath='Python/pystate.c' line='1763' column='1'/>
<return type-id='type-id-117'/>
</function-decl>
<function-decl name='PyThreadState_SetAsyncExc' mangled-name='PyThreadState_SetAsyncExc' filepath='Python/pystate.c' line='1816' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_SetAsyncExc'>
<parameter type-id='type-id-28' name='id' filepath='Python/pystate.c' line='1816' column='1'/>
<parameter type-id='type-id-2' name='exc' filepath='Python/pystate.c' line='1816' column='1'/>
<function-decl name='PyThreadState_SetAsyncExc' mangled-name='PyThreadState_SetAsyncExc' filepath='Python/pystate.c' line='1817' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyThreadState_SetAsyncExc'>
<parameter type-id='type-id-28' name='id' filepath='Python/pystate.c' line='1817' column='1'/>
<parameter type-id='type-id-2' name='exc' filepath='Python/pystate.c' line='1817' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='PyInterpreterState_Main' mangled-name='PyInterpreterState_Main' filepath='Python/pystate.c' line='1959' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_Main'>
<function-decl name='PyInterpreterState_Main' mangled-name='PyInterpreterState_Main' filepath='Python/pystate.c' line='1960' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='PyInterpreterState_Main'>
<return type-id='type-id-20'/>
</function-decl>
<function-decl name='_PyThread_CurrentFrames' mangled-name='_PyThread_CurrentFrames' filepath='Python/pystate.c' line='1990' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThread_CurrentFrames'>
<function-decl name='_PyThread_CurrentFrames' mangled-name='_PyThread_CurrentFrames' filepath='Python/pystate.c' line='1991' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThread_CurrentFrames'>
<return type-id='type-id-2'/>
</function-decl>
<function-decl name='_PyThread_CurrentExceptions' mangled-name='_PyThread_CurrentExceptions' filepath='Python/pystate.c' line='2051' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThread_CurrentExceptions'>
<function-decl name='_PyThread_CurrentExceptions' mangled-name='_PyThread_CurrentExceptions' filepath='Python/pystate.c' line='2052' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyThread_CurrentExceptions'>
<return type-id='type-id-2'/>
</function-decl>
<function-decl name='_PyGILState_GetInterpreterStateUnsafe' mangled-name='_PyGILState_GetInterpreterStateUnsafe' filepath='Python/pystate.c' line='2169' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyGILState_GetInterpreterStateUnsafe'>
<function-decl name='_PyGILState_GetInterpreterStateUnsafe' mangled-name='_PyGILState_GetInterpreterStateUnsafe' filepath='Python/pystate.c' line='2170' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyGILState_GetInterpreterStateUnsafe'>
<return type-id='type-id-20'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_Init' mangled-name='_PyCrossInterpreterData_Init' filepath='Python/pystate.c' line='2332' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Init'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2332' column='1'/>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2333' column='1'/>
<parameter type-id='type-id-22' name='shared' filepath='Python/pystate.c' line='2334' column='1'/>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2334' column='1'/>
<parameter type-id='type-id-782' name='new_object' filepath='Python/pystate.c' line='2335' column='1'/>
<function-decl name='_PyCrossInterpreterData_Init' mangled-name='_PyCrossInterpreterData_Init' filepath='Python/pystate.c' line='2333' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Init'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2333' column='1'/>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2334' column='1'/>
<parameter type-id='type-id-22' name='shared' filepath='Python/pystate.c' line='2335' column='1'/>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2335' column='1'/>
<parameter type-id='type-id-782' name='new_object' filepath='Python/pystate.c' line='2336' column='1'/>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_InitWithSize' mangled-name='_PyCrossInterpreterData_InitWithSize' filepath='Python/pystate.c' line='2354' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_InitWithSize'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2354' column='1'/>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2355' column='1'/>
<parameter type-id='type-id-1500' name='size' filepath='Python/pystate.c' line='2356' column='1'/>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2356' column='1'/>
<parameter type-id='type-id-782' name='new_object' filepath='Python/pystate.c' line='2357' column='1'/>
<function-decl name='_PyCrossInterpreterData_InitWithSize' mangled-name='_PyCrossInterpreterData_InitWithSize' filepath='Python/pystate.c' line='2355' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_InitWithSize'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2355' column='1'/>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2356' column='1'/>
<parameter type-id='type-id-1500' name='size' filepath='Python/pystate.c' line='2357' column='1'/>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2357' column='1'/>
<parameter type-id='type-id-782' name='new_object' filepath='Python/pystate.c' line='2358' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_Clear' mangled-name='_PyCrossInterpreterData_Clear' filepath='Python/pystate.c' line='2373' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Clear'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2373' column='1'/>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2374' column='1'/>
<function-decl name='_PyCrossInterpreterData_Clear' mangled-name='_PyCrossInterpreterData_Clear' filepath='Python/pystate.c' line='2374' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Clear'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2374' column='1'/>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2375' column='1'/>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='_PyObject_CheckCrossInterpreterData' mangled-name='_PyObject_CheckCrossInterpreterData' filepath='Python/pystate.c' line='2419' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_CheckCrossInterpreterData'>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2419' column='1'/>
<function-decl name='_PyObject_CheckCrossInterpreterData' mangled-name='_PyObject_CheckCrossInterpreterData' filepath='Python/pystate.c' line='2420' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_CheckCrossInterpreterData'>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2420' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyObject_GetCrossInterpreterData' mangled-name='_PyObject_GetCrossInterpreterData' filepath='Python/pystate.c' line='2429' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_GetCrossInterpreterData'>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2429' column='1'/>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2429' column='1'/>
<function-decl name='_PyObject_GetCrossInterpreterData' mangled-name='_PyObject_GetCrossInterpreterData' filepath='Python/pystate.c' line='2430' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyObject_GetCrossInterpreterData'>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2430' column='1'/>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2430' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_NewObject' mangled-name='_PyCrossInterpreterData_NewObject' filepath='Python/pystate.c' line='2467' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_NewObject'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2467' column='1'/>
<function-decl name='_PyCrossInterpreterData_NewObject' mangled-name='_PyCrossInterpreterData_NewObject' filepath='Python/pystate.c' line='2468' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_NewObject'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2468' column='1'/>
<return type-id='type-id-2'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_Release' mangled-name='_PyCrossInterpreterData_Release' filepath='Python/pystate.c' line='2501' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Release'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2501' column='1'/>
<function-decl name='_PyCrossInterpreterData_Release' mangled-name='_PyCrossInterpreterData_Release' filepath='Python/pystate.c' line='2502' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Release'>
<parameter type-id='type-id-1057' name='data' filepath='Python/pystate.c' line='2502' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_RegisterClass' mangled-name='_PyCrossInterpreterData_RegisterClass' filepath='Python/pystate.c' line='2602' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_RegisterClass'>
<parameter type-id='type-id-1' name='cls' filepath='Python/pystate.c' line='2602' column='1'/>
<parameter type-id='type-id-785' name='getdata' filepath='Python/pystate.c' line='2603' column='1'/>
<function-decl name='_PyCrossInterpreterData_RegisterClass' mangled-name='_PyCrossInterpreterData_RegisterClass' filepath='Python/pystate.c' line='2603' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_RegisterClass'>
<parameter type-id='type-id-1' name='cls' filepath='Python/pystate.c' line='2603' column='1'/>
<parameter type-id='type-id-785' name='getdata' filepath='Python/pystate.c' line='2604' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_UnregisterClass' mangled-name='_PyCrossInterpreterData_UnregisterClass' filepath='Python/pystate.c' line='2625' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_UnregisterClass'>
<parameter type-id='type-id-1' name='cls' filepath='Python/pystate.c' line='2625' column='1'/>
<function-decl name='_PyCrossInterpreterData_UnregisterClass' mangled-name='_PyCrossInterpreterData_UnregisterClass' filepath='Python/pystate.c' line='2626' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_UnregisterClass'>
<parameter type-id='type-id-1' name='cls' filepath='Python/pystate.c' line='2626' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
<function-decl name='_PyCrossInterpreterData_Lookup' mangled-name='_PyCrossInterpreterData_Lookup' filepath='Python/pystate.c' line='2645' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Lookup'>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2645' column='1'/>
<function-decl name='_PyCrossInterpreterData_Lookup' mangled-name='_PyCrossInterpreterData_Lookup' filepath='Python/pystate.c' line='2646' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyCrossInterpreterData_Lookup'>
<parameter type-id='type-id-2' name='obj' filepath='Python/pystate.c' line='2646' column='1'/>
<return type-id='type-id-785'/>
</function-decl>
<function-decl name='_PyInterpreterState_GetEvalFrameFunc' mangled-name='_PyInterpreterState_GetEvalFrameFunc' filepath='Python/pystate.c' line='2794' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetEvalFrameFunc'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2794' column='1'/>
<function-decl name='_PyInterpreterState_GetEvalFrameFunc' mangled-name='_PyInterpreterState_GetEvalFrameFunc' filepath='Python/pystate.c' line='2795' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetEvalFrameFunc'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2795' column='1'/>
<return type-id='type-id-778'/>
</function-decl>
<function-decl name='_PyInterpreterState_SetEvalFrameFunc' mangled-name='_PyInterpreterState_SetEvalFrameFunc' filepath='Python/pystate.c' line='2804' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_SetEvalFrameFunc'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2804' column='1'/>
<parameter type-id='type-id-778' name='eval_frame' filepath='Python/pystate.c' line='2805' column='1'/>
<function-decl name='_PyInterpreterState_SetEvalFrameFunc' mangled-name='_PyInterpreterState_SetEvalFrameFunc' filepath='Python/pystate.c' line='2805' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_SetEvalFrameFunc'>
<parameter type-id='type-id-20' name='interp' filepath='Python/pystate.c' line='2805' column='1'/>
<parameter type-id='type-id-778' name='eval_frame' filepath='Python/pystate.c' line='2806' column='1'/>
<return type-id='type-id-46'/>
</function-decl>
<function-decl name='_PyInterpreterState_GetConfigCopy' mangled-name='_PyInterpreterState_GetConfigCopy' filepath='Python/pystate.c' line='2824' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetConfigCopy'>
<parameter type-id='type-id-53' name='config' filepath='Python/pystate.c' line='2824' column='1'/>
<function-decl name='_PyInterpreterState_GetConfigCopy' mangled-name='_PyInterpreterState_GetConfigCopy' filepath='Python/pystate.c' line='2825' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_PyInterpreterState_GetConfigCopy'>
<parameter type-id='type-id-53' name='config' filepath='Python/pystate.c' line='2825' column='1'/>
<return type-id='type-id-8'/>
</function-decl>
</abi-instr>

1
Include/internal/pycore_pymem.h
View file

@ -18,6 +18,7 @@ typedef struct {
} debug_alloc_api_t;
struct _pymem_allocators {
PyThread_type_lock mutex;
struct {
PyMemAllocatorEx raw;
PyMemAllocatorEx mem;

6
Include/internal/pycore_runtime_init.h
View file

@ -25,9 +25,9 @@ extern PyTypeObject _PyExc_MemoryError;
#define _PyRuntimeState_INIT(runtime) \
{ \
.allocators = { \
_pymem_allocators_standard_INIT(runtime), \
_pymem_allocators_debug_INIT, \
_pymem_allocators_obj_arena_INIT, \
.standard = _pymem_allocators_standard_INIT(runtime), \
.debug = _pymem_allocators_debug_INIT, \
.obj_arena = _pymem_allocators_obj_arena_INIT, \
}, \
.obmalloc = _obmalloc_global_state_INIT, \
.pyhash_state = pyhash_state_INIT, \

231
Objects/obmalloc.c
View file

@ -1,3 +1,5 @@
/* Python's malloc wrappers (see pymem.h) */
#include "Python.h"
#include "pycore_code.h" // stats
#include "pycore_pystate.h" // _PyInterpreterState_GET
@ -15,13 +17,14 @@
/* Defined in tracemalloc.c */
extern void _PyMem_DumpTraceback(int fd, const void *ptr);
/* Python's malloc wrappers (see pymem.h) */
static void _PyObject_DebugDumpAddress(const void *p);
static void _PyMem_DebugCheckAddress(const char *func, char api_id, const void *p);
static void _PyMem_SetupDebugHooksDomain(PyMemAllocatorDomain domain);
static void set_up_debug_hooks_domain_unlocked(PyMemAllocatorDomain domain);
static void set_up_debug_hooks_unlocked(void);
static void get_allocator_unlocked(PyMemAllocatorDomain, PyMemAllocatorEx *);
static void set_allocator_unlocked(PyMemAllocatorDomain, PyMemAllocatorEx *);
/***************************************/
@ -200,6 +203,7 @@ _PyMem_ArenaFree(void *Py_UNUSED(ctx), void *ptr,
#endif
#define ALLOCATORS_MUTEX (_PyRuntime.allocators.mutex)
#define _PyMem_Raw (_PyRuntime.allocators.standard.raw)
#define _PyMem (_PyRuntime.allocators.standard.mem)
#define _PyObject (_PyRuntime.allocators.standard.obj)
@ -207,12 +211,16 @@ _PyMem_ArenaFree(void *Py_UNUSED(ctx), void *ptr,
#define _PyObject_Arena (_PyRuntime.allocators.obj_arena)
/***************************/
/* managing the allocators */
/***************************/
static int
pymem_set_default_allocator(PyMemAllocatorDomain domain, int debug,
PyMemAllocatorEx *old_alloc)
set_default_allocator_unlocked(PyMemAllocatorDomain domain, int debug,
PyMemAllocatorEx *old_alloc)
{
if (old_alloc != NULL) {
PyMem_GetAllocator(domain, old_alloc);
get_allocator_unlocked(domain, old_alloc);
}
@ -232,24 +240,32 @@ pymem_set_default_allocator(PyMemAllocatorDomain domain, int debug,
/* unknown domain */
return -1;
}
PyMem_SetAllocator(domain, &new_alloc);
set_allocator_unlocked(domain, &new_alloc);
if (debug) {
_PyMem_SetupDebugHooksDomain(domain);
set_up_debug_hooks_domain_unlocked(domain);
}
return 0;
}
#ifdef Py_DEBUG
static const int pydebug = 1;
#else
static const int pydebug = 0;
#endif
int
_PyMem_SetDefaultAllocator(PyMemAllocatorDomain domain,
PyMemAllocatorEx *old_alloc)
{
#ifdef Py_DEBUG
const int debug = 1;
#else
const int debug = 0;
#endif
return pymem_set_default_allocator(domain, debug, old_alloc);
if (ALLOCATORS_MUTEX == NULL) {
/* The runtime must be initializing. */
return set_default_allocator_unlocked(domain, pydebug, old_alloc);
}
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
int res = set_default_allocator_unlocked(domain, pydebug, old_alloc);
PyThread_release_lock(ALLOCATORS_MUTEX);
return res;
}
@ -289,8 +305,8 @@ _PyMem_GetAllocatorName(const char *name, PyMemAllocatorName *allocator)
}
int
_PyMem_SetupAllocators(PyMemAllocatorName allocator)
static int
set_up_allocators_unlocked(PyMemAllocatorName allocator)
{
switch (allocator) {
case PYMEM_ALLOCATOR_NOT_SET:
@ -298,15 +314,15 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
break;
case PYMEM_ALLOCATOR_DEFAULT:
(void)_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, NULL);
(void)_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_MEM, NULL);
(void)_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_OBJ, NULL);
(void)set_default_allocator_unlocked(PYMEM_DOMAIN_RAW, pydebug, NULL);
(void)set_default_allocator_unlocked(PYMEM_DOMAIN_MEM, pydebug, NULL);
(void)set_default_allocator_unlocked(PYMEM_DOMAIN_OBJ, pydebug, NULL);
break;
case PYMEM_ALLOCATOR_DEBUG:
(void)pymem_set_default_allocator(PYMEM_DOMAIN_RAW, 1, NULL);
(void)pymem_set_default_allocator(PYMEM_DOMAIN_MEM, 1, NULL);
(void)pymem_set_default_allocator(PYMEM_DOMAIN_OBJ, 1, NULL);
(void)set_default_allocator_unlocked(PYMEM_DOMAIN_RAW, 1, NULL);
(void)set_default_allocator_unlocked(PYMEM_DOMAIN_MEM, 1, NULL);
(void)set_default_allocator_unlocked(PYMEM_DOMAIN_OBJ, 1, NULL);
break;
#ifdef WITH_PYMALLOC
@ -314,14 +330,14 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
case PYMEM_ALLOCATOR_PYMALLOC_DEBUG:
{
PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &malloc_alloc);
set_allocator_unlocked(PYMEM_DOMAIN_RAW, &malloc_alloc);
PyMemAllocatorEx pymalloc = PYMALLOC_ALLOC;
PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &pymalloc);
PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &pymalloc);
set_allocator_unlocked(PYMEM_DOMAIN_MEM, &pymalloc);
set_allocator_unlocked(PYMEM_DOMAIN_OBJ, &pymalloc);
if (allocator == PYMEM_ALLOCATOR_PYMALLOC_DEBUG) {
PyMem_SetupDebugHooks();
set_up_debug_hooks_unlocked();
}
break;
}
@ -331,12 +347,12 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
case PYMEM_ALLOCATOR_MALLOC_DEBUG:
{
PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &malloc_alloc);
PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &malloc_alloc);
PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &malloc_alloc);
set_allocator_unlocked(PYMEM_DOMAIN_RAW, &malloc_alloc);
set_allocator_unlocked(PYMEM_DOMAIN_MEM, &malloc_alloc);
set_allocator_unlocked(PYMEM_DOMAIN_OBJ, &malloc_alloc);
if (allocator == PYMEM_ALLOCATOR_MALLOC_DEBUG) {
PyMem_SetupDebugHooks();
set_up_debug_hooks_unlocked();
}
break;
}
@ -345,9 +361,19 @@ _PyMem_SetupAllocators(PyMemAllocatorName allocator)
/* unknown allocator */
return -1;
}
return 0;
}
int
_PyMem_SetupAllocators(PyMemAllocatorName allocator)
{
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
int res = set_up_allocators_unlocked(allocator);
PyThread_release_lock(ALLOCATORS_MUTEX);
return res;
}
static int
pymemallocator_eq(PyMemAllocatorEx *a, PyMemAllocatorEx *b)
@ -356,8 +382,8 @@ pymemallocator_eq(PyMemAllocatorEx *a, PyMemAllocatorEx *b)
}
const char*
_PyMem_GetCurrentAllocatorName(void)
static const char*
get_current_allocator_name_unlocked(void)
{
PyMemAllocatorEx malloc_alloc = MALLOC_ALLOC;
#ifdef WITH_PYMALLOC
@ -406,6 +432,15 @@ _PyMem_GetCurrentAllocatorName(void)
return NULL;
}
const char*
_PyMem_GetCurrentAllocatorName(void)
{
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
const char *name = get_current_allocator_name_unlocked();
PyThread_release_lock(ALLOCATORS_MUTEX);
return name;
}
#ifdef WITH_PYMALLOC
static int
@ -428,7 +463,7 @@ _PyMem_PymallocEnabled(void)
static void
_PyMem_SetupDebugHooksDomain(PyMemAllocatorDomain domain)
set_up_debug_hooks_domain_unlocked(PyMemAllocatorDomain domain)
{
PyMemAllocatorEx alloc;
@ -437,53 +472,66 @@ _PyMem_SetupDebugHooksDomain(PyMemAllocatorDomain domain)
return;
}
PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &_PyMem_Debug.raw.alloc);
get_allocator_unlocked(domain, &_PyMem_Debug.raw.alloc);
alloc.ctx = &_PyMem_Debug.raw;
alloc.malloc = _PyMem_DebugRawMalloc;
alloc.calloc = _PyMem_DebugRawCalloc;
alloc.realloc = _PyMem_DebugRawRealloc;
alloc.free = _PyMem_DebugRawFree;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &alloc);
set_allocator_unlocked(domain, &alloc);
}
else if (domain == PYMEM_DOMAIN_MEM) {
if (_PyMem.malloc == _PyMem_DebugMalloc) {
return;
}
PyMem_GetAllocator(PYMEM_DOMAIN_MEM, &_PyMem_Debug.mem.alloc);
get_allocator_unlocked(domain, &_PyMem_Debug.mem.alloc);
alloc.ctx = &_PyMem_Debug.mem;
alloc.malloc = _PyMem_DebugMalloc;
alloc.calloc = _PyMem_DebugCalloc;
alloc.realloc = _PyMem_DebugRealloc;
alloc.free = _PyMem_DebugFree;
PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &alloc);
set_allocator_unlocked(domain, &alloc);
}
else if (domain == PYMEM_DOMAIN_OBJ) {
if (_PyObject.malloc == _PyMem_DebugMalloc) {
return;
}
PyMem_GetAllocator(PYMEM_DOMAIN_OBJ, &_PyMem_Debug.obj.alloc);
get_allocator_unlocked(domain, &_PyMem_Debug.obj.alloc);
alloc.ctx = &_PyMem_Debug.obj;
alloc.malloc = _PyMem_DebugMalloc;
alloc.calloc = _PyMem_DebugCalloc;
alloc.realloc = _PyMem_DebugRealloc;
alloc.free = _PyMem_DebugFree;
PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &alloc);
set_allocator_unlocked(domain, &alloc);
}
}
void
PyMem_SetupDebugHooks(void)
static void
set_up_debug_hooks_unlocked(void)
{
_PyMem_SetupDebugHooksDomain(PYMEM_DOMAIN_RAW);
_PyMem_SetupDebugHooksDomain(PYMEM_DOMAIN_MEM);
_PyMem_SetupDebugHooksDomain(PYMEM_DOMAIN_OBJ);
set_up_debug_hooks_domain_unlocked(PYMEM_DOMAIN_RAW);
set_up_debug_hooks_domain_unlocked(PYMEM_DOMAIN_MEM);
set_up_debug_hooks_domain_unlocked(PYMEM_DOMAIN_OBJ);
}
void
PyMem_GetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
PyMem_SetupDebugHooks(void)
{
if (ALLOCATORS_MUTEX == NULL) {
/* The runtime must not be completely initialized yet. */
set_up_debug_hooks_unlocked();
return;
}
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
set_up_debug_hooks_unlocked();
PyThread_release_lock(ALLOCATORS_MUTEX);
}
static void
get_allocator_unlocked(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
{
switch(domain)
{
@ -500,8 +548,8 @@ PyMem_GetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
}
}
void
PyMem_SetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
static void
set_allocator_unlocked(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
{
switch(domain)
{
@ -512,12 +560,77 @@ PyMem_SetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
}
}
void
PyMem_GetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
{
if (ALLOCATORS_MUTEX == NULL) {
/* The runtime must not be completely initialized yet. */
get_allocator_unlocked(domain, allocator);
return;
}
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
get_allocator_unlocked(domain, allocator);
PyThread_release_lock(ALLOCATORS_MUTEX);
}
void
PyMem_SetAllocator(PyMemAllocatorDomain domain, PyMemAllocatorEx *allocator)
{
if (ALLOCATORS_MUTEX == NULL) {
/* The runtime must not be completely initialized yet. */
set_allocator_unlocked(domain, allocator);
return;
}
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
set_allocator_unlocked(domain, allocator);
PyThread_release_lock(ALLOCATORS_MUTEX);
}
void
PyObject_GetArenaAllocator(PyObjectArenaAllocator *allocator)
{
if (ALLOCATORS_MUTEX == NULL) {
/* The runtime must not be completely initialized yet. */
*allocator = _PyObject_Arena;
return;
}
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
*allocator = _PyObject_Arena;
PyThread_release_lock(ALLOCATORS_MUTEX);
}
void
PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator)
{
if (ALLOCATORS_MUTEX == NULL) {
/* The runtime must not be completely initialized yet. */
_PyObject_Arena = *allocator;
return;
}
PyThread_acquire_lock(ALLOCATORS_MUTEX, WAIT_LOCK);
_PyObject_Arena = *allocator;
PyThread_release_lock(ALLOCATORS_MUTEX);
}
/* Note that there is a possible, but very unlikely, race in any place
* below where we call one of the allocator functions. We access two
* fields in each case: "malloc", etc. and "ctx".
*
* It is unlikely that the allocator will be changed while one of those
* calls is happening, much less in that very narrow window.
* Furthermore, the likelihood of a race is drastically reduced by the
* fact that the allocator may not be changed after runtime init
* (except with a wrapper).
*
* With the above in mind, we currently don't worry about locking
* around these uses of the runtime-global allocators state. */
/*************************/
/* the "arena" allocator */
/*************************/
void *
_PyObject_VirtualAlloc(size_t size)
{
@ -530,11 +643,10 @@ _PyObject_VirtualFree(void *obj, size_t size)
_PyObject_Arena.free(_PyObject_Arena.ctx, obj, size);
}
void
PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator)
{
_PyObject_Arena = *allocator;
}
/***********************/
/* the "raw" allocator */
/***********************/
void *
PyMem_RawMalloc(size_t size)
@ -574,6 +686,10 @@ void PyMem_RawFree(void *ptr)
}
/***********************/
/* the "mem" allocator */
/***********************/
void *
PyMem_Malloc(size_t size)
{
@ -617,6 +733,10 @@ PyMem_Free(void *ptr)
}
/***************************/
/* pymem utility functions */
/***************************/
wchar_t*
_PyMem_RawWcsdup(const wchar_t *str)
{
@ -663,6 +783,11 @@ _PyMem_Strdup(const char *str)
return copy;
}
/**************************/
/* the "object" allocator */
/**************************/
void *
PyObject_Malloc(size_t size)
{

3
Python/pystate.c
View file

@ -380,7 +380,7 @@ _Py_COMP_DIAG_IGNORE_DEPR_DECLS
static const _PyRuntimeState initial = _PyRuntimeState_INIT(_PyRuntime);
_Py_COMP_DIAG_POP
#define NUMLOCKS 7
#define NUMLOCKS 8
#define LOCKS_INIT(runtime) \
{ \
&(runtime)->interpreters.mutex, \
@ -390,6 +390,7 @@ _Py_COMP_DIAG_POP
&(runtime)->imports.extensions.mutex, \
&(runtime)->atexit.mutex, \
&(runtime)->audit_hooks.mutex, \
&(runtime)->allocators.mutex, \
}
static int