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Commitae2f355

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erlend-aaslandvstinner
authored andcommitted
gh-85283: Add PyMem_RawMalloc() to the limited C API
Add PyMem_RawMalloc(), PyMem_RawCalloc(), PyMem_RawRealloc() andPyMem_RawFree() to the limited C API.These functions were added by Python 3.4 and are needed to portstdlib extensions to the limited C API, like grp and pwd.
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8 files changed

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‎Doc/data/stable_abi.dat

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‎Doc/whatsnew/3.13.rst

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references) now supports the:ref:`Limited API<limited-c-api>`.
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(Contributed by Victor Stinner in:gh:`108634`.)
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* Add:c:func:`PyMem_RawMalloc`,:c:func:`PyMem_RawCalloc`,
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:c:func:`PyMem_RawRealloc` and:c:func:`PyMem_RawFree` to the limited C API.
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(Contributed by Victor Stinner in:gh:`85283`.)
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Porting to Python 3.13
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----------------------
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‎Include/cpython/pymem.h

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# error "this header file must not be included directly"
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#endif
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PyAPI_FUNC(void*)PyMem_RawMalloc(size_tsize);
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PyAPI_FUNC(void*)PyMem_RawCalloc(size_tnelem,size_telsize);
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PyAPI_FUNC(void*)PyMem_RawRealloc(void*ptr,size_tnew_size);
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PyAPI_FUNC(void)PyMem_RawFree(void*ptr);
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typedefenum {
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/* PyMem_RawMalloc(), PyMem_RawRealloc() and PyMem_RawFree() */
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PYMEM_DOMAIN_RAW,

‎Include/pymem.h

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#definePyMem_DEL(p) PyMem_Free((p))
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#if !defined(Py_LIMITED_API)||Py_LIMITED_API+0 >=0x030d0000
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// Memory allocator which doesn't require the GIL to be held.
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// Usually, it's just a thin wrapper to functions of the standard C library:
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// malloc(), calloc(), realloc() and free(). The difference is that
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// tracemalloc can track these memory allocations.
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PyAPI_FUNC(void*)PyMem_RawMalloc(size_tsize);
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PyAPI_FUNC(void*)PyMem_RawCalloc(size_tnelem,size_telsize);
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PyAPI_FUNC(void*)PyMem_RawRealloc(void*ptr,size_tnew_size);
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PyAPI_FUNC(void)PyMem_RawFree(void*ptr);
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#endif
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#ifndefPy_LIMITED_API
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# definePy_CPYTHON_PYMEM_H
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# include"cpython/pymem.h"

‎Lib/test/test_stable_abi_ctypes.py

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Add:c:func:`PyMem_RawMalloc`,:c:func:`PyMem_RawCalloc`,
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:c:func:`PyMem_RawRealloc` and:c:func:`PyMem_RawFree` to the limited C API.
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Patch by Victor Stinner.

‎Misc/stable_abi.toml

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added ='3.13'
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[function.PyMapping_HasKeyStringWithError]
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added ='3.13'
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[function.PyMem_RawMalloc]
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added ='3.13'
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[function.PyMem_RawCalloc]
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added ='3.13'
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[function.PyMem_RawRealloc]
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added ='3.13'
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[function.PyMem_RawFree]
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added ='3.13'

‎PC/python3dll.c

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