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gh-85283: Add PyMem_RawMalloc() to the limited C API (#108570)

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Add PyMem_RawMalloc(), PyMem_RawCalloc(), PyMem_RawRealloc() and
PyMem_RawFree() to the limited C API.

These functions were added by Python 3.4 and are needed to port
stdlib extensions to the limited C API, like grp and pwd.

Co-authored-by: Erlend E. Aasland <erlend@python.org>
This commit is contained in:
Victor Stinner 2023-10-17 02:41:51 +02:00 • committed by GitHub
parent cf9c25c719
commit cc71cc9256
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8 changed files with 39 additions and 6 deletions
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6
Include/cpython/pymem.h
View file

@ -2,12 +2,6 @@
# error "this header file must not be included directly"
#endif
PyAPI_FUNC(void *) PyMem_RawMalloc(size_t size);
PyAPI_FUNC(void *) PyMem_RawCalloc(size_t nelem, size_t elsize);
PyAPI_FUNC(void *) PyMem_RawRealloc(void *ptr, size_t new_size);
PyAPI_FUNC(void) PyMem_RawFree(void *ptr);
typedef enum {
/* PyMem_RawMalloc(), PyMem_RawRealloc() and PyMem_RawFree() */
PYMEM_DOMAIN_RAW,

11
Include/pymem.h
View file

@ -87,6 +87,17 @@ PyAPI_FUNC(void) PyMem_Free(void *ptr);
#define PyMem_DEL(p) PyMem_Free((p))
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030d0000
// Memory allocator which doesn't require the GIL to be held.
// Usually, it's just a thin wrapper to functions of the standard C library:
// malloc(), calloc(), realloc() and free(). The difference is that
// tracemalloc can track these memory allocations.
PyAPI_FUNC(void *) PyMem_RawMalloc(size_t size);
PyAPI_FUNC(void *) PyMem_RawCalloc(size_t nelem, size_t elsize);
PyAPI_FUNC(void *) PyMem_RawRealloc(void *ptr, size_t new_size);
PyAPI_FUNC(void) PyMem_RawFree(void *ptr);
#endif
#ifndef Py_LIMITED_API
# define Py_CPYTHON_PYMEM_H
# include "cpython/pymem.h"