89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
#include <stdlib.h>
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#ifndef Py_PYMEM_H
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#define Py_PYMEM_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_LIMITED_API
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PyAPI_FUNC(void *) PyMem_RawMalloc(size_t size);
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PyAPI_FUNC(void *) PyMem_RawCalloc(size_t nelem, size_t elsize);
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PyAPI_FUNC(void *) PyMem_RawRealloc(void *ptr, size_t new_size);
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PyAPI_FUNC(void) PyMem_RawFree(void *ptr);
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#endif
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PyAPI_FUNC(void *) PyMem_Malloc(size_t size);
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PyAPI_FUNC(void *) PyMem_Calloc(size_t nelem, size_t elsize);
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PyAPI_FUNC(void *) PyMem_Realloc(void *ptr, size_t new_size);
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PyAPI_FUNC(void) PyMem_Free(void *ptr);
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#define PyMem_MALLOC(n) PyMem_Malloc(n)
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#define PyMem_REALLOC(p, n) PyMem_Realloc(p, n)
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#define PyMem_FREE(p) PyMem_Free(p)
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/*
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* Type-oriented memory interface
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* ==============================
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*
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* Allocate memory for n objects of the given type. Returns a new pointer
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* or NULL if the request was too large or memory allocation failed. Use
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* these macros rather than doing the multiplication yourself so that proper
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* overflow checking is always done.
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*/
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#define PyMem_New(type, n) \
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( ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
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( (type *) PyMem_Malloc((n) * sizeof(type)) ) )
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#define PyMem_NEW(type, n) \
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( ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
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( (type *) PyMem_MALLOC((n) * sizeof(type)) ) )
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/*
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* The value of (p) is always clobbered by this macro regardless of success.
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* The caller MUST check if (p) is NULL afterwards and deal with the memory
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* error if so. This means the original value of (p) MUST be saved for the
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* caller's memory error handler to not lose track of it.
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*/
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#define PyMem_Resize(p, type, n) \
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( (p) = ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
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(type *) PyMem_Realloc((p), (n) * sizeof(type)) )
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#define PyMem_RESIZE(p, type, n) \
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( (p) = ((n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL : \
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(type *) PyMem_REALLOC((p), (n) * sizeof(type)) )
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/* PyMem{Del,DEL} are left over from ancient days, and shouldn't be used
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* anymore. They're just confusing aliases for PyMem_{Free,FREE} now.
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*/
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#define PyMem_Del PyMem_Free
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#define PyMem_DEL PyMem_FREE
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/* From CPython 3.6, with a different goal. PyTraceMalloc_Track()
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* is equivalent to __pypy__.add_memory_pressure(size); it works with
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* or without the GIL. PyTraceMalloc_Untrack() is an empty stub.
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* From CPython 3.7 these are public API functions
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*
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* #if defined(PYPY_TRACEMALLOC) || \
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* (PY_VERSION_HEX >= 0x03060000 && !defined(Py_LIMITED_API))
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*/
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#define PYPY_TRACEMALLOC 1
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PyAPI_FUNC(int) PyTraceMalloc_Track(
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unsigned int domain,
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uintptr_t ptr,
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size_t size);
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PyAPI_FUNC(int) PyTraceMalloc_Untrack(
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unsigned int domain,
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uintptr_t ptr);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_PYMEM_H */
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