99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
#ifndef Py_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_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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/* Try to get the allocators name set by _PyMem_SetupAllocators(). */
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PyAPI_FUNC(const char*) _PyMem_GetCurrentAllocatorName(void);
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/* strdup() using PyMem_RawMalloc() */
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PyAPI_FUNC(char *) _PyMem_RawStrdup(const char *str);
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/* strdup() using PyMem_Malloc() */
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PyAPI_FUNC(char *) _PyMem_Strdup(const char *str);
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/* wcsdup() using PyMem_RawMalloc() */
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PyAPI_FUNC(wchar_t*) _PyMem_RawWcsdup(const wchar_t *str);
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typedef enum {
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/* PyMem_RawMalloc(), PyMem_RawRealloc() and PyMem_RawFree() */
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PYMEM_DOMAIN_RAW,
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/* PyMem_Malloc(), PyMem_Realloc() and PyMem_Free() */
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PYMEM_DOMAIN_MEM,
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/* PyObject_Malloc(), PyObject_Realloc() and PyObject_Free() */
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PYMEM_DOMAIN_OBJ
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} PyMemAllocatorDomain;
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typedef enum {
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PYMEM_ALLOCATOR_NOT_SET = 0,
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PYMEM_ALLOCATOR_DEFAULT = 1,
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PYMEM_ALLOCATOR_DEBUG = 2,
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PYMEM_ALLOCATOR_MALLOC = 3,
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PYMEM_ALLOCATOR_MALLOC_DEBUG = 4,
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#ifdef WITH_PYMALLOC
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PYMEM_ALLOCATOR_PYMALLOC = 5,
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PYMEM_ALLOCATOR_PYMALLOC_DEBUG = 6,
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#endif
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} PyMemAllocatorName;
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typedef struct {
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/* user context passed as the first argument to the 4 functions */
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void *ctx;
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/* allocate a memory block */
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void* (*malloc) (void *ctx, size_t size);
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/* allocate a memory block initialized by zeros */
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void* (*calloc) (void *ctx, size_t nelem, size_t elsize);
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/* allocate or resize a memory block */
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void* (*realloc) (void *ctx, void *ptr, size_t new_size);
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/* release a memory block */
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void (*free) (void *ctx, void *ptr);
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} PyMemAllocatorEx;
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/* Get the memory block allocator of the specified domain. */
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PyAPI_FUNC(void) PyMem_GetAllocator(PyMemAllocatorDomain domain,
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PyMemAllocatorEx *allocator);
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/* Set the memory block allocator of the specified domain.
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The new allocator must return a distinct non-NULL pointer when requesting
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zero bytes.
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For the PYMEM_DOMAIN_RAW domain, the allocator must be thread-safe: the GIL
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is not held when the allocator is called.
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If the new allocator is not a hook (don't call the previous allocator), the
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PyMem_SetupDebugHooks() function must be called to reinstall the debug hooks
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on top on the new allocator. */
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PyAPI_FUNC(void) PyMem_SetAllocator(PyMemAllocatorDomain domain,
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PyMemAllocatorEx *allocator);
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/* Setup hooks to detect bugs in the following Python memory allocator
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functions:
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- PyMem_RawMalloc(), PyMem_RawRealloc(), PyMem_RawFree()
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- PyMem_Malloc(), PyMem_Realloc(), PyMem_Free()
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- PyObject_Malloc(), PyObject_Realloc() and PyObject_Free()
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Newly allocated memory is filled with the byte 0xCB, freed memory is filled
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with the byte 0xDB. Additional checks:
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- detect API violations, ex: PyObject_Free() called on a buffer allocated
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by PyMem_Malloc()
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- detect write before the start of the buffer (buffer underflow)
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- detect write after the end of the buffer (buffer overflow)
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The function does nothing if Python is not compiled is debug mode. */
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PyAPI_FUNC(void) PyMem_SetupDebugHooks(void);
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