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	Major cleanup, added all old files (python2) to 'old_v0.1' folder
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| /* The PyMem_ family:  low-level memory allocation interfaces. | ||||
|    See objimpl.h for the PyObject_ memory family. | ||||
| */ | ||||
|  | ||||
| #ifndef Py_PYMEM_H | ||||
| #define Py_PYMEM_H | ||||
|  | ||||
| #include "pyport.h" | ||||
|  | ||||
| #ifdef __cplusplus | ||||
| extern "C" { | ||||
| #endif | ||||
|  | ||||
| #ifndef Py_LIMITED_API | ||||
| PyAPI_FUNC(void *) PyMem_RawMalloc(size_t size); | ||||
| PyAPI_FUNC(void *) PyMem_RawRealloc(void *ptr, size_t new_size); | ||||
| PyAPI_FUNC(void) PyMem_RawFree(void *ptr); | ||||
| #endif | ||||
|  | ||||
|  | ||||
| /* BEWARE: | ||||
|  | ||||
|    Each interface exports both functions and macros.  Extension modules should | ||||
|    use the functions, to ensure binary compatibility across Python versions. | ||||
|    Because the Python implementation is free to change internal details, and | ||||
|    the macros may (or may not) expose details for speed, if you do use the | ||||
|    macros you must recompile your extensions with each Python release. | ||||
|  | ||||
|    Never mix calls to PyMem_ with calls to the platform malloc/realloc/ | ||||
|    calloc/free.  For example, on Windows different DLLs may end up using | ||||
|    different heaps, and if you use PyMem_Malloc you'll get the memory from the | ||||
|    heap used by the Python DLL; it could be a disaster if you free()'ed that | ||||
|    directly in your own extension.  Using PyMem_Free instead ensures Python | ||||
|    can return the memory to the proper heap.  As another example, in | ||||
|    PYMALLOC_DEBUG mode, Python wraps all calls to all PyMem_ and PyObject_ | ||||
|    memory functions in special debugging wrappers that add additional | ||||
|    debugging info to dynamic memory blocks.  The system routines have no idea | ||||
|    what to do with that stuff, and the Python wrappers have no idea what to do | ||||
|    with raw blocks obtained directly by the system routines then. | ||||
|  | ||||
|    The GIL must be held when using these APIs. | ||||
| */ | ||||
|  | ||||
| /* | ||||
|  * Raw memory interface | ||||
|  * ==================== | ||||
|  */ | ||||
|  | ||||
| /* Functions | ||||
|  | ||||
|    Functions supplying platform-independent semantics for malloc/realloc/ | ||||
|    free.  These functions make sure that allocating 0 bytes returns a distinct | ||||
|    non-NULL pointer (whenever possible -- if we're flat out of memory, NULL | ||||
|    may be returned), even if the platform malloc and realloc don't. | ||||
|    Returned pointers must be checked for NULL explicitly.  No action is | ||||
|    performed on failure (no exception is set, no warning is printed, etc). | ||||
| */ | ||||
|  | ||||
| PyAPI_FUNC(void *) PyMem_Malloc(size_t size); | ||||
| PyAPI_FUNC(void *) PyMem_Realloc(void *ptr, size_t new_size); | ||||
| PyAPI_FUNC(void) PyMem_Free(void *ptr); | ||||
|  | ||||
| #ifndef Py_LIMITED_API | ||||
| PyAPI_FUNC(char *) _PyMem_RawStrdup(const char *str); | ||||
| PyAPI_FUNC(char *) _PyMem_Strdup(const char *str); | ||||
| #endif | ||||
|  | ||||
| /* Macros. */ | ||||
|  | ||||
| /* PyMem_MALLOC(0) means malloc(1). Some systems would return NULL | ||||
|    for malloc(0), which would be treated as an error. Some platforms | ||||
|    would return a pointer with no memory behind it, which would break | ||||
|    pymalloc. To solve these problems, allocate an extra byte. */ | ||||
| /* Returns NULL to indicate error if a negative size or size larger than | ||||
|    Py_ssize_t can represent is supplied.  Helps prevents security holes. */ | ||||
| #define PyMem_MALLOC(n)         PyMem_Malloc(n) | ||||
| #define PyMem_REALLOC(p, n)     PyMem_Realloc(p, n) | ||||
| #define PyMem_FREE(p)           PyMem_Free(p) | ||||
|  | ||||
| /* | ||||
|  * Type-oriented memory interface | ||||
|  * ============================== | ||||
|  * | ||||
|  * Allocate memory for n objects of the given type.  Returns a new pointer | ||||
|  * or NULL if the request was too large or memory allocation failed.  Use | ||||
|  * these macros rather than doing the multiplication yourself so that proper | ||||
|  * overflow checking is always done. | ||||
|  */ | ||||
|  | ||||
| #define PyMem_New(type, n) \ | ||||
|   ( ((size_t)(n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL :	\ | ||||
| 	( (type *) PyMem_Malloc((n) * sizeof(type)) ) ) | ||||
| #define PyMem_NEW(type, n) \ | ||||
|   ( ((size_t)(n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL :	\ | ||||
| 	( (type *) PyMem_MALLOC((n) * sizeof(type)) ) ) | ||||
|  | ||||
| /* | ||||
|  * The value of (p) is always clobbered by this macro regardless of success. | ||||
|  * The caller MUST check if (p) is NULL afterwards and deal with the memory | ||||
|  * error if so.  This means the original value of (p) MUST be saved for the | ||||
|  * caller's memory error handler to not lose track of it. | ||||
|  */ | ||||
| #define PyMem_Resize(p, type, n) \ | ||||
|   ( (p) = ((size_t)(n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL :	\ | ||||
| 	(type *) PyMem_Realloc((p), (n) * sizeof(type)) ) | ||||
| #define PyMem_RESIZE(p, type, n) \ | ||||
|   ( (p) = ((size_t)(n) > PY_SSIZE_T_MAX / sizeof(type)) ? NULL :	\ | ||||
| 	(type *) PyMem_REALLOC((p), (n) * sizeof(type)) ) | ||||
|  | ||||
| /* PyMem{Del,DEL} are left over from ancient days, and shouldn't be used | ||||
|  * anymore.  They're just confusing aliases for PyMem_{Free,FREE} now. | ||||
|  */ | ||||
| #define PyMem_Del		PyMem_Free | ||||
| #define PyMem_DEL		PyMem_FREE | ||||
|  | ||||
| #ifndef Py_LIMITED_API | ||||
| typedef enum { | ||||
|     /* PyMem_RawMalloc(), PyMem_RawRealloc() and PyMem_RawFree() */ | ||||
|     PYMEM_DOMAIN_RAW, | ||||
|  | ||||
|     /* PyMem_Malloc(), PyMem_Realloc() and PyMem_Free() */ | ||||
|     PYMEM_DOMAIN_MEM, | ||||
|  | ||||
|     /* PyObject_Malloc(), PyObject_Realloc() and PyObject_Free() */ | ||||
|     PYMEM_DOMAIN_OBJ | ||||
| } PyMemAllocatorDomain; | ||||
|  | ||||
| typedef struct { | ||||
|     /* user context passed as the first argument to the 3 functions */ | ||||
|     void *ctx; | ||||
|  | ||||
|     /* allocate a memory block */ | ||||
|     void* (*malloc) (void *ctx, size_t size); | ||||
|  | ||||
|     /* allocate or resize a memory block */ | ||||
|     void* (*realloc) (void *ctx, void *ptr, size_t new_size); | ||||
|  | ||||
|     /* release a memory block */ | ||||
|     void (*free) (void *ctx, void *ptr); | ||||
| } PyMemAllocator; | ||||
|  | ||||
| /* Get the memory block allocator of the specified domain. */ | ||||
| PyAPI_FUNC(void) PyMem_GetAllocator(PyMemAllocatorDomain domain, | ||||
|                                     PyMemAllocator *allocator); | ||||
|  | ||||
| /* Set the memory block allocator of the specified domain. | ||||
|  | ||||
|    The new allocator must return a distinct non-NULL pointer when requesting | ||||
|    zero bytes. | ||||
|  | ||||
|    For the PYMEM_DOMAIN_RAW domain, the allocator must be thread-safe: the GIL | ||||
|    is not held when the allocator is called. | ||||
|  | ||||
|    If the new allocator is not a hook (don't call the previous allocator), the | ||||
|    PyMem_SetupDebugHooks() function must be called to reinstall the debug hooks | ||||
|    on top on the new allocator. */ | ||||
| PyAPI_FUNC(void) PyMem_SetAllocator(PyMemAllocatorDomain domain, | ||||
|                                     PyMemAllocator *allocator); | ||||
|  | ||||
| /* Setup hooks to detect bugs in the following Python memory allocator | ||||
|    functions: | ||||
|  | ||||
|    - PyMem_RawMalloc(), PyMem_RawRealloc(), PyMem_RawFree() | ||||
|    - PyMem_Malloc(), PyMem_Realloc(), PyMem_Free() | ||||
|    - PyObject_Malloc(), PyObject_Realloc() and PyObject_Free() | ||||
|  | ||||
|    Newly allocated memory is filled with the byte 0xCB, freed memory is filled | ||||
|    with the byte 0xDB. Additionnal checks: | ||||
|  | ||||
|    - detect API violations, ex: PyObject_Free() called on a buffer allocated | ||||
|      by PyMem_Malloc() | ||||
|    - detect write before the start of the buffer (buffer underflow) | ||||
|    - detect write after the end of the buffer (buffer overflow) | ||||
|  | ||||
|    The function does nothing if Python is not compiled is debug mode. */ | ||||
| PyAPI_FUNC(void) PyMem_SetupDebugHooks(void); | ||||
| #endif | ||||
|  | ||||
| #ifdef __cplusplus | ||||
| } | ||||
| #endif | ||||
|  | ||||
| #endif /* !Py_PYMEM_H */ | ||||
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