diff options
Diffstat (limited to 'Include/cpython/objimpl.h')
-rw-r--r-- | Include/cpython/objimpl.h | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/Include/cpython/objimpl.h b/Include/cpython/objimpl.h deleted file mode 100644 index f121922..0000000 --- a/Include/cpython/objimpl.h +++ /dev/null @@ -1,113 +0,0 @@ -#ifndef Py_CPYTHON_OBJIMPL_H -# error "this header file must not be included directly" -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -/* This function returns the number of allocated memory blocks, regardless of size */ -PyAPI_FUNC(Py_ssize_t) _Py_GetAllocatedBlocks(void); - -/* Macros */ -#ifdef WITH_PYMALLOC -PyAPI_FUNC(int) _PyObject_DebugMallocStats(FILE *out); -#endif - - -typedef struct { - /* user context passed as the first argument to the 2 functions */ - void *ctx; - - /* allocate an arena of size bytes */ - void* (*alloc) (void *ctx, size_t size); - - /* free an arena */ - void (*free) (void *ctx, void *ptr, size_t size); -} PyObjectArenaAllocator; - -/* Get the arena allocator. */ -PyAPI_FUNC(void) PyObject_GetArenaAllocator(PyObjectArenaAllocator *allocator); - -/* Set the arena allocator. */ -PyAPI_FUNC(void) PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator); - - -PyAPI_FUNC(Py_ssize_t) _PyGC_CollectNoFail(void); -PyAPI_FUNC(Py_ssize_t) _PyGC_CollectIfEnabled(void); - - -/* Test if an object has a GC head */ -#define PyObject_IS_GC(o) \ - (PyType_IS_GC(Py_TYPE(o)) \ - && (Py_TYPE(o)->tp_is_gc == NULL || Py_TYPE(o)->tp_is_gc(o))) - -/* GC information is stored BEFORE the object structure. */ -typedef struct { - // Pointer to next object in the list. - // 0 means the object is not tracked - uintptr_t _gc_next; - - // Pointer to previous object in the list. - // Lowest two bits are used for flags documented later. - uintptr_t _gc_prev; -} PyGC_Head; - -#define _Py_AS_GC(o) ((PyGC_Head *)(o)-1) - -/* True if the object is currently tracked by the GC. */ -#define _PyObject_GC_IS_TRACKED(o) (_Py_AS_GC(o)->_gc_next != 0) - -/* True if the object may be tracked by the GC in the future, or already is. - This can be useful to implement some optimizations. */ -#define _PyObject_GC_MAY_BE_TRACKED(obj) \ - (PyObject_IS_GC(obj) && \ - (!PyTuple_CheckExact(obj) || _PyObject_GC_IS_TRACKED(obj))) - - -/* Bit flags for _gc_prev */ -/* Bit 0 is set when tp_finalize is called */ -#define _PyGC_PREV_MASK_FINALIZED (1) -/* Bit 1 is set when the object is in generation which is GCed currently. */ -#define _PyGC_PREV_MASK_COLLECTING (2) -/* The (N-2) most significant bits contain the real address. */ -#define _PyGC_PREV_SHIFT (2) -#define _PyGC_PREV_MASK (((uintptr_t) -1) << _PyGC_PREV_SHIFT) - -// Lowest bit of _gc_next is used for flags only in GC. -// But it is always 0 for normal code. -#define _PyGCHead_NEXT(g) ((PyGC_Head*)(g)->_gc_next) -#define _PyGCHead_SET_NEXT(g, p) ((g)->_gc_next = (uintptr_t)(p)) - -// Lowest two bits of _gc_prev is used for _PyGC_PREV_MASK_* flags. -#define _PyGCHead_PREV(g) ((PyGC_Head*)((g)->_gc_prev & _PyGC_PREV_MASK)) -#define _PyGCHead_SET_PREV(g, p) do { \ - assert(((uintptr_t)p & ~_PyGC_PREV_MASK) == 0); \ - (g)->_gc_prev = ((g)->_gc_prev & ~_PyGC_PREV_MASK) \ - | ((uintptr_t)(p)); \ - } while (0) - -#define _PyGCHead_FINALIZED(g) \ - (((g)->_gc_prev & _PyGC_PREV_MASK_FINALIZED) != 0) -#define _PyGCHead_SET_FINALIZED(g) \ - ((g)->_gc_prev |= _PyGC_PREV_MASK_FINALIZED) - -#define _PyGC_FINALIZED(o) \ - _PyGCHead_FINALIZED(_Py_AS_GC(o)) -#define _PyGC_SET_FINALIZED(o) \ - _PyGCHead_SET_FINALIZED(_Py_AS_GC(o)) - - -PyAPI_FUNC(PyObject *) _PyObject_GC_Malloc(size_t size); -PyAPI_FUNC(PyObject *) _PyObject_GC_Calloc(size_t size); - - -/* Test if a type supports weak references */ -#define PyType_SUPPORTS_WEAKREFS(t) ((t)->tp_weaklistoffset > 0) - -#define PyObject_GET_WEAKREFS_LISTPTR(o) \ - ((PyObject **) (((char *) (o)) + Py_TYPE(o)->tp_weaklistoffset)) - -#ifdef __cplusplus -} -#endif |