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files >> //proc/thread-self/root/proc/thread-self/root/opt/alt/python38/include/python3.8/cpython/objimpl.h
#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
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