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-rw-r--r--Include/objimpl.h104
1 files changed, 64 insertions, 40 deletions
diff --git a/Include/objimpl.h b/Include/objimpl.h
index c6b7df4aa5..9a27ec384f 100644
--- a/Include/objimpl.h
+++ b/Include/objimpl.h
@@ -94,51 +94,27 @@ PyObject_{New, NewVar, Del}.
the object gets initialized via PyObject_{Init, InitVar} after obtaining
the raw memory.
*/
-PyAPI_FUNC(void *) PyObject_Malloc(size_t);
-PyAPI_FUNC(void *) PyObject_Realloc(void *, size_t);
-PyAPI_FUNC(void) PyObject_Free(void *);
+PyAPI_FUNC(void *) PyObject_Malloc(size_t size);
+PyAPI_FUNC(void *) PyObject_Realloc(void *ptr, size_t new_size);
+PyAPI_FUNC(void) PyObject_Free(void *ptr);
+/* This function returns the number of allocated memory blocks, regardless of size */
+PyAPI_FUNC(Py_ssize_t) _Py_GetAllocatedBlocks(void);
/* Macros */
#ifdef WITH_PYMALLOC
#ifndef Py_LIMITED_API
PyAPI_FUNC(void) _PyObject_DebugMallocStats(FILE *out);
#endif /* #ifndef Py_LIMITED_API */
-#ifdef PYMALLOC_DEBUG /* WITH_PYMALLOC && PYMALLOC_DEBUG */
-PyAPI_FUNC(void *) _PyObject_DebugMalloc(size_t nbytes);
-PyAPI_FUNC(void *) _PyObject_DebugRealloc(void *p, size_t nbytes);
-PyAPI_FUNC(void) _PyObject_DebugFree(void *p);
-PyAPI_FUNC(void) _PyObject_DebugDumpAddress(const void *p);
-PyAPI_FUNC(void) _PyObject_DebugCheckAddress(const void *p);
-PyAPI_FUNC(void *) _PyObject_DebugMallocApi(char api, size_t nbytes);
-PyAPI_FUNC(void *) _PyObject_DebugReallocApi(char api, void *p, size_t nbytes);
-PyAPI_FUNC(void) _PyObject_DebugFreeApi(char api, void *p);
-PyAPI_FUNC(void) _PyObject_DebugCheckAddressApi(char api, const void *p);
-PyAPI_FUNC(void *) _PyMem_DebugMalloc(size_t nbytes);
-PyAPI_FUNC(void *) _PyMem_DebugRealloc(void *p, size_t nbytes);
-PyAPI_FUNC(void) _PyMem_DebugFree(void *p);
-#define PyObject_MALLOC _PyObject_DebugMalloc
-#define PyObject_Malloc _PyObject_DebugMalloc
-#define PyObject_REALLOC _PyObject_DebugRealloc
-#define PyObject_Realloc _PyObject_DebugRealloc
-#define PyObject_FREE _PyObject_DebugFree
-#define PyObject_Free _PyObject_DebugFree
-
-#else /* WITH_PYMALLOC && ! PYMALLOC_DEBUG */
+#endif
+
+/* Macros */
#define PyObject_MALLOC PyObject_Malloc
#define PyObject_REALLOC PyObject_Realloc
#define PyObject_FREE PyObject_Free
-#endif
-
-#else /* ! WITH_PYMALLOC */
-#define PyObject_MALLOC PyMem_MALLOC
-#define PyObject_REALLOC PyMem_REALLOC
-#define PyObject_FREE PyMem_FREE
-
-#endif /* WITH_PYMALLOC */
-
#define PyObject_Del PyObject_Free
-#define PyObject_DEL PyObject_FREE
+#define PyObject_DEL PyObject_Free
+
/*
* Generic object allocator interface
@@ -222,6 +198,26 @@ PyAPI_FUNC(PyVarObject *) _PyObject_NewVar(PyTypeObject *, Py_ssize_t);
constructor you would start directly with PyObject_Init/InitVar
*/
+#ifndef Py_LIMITED_API
+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);
+#endif
+
+
/*
* Garbage Collection Support
* ==========================
@@ -230,6 +226,10 @@ PyAPI_FUNC(PyVarObject *) _PyObject_NewVar(PyTypeObject *, Py_ssize_t);
/* C equivalent of gc.collect(). */
PyAPI_FUNC(Py_ssize_t) PyGC_Collect(void);
+#ifndef Py_LIMITED_API
+PyAPI_FUNC(Py_ssize_t) _PyGC_CollectNoFail(void);
+#endif
+
/* Test if a type has a GC head */
#define PyType_IS_GC(t) PyType_HasFeature((t), Py_TPFLAGS_HAVE_GC)
@@ -249,13 +249,37 @@ typedef union _gc_head {
union _gc_head *gc_prev;
Py_ssize_t gc_refs;
} gc;
- long double dummy; /* force worst-case alignment */
+ double dummy; /* force worst-case alignment */
} PyGC_Head;
extern PyGC_Head *_PyGC_generation0;
#define _Py_AS_GC(o) ((PyGC_Head *)(o)-1)
+/* Bit 0 is set when tp_finalize is called */
+#define _PyGC_REFS_MASK_FINALIZED (1 << 0)
+/* The (N-1) most significant bits contain the gc state / refcount */
+#define _PyGC_REFS_SHIFT (1)
+#define _PyGC_REFS_MASK (((size_t) -1) << _PyGC_REFS_SHIFT)
+
+#define _PyGCHead_REFS(g) ((g)->gc.gc_refs >> _PyGC_REFS_SHIFT)
+#define _PyGCHead_SET_REFS(g, v) do { \
+ (g)->gc.gc_refs = ((g)->gc.gc_refs & ~_PyGC_REFS_MASK) \
+ | (v << _PyGC_REFS_SHIFT); \
+ } while (0)
+#define _PyGCHead_DECREF(g) ((g)->gc.gc_refs -= 1 << _PyGC_REFS_SHIFT)
+
+#define _PyGCHead_FINALIZED(g) (((g)->gc.gc_refs & _PyGC_REFS_MASK_FINALIZED) != 0)
+#define _PyGCHead_SET_FINALIZED(g, v) do { \
+ (g)->gc.gc_refs = ((g)->gc.gc_refs & ~_PyGC_REFS_MASK_FINALIZED) \
+ | (v != 0); \
+ } while (0)
+
+#define _PyGC_FINALIZED(o) _PyGCHead_FINALIZED(_Py_AS_GC(o))
+#define _PyGC_SET_FINALIZED(o, v) _PyGCHead_SET_FINALIZED(_Py_AS_GC(o), v)
+
+#define _PyGC_REFS(o) _PyGCHead_REFS(_Py_AS_GC(o))
+
#define _PyGC_REFS_UNTRACKED (-2)
#define _PyGC_REFS_REACHABLE (-3)
#define _PyGC_REFS_TENTATIVELY_UNREACHABLE (-4)
@@ -264,9 +288,9 @@ extern PyGC_Head *_PyGC_generation0;
* collector it must be safe to call the ob_traverse method. */
#define _PyObject_GC_TRACK(o) do { \
PyGC_Head *g = _Py_AS_GC(o); \
- if (g->gc.gc_refs != _PyGC_REFS_UNTRACKED) \
+ if (_PyGCHead_REFS(g) != _PyGC_REFS_UNTRACKED) \
Py_FatalError("GC object already tracked"); \
- g->gc.gc_refs = _PyGC_REFS_REACHABLE; \
+ _PyGCHead_SET_REFS(g, _PyGC_REFS_REACHABLE); \
g->gc.gc_next = _PyGC_generation0; \
g->gc.gc_prev = _PyGC_generation0->gc.gc_prev; \
g->gc.gc_prev->gc.gc_next = g; \
@@ -279,8 +303,8 @@ extern PyGC_Head *_PyGC_generation0;
*/
#define _PyObject_GC_UNTRACK(o) do { \
PyGC_Head *g = _Py_AS_GC(o); \
- assert(g->gc.gc_refs != _PyGC_REFS_UNTRACKED); \
- g->gc.gc_refs = _PyGC_REFS_UNTRACKED; \
+ assert(_PyGCHead_REFS(g) != _PyGC_REFS_UNTRACKED); \
+ _PyGCHead_SET_REFS(g, _PyGC_REFS_UNTRACKED); \
g->gc.gc_prev->gc.gc_next = g->gc.gc_next; \
g->gc.gc_next->gc.gc_prev = g->gc.gc_prev; \
g->gc.gc_next = NULL; \
@@ -288,7 +312,7 @@ extern PyGC_Head *_PyGC_generation0;
/* True if the object is currently tracked by the GC. */
#define _PyObject_GC_IS_TRACKED(o) \
- ((_Py_AS_GC(o))->gc.gc_refs != _PyGC_REFS_UNTRACKED)
+ (_PyGC_REFS(o) != _PyGC_REFS_UNTRACKED)
/* True if the object may be tracked by the GC in the future, or already is.
This can be useful to implement some optimizations. */
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