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Neil Schemenauer: small fixes for GC

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This commit is contained in:
Guido van Rossum 2000-07-01 01:00:38 +00:00
parent ce8e1dc395
commit 4cc6ac7b87
7 changed files with 17 additions and 13 deletions
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9
Include/objimpl.h
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@ -183,6 +183,8 @@ extern DL_IMPORT(void) _PyObject_Del Py_PROTO((PyObject *));
(PyVarObject *) PyObject_MALLOC( _PyObject_VAR_SIZE((typeobj),(n)) ),\
(typeobj), (n)) )
#define PyObject_DEL(op) PyObject_FREE(op)
/* This example code implements an object constructor with a custom
allocator, where PyObject_New is inlined, and shows the important
distinction between two steps (at least):
@ -221,7 +223,7 @@ extern DL_IMPORT(void) _PyObject_Del Py_PROTO((PyObject *));
PyObject_{New, VarNew, Del} to manage the memory. Set the type flag
Py_TPFLAGS_GC and define the type method tp_recurse. You should also
add the method tp_clear if your object is mutable. Include
PyGC_INFO_SIZE in the calculation of tp_basicsize. Call
PyGC_HEAD_SIZE in the calculation of tp_basicsize. Call
PyObject_GC_Init after the pointers followed by tp_recurse become
valid (usually just before returning the object from the allocation
method. Call PyObject_GC_Fini before those pointers become invalid
@ -234,7 +236,6 @@ extern DL_IMPORT(void) _PyObject_Del Py_PROTO((PyObject *));
#define PyObject_GC_Fini(op)
#define PyObject_AS_GC(op) (op)
#define PyObject_FROM_GC(op) (op)
#define PyObject_DEL(op) PyObject_FREE(op)
#else
@ -268,10 +269,6 @@ typedef struct _gc_head {
/* Get the object given the PyGC_Head */
#define PyObject_FROM_GC(g) ((PyObject *)(((PyGC_Head *)g)+1))
#define PyObject_DEL(op) PyObject_FREE( PyObject_IS_GC(op) ? \
(ANY *)PyObject_AS_GC(op) : \
(ANY *)(op) )
#endif /* WITH_CYCLE_GC */
#ifdef __cplusplus