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v0.8.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 97719c9ce56bfb19fa7b0833c8c7947ad2fd7e52 authored by Tim Peters on 21 May 2003, 20:43:10 UTC, committed by Tim Peters on 21 May 2003, 20:43:10 UTC 
PyType_Ready():  Complain if the type is a base type, and gc'able, and
 
tp_free is NULL or PyObject_Del at the end.  Because it's a base type
it must call tp_free in its dealloc function, and because it's gc'able
it must not call PyObject_Del.

inherit_slots():  Don't inherit tp_free unless the type and its base
agree about whether they're gc'able.  If the type is gc'able and the
base is not, and the base uses the default PyObject_Del for its
tp_free, give the type PyObject_GC_Del for its tp_free (the appropriate
default for a gc'able type).

cPickle.c:  The Pickler and Unpickler types claim to be base classes
and gc'able, but their dealloc functions didn't call tp_free.
Repaired that.  Also call PyType_Ready() on these typeobjects, so
that the correct (PyObject_GC_Del) default memory-freeing function
gets plugged into these types' tp_free slots.
1 parent 54d9cdf
Raw File
Tip revision: 97719c9ce56bfb19fa7b0833c8c7947ad2fd7e52 authored by Tim Peters on 21 May 2003, 20:43:10 UTC
PyType_Ready(): Complain if the type is a base type, and gc'able, and
Tip revision: 97719c9
cobject.h 

/* C objects to be exported from one extension module to another.
 
   C objects are used for communication between extension modules.
   They provide a way for an extension module to export a C interface
   to other extension modules, so that extension modules can use the
   Python import mechanism to link to one another.

*/

#ifndef Py_COBJECT_H
#define Py_COBJECT_H
#ifdef __cplusplus
extern "C" {
#endif

extern DL_IMPORT(PyTypeObject) PyCObject_Type;

#define PyCObject_Check(op) ((op)->ob_type == &PyCObject_Type)

/* Create a PyCObject from a pointer to a C object and an optional
   destructor function.  If the second argument is non-null, then it
   will be called with the first argument if and when the PyCObject is
   destroyed.

*/
extern DL_IMPORT(PyObject *)
PyCObject_FromVoidPtr(void *cobj, void (*destruct)(void*));


/* Create a PyCObject from a pointer to a C object, a description object,
   and an optional destructor function.  If the third argument is non-null,
   then it will be called with the first and second arguments if and when 
   the PyCObject is destroyed.
*/
extern DL_IMPORT(PyObject *)
PyCObject_FromVoidPtrAndDesc(void *cobj, void *desc,
                             void (*destruct)(void*,void*));

/* Retrieve a pointer to a C object from a PyCObject. */
extern DL_IMPORT(void *)
PyCObject_AsVoidPtr(PyObject *);

/* Retrieve a pointer to a description object from a PyCObject. */
extern DL_IMPORT(void *)
PyCObject_GetDesc(PyObject *);

/* Import a pointer to a C object from a module using a PyCObject. */
extern DL_IMPORT(void *)
PyCObject_Import(char *module_name, char *cobject_name);

#ifdef __cplusplus
}
#endif
#endif /* !Py_COBJECT_H */
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