cpython-withatomic / Objects / cobject.c

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.

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provided that the above copyright notice appear in all copies and that
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/* Wrap void* pointers to be passed between C modules */

#include "Python.h"


/* Declarations for objects of type PyCObject */

typedef struct {
	PyObject_HEAD
	void *cobject;
	void (*destructor) Py_PROTO((void *));
} PyCObject;

PyObject *
PyCObject_FromVoidPtr(cobj, destr)
	void *cobj;
	void (*destr) Py_PROTO((void *));
{
	PyCObject *self;
	
	self = PyObject_NEW(PyCObject, &PyCObject_Type);
	if (self == NULL)
		return NULL;
	self->cobject=cobj;
	self->destructor=destr;
	return (PyObject *)self;
}

void *
PyCObject_AsVoidPtr(self)
	PyObject *self;
{
        return ((PyCObject *)self)->cobject;
}

static void
PyCObject_dealloc(self)
	PyCObject *self;
{
        if(self->destructor) (self->destructor)(self->cobject);
	PyMem_DEL(self);
}

static char PyCObject_Type__doc__[] = 
"C objects to be exported from one extension module to another\n\
\n\
C objects are used for communication between extension modules.  They\n\
provide a way for an extension module to export a C interface to other\n\
extension modules, so that extension modules can use the Python import\n\
mechanism to link to one another.\n"
;

PyTypeObject PyCObject_Type = {
	PyObject_HEAD_INIT(&PyType_Type)
	0,				/*ob_size*/
	"PyCObject",			/*tp_name*/
	sizeof(PyCObject),		/*tp_basicsize*/
	0,				/*tp_itemsize*/
	/* methods */
	(destructor)PyCObject_dealloc,	/*tp_dealloc*/
	(printfunc)0,		/*tp_print*/
	(getattrfunc)0,	/*tp_getattr*/
	(setattrfunc)0,	/*tp_setattr*/
	(cmpfunc)0,		/*tp_compare*/
	(reprfunc)0,		/*tp_repr*/
	0,			/*tp_as_number*/
	0,		/*tp_as_sequence*/
	0,		/*tp_as_mapping*/
	(hashfunc)0,		/*tp_hash*/
	(ternaryfunc)0,		/*tp_call*/
	(reprfunc)0,		/*tp_str*/

	/* Space for future expansion */
	0L,0L,0L,0L,
	PyCObject_Type__doc__ /* Documentation string */
};
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