Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
cobject.c
/* Wrap void* pointers to be passed between C modules */
#include "Python.h"
/* Declarations for objects of type PyCObject */
typedef void (*destructor1)(void *);
typedef void (*destructor2)(void *, void*);
PyObject *
PyCObject_FromVoidPtr(void *cobj, void (*destr)(void *))
{
PyCObject *self;
self = PyObject_NEW(PyCObject, &PyCObject_Type);
if (self == NULL)
return NULL;
self->cobject=cobj;
self->destructor=destr;
self->desc=NULL;
return (PyObject *)self;
}
PyObject *
PyCObject_FromVoidPtrAndDesc(void *cobj, void *desc,
void (*destr)(void *, void *))
{
PyCObject *self;
if (!desc) {
PyErr_SetString(PyExc_TypeError,
"PyCObject_FromVoidPtrAndDesc called with null"
" description");
return NULL;
}
self = PyObject_NEW(PyCObject, &PyCObject_Type);
if (self == NULL)
return NULL;
self->cobject = cobj;
self->destructor = (destructor1)destr;
self->desc = desc;
return (PyObject *)self;
}
void *
PyCObject_AsVoidPtr(PyObject *self)
{
if (self) {
if (self->ob_type == &PyCObject_Type)
return ((PyCObject *)self)->cobject;
PyErr_SetString(PyExc_TypeError,
"PyCObject_AsVoidPtr with non-C-object");
}
if (!PyErr_Occurred())
PyErr_SetString(PyExc_TypeError,
"PyCObject_AsVoidPtr called with null pointer");
return NULL;
}
void *
PyCObject_GetDesc(PyObject *self)
{
if (self) {
if (self->ob_type == &PyCObject_Type)
return ((PyCObject *)self)->desc;
PyErr_SetString(PyExc_TypeError,
"PyCObject_GetDesc with non-C-object");
}
if (!PyErr_Occurred())
PyErr_SetString(PyExc_TypeError,
"PyCObject_GetDesc called with null pointer");
return NULL;
}
void *
PyCObject_Import(char *module_name, char *name)
{
PyObject *m, *c;
void *r = NULL;
if ((m = PyImport_ImportModule(module_name))) {
if ((c = PyObject_GetAttrString(m,name))) {
r = PyCObject_AsVoidPtr(c);
Py_DECREF(c);
}
Py_DECREF(m);
}
return r;
}
int
PyCObject_SetVoidPtr(PyObject *self, void *cobj)
{
PyCObject* cself = (PyCObject*)self;
if (cself == NULL || !PyCObject_Check(cself) ||
cself->destructor != NULL) {
PyErr_SetString(PyExc_TypeError,
"Invalid call to PyCObject_SetVoidPtr");
return 0;
}
cself->cobject = cobj;
return 1;
}
static void
PyCObject_dealloc(PyCObject *self)
{
if (self->destructor) {
if(self->desc)
((destructor2)(self->destructor))(self->cobject, self->desc);
else
(self->destructor)(self->cobject);
}
PyObject_DEL(self);
}
PyDoc_STRVAR(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.");
PyTypeObject PyCObject_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"PyCObject", /*tp_name*/
sizeof(PyCObject), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)PyCObject_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
0, /*tp_flags*/
PyCObject_Type__doc__ /*tp_doc*/
};