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/*
Unix SMB/CIFS implementation.
Python Talloc Module
Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2010-2011
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include <talloc.h>
#include <pytalloc.h>
static PyTypeObject TallocObject_Type;
#if PY_MAJOR_VERSION >= 3
#define PyStr_FromFormat PyUnicode_FromFormat
#else
#define PyStr_FromFormat PyString_FromFormat
#endif
/* print a talloc tree report for a talloc python object */
static PyObject *pytalloc_report_full(PyObject *self, PyObject *args)
{
PyObject *py_obj = Py_None;
if (!PyArg_ParseTuple(args, "|O", &py_obj))
return NULL;
if (py_obj == Py_None) {
talloc_report_full(NULL, stdout);
} else {
talloc_report_full(pytalloc_get_mem_ctx(py_obj), stdout);
}
return Py_None;
}
/* enable null tracking */
static PyObject *pytalloc_enable_null_tracking(PyObject *self)
{
talloc_enable_null_tracking();
return Py_None;
}
/* return the number of talloc blocks */
static PyObject *pytalloc_total_blocks(PyObject *self, PyObject *args)
{
PyObject *py_obj = Py_None;
if (!PyArg_ParseTuple(args, "|O", &py_obj))
return NULL;
if (py_obj == Py_None) {
return PyLong_FromLong(talloc_total_blocks(NULL));
}
return PyLong_FromLong(talloc_total_blocks(pytalloc_get_mem_ctx(py_obj)));
}
static PyMethodDef talloc_methods[] = {
{ "report_full", (PyCFunction)pytalloc_report_full, METH_VARARGS,
"show a talloc tree for an object"},
{ "enable_null_tracking", (PyCFunction)pytalloc_enable_null_tracking, METH_NOARGS,
"enable tracking of the NULL object"},
{ "total_blocks", (PyCFunction)pytalloc_total_blocks, METH_VARARGS,
"return talloc block count"},
{ NULL }
};
/**
* Default (but only slightly more useful than the default) implementation of Repr().
*/
static PyObject *pytalloc_default_repr(PyObject *obj)
{
pytalloc_Object *talloc_obj = (pytalloc_Object *)obj;
PyTypeObject *type = (PyTypeObject*)PyObject_Type(obj);
return PyStr_FromFormat("<%s talloc object at 0x%p>",
type->tp_name, talloc_obj->ptr);
}
/**
* Simple dealloc for talloc-wrapping PyObjects
*/
static void pytalloc_dealloc(PyObject* self)
{
pytalloc_Object *obj = (pytalloc_Object *)self;
assert(talloc_unlink(NULL, obj->talloc_ctx) != -1);
obj->talloc_ctx = NULL;
self->ob_type->tp_free(self);
}
/**
* Default (but only slightly more useful than the default) implementation of cmp.
*/
#if PY_MAJOR_VERSION >= 3
static PyObject *pytalloc_default_richcmp(PyObject *obj1, PyObject *obj2, int op)
{
void *ptr1;
void *ptr2;
if (Py_TYPE(obj1) == Py_TYPE(obj2)) {
/* When types match, compare pointers */
ptr1 = pytalloc_get_ptr(obj1);
ptr2 = pytalloc_get_ptr(obj2);
} else if (PyObject_TypeCheck(obj2, &TallocObject_Type)) {
/* Otherwise, compare types */
ptr1 = Py_TYPE(obj1);
ptr2 = Py_TYPE(obj2);
} else {
Py_INCREF(Py_NotImplemented);
return Py_NotImplemented;
}
switch (op) {
case Py_EQ: return PyBool_FromLong(ptr1 == ptr2);
case Py_NE: return PyBool_FromLong(ptr1 != ptr2);
case Py_LT: return PyBool_FromLong(ptr1 < ptr2);
case Py_GT: return PyBool_FromLong(ptr1 > ptr2);
case Py_LE: return PyBool_FromLong(ptr1 <= ptr2);
case Py_GE: return PyBool_FromLong(ptr1 >= ptr2);
}
Py_INCREF(Py_NotImplemented);
return Py_NotImplemented;
}
#else
static int pytalloc_default_cmp(PyObject *_obj1, PyObject *_obj2)
{
pytalloc_Object *obj1 = (pytalloc_Object *)_obj1,
*obj2 = (pytalloc_Object *)_obj2;
if (obj1->ob_type != obj2->ob_type)
return ((char *)obj1->ob_type - (char *)obj2->ob_type);
return ((char *)pytalloc_get_ptr(obj1) - (char *)pytalloc_get_ptr(obj2));
}
#endif
static PyTypeObject TallocObject_Type = {
.tp_name = "talloc.Object",
.tp_doc = "Python wrapper for a talloc-maintained object.",
.tp_basicsize = sizeof(pytalloc_Object),
.tp_dealloc = (destructor)pytalloc_dealloc,
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_repr = pytalloc_default_repr,
#if PY_MAJOR_VERSION >= 3
.tp_richcompare = pytalloc_default_richcmp,
#else
.tp_compare = pytalloc_default_cmp,
#endif
};
#define MODULE_DOC PyDoc_STR("Python wrapping of talloc-maintained objects.")
#if PY_MAJOR_VERSION >= 3
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
.m_name = "talloc",
.m_doc = MODULE_DOC,
.m_size = -1,
.m_methods = talloc_methods,
};
#endif
static PyObject *module_init(void);
static PyObject *module_init(void)
{
PyObject *m;
if (PyType_Ready(&TallocObject_Type) < 0)
return NULL;
#if PY_MAJOR_VERSION >= 3
m = PyModule_Create(&moduledef);
#else
m = Py_InitModule3("talloc", talloc_methods, MODULE_DOC);
#endif
if (m == NULL)
return NULL;
Py_INCREF(&TallocObject_Type);
PyModule_AddObject(m, "Object", (PyObject *)&TallocObject_Type);
return m;
}
#if PY_MAJOR_VERSION >= 3
PyMODINIT_FUNC PyInit_talloc(void);
PyMODINIT_FUNC PyInit_talloc(void)
{
return module_init();
}
#else
void inittalloc(void);
void inittalloc(void)
{
module_init();
}
#endif
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