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samba-mirror/lib/talloc/test_pytalloc.c
Andrew Bartlett 80f2b36efb pytalloc: Add new BaseObject
This new object not only avoids the ABI issues of talloc.Object
it stores one more pointer, being the start of the array, and
so can be used to fix the PIDL bindings/talloc refcount issue.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-03-08 01:58:26 +01:00

239 lines
6.4 KiB
C

/*
Samba Unix SMB/CIFS implementation.
C utilities for the pytalloc test suite.
Provides the "_test_pytalloc" Python module.
NOTE: Please read talloc_guide.txt for full documentation
Copyright (C) Petr Viktorin 2015
** NOTE! The following LGPL license applies to the talloc
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include <talloc.h>
#include <pytalloc.h>
static PyObject *testpytalloc_new(PyTypeObject *mod)
{
char *obj = talloc_strdup(NULL, "This is a test string");;
return pytalloc_steal(pytalloc_GetObjectType(), obj);
}
static PyObject *testpytalloc_get_object_type(PyObject *mod) {
PyObject *type = (PyObject *)pytalloc_GetObjectType();
Py_INCREF(type);
return type;
}
static PyObject *testpytalloc_base_new(PyTypeObject *mod)
{
char *obj = talloc_strdup(NULL, "This is a test string for a BaseObject");;
return pytalloc_steal(pytalloc_GetBaseObjectType(), obj);
}
static PyObject *testpytalloc_base_get_object_type(PyObject *mod) {
PyObject *type = (PyObject *)pytalloc_GetBaseObjectType();
Py_INCREF(type);
return type;
}
static PyObject *testpytalloc_reference(PyObject *mod, PyObject *args) {
PyObject *source = NULL;
void *ptr;
if (!PyArg_ParseTuple(args, "O!", pytalloc_GetObjectType(), &source))
return NULL;
ptr = pytalloc_get_ptr(source);
return pytalloc_reference_ex(pytalloc_GetObjectType(), ptr, ptr);
}
static PyObject *testpytalloc_base_reference(PyObject *mod, PyObject *args) {
PyObject *source = NULL;
void *mem_ctx;
if (!PyArg_ParseTuple(args, "O!", pytalloc_GetBaseObjectType(), &source)) {
return NULL;
}
mem_ctx = pytalloc_get_mem_ctx(source);
return pytalloc_reference_ex(pytalloc_GetBaseObjectType(), mem_ctx, mem_ctx);
}
static PyMethodDef test_talloc_methods[] = {
{ "new", (PyCFunction)testpytalloc_new, METH_NOARGS,
"create a talloc Object with a testing string"},
{ "get_object_type", (PyCFunction)testpytalloc_get_object_type, METH_NOARGS,
"call pytalloc_GetObjectType"},
{ "base_new", (PyCFunction)testpytalloc_base_new, METH_NOARGS,
"create a talloc BaseObject with a testing string"},
{ "base_get_object_type", (PyCFunction)testpytalloc_base_get_object_type, METH_NOARGS,
"call pytalloc_GetBaseObjectType"},
{ "reference", (PyCFunction)testpytalloc_reference, METH_VARARGS,
"call pytalloc_reference_ex"},
{ "base_reference", (PyCFunction)testpytalloc_base_reference, METH_VARARGS,
"call pytalloc_reference_ex"},
{ NULL }
};
static PyTypeObject DObject_Type;
static int dobject_destructor(void *ptr)
{
PyObject *destructor_func = *talloc_get_type(ptr, PyObject*);
PyObject *ret;
ret = PyObject_CallObject(destructor_func, NULL);
Py_DECREF(destructor_func);
if (ret == NULL) {
PyErr_Print();
} else {
Py_DECREF(ret);
}
return 0;
}
static PyObject *dobject_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
PyObject *destructor_func = NULL;
PyObject **obj;
if (!PyArg_ParseTuple(args, "O", &destructor_func))
return NULL;
Py_INCREF(destructor_func);
obj = talloc(NULL, PyObject*);
*obj = destructor_func;
talloc_set_destructor((void*)obj, dobject_destructor);
return pytalloc_steal(&DObject_Type, obj);
}
static PyTypeObject DObject_Type = {
.tp_name = "_test_pytalloc.DObject",
.tp_basicsize = sizeof(pytalloc_Object),
.tp_methods = NULL,
.tp_new = dobject_new,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = "test talloc object that calls a function when underlying data is freed\n",
};
static PyTypeObject DBaseObject_Type;
static int d_base_object_destructor(void *ptr)
{
PyObject *destructor_func = *talloc_get_type(ptr, PyObject*);
PyObject *ret;
ret = PyObject_CallObject(destructor_func, NULL);
Py_DECREF(destructor_func);
if (ret == NULL) {
PyErr_Print();
} else {
Py_DECREF(ret);
}
return 0;
}
static PyObject *d_base_object_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
PyObject *destructor_func = NULL;
PyObject **obj;
if (!PyArg_ParseTuple(args, "O", &destructor_func))
return NULL;
Py_INCREF(destructor_func);
obj = talloc(NULL, PyObject*);
*obj = destructor_func;
talloc_set_destructor((void*)obj, d_base_object_destructor);
return pytalloc_steal(&DBaseObject_Type, obj);
}
static PyTypeObject DBaseObject_Type = {
.tp_name = "_test_pytalloc.DBaseObject",
.tp_methods = NULL,
.tp_new = d_base_object_new,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = "test talloc object that calls a function when underlying data is freed\n",
};
#define MODULE_DOC PyDoc_STR("Test utility module for pytalloc")
#if PY_MAJOR_VERSION >= 3
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
.m_name = "_test_pytalloc",
.m_doc = PyDoc_STR("Test utility module for pytalloc"),
.m_size = -1,
.m_methods = test_talloc_methods,
};
#endif
static PyObject *module_init(void);
static PyObject *module_init(void)
{
PyObject *m;
DObject_Type.tp_base = pytalloc_GetObjectType();
if (PyType_Ready(&DObject_Type) < 0) {
return NULL;
}
DBaseObject_Type.tp_basicsize = pytalloc_BaseObject_size();
DBaseObject_Type.tp_base = pytalloc_GetBaseObjectType();
if (PyType_Ready(&DBaseObject_Type) < 0) {
return NULL;
}
#if PY_MAJOR_VERSION >= 3
m = PyModule_Create(&moduledef);
#else
m = Py_InitModule3("_test_pytalloc", test_talloc_methods, MODULE_DOC);
#endif
if (m == NULL) {
return NULL;
}
Py_INCREF(&DObject_Type);
Py_INCREF(DObject_Type.tp_base);
PyModule_AddObject(m, "DObject", (PyObject *)&DObject_Type);
Py_INCREF(&DBaseObject_Type);
Py_INCREF(DBaseObject_Type.tp_base);
PyModule_AddObject(m, "DBaseObject", (PyObject *)&DBaseObject_Type);
return m;
}
#if PY_MAJOR_VERSION >= 3
PyMODINIT_FUNC PyInit__test_pytalloc(void);
PyMODINIT_FUNC PyInit__test_pytalloc(void)
{
return module_init();
}
#else
void init_test_pytalloc(void);
void init_test_pytalloc(void)
{
module_init();
}
#endif