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-rw-r--r--lib/talloc/pytalloc.c269
1 files changed, 269 insertions, 0 deletions
diff --git a/lib/talloc/pytalloc.c b/lib/talloc/pytalloc.c
new file mode 100644
index 0000000..f6f0681
--- /dev/null
+++ b/lib/talloc/pytalloc.c
@@ -0,0 +1,269 @@
+/*
+ Unix SMB/CIFS implementation.
+ Python Talloc Module
+ Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2010-2011
+
+ ** 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 "lib/replace/system/python.h"
+#include <talloc.h>
+#include <pytalloc.h>
+#include "pytalloc_private.h"
+
+static PyTypeObject TallocObject_Type;
+
+/* 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);
+ }
+ Py_RETURN_NONE;
+}
+
+/* enable null tracking */
+static PyObject *pytalloc_enable_null_tracking(PyObject *self,
+ PyObject *Py_UNUSED(ignored))
+{
+ talloc_enable_null_tracking();
+ Py_RETURN_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"},
+ {0}
+};
+
+/**
+ * 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 PyUnicode_FromFormat("<%s talloc object at %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 objects do not support ordered comparisons, but talloc
+ * objects do, sorting by pointers clustered by type.
+ */
+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;
+}
+
+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,
+ .tp_richcompare = pytalloc_default_richcmp,
+};
+
+/**
+ * Default (but only slightly more useful than the default) implementation of Repr().
+ */
+static PyObject *pytalloc_base_default_repr(PyObject *obj)
+{
+ pytalloc_BaseObject *talloc_obj = (pytalloc_BaseObject *)obj;
+ PyTypeObject *type = (PyTypeObject*)PyObject_Type(obj);
+
+ return PyUnicode_FromFormat("<%s talloc based object at %p>",
+ type->tp_name, talloc_obj->ptr);
+}
+
+/**
+ * Simple dealloc for talloc-wrapping PyObjects
+ */
+static void pytalloc_base_dealloc(PyObject* self)
+{
+ pytalloc_BaseObject *obj = (pytalloc_BaseObject *)self;
+ assert(talloc_unlink(NULL, obj->talloc_ctx) != -1);
+ obj->talloc_ctx = NULL;
+ self->ob_type->tp_free(self);
+}
+
+/**
+ * Default objects do not support ordered comparisons, but talloc
+ * objects do, sorting by pointers clustered by type.
+ */
+static PyObject *pytalloc_base_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;
+}
+
+static PyTypeObject TallocBaseObject_Type = {
+ .tp_name = "talloc.BaseObject",
+ .tp_doc = "Python wrapper for a talloc-maintained object.",
+ .tp_basicsize = sizeof(pytalloc_BaseObject),
+ .tp_dealloc = (destructor)pytalloc_base_dealloc,
+ .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+ .tp_repr = pytalloc_base_default_repr,
+ .tp_richcompare = pytalloc_base_default_richcmp,
+};
+
+static PyTypeObject TallocGenericObject_Type = {
+ .tp_name = "talloc.GenericObject",
+ .tp_doc = "Python wrapper for a talloc-maintained object.",
+ .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+ .tp_base = &TallocBaseObject_Type,
+ .tp_basicsize = sizeof(pytalloc_BaseObject),
+};
+
+#define MODULE_DOC PyDoc_STR("Python wrapping of talloc-maintained objects.")
+
+static struct PyModuleDef moduledef = {
+ PyModuleDef_HEAD_INIT,
+ .m_name = "talloc",
+ .m_doc = MODULE_DOC,
+ .m_size = -1,
+ .m_methods = talloc_methods,
+};
+
+static PyObject *module_init(void);
+static PyObject *module_init(void)
+{
+ PyObject *m;
+
+ if (PyType_Ready(&TallocObject_Type) < 0)
+ return NULL;
+
+ if (PyType_Ready(&TallocBaseObject_Type) < 0)
+ return NULL;
+
+ if (PyType_Ready(&TallocGenericObject_Type) < 0)
+ return NULL;
+
+ m = PyModule_Create(&moduledef);
+ if (m == NULL)
+ return NULL;
+
+ Py_INCREF(&TallocObject_Type);
+ if (PyModule_AddObject(m, "Object", (PyObject *)&TallocObject_Type)) {
+ goto err;
+ }
+ Py_INCREF(&TallocBaseObject_Type);
+ if (PyModule_AddObject(m, "BaseObject", (PyObject *)&TallocBaseObject_Type)) {
+ goto err;
+ }
+ Py_INCREF(&TallocGenericObject_Type);
+ if (PyModule_AddObject(m, "GenericObject", (PyObject *)&TallocGenericObject_Type)) {
+ goto err;
+ }
+ return m;
+
+err:
+ Py_DECREF(m);
+ return NULL;
+}
+
+PyMODINIT_FUNC PyInit_talloc(void);
+PyMODINIT_FUNC PyInit_talloc(void)
+{
+ return module_init();
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 20:03:52 +0000