1 /* These two macros are basicly Py_BEGIN_ALLOW_THREADS and Py_BEGIN_ALLOW_THREADS
2 * from the other direction. If a Python thread calls a C function
3 * Py_BEGIN_ALLOW_THREADS is used to allow other python threads to run because
4 * we don't intend to call any Python functions.
5 *
6 * These two macros are used whenever a C thread intends to call some Python
7 * function, usually because some registered callback was triggered.
8 * Just like Py_BEGIN_ALLOW_THREADS it opens a block so these macros have to be
9 * used in pairs. They aquire the GIL, create a new Python thread state and swap
10 * the current thread state with the new one. This means this thread is now allowed
11 * to execute Python code. */
13 #define CPY_LOCK_THREADS {\
14 PyGILState_STATE gil_state;\
15 gil_state = PyGILState_Ensure();
17 #define CPY_RELEASE_THREADS \
18 PyGILState_Release(gil_state);\
19 }
21 /* Python 2.4 has this macro, older versions do not. */
22 #ifndef Py_VISIT
23 #define Py_VISIT(o) do {\
24 int _vret;\
25 if ((o) != NULL) {\
26 _vret = visit((o), arg);\
27 if (_vret != 0)\
28 return _vret;\
29 }\
30 } while (0)
31 #endif
33 /* Python 2.4 has this macro, older versions do not. */
34 #ifndef Py_CLEAR
35 #define Py_CLEAR(o) do {\
36 PyObject *tmp = o;\
37 (o) = NULL;\
38 Py_XDECREF(tmp);\
39 } while (0)
40 #endif
42 typedef struct {
43 PyObject_HEAD /* No semicolon! */
44 PyObject *parent;
45 PyObject *key;
46 PyObject *values;
47 PyObject *children;
48 } Config;
50 PyTypeObject ConfigType;