1 /* -*- indent-tabs-mode: nil; tab-width: 4; -*- */
3 /* Greenlet object interface */
5 #ifndef Py_GREENLETOBJECT_H
6 #define Py_GREENLETOBJECT_H
14 /* This is deprecated and undocumented. It does not change. */
15 #define GREENLET_VERSION "1.0.0"
17 typedef struct _greenlet {
23 struct _greenlet* stack_prev;
24 struct _greenlet* parent;
26 struct _frame* top_frame;
28 PyObject* weakreflist;
29 #if PY_VERSION_HEX >= 0x030700A3
30 _PyErr_StackItem* exc_info;
31 _PyErr_StackItem exc_state;
35 PyObject* exc_traceback;
38 #if PY_VERSION_HEX >= 0x030700A3
43 #define PyGreenlet_Check(op) PyObject_TypeCheck(op, &PyGreenlet_Type)
44 #define PyGreenlet_MAIN(op) (((PyGreenlet*)(op))->stack_stop == (char*)-1)
45 #define PyGreenlet_STARTED(op) (((PyGreenlet*)(op))->stack_stop != NULL)
46 #define PyGreenlet_ACTIVE(op) (((PyGreenlet*)(op))->stack_start != NULL)
47 #define PyGreenlet_GET_PARENT(op) (((PyGreenlet*)(op))->parent)
51 /* Total number of symbols that are exported */
52 #define PyGreenlet_API_pointers 8
54 #define PyGreenlet_Type_NUM 0
55 #define PyExc_GreenletError_NUM 1
56 #define PyExc_GreenletExit_NUM 2
58 #define PyGreenlet_New_NUM 3
59 #define PyGreenlet_GetCurrent_NUM 4
60 #define PyGreenlet_Throw_NUM 5
61 #define PyGreenlet_Switch_NUM 6
62 #define PyGreenlet_SetParent_NUM 7
64 #ifndef GREENLET_MODULE
65 /* This section is used by modules that uses the greenlet C API */
66 static void** _PyGreenlet_API = NULL;
68 # define PyGreenlet_Type \
69 (*(PyTypeObject*)_PyGreenlet_API[PyGreenlet_Type_NUM])
71 # define PyExc_GreenletError \
72 ((PyObject*)_PyGreenlet_API[PyExc_GreenletError_NUM])
74 # define PyExc_GreenletExit \
75 ((PyObject*)_PyGreenlet_API[PyExc_GreenletExit_NUM])
78 * PyGreenlet_New(PyObject *args)
80 * greenlet.greenlet(run, parent=None)
82 # define PyGreenlet_New \
83 (*(PyGreenlet * (*)(PyObject * run, PyGreenlet * parent)) \
84 _PyGreenlet_API[PyGreenlet_New_NUM])
87 * PyGreenlet_GetCurrent(void)
89 * greenlet.getcurrent()
91 # define PyGreenlet_GetCurrent \
92 (*(PyGreenlet * (*)(void)) _PyGreenlet_API[PyGreenlet_GetCurrent_NUM])
96 * PyGreenlet *greenlet,
103 # define PyGreenlet_Throw \
104 (*(PyObject * (*)(PyGreenlet * self, \
108 _PyGreenlet_API[PyGreenlet_Throw_NUM])
111 * PyGreenlet_Switch(PyGreenlet *greenlet, PyObject *args)
113 * g.switch(*args, **kwargs)
115 # define PyGreenlet_Switch \
117 (*)(PyGreenlet * greenlet, PyObject * args, PyObject * kwargs)) \
118 _PyGreenlet_API[PyGreenlet_Switch_NUM])
121 * PyGreenlet_SetParent(PyObject *greenlet, PyObject *new_parent)
123 * g.parent = new_parent
125 # define PyGreenlet_SetParent \
126 (*(int (*)(PyGreenlet * greenlet, PyGreenlet * nparent)) \
127 _PyGreenlet_API[PyGreenlet_SetParent_NUM])
129 /* Macro that imports greenlet and initializes C API */
130 /* NOTE: This has actually moved to ``greenlet._greenlet._C_API``, but we
131 keep the older definition to be sure older code that might have a copy of
132 the header still works. */
133 # define PyGreenlet_Import() \
135 _PyGreenlet_API = (void**)PyCapsule_Import("greenlet._C_API", 0); \
138 #endif /* GREENLET_MODULE */
143 #endif /* !Py_GREENLETOBJECT_H */