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| 1 | +/* -*- indent-tabs-mode: nil; tab-width: 4; -*- */ |
| 2 | + |
| 3 | +/* Greenlet object interface */ |
| 4 | + |
| 5 | +#ifndef Py_GREENLETOBJECT_H |
| 6 | +#define Py_GREENLETOBJECT_H |
| 7 | + |
| 8 | + |
| 9 | +#include <Python.h> |
| 10 | + |
| 11 | +#ifdef __cplusplus |
| 12 | +extern "C" { |
| 13 | +#endif |
| 14 | + |
| 15 | +/* This is deprecated and undocumented. It does not change. */ |
| 16 | +#define GREENLET_VERSION "1.0.0" |
| 17 | + |
| 18 | +#ifndef GREENLET_MODULE |
| 19 | +#define implementation_ptr_t void* |
| 20 | +#endif |
| 21 | + |
| 22 | +typedef struct _greenlet { |
| 23 | + PyObject_HEAD |
| 24 | + PyObject* weakreflist; |
| 25 | + PyObject* dict; |
| 26 | + implementation_ptr_t pimpl; |
| 27 | +} PyGreenlet; |
| 28 | + |
| 29 | +#define PyGreenlet_Check(op) (op && PyObject_TypeCheck(op, &PyGreenlet_Type)) |
| 30 | + |
| 31 | + |
| 32 | +/* C API functions */ |
| 33 | + |
| 34 | +/* Total number of symbols that are exported */ |
| 35 | +#define PyGreenlet_API_pointers 12 |
| 36 | + |
| 37 | +#define PyGreenlet_Type_NUM 0 |
| 38 | +#define PyExc_GreenletError_NUM 1 |
| 39 | +#define PyExc_GreenletExit_NUM 2 |
| 40 | + |
| 41 | +#define PyGreenlet_New_NUM 3 |
| 42 | +#define PyGreenlet_GetCurrent_NUM 4 |
| 43 | +#define PyGreenlet_Throw_NUM 5 |
| 44 | +#define PyGreenlet_Switch_NUM 6 |
| 45 | +#define PyGreenlet_SetParent_NUM 7 |
| 46 | + |
| 47 | +#define PyGreenlet_MAIN_NUM 8 |
| 48 | +#define PyGreenlet_STARTED_NUM 9 |
| 49 | +#define PyGreenlet_ACTIVE_NUM 10 |
| 50 | +#define PyGreenlet_GET_PARENT_NUM 11 |
| 51 | + |
| 52 | +#ifndef GREENLET_MODULE |
| 53 | +/* This section is used by modules that uses the greenlet C API */ |
| 54 | +static void** _PyGreenlet_API = NULL; |
| 55 | + |
| 56 | +# define PyGreenlet_Type \ |
| 57 | + (*(PyTypeObject*)_PyGreenlet_API[PyGreenlet_Type_NUM]) |
| 58 | + |
| 59 | +# define PyExc_GreenletError \ |
| 60 | + ((PyObject*)_PyGreenlet_API[PyExc_GreenletError_NUM]) |
| 61 | + |
| 62 | +# define PyExc_GreenletExit \ |
| 63 | + ((PyObject*)_PyGreenlet_API[PyExc_GreenletExit_NUM]) |
| 64 | + |
| 65 | +/* |
| 66 | + * PyGreenlet_New(PyObject *args) |
| 67 | + * |
| 68 | + * greenlet.greenlet(run, parent=None) |
| 69 | + */ |
| 70 | +# define PyGreenlet_New \ |
| 71 | + (*(PyGreenlet * (*)(PyObject * run, PyGreenlet * parent)) \ |
| 72 | + _PyGreenlet_API[PyGreenlet_New_NUM]) |
| 73 | + |
| 74 | +/* |
| 75 | + * PyGreenlet_GetCurrent(void) |
| 76 | + * |
| 77 | + * greenlet.getcurrent() |
| 78 | + */ |
| 79 | +# define PyGreenlet_GetCurrent \ |
| 80 | + (*(PyGreenlet * (*)(void)) _PyGreenlet_API[PyGreenlet_GetCurrent_NUM]) |
| 81 | + |
| 82 | +/* |
| 83 | + * PyGreenlet_Throw( |
| 84 | + * PyGreenlet *greenlet, |
| 85 | + * PyObject *typ, |
| 86 | + * PyObject *val, |
| 87 | + * PyObject *tb) |
| 88 | + * |
| 89 | + * g.throw(...) |
| 90 | + */ |
| 91 | +# define PyGreenlet_Throw \ |
| 92 | + (*(PyObject * (*)(PyGreenlet * self, \ |
| 93 | + PyObject * typ, \ |
| 94 | + PyObject * val, \ |
| 95 | + PyObject * tb)) \ |
| 96 | + _PyGreenlet_API[PyGreenlet_Throw_NUM]) |
| 97 | + |
| 98 | +/* |
| 99 | + * PyGreenlet_Switch(PyGreenlet *greenlet, PyObject *args) |
| 100 | + * |
| 101 | + * g.switch(*args, **kwargs) |
| 102 | + */ |
| 103 | +# define PyGreenlet_Switch \ |
| 104 | + (*(PyObject * \ |
| 105 | + (*)(PyGreenlet * greenlet, PyObject * args, PyObject * kwargs)) \ |
| 106 | + _PyGreenlet_API[PyGreenlet_Switch_NUM]) |
| 107 | + |
| 108 | +/* |
| 109 | + * PyGreenlet_SetParent(PyObject *greenlet, PyObject *new_parent) |
| 110 | + * |
| 111 | + * g.parent = new_parent |
| 112 | + */ |
| 113 | +# define PyGreenlet_SetParent \ |
| 114 | + (*(int (*)(PyGreenlet * greenlet, PyGreenlet * nparent)) \ |
| 115 | + _PyGreenlet_API[PyGreenlet_SetParent_NUM]) |
| 116 | + |
| 117 | +/* |
| 118 | + * PyGreenlet_GetParent(PyObject* greenlet) |
| 119 | + * |
| 120 | + * return greenlet.parent; |
| 121 | + * |
| 122 | + * This could return NULL even if there is no exception active. |
| 123 | + * If it does not return NULL, you are responsible for decrementing the |
| 124 | + * reference count. |
| 125 | + */ |
| 126 | +# define PyGreenlet_GetParent \ |
| 127 | + (*(PyGreenlet* (*)(PyGreenlet*)) \ |
| 128 | + _PyGreenlet_API[PyGreenlet_GET_PARENT_NUM]) |
| 129 | + |
| 130 | +/* |
| 131 | + * deprecated, undocumented alias. |
| 132 | + */ |
| 133 | +# define PyGreenlet_GET_PARENT PyGreenlet_GetParent |
| 134 | + |
| 135 | +# define PyGreenlet_MAIN \ |
| 136 | + (*(int (*)(PyGreenlet*)) \ |
| 137 | + _PyGreenlet_API[PyGreenlet_MAIN_NUM]) |
| 138 | + |
| 139 | +# define PyGreenlet_STARTED \ |
| 140 | + (*(int (*)(PyGreenlet*)) \ |
| 141 | + _PyGreenlet_API[PyGreenlet_STARTED_NUM]) |
| 142 | + |
| 143 | +# define PyGreenlet_ACTIVE \ |
| 144 | + (*(int (*)(PyGreenlet*)) \ |
| 145 | + _PyGreenlet_API[PyGreenlet_ACTIVE_NUM]) |
| 146 | + |
| 147 | + |
| 148 | + |
| 149 | + |
| 150 | +/* Macro that imports greenlet and initializes C API */ |
| 151 | +/* NOTE: This has actually moved to ``greenlet._greenlet._C_API``, but we |
| 152 | + keep the older definition to be sure older code that might have a copy of |
| 153 | + the header still works. */ |
| 154 | +# define PyGreenlet_Import() \ |
| 155 | + { \ |
| 156 | + _PyGreenlet_API = (void**)PyCapsule_Import("greenlet._C_API", 0); \ |
| 157 | + } |
| 158 | + |
| 159 | +#endif /* GREENLET_MODULE */ |
| 160 | + |
| 161 | +#ifdef __cplusplus |
| 162 | +} |
| 163 | +#endif |
| 164 | +#endif /* !Py_GREENLETOBJECT_H */ |
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