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1#ifndef Py_CEVAL_H\r
2#define Py_CEVAL_H\r
3#ifdef __cplusplus\r
4extern "C" {\r
5#endif\r
6\r
7\r
8/* Interface to random parts in ceval.c */\r
9\r
10PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(\r
11 PyObject *, PyObject *, PyObject *);\r
12\r
13/* Inline this */\r
14#define PyEval_CallObject(func,arg) \\r
15 PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL)\r
16\r
17PyAPI_FUNC(PyObject *) PyEval_CallFunction(PyObject *obj,\r
18 const char *format, ...);\r
19PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj,\r
20 const char *methodname,\r
21 const char *format, ...);\r
22\r
23PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *);\r
24PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *);\r
25\r
26struct _frame; /* Avoid including frameobject.h */\r
27\r
28PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);\r
29PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);\r
30PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);\r
31PyAPI_FUNC(struct _frame *) PyEval_GetFrame(void);\r
32PyAPI_FUNC(int) PyEval_GetRestricted(void);\r
33\r
34/* Look at the current frame's (if any) code's co_flags, and turn on\r
35 the corresponding compiler flags in cf->cf_flags. Return 1 if any\r
36 flag was set, else return 0. */\r
37PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf);\r
38\r
39PyAPI_FUNC(int) Py_FlushLine(void);\r
40\r
41PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg);\r
42PyAPI_FUNC(int) Py_MakePendingCalls(void);\r
43\r
44/* Protection against deeply nested recursive calls */\r
45PyAPI_FUNC(void) Py_SetRecursionLimit(int);\r
46PyAPI_FUNC(int) Py_GetRecursionLimit(void);\r
47\r
48#define Py_EnterRecursiveCall(where) \\r
49 (_Py_MakeRecCheck(PyThreadState_GET()->recursion_depth) && \\r
50 _Py_CheckRecursiveCall(where))\r
51#define Py_LeaveRecursiveCall() \\r
52 (--PyThreadState_GET()->recursion_depth)\r
53PyAPI_FUNC(int) _Py_CheckRecursiveCall(char *where);\r
54PyAPI_DATA(int) _Py_CheckRecursionLimit;\r
55#ifdef USE_STACKCHECK\r
56# define _Py_MakeRecCheck(x) (++(x) > --_Py_CheckRecursionLimit)\r
57#else\r
58# define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit)\r
59#endif\r
60\r
61PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *);\r
62PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *);\r
63\r
64PyAPI_FUNC(PyObject *) PyEval_GetCallStats(PyObject *);\r
65PyAPI_FUNC(PyObject *) PyEval_EvalFrame(struct _frame *);\r
66PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(struct _frame *f, int exc);\r
67\r
68/* this used to be handled on a per-thread basis - now just two globals */\r
69PyAPI_DATA(volatile int) _Py_Ticker;\r
70PyAPI_DATA(int) _Py_CheckInterval;\r
71\r
72/* Interface for threads.\r
73\r
74 A module that plans to do a blocking system call (or something else\r
75 that lasts a long time and doesn't touch Python data) can allow other\r
76 threads to run as follows:\r
77\r
78 ...preparations here...\r
79 Py_BEGIN_ALLOW_THREADS\r
80 ...blocking system call here...\r
81 Py_END_ALLOW_THREADS\r
82 ...interpret result here...\r
83\r
84 The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a\r
85 {}-surrounded block.\r
86 To leave the block in the middle (e.g., with return), you must insert\r
87 a line containing Py_BLOCK_THREADS before the return, e.g.\r
88\r
89 if (...premature_exit...) {\r
90 Py_BLOCK_THREADS\r
91 PyErr_SetFromErrno(PyExc_IOError);\r
92 return NULL;\r
93 }\r
94\r
95 An alternative is:\r
96\r
97 Py_BLOCK_THREADS\r
98 if (...premature_exit...) {\r
99 PyErr_SetFromErrno(PyExc_IOError);\r
100 return NULL;\r
101 }\r
102 Py_UNBLOCK_THREADS\r
103\r
104 For convenience, that the value of 'errno' is restored across\r
105 Py_END_ALLOW_THREADS and Py_BLOCK_THREADS.\r
106\r
107 WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND\r
108 Py_END_ALLOW_THREADS!!!\r
109\r
110 The function PyEval_InitThreads() should be called only from\r
111 initthread() in "threadmodule.c".\r
112\r
113 Note that not yet all candidates have been converted to use this\r
114 mechanism!\r
115*/\r
116\r
117PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void);\r
118PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *);\r
119\r
120#ifdef WITH_THREAD\r
121\r
122PyAPI_FUNC(int) PyEval_ThreadsInitialized(void);\r
123PyAPI_FUNC(void) PyEval_InitThreads(void);\r
124PyAPI_FUNC(void) PyEval_AcquireLock(void);\r
125PyAPI_FUNC(void) PyEval_ReleaseLock(void);\r
126PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);\r
127PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);\r
128PyAPI_FUNC(void) PyEval_ReInitThreads(void);\r
129\r
130#define Py_BEGIN_ALLOW_THREADS { \\r
131 PyThreadState *_save; \\r
132 _save = PyEval_SaveThread();\r
133#define Py_BLOCK_THREADS PyEval_RestoreThread(_save);\r
134#define Py_UNBLOCK_THREADS _save = PyEval_SaveThread();\r
135#define Py_END_ALLOW_THREADS PyEval_RestoreThread(_save); \\r
136 }\r
137\r
138#else /* !WITH_THREAD */\r
139\r
140#define Py_BEGIN_ALLOW_THREADS {\r
141#define Py_BLOCK_THREADS\r
142#define Py_UNBLOCK_THREADS\r
143#define Py_END_ALLOW_THREADS }\r
144\r
145#endif /* !WITH_THREAD */\r
146\r
147PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *);\r
148\r
149\r
150#ifdef __cplusplus\r
151}\r
152#endif\r
153#endif /* !Py_CEVAL_H */\r