8
/* Interface to random parts in ceval.c */
10
PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(
11
PyObject *, PyObject *, PyObject *);
14
#define PyEval_CallObject(func,arg) \
15
PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL)
17
PyAPI_FUNC(PyObject *) PyEval_CallFunction(PyObject *obj,
18
const char *format, ...);
19
PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj,
20
const char *methodname,
21
const char *format, ...);
23
#ifndef Py_LIMITED_API
24
PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *);
25
PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *);
26
PyAPI_FUNC(void) _PyEval_SetCoroutineWrapper(PyObject *);
27
PyAPI_FUNC(PyObject *) _PyEval_GetCoroutineWrapper(void);
30
struct _frame; /* Avoid including frameobject.h */
32
PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);
33
PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);
34
PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);
35
PyAPI_FUNC(struct _frame *) PyEval_GetFrame(void);
37
/* Look at the current frame's (if any) code's co_flags, and turn on
38
the corresponding compiler flags in cf->cf_flags. Return 1 if any
39
flag was set, else return 0. */
40
#ifndef Py_LIMITED_API
41
PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf);
44
PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg);
45
PyAPI_FUNC(int) Py_MakePendingCalls(void);
47
/* Protection against deeply nested recursive calls
49
In Python 3.0, this protection has two levels:
50
* normal anti-recursion protection is triggered when the recursion level
51
exceeds the current recursion limit. It raises a RecursionError, and sets
52
the "overflowed" flag in the thread state structure. This flag
53
temporarily *disables* the normal protection; this allows cleanup code
54
to potentially outgrow the recursion limit while processing the
56
* "last chance" anti-recursion protection is triggered when the recursion
57
level exceeds "current recursion limit + 50". By construction, this
58
protection can only be triggered when the "overflowed" flag is set. It
59
means the cleanup code has itself gone into an infinite loop, or the
60
RecursionError has been mistakingly ignored. When this protection is
61
triggered, the interpreter aborts with a Fatal Error.
63
In addition, the "overflowed" flag is automatically reset when the
64
recursion level drops below "current recursion limit - 50". This heuristic
65
is meant to ensure that the normal anti-recursion protection doesn't get
68
Please note: this scheme has its own limitations. See:
69
http://mail.python.org/pipermail/python-dev/2008-August/082106.html
70
for some observations.
72
PyAPI_FUNC(void) Py_SetRecursionLimit(int);
73
PyAPI_FUNC(int) Py_GetRecursionLimit(void);
75
#define Py_EnterRecursiveCall(where) \
76
(_Py_MakeRecCheck(PyThreadState_GET()->recursion_depth) && \
77
_Py_CheckRecursiveCall(where))
78
#define Py_LeaveRecursiveCall() \
79
do{ if(_Py_MakeEndRecCheck(PyThreadState_GET()->recursion_depth)) \
80
PyThreadState_GET()->overflowed = 0; \
82
PyAPI_FUNC(int) _Py_CheckRecursiveCall(const char *where);
83
PyAPI_DATA(int) _Py_CheckRecursionLimit;
86
/* With USE_STACKCHECK, we artificially decrement the recursion limit in order
87
to trigger regular stack checks in _Py_CheckRecursiveCall(), except if
88
the "overflowed" flag is set, in which case we need the true value
89
of _Py_CheckRecursionLimit for _Py_MakeEndRecCheck() to function properly.
91
# define _Py_MakeRecCheck(x) \
92
(++(x) > (_Py_CheckRecursionLimit += PyThreadState_GET()->overflowed - 1))
94
# define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit)
97
/* Compute the "lower-water mark" for a recursion limit. When
98
* Py_LeaveRecursiveCall() is called with a recursion depth below this mark,
99
* the overflowed flag is reset to 0. */
100
#define _Py_RecursionLimitLowerWaterMark(limit) \
103
: (3 * ((limit) >> 2)))
105
#define _Py_MakeEndRecCheck(x) \
106
(--(x) < _Py_RecursionLimitLowerWaterMark(_Py_CheckRecursionLimit))
108
#define Py_ALLOW_RECURSION \
109
do { unsigned char _old = PyThreadState_GET()->recursion_critical;\
110
PyThreadState_GET()->recursion_critical = 1;
112
#define Py_END_ALLOW_RECURSION \
113
PyThreadState_GET()->recursion_critical = _old; \
116
PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *);
117
PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *);
119
PyAPI_FUNC(PyObject *) PyEval_GetCallStats(PyObject *);
120
PyAPI_FUNC(PyObject *) PyEval_EvalFrame(struct _frame *);
121
PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(struct _frame *f, int exc);
123
/* Interface for threads.
125
A module that plans to do a blocking system call (or something else
126
that lasts a long time and doesn't touch Python data) can allow other
127
threads to run as follows:
129
...preparations here...
130
Py_BEGIN_ALLOW_THREADS
131
...blocking system call here...
133
...interpret result here...
135
The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a
137
To leave the block in the middle (e.g., with return), you must insert
138
a line containing Py_BLOCK_THREADS before the return, e.g.
140
if (...premature_exit...) {
142
PyErr_SetFromErrno(PyExc_IOError);
149
if (...premature_exit...) {
150
PyErr_SetFromErrno(PyExc_IOError);
155
For convenience, that the value of 'errno' is restored across
156
Py_END_ALLOW_THREADS and Py_BLOCK_THREADS.
158
WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND
159
Py_END_ALLOW_THREADS!!!
161
The function PyEval_InitThreads() should be called only from
162
init_thread() in "_threadmodule.c".
164
Note that not yet all candidates have been converted to use this
168
PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void);
169
PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *);
173
PyAPI_FUNC(int) PyEval_ThreadsInitialized(void);
174
PyAPI_FUNC(void) PyEval_InitThreads(void);
175
PyAPI_FUNC(void) _PyEval_FiniThreads(void);
176
PyAPI_FUNC(void) PyEval_AcquireLock(void);
177
PyAPI_FUNC(void) PyEval_ReleaseLock(void);
178
PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);
179
PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);
180
PyAPI_FUNC(void) PyEval_ReInitThreads(void);
182
#ifndef Py_LIMITED_API
183
PyAPI_FUNC(void) _PyEval_SetSwitchInterval(unsigned long microseconds);
184
PyAPI_FUNC(unsigned long) _PyEval_GetSwitchInterval(void);
187
#define Py_BEGIN_ALLOW_THREADS { \
188
PyThreadState *_save; \
189
_save = PyEval_SaveThread();
190
#define Py_BLOCK_THREADS PyEval_RestoreThread(_save);
191
#define Py_UNBLOCK_THREADS _save = PyEval_SaveThread();
192
#define Py_END_ALLOW_THREADS PyEval_RestoreThread(_save); \
195
#else /* !WITH_THREAD */
197
#define Py_BEGIN_ALLOW_THREADS {
198
#define Py_BLOCK_THREADS
199
#define Py_UNBLOCK_THREADS
200
#define Py_END_ALLOW_THREADS }
202
#endif /* !WITH_THREAD */
204
#ifndef Py_LIMITED_API
205
PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *);
206
PyAPI_FUNC(void) _PyEval_SignalAsyncExc(void);
213
#endif /* !Py_CEVAL_H */
added
removed
.tox/py35/include/python3.5m/ceval.h
