#ifndef Py_CEVAL_H | |
#define Py_CEVAL_H | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/* Interface to random parts in ceval.c */ | |
PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords( | |
PyObject *, PyObject *, PyObject *); | |
/* Inline this */ | |
#define PyEval_CallObject(func,arg) \ | |
PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL) | |
PyAPI_FUNC(PyObject *) PyEval_CallFunction(PyObject *obj, | |
const char *format, ...); | |
PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj, | |
const char *methodname, | |
const char *format, ...); | |
PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *); | |
PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *); | |
struct _frame; /* Avoid including frameobject.h */ | |
PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void); | |
PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void); | |
PyAPI_FUNC(PyObject *) PyEval_GetLocals(void); | |
PyAPI_FUNC(struct _frame *) PyEval_GetFrame(void); | |
PyAPI_FUNC(int) PyEval_GetRestricted(void); | |
/* Look at the current frame's (if any) code's co_flags, and turn on | |
the corresponding compiler flags in cf->cf_flags. Return 1 if any | |
flag was set, else return 0. */ | |
PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf); | |
PyAPI_FUNC(int) Py_FlushLine(void); | |
PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg); | |
PyAPI_FUNC(int) Py_MakePendingCalls(void); | |
/* Protection against deeply nested recursive calls */ | |
PyAPI_FUNC(void) Py_SetRecursionLimit(int); | |
PyAPI_FUNC(int) Py_GetRecursionLimit(void); | |
#define Py_EnterRecursiveCall(where) \ | |
(_Py_MakeRecCheck(PyThreadState_GET()->recursion_depth) && \ | |
_Py_CheckRecursiveCall(where)) | |
#define Py_LeaveRecursiveCall() \ | |
(--PyThreadState_GET()->recursion_depth) | |
PyAPI_FUNC(int) _Py_CheckRecursiveCall(char *where); | |
PyAPI_DATA(int) _Py_CheckRecursionLimit; | |
#ifdef USE_STACKCHECK | |
# define _Py_MakeRecCheck(x) (++(x) > --_Py_CheckRecursionLimit) | |
#else | |
# define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit) | |
#endif | |
PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *); | |
PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *); | |
PyAPI_FUNC(PyObject *) PyEval_GetCallStats(PyObject *); | |
PyAPI_FUNC(PyObject *) PyEval_EvalFrame(struct _frame *); | |
PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(struct _frame *f, int exc); | |
/* this used to be handled on a per-thread basis - now just two globals */ | |
PyAPI_DATA(volatile int) _Py_Ticker; | |
PyAPI_DATA(int) _Py_CheckInterval; | |
/* Interface for threads. | |
A module that plans to do a blocking system call (or something else | |
that lasts a long time and doesn't touch Python data) can allow other | |
threads to run as follows: | |
...preparations here... | |
Py_BEGIN_ALLOW_THREADS | |
...blocking system call here... | |
Py_END_ALLOW_THREADS | |
...interpret result here... | |
The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a | |
{}-surrounded block. | |
To leave the block in the middle (e.g., with return), you must insert | |
a line containing Py_BLOCK_THREADS before the return, e.g. | |
if (...premature_exit...) { | |
Py_BLOCK_THREADS | |
PyErr_SetFromErrno(PyExc_IOError); | |
return NULL; | |
} | |
An alternative is: | |
Py_BLOCK_THREADS | |
if (...premature_exit...) { | |
PyErr_SetFromErrno(PyExc_IOError); | |
return NULL; | |
} | |
Py_UNBLOCK_THREADS | |
For convenience, that the value of 'errno' is restored across | |
Py_END_ALLOW_THREADS and Py_BLOCK_THREADS. | |
WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND | |
Py_END_ALLOW_THREADS!!! | |
The function PyEval_InitThreads() should be called only from | |
initthread() in "threadmodule.c". | |
Note that not yet all candidates have been converted to use this | |
mechanism! | |
*/ | |
PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void); | |
PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *); | |
#ifdef WITH_THREAD | |
PyAPI_FUNC(int) PyEval_ThreadsInitialized(void); | |
PyAPI_FUNC(void) PyEval_InitThreads(void); | |
PyAPI_FUNC(void) PyEval_AcquireLock(void); | |
PyAPI_FUNC(void) PyEval_ReleaseLock(void); | |
PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate); | |
PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate); | |
PyAPI_FUNC(void) PyEval_ReInitThreads(void); | |
#define Py_BEGIN_ALLOW_THREADS { \ | |
PyThreadState *_save; \ | |
_save = PyEval_SaveThread(); | |
#define Py_BLOCK_THREADS PyEval_RestoreThread(_save); | |
#define Py_UNBLOCK_THREADS _save = PyEval_SaveThread(); | |
#define Py_END_ALLOW_THREADS PyEval_RestoreThread(_save); \ | |
} | |
#else /* !WITH_THREAD */ | |
#define Py_BEGIN_ALLOW_THREADS { | |
#define Py_BLOCK_THREADS | |
#define Py_UNBLOCK_THREADS | |
#define Py_END_ALLOW_THREADS } | |
#endif /* !WITH_THREAD */ | |
PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *); | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* !Py_CEVAL_H */ |