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- #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(const 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 */
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