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#ifndef Py_CEVAL_H

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#define Py_CEVAL_H

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#ifdef __cplusplus

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extern "C" {

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#endif

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/* Interface to random parts in ceval.c */

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PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(

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PyObject *, PyObject *, PyObject *);

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/* Inline this */

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#define PyEval_CallObject(func,arg) \

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PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL)

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PyAPI_FUNC(PyObject *) PyEval_CallFunction(PyObject *obj,

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const char *format, ...);

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PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj,

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const char *methodname,

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const char *format, ...);

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PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *);

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PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *);

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struct _frame; /* Avoid including frameobject.h */

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PyAPI_FUNC(PyObject *) PyEval_GetBuiltins(void);

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PyAPI_FUNC(PyObject *) PyEval_GetGlobals(void);

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PyAPI_FUNC(PyObject *) PyEval_GetLocals(void);

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PyAPI_FUNC(struct _frame *) PyEval_GetFrame(void);

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PyAPI_FUNC(int) PyEval_GetRestricted(void);

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/* Look at the current frame's (if any) code's co_flags, and turn on

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the corresponding compiler flags in cf->cf_flags. Return 1 if any

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flag was set, else return 0. */

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PyAPI_FUNC(int) PyEval_MergeCompilerFlags(PyCompilerFlags *cf);

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PyAPI_FUNC(int) Py_FlushLine(void);

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PyAPI_FUNC(int) Py_AddPendingCall(int (*func)(void *), void *arg);

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PyAPI_FUNC(int) Py_MakePendingCalls(void);

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/* Protection against deeply nested recursive calls */

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PyAPI_FUNC(void) Py_SetRecursionLimit(int);

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PyAPI_FUNC(int) Py_GetRecursionLimit(void);

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#define Py_EnterRecursiveCall(where) \

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(_Py_MakeRecCheck(PyThreadState_GET()->recursion_depth) && \

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_Py_CheckRecursiveCall(where))

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#define Py_LeaveRecursiveCall() \

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(--PyThreadState_GET()->recursion_depth)

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PyAPI_FUNC(int) _Py_CheckRecursiveCall(const char *where);

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PyAPI_DATA(int) _Py_CheckRecursionLimit;

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#ifdef USE_STACKCHECK

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# define _Py_MakeRecCheck(x) (++(x) > --_Py_CheckRecursionLimit)

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#else

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# define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit)

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#endif

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PyAPI_FUNC(const char *) PyEval_GetFuncName(PyObject *);

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PyAPI_FUNC(const char *) PyEval_GetFuncDesc(PyObject *);

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PyAPI_FUNC(PyObject *) PyEval_GetCallStats(PyObject *);

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PyAPI_FUNC(PyObject *) PyEval_EvalFrame(struct _frame *);

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PyAPI_FUNC(PyObject *) PyEval_EvalFrameEx(struct _frame *f, int exc);

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/* this used to be handled on a per-thread basis - now just two globals */

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PyAPI_DATA(volatile int) _Py_Ticker;

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PyAPI_DATA(int) _Py_CheckInterval;

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/* Interface for threads.

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A module that plans to do a blocking system call (or something else

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that lasts a long time and doesn't touch Python data) can allow other

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threads to run as follows:

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...preparations here...

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Py_BEGIN_ALLOW_THREADS

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...blocking system call here...

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Py_END_ALLOW_THREADS

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...interpret result here...

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The Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS pair expands to a

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{}-surrounded block.

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To leave the block in the middle (e.g., with return), you must insert

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a line containing Py_BLOCK_THREADS before the return, e.g.

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if (...premature_exit...) {

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Py_BLOCK_THREADS

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PyErr_SetFromErrno(PyExc_IOError);

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return NULL;

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}

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An alternative is:

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Py_BLOCK_THREADS

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if (...premature_exit...) {

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PyErr_SetFromErrno(PyExc_IOError);

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return NULL;

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}

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Py_UNBLOCK_THREADS

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For convenience, that the value of 'errno' is restored across

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Py_END_ALLOW_THREADS and Py_BLOCK_THREADS.

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WARNING: NEVER NEST CALLS TO Py_BEGIN_ALLOW_THREADS AND

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Py_END_ALLOW_THREADS!!!

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The function PyEval_InitThreads() should be called only from

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initthread() in "threadmodule.c".

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Note that not yet all candidates have been converted to use this

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mechanism!

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PyAPI_FUNC(PyThreadState *) PyEval_SaveThread(void);

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PyAPI_FUNC(void) PyEval_RestoreThread(PyThreadState *);

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#ifdef WITH_THREAD

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PyAPI_FUNC(int) PyEval_ThreadsInitialized(void);

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PyAPI_FUNC(void) PyEval_InitThreads(void);

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PyAPI_FUNC(void) PyEval_AcquireLock(void);

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PyAPI_FUNC(void) PyEval_ReleaseLock(void);

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PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);

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PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);

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PyAPI_FUNC(void) PyEval_ReInitThreads(void);

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#define Py_BEGIN_ALLOW_THREADS { \

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PyThreadState *_save; \

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_save = PyEval_SaveThread();

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#define Py_BLOCK_THREADS PyEval_RestoreThread(_save);

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#define Py_UNBLOCK_THREADS _save = PyEval_SaveThread();

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#define Py_END_ALLOW_THREADS PyEval_RestoreThread(_save); \

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}

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#else /* !WITH_THREAD */

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#define Py_BEGIN_ALLOW_THREADS {

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#define Py_BLOCK_THREADS

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#define Py_UNBLOCK_THREADS

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#define Py_END_ALLOW_THREADS }

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#endif /* !WITH_THREAD */

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PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *);

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PyAPI_FUNC(int) _PyEval_SliceIndexNotNone(PyObject *, Py_ssize_t *);

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#ifdef __cplusplus

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}

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#endif

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#endif /* !Py_CEVAL_H */

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