home *** CD-ROM | disk | FTP | other *** search
- #ifndef Py_CEVAL_H
- #define Py_CEVAL_H
- #ifdef __cplusplus
- extern "C" {
- #endif
-
-
- /* Interface to random parts in ceval.c */
-
- DL_IMPORT(PyObject *) PyEval_CallObjectWithKeywords
- (PyObject *, PyObject *, PyObject *);
-
- /* DLL-level Backwards compatibility: */
- #undef PyEval_CallObject
- DL_IMPORT(PyObject *) PyEval_CallObject(PyObject *, PyObject *);
-
- /* Inline this */
- #define PyEval_CallObject(func,arg) \
- PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL)
-
- DL_IMPORT(PyObject *) PyEval_CallFunction(PyObject *obj, char *format, ...);
- DL_IMPORT(PyObject *) PyEval_CallMethod(PyObject *obj,
- char *methodname, char *format, ...);
-
- DL_IMPORT(PyObject *) PyEval_GetBuiltins(void);
- DL_IMPORT(PyObject *) PyEval_GetGlobals(void);
- DL_IMPORT(PyObject *) PyEval_GetLocals(void);
- DL_IMPORT(PyObject *) PyEval_GetOwner(void);
- DL_IMPORT(PyObject *) PyEval_GetFrame(void);
- DL_IMPORT(int) PyEval_GetRestricted(void);
-
- DL_IMPORT(int) Py_FlushLine(void);
-
- DL_IMPORT(int) Py_AddPendingCall(int (*func)(void *), void *arg);
- DL_IMPORT(int) Py_MakePendingCalls(void);
-
- DL_IMPORT(void) Py_SetRecursionLimit(int);
- DL_IMPORT(int) Py_GetRecursionLimit(void);
-
- /* 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!
- */
-
- extern DL_IMPORT(PyThreadState *) PyEval_SaveThread(void);
- extern DL_IMPORT(void) PyEval_RestoreThread(PyThreadState *);
-
- #ifdef WITH_THREAD
-
- extern DL_IMPORT(void) PyEval_InitThreads(void);
- extern DL_IMPORT(void) PyEval_AcquireLock(void);
- extern DL_IMPORT(void) PyEval_ReleaseLock(void);
- extern DL_IMPORT(void) PyEval_AcquireThread(PyThreadState *tstate);
- extern DL_IMPORT(void) PyEval_ReleaseThread(PyThreadState *tstate);
- extern DL_IMPORT(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 */
-
- extern DL_IMPORT(int) _PyEval_SliceIndex(PyObject *, int *);
-
-
- #ifdef __cplusplus
- }
- #endif
- #endif /* !Py_CEVAL_H */
-