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- #ifndef Py_CEVAL_H
- #define Py_CEVAL_H
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /***********************************************************
- Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
- The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
- DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* Interface to random parts in ceval.c */
-
- DL_IMPORT(PyObject *) PyEval_CallObjectWithKeywords
- Py_PROTO((PyObject *, PyObject *, PyObject *));
-
- /* Inline this */
- #define PyEval_CallObject(func,arg) \
- PyEval_CallObjectWithKeywords(func, arg, (PyObject *)NULL)
-
- #ifdef HAVE_STDARG_PROTOTYPES
- DL_IMPORT(PyObject *) PyEval_CallFunction Py_PROTO((PyObject *obj, char *format, ...));
- DL_IMPORT(PyObject *) PyEval_CallMethod Py_PROTO((PyObject *obj,
- char *methodname, char *format, ...));
- #else
- /* Better to have no prototypes at all for varargs functions in this case */
- DL_IMPORT(PyObject *) PyEval_CallFunction();
- DL_IMPORT(PyObject *) PyEval_CallMethod();
- #endif
-
- DL_IMPORT(PyObject *) PyEval_GetBuiltins Py_PROTO((void));
- DL_IMPORT(PyObject *) PyEval_GetGlobals Py_PROTO((void));
- DL_IMPORT(PyObject *) PyEval_GetLocals Py_PROTO((void));
- DL_IMPORT(PyObject *) PyEval_GetOwner Py_PROTO((void));
- DL_IMPORT(PyObject *) PyEval_GetFrame Py_PROTO((void));
- DL_IMPORT(int) PyEval_GetRestricted Py_PROTO((void));
-
- DL_IMPORT(int) Py_FlushLine Py_PROTO((void));
-
- DL_IMPORT(int) Py_AddPendingCall Py_PROTO((int (*func) Py_PROTO((ANY *)), ANY *arg));
- DL_IMPORT(int) Py_MakePendingCalls Py_PROTO((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 RET_SAVE 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 RET_SAVE.
-
- 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 Py_PROTO((void));
- extern DL_IMPORT(void) PyEval_RestoreThread Py_PROTO((PyThreadState *));
-
- #ifdef WITH_THREAD
-
- extern DL_IMPORT(void) PyEval_InitThreads Py_PROTO((void));
- extern DL_IMPORT(void) PyEval_AcquireLock Py_PROTO((void));
- extern DL_IMPORT(void) PyEval_ReleaseLock Py_PROTO((void));
- extern DL_IMPORT(void) PyEval_AcquireThread Py_PROTO((PyThreadState *tstate));
- extern DL_IMPORT(void) PyEval_ReleaseThread Py_PROTO((PyThreadState *tstate));
-
- #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 */
-
- #ifdef __cplusplus
- }
- #endif
- #endif /* !Py_CEVAL_H */
-