| #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 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(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 */ |