| #ifndef Py_CEVAL_H |
| #define Py_CEVAL_H |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /*********************************************************** |
| Copyright (c) 2000, BeOpen.com. |
| Copyright (c) 1995-2000, Corporation for National Research Initiatives. |
| Copyright (c) 1990-1995, Stichting Mathematisch Centrum. |
| All rights reserved. |
| |
| See the file "Misc/COPYRIGHT" for information on usage and |
| redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| ******************************************************************/ |
| |
| /* Interface to random parts in ceval.c */ |
| |
| DL_IMPORT(PyObject *) PyEval_CallObjectWithKeywords |
| Py_PROTO((PyObject *, PyObject *, PyObject *)); |
| |
| /* DLL-level Backwards compatibility: */ |
| #undef PyEval_CallObject |
| DL_IMPORT(PyObject *) PyEval_CallObject Py_PROTO((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 */ |
| |
| extern DL_IMPORT(int) _PyEval_SliceIndex Py_PROTO((PyObject *, int *)); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif /* !Py_CEVAL_H */ |