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138 lines
4.0 KiB
138 lines
4.0 KiB
#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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/* DLL-level Backwards compatibility: */ |
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#undef PyEval_CallObject |
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PyAPI_FUNC(PyObject *) PyEval_CallObject(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, char *format, ...); |
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PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj, |
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char *methodname, 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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PyAPI_FUNC(void) Py_SetRecursionLimit(int); |
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PyAPI_FUNC(int) Py_GetRecursionLimit(void); |
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PyAPI_FUNC(char *) PyEval_GetFuncName(PyObject *); |
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PyAPI_FUNC(char *) PyEval_GetFuncDesc(PyObject *); |
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PyAPI_FUNC(PyObject *) PyEval_GetCallStats(PyObject *); |
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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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*/ |
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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(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 *, int *); |
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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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