diff options
Diffstat (limited to 'Include/ceval.h')
| -rw-r--r-- | Include/ceval.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/Include/ceval.h b/Include/ceval.h index 4937f2c431..b5373a9cc4 100644 --- a/Include/ceval.h +++ b/Include/ceval.h @@ -23,6 +23,8 @@ PyAPI_FUNC(PyObject *) PyEval_CallMethod(PyObject *obj, #ifndef Py_LIMITED_API PyAPI_FUNC(void) PyEval_SetProfile(Py_tracefunc, PyObject *); PyAPI_FUNC(void) PyEval_SetTrace(Py_tracefunc, PyObject *); +PyAPI_FUNC(void) _PyEval_SetCoroutineWrapper(PyObject *); +PyAPI_FUNC(PyObject *) _PyEval_GetCoroutineWrapper(void); #endif struct _frame; /* Avoid including frameobject.h */ @@ -46,16 +48,16 @@ PyAPI_FUNC(int) Py_MakePendingCalls(void); In Python 3.0, this protection has two levels: * normal anti-recursion protection is triggered when the recursion level - exceeds the current recursion limit. It raises a RuntimeError, and sets + exceeds the current recursion limit. It raises a RecursionError, and sets the "overflowed" flag in the thread state structure. This flag temporarily *disables* the normal protection; this allows cleanup code to potentially outgrow the recursion limit while processing the - RuntimeError. + RecursionError. * "last chance" anti-recursion protection is triggered when the recursion level exceeds "current recursion limit + 50". By construction, this protection can only be triggered when the "overflowed" flag is set. It means the cleanup code has itself gone into an infinite loop, or the - RuntimeError has been mistakingly ignored. When this protection is + RecursionError has been mistakingly ignored. When this protection is triggered, the interpreter aborts with a Fatal Error. In addition, the "overflowed" flag is automatically reset when the @@ -92,10 +94,16 @@ PyAPI_DATA(int) _Py_CheckRecursionLimit; # define _Py_MakeRecCheck(x) (++(x) > _Py_CheckRecursionLimit) #endif +/* Compute the "lower-water mark" for a recursion limit. When + * Py_LeaveRecursiveCall() is called with a recursion depth below this mark, + * the overflowed flag is reset to 0. */ +#define _Py_RecursionLimitLowerWaterMark(limit) \ + (((limit) > 200) \ + ? ((limit) - 50) \ + : (3 * ((limit) >> 2))) + #define _Py_MakeEndRecCheck(x) \ - (--(x) < ((_Py_CheckRecursionLimit > 100) \ - ? (_Py_CheckRecursionLimit - 50) \ - : (3 * (_Py_CheckRecursionLimit >> 2)))) + (--(x) < _Py_RecursionLimitLowerWaterMark(_Py_CheckRecursionLimit)) #define Py_ALLOW_RECURSION \ do { unsigned char _old = PyThreadState_GET()->recursion_critical;\ |