diff options
Diffstat (limited to 'Include/ceval.h')
| -rw-r--r-- | Include/ceval.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Include/ceval.h b/Include/ceval.h index eb1ee43..b5373a9 100644 --- a/Include/ceval.h +++ b/Include/ceval.h @@ -94,10 +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;\ |