Amaury Forgeot d'Arc added the comment: > What's strange is that calling __enter__ and __exit__ in a > try/finally block brings the speed back to the faster 'with' speed, > even though they call the same C functions
Looking carefully at the code, there are two reasons for this: - LockType has no methods! try "dir(thread.LockType)". Instead, LockType defines a tp_getattr which does a *linear* search in a PyMethodDef array. First items are served faster... - After converting this to use the usual tp_methods slot, there is still a performance difference, due to the fact that release() is a METH_NOARGS method, while __exit__() uses METH_VARARGS. Phew. __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2179> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
