Marc-Andre Lemburg <m...@egenix.com> added the comment: A few things:
* The ceval_gil.h file is missing from the patch. * Please check whether you can move these variable declarations inside the main loop function (as statics): +/* This single variable consolidates all requests to break out of the fast path + in the eval loop. */ +static volatile int eval_breaker = 0; +/* Request for droppping the GIL */ +static volatile int gil_drop_request = 0; +/* Request for running pending calls */ +static volatile int pendingcalls_to_do = 0; +/* Request for looking at the `async_exc` field of the current thread state */ +static volatile int pending_async_exc = 0; * Instead of deprecating the set/getcheckinterval APIs, convert the arguments passed to these to the switch interval. The new APIs set/getswitchinteral are then not needed. * Please add the fallback solutions from the time module in case gettimeofday() is not available. You cannot assume that "all modern POSIX systems" implement that API - it was introduced in POSIX 2001 and Python 2.x still supports OSes that were released prior to that year. * Note that gettimeofday() et al. are rather slow APIs on most systems. It would be better to directly use a simple performance timer since we don't really need any timing accuracy in managing the GIL when run with threads. Have a look at the clock_gettime() API for ways of accessing such timers. There may also be other ways of accessing such times via pthreads. * I haven't looked at the timing details of the implementation, but please make sure that it works even if the clock interval is a few ms (while gettimeofday() provides us resolution, the system clock may still only tick in ms intervals - another reason to use CPU performance timers instead). Thanks. ---------- nosy: +lemburg _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue7753> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
