G'day Justin, You are right it is #include <kern/thread_call.h> // And can be found in xnu/osfmk/kern It sort of depends on what you want to do with the timeou()t. But for regularly scheduled timeouts I prefer using thread_call_enter directly as it is lighter weight and closer to my requirements. Godfrey On Jun 17, , at 10:38, Justin Walker wrote: On Jun 17, 2004, at 10:11, Godfrey van der Linden wrote: Check out <xnu/kern/thread_call.h> Huh? I don't find such a file. What about a 'timeout()' call? _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.