wenzelm [Wed, 06 Jan 2010 15:07:56 +0100] rev 34279
tasks of canceled groups are considered "ready" -- enables to purge the queue from tasks depending on unfinished promises (also improves general reactivity);
shutdown: back to synchronous wait, which means no asynchronous interrupts within the loop;
wenzelm [Tue, 05 Jan 2010 23:38:10 +0100] rev 34277
added Future.promise/fulfill -- promised futures that are fulfilled by external means;
Future.value: official result assignment -- produces immutable ref;
Future.shutdown: raw_wait keeps raw task attributes, e.g. asynchronous interrupts of toplevel;
Task_Queue: passive tasks track dependencies, but lack any evaluation process;
tuned;