| Mon, 31 May 2010 21:06:57 +0200 |
modernized some structure names, keeping a few legacy aliases;
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| Sat, 29 May 2010 15:31:15 +0200 |
future result: retain plain Interrupt for vacuous group exceptions;
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| Fri, 21 May 2010 21:28:31 +0200 |
future_job: propagate current Position.thread_data to the forked job -- this is important to provide a default position, e.g. for parallelizied Goal.prove within a package (proper command transactions are wrapped via Toplevel.setmp_thread_position);
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| Sat, 06 Feb 2010 22:06:18 +0100 |
result: Single_Assignment.var;
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| Wed, 06 Jan 2010 18:22:43 +0100 |
more robust cancelation, notably of passive futures without scheduler running;
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| Wed, 06 Jan 2010 18:14:16 +0100 |
eliminated cache, which complicates the code without making a real difference (NB: deque_towards often disrupts caching, and daisy-chaining of workers already reduces queue overhead);
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| Wed, 06 Jan 2010 15:07:56 +0100 |
tasks of canceled groups are considered "ready" -- enables to purge the queue from tasks depending on unfinished promises (also improves general reactivity);
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| Tue, 05 Jan 2010 23:38:10 +0100 |
added Future.promise/fulfill -- promised futures that are fulfilled by external means;
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| Thu, 05 Nov 2009 13:16:22 +0100 |
scheduler: clarified interrupt attributes and handling;
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| Thu, 05 Nov 2009 13:01:11 +0100 |
worker_next: plain signalling via work_available only, not scheduler_event;
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| Wed, 04 Nov 2009 21:22:35 +0100 |
avoid broadcast work_available, use daisy-chained signal instead;
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| Wed, 04 Nov 2009 20:31:36 +0100 |
worker_next: treat wait for work_available as Sleeping, not Waiting;
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| Wed, 04 Nov 2009 11:58:29 +0100 |
worker activity: distinguish between waiting (formerly active) and sleeping;
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| Wed, 04 Nov 2009 11:37:06 +0100 |
tuned;
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| Wed, 04 Nov 2009 11:30:22 +0100 |
tuned thread data;
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| Wed, 04 Nov 2009 00:29:58 +0100 |
worker_next: ensure that work_available is passed on before sleeping (was occasionally lost when worker configuration changed, causing scheduler deadlock);
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| Tue, 03 Nov 2009 19:52:09 +0100 |
slightly leaner and more direct control of worker activity etc.;
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| Thu, 22 Oct 2009 15:21:01 +0200 |
use Synchronized.assign to achieve actual immutable results;
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| Thu, 01 Oct 2009 16:27:13 +0200 |
added Task_Queue.depend (again) -- light-weight version for transitive graph;
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| Tue, 29 Sep 2009 11:49:22 +0200 |
explicit indication of Unsynchronized.ref;
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| Mon, 28 Sep 2009 12:09:18 +0200 |
added fork_deps_pri;
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| Tue, 22 Sep 2009 20:25:31 +0200 |
full reserve of worker threads -- for improved CPU utilization;
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| Sun, 20 Sep 2009 19:17:33 +0200 |
tuned tracing;
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| Sun, 20 Sep 2009 18:37:55 +0200 |
scheduler backdoor: 9999 means 1 worker;
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| Wed, 16 Sep 2009 22:46:10 +0200 |
Synchronized.value does not require locking, since assigments are atomic;
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| Thu, 27 Aug 2009 17:00:03 +0200 |
tuned tracing;
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| Sat, 01 Aug 2009 00:17:03 +0200 |
future scheduler: uninterruptible cancelation;
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| Sat, 01 Aug 2009 00:09:45 +0200 |
renamed Multithreading.regular_interrupts to Multithreading.public_interrupts;
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| Thu, 30 Jul 2009 23:37:53 +0200 |
tuned tracing;
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| Thu, 30 Jul 2009 23:06:06 +0200 |
added Multithreading.sync_wait, which turns enabled interrupts to sync ones, to ensure that wait will reaquire its lock when interrupted;
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| Tue, 28 Jul 2009 16:30:23 +0200 |
eliminated separate Future.enabled -- let Future.join fail explicitly in critical section, instead of entering sequential mode silently;
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| Tue, 28 Jul 2009 15:10:15 +0200 |
future result: Synchronized.var;
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| Tue, 28 Jul 2009 14:35:27 +0200 |
Task_Queue.dequeue: explicit thread;
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| Tue, 28 Jul 2009 14:29:25 +0200 |
more precise treatment of scheduler_event: continous pulse (50ms) instead of flooding, which was burning many CPU cycles in spare threads;
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| Tue, 28 Jul 2009 14:11:15 +0200 |
interruptible_task: unified treatment of Multithreading.with_attributes (cf. 9f6461b1c9cc);
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| Tue, 28 Jul 2009 14:04:33 +0200 |
misc tuning;
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| Mon, 27 Jul 2009 17:36:30 +0200 |
interruptible: Thread.testInterrupt before changing thread attributes;
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| Mon, 27 Jul 2009 17:12:19 +0200 |
wait: absorb spurious interrupts;
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| Mon, 27 Jul 2009 16:53:28 +0200 |
scheduler: shutdown spontaneously (after some delay) if queue is empty;
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| Mon, 27 Jul 2009 16:08:41 +0200 |
join_next: do not yield, even if overloaded, to minimize "running" tasks;
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| Mon, 27 Jul 2009 15:53:43 +0200 |
tuned tracing;
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| Mon, 27 Jul 2009 15:30:21 +0200 |
cancel: improved reactivity due to more careful broadcasting;
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| Mon, 27 Jul 2009 15:06:33 +0200 |
dequeue_towards: always return active tasks;
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| Mon, 27 Jul 2009 13:32:23 +0200 |
removed unused low-level interrupts;
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| Mon, 27 Jul 2009 12:16:58 +0200 |
tuned;
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| Mon, 27 Jul 2009 12:11:18 +0200 |
more specific conditions: scheduler_event, work_available, work_finished -- considereably reduces overhead with many threads;
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| Sat, 25 Jul 2009 00:53:47 +0200 |
tuned tracing;
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| Wed, 22 Jul 2009 10:46:35 +0200 |
future_job: more robust Exn.capture outside thread attribute change;
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| Tue, 21 Jul 2009 23:42:29 +0200 |
future_job: tight scope for interrupts, to prevent shooting ourselves in the foot via cancel_group;
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| Tue, 21 Jul 2009 20:37:31 +0200 |
added worker_group;
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| Tue, 21 Jul 2009 15:25:22 +0200 |
propagate exceptions within future groups;
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| Tue, 21 Jul 2009 13:42:48 +0200 |
tuned;
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| Tue, 21 Jul 2009 11:30:12 +0200 |
tuned tracing;
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| Sun, 19 Jul 2009 18:02:40 +0200 |
more abstract Future.is_worker;
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| Sun, 19 Jul 2009 14:14:25 +0200 |
recovered a version of dequeue_towards (cf. bb7b5a5942c7);
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| Sat, 18 Jul 2009 22:52:31 +0200 |
scheduler: tuned tracing (status);
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| Sun, 14 Jun 2009 23:24:38 +0200 |
simplified join: do not record dependencies (which are slow, but were only required for dequeue_towards);
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| Sun, 14 Jun 2009 02:21:46 +0200 |
tuned join: produce less garbage while waiting;
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| Sat, 13 Jun 2009 19:40:37 +0200 |
simplified join_results: no longer work "towards" deps, which simplifies task queue management and maintains strict bottom up discipline (without "transfer of priority" to required futures);
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| Mon, 23 Mar 2009 11:20:46 +0100 |
future scheduler: reduced wait timeout if tasks need to be canceled -- to improve reactivity of interrupts;
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