Examples with SimpleTaskScheduler abs.backend.java.scheduling.SimpleTaskScheduler used on opensource projects

Example 1 with SimpleTaskScheduler

use of abs.backend.java.scheduling.SimpleTaskScheduler in project abstools by abstools.

the class Cog method setupAPI.

private static void setupAPI() {
    thisClass.setName("Cog");
    thisClass.addMethod(/*List<Process>*/
    "getQueue", new ABSClosure() {

        @Override
        public ABSValue exec(ABSDynamicObject t, ABSValue... params) {
            // TODO
            return ABSUnit.UNIT;
        }
    });
    thisClass.addMethod(/*ABSUnit*/
    "info", new ABSClosure() {

        @Override
        public ABSValue exec(ABSDynamicObject t, ABSValue... params) {
            COG cog = (COG) t.getFieldValue_Internal("cog");
            System.out.println("Cog scheduler " + cog.getScheduler().toString());
            if (cog.getScheduler() instanceof SimpleTaskScheduler) {
                SimpleTaskScheduler sch = (SimpleTaskScheduler) cog.getScheduler();
                TaskSchedulingStrategy strat = sch.getSchedulingStrategy();
                System.out.println("Strategy " + strat);
            }
            return ABSUnit.UNIT;
        }
    });
    thisClass.addMethod(/*ABSUnit*/
    "setScheduler", new ABSClosure() {

        @Override
        public ABSValue exec(ABSDynamicObject t, ABSValue... params) {
            COG cog = (COG) t.getFieldValue_Internal("cog");
            if (!(cog.getScheduler() instanceof SimpleTaskScheduler)) {
                throw new DynamicException("For user-defined scheduling to work, the Scheduler must be an instance of " + SimpleTaskScheduler.class.getName() + " (use \"-taskscheduler=simple\")");
            }
            // The user-defined scheduler
            final ABSDynamicObject userScheduler = (ABSDynamicObject) params[0];
            // Create a new scheduling strategy that invokes the user-defined scheduler's "schedule" method
            // - convert TaskSchedulingStrategy's List<TaskInfo> to ProcessScheduler's List<Process>
            // - convert returned Process to TaskInfo.
            // custom TaskSchedulingStrategy
            TaskSchedulingStrategy strategy = new TaskSchedulingStrategy() {

                @Override
                public synchronized TaskInfo schedule(final TaskScheduler scheduler, final List<TaskInfo> schedulableTasks) {
                    System.out.println("Scheduling (" + schedulableTasks.size() + " processes in queue)...");
                    // Remember TaskInfos based on their Pids to speed things up a little
                    HashMap<Long, TaskInfo> taskMap = new HashMap<>();
                    // Convert List<TaskInfo> to ArrayList<ABSProcess>
                    ArrayList<ABSProcess> processes = new ArrayList<>();
                    for (TaskInfo task : schedulableTasks) {
                        taskMap.put(task.id, task);
                        // TODO set: pid, method, arrival, cost, deadline, start, finish, critical, value
                        ABSProcess proc = new ABSProcess(task.task.getID(), task.task.getCall().methodName(), 0, 0, 0, 0, 0, false, 0);
                        processes.add(proc);
                        System.out.println("\t" + proc.toString());
                    }
                    // FIXME
                    return schedulableTasks.get(0);
                }
            };
            // Connect the strategy to the cog's scheduler
            System.out.println(cog.toString() + ": Setting TaskSchedulingStrategy to: " + userScheduler.getClassName());
            // move the userScheduler object to the Cog
            // this WILL cause problems if the user associates the scheduler with multiple cogs!!
            // userScheduler.setCOG(cog);
            SimpleTaskScheduler scheduler = (SimpleTaskScheduler) cog.getScheduler();
            scheduler.setSchedulingStrategy(strategy);
            return ABSUnit.UNIT;
        }
    });
}