Examples of co.paralleluniverse.strands.Strand

co.paralleluniverse.strands.Strand
A Strand is either a Thread or a Fiber @author pron

            child.watch = null;
        }
    }


    private Strand createStrandForActor(Strand oldStrand, Actor actor) {
        final Strand strand;
        if (oldStrand != null)
            strand = Strand.clone(oldStrand, actor);
        else
            strand = new Fiber(actor);
        actor.setStrand(strand);

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    @SuppressWarnings("LeakingThisInConstructor")
    public Fiber(String name, FiberScheduler scheduler, int stackSize, SuspendableCallable<V> target) {
        this.name = name;
        this.fid = nextFiberId();
        this.scheduler = scheduler;
        Strand parent = Strand.currentStrand();
        // this.parent = Strand.currentStrand();
        this.target = target;
        this.task = scheduler != null ? scheduler.newFiberTask(this) : new FiberForkJoinScheduler.FiberForkJoinTask(this, null);
        this.initialStackSize = stackSize;
        this.stack = new Stack(this, stackSize > 0 ? stackSize : DEFAULT_STACK_SIZE);

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    public static FlightRecorder getGlobalFlightRecorder() {
        return flightRecorder;
    }


    public static void exit(int code) {
        final Strand currentStrand = Strand.currentStrand();
        if (flightRecorder != null) {
            flightRecorder.record(1, "DEBUG EXIT REQUEST ON STRAND " + currentStrand + ": " + Arrays.toString(currentStrand.getStackTrace()));
            flightRecorder.stop();
        }


        if (requestShutdown.compareAndSet(false, true)) {
            System.err.println("DEBUG EXIT REQUEST ON STRAND " + currentStrand 
                    + (currentStrand.isFiber() ? " (THREAD " + Thread.currentThread() + ")" : "")
                    + ": SHUTTING DOWN THE JVM.");
            Thread.dumpStack();
            if (!isUnitTest()) // Calling System.exit() in gradle unit tests breaks gradle
                System.exit(code);
            else

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     * @param nanos timeout in nanosecs, used only if timed is true
     * @return matched item, or e if unmatched on interrupt or timeout
     */
    private Message awaitMatch(Node s, Node pred, Message e, boolean timed, long nanos) throws SuspendExecution {
        long lastTime = timed ? System.nanoTime() : 0L;
        Strand w = Strand.currentStrand();
        int spins = (w.isFiber() ? 0 : -1); // no spins in fiber; otherwise, initialized after first item and cancel checks
        ThreadLocalRandom randomYields = null; // bound if needed


        if (spins == 0)
            requestUnpark(s, w);


        for (;;) {
            Object item = s.item;


            if (item == CHANNEL_CLOSED)
                setReceiveClosed();


            if (item != e) {                  // matched
                // assert item != s;
                s.forgetContents();           // avoid garbage
                return this.<Message>cast(item);
            }
            if ((w.isInterrupted() || (timed && nanos <= 0))
                    && s.casItem(e, s)) {     // cancel
                unsplice(pred, s);
                return e;
            }

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    /**
     * Removes and signals threads from queue for phase.
     */
    private void releaseWaiters(int phase) {
        QNode q;   // first element of queue
        Strand t;  // its strand
        AtomicReference<QNode> head = (phase & 1) == 0 ? evenQ : oddQ;
        // int total = 0;  // contention profiling
        // int failed = 0; // contention profiling
        while ((q = head.get()) != null
                && q.phase != (int) (root.state >>> PHASE_SHIFT)) {

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    private int abortWait(int phase) {
        AtomicReference<QNode> head = (phase & 1) == 0 ? evenQ : oddQ;
        // int total = 0;  // contention profiling
        //int failed = 0; // contention profiling
        for (;;) {
            Strand t;
            QNode q = head.get();
            int p = (int) (root.state >>> PHASE_SHIFT);
            if (q == null || ((t = q.strand) != null && q.phase == p)) {
                // if (total > 0)
                //    System.out.println("PHASER: " + Fiber.currentFiber() + " abortWait: " + failed + '/' + total + " " + ((double)failed / total));

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    public static FlightRecorder getGlobalFlightRecorder() {
        return flightRecorder;
    }


    public static void exit(int code) {
        final Strand currentStrand = Strand.currentStrand();
        if (flightRecorder != null) {
            flightRecorder.record(1, "DEBUG EXIT REQUEST ON STRAND " + currentStrand + ": " + Arrays.toString(currentStrand.getStackTrace()));
            flightRecorder.stop();
        }


        if (requestShutdown.compareAndSet(false, true)) {
            System.err.println("DEBUG EXIT REQUEST ON STRAND " + currentStrand
                    + (currentStrand.isFiber() ? " (THREAD " + Thread.currentThread() + ")" : "")
                    + ": SHUTTING DOWN THE JVM.");
            Thread.dumpStack();
            if (!isUnitTest()) // Calling System.exit() in gradle unit tests breaks gradle
                System.exit(code);
            else

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        return select(-1, null);
    }


    @Override
    public Object register() {
        Strand s = Strand.currentStrand();
        if (waiter != null && !waiter.equals(s))
            throw new IllegalMonitorStateException("A strand is already registered");
        this.waiter = Strand.currentStrand();


        final int n = actions.size();

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    @SuppressWarnings("LeakingThisInConstructor")
    public Fiber(String name, FiberScheduler scheduler, int stackSize, SuspendableCallable<V> target) {
        this.name = name;
        this.fid = nextFiberId();
        this.scheduler = scheduler;
        Strand parent = Strand.currentStrand(); // retaining the parent as a field is a huge, complex memory leak
        this.target = target;
        this.task = scheduler != null ? scheduler.newFiberTask(this) : new FiberForkJoinScheduler.FiberForkJoinTask(this);
        this.initialStackSize = stackSize;
        this.stack = new Stack(this, stackSize > 0 ? stackSize : DEFAULT_STACK_SIZE);
        this.state = State.NEW;

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    private static Fiber getCurrentFiber() {
        final Thread currentThread = Thread.currentThread();
        if (FiberForkJoinScheduler.isFiberThread(currentThread))
            return FiberForkJoinScheduler.getTargetFiber(currentThread);
        else {
            Strand s = currentStrand.get();
            return s instanceof Fiber ? (Fiber) s : null;
        }
    }

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Related Classes of co.paralleluniverse.strands.Strand

co.paralleluniverse.actors.Actor

co.paralleluniverse.actors.ActorRunner

co.paralleluniverse.actors.behaviors.BasicGenBehavior

co.paralleluniverse.actors.behaviors.LocalSupervisor

co.paralleluniverse.actors.behaviors.SupervisorActor

co.paralleluniverse.common.util.Debug

co.paralleluniverse.fibers.Fiber

co.paralleluniverse.strands.channels.Selector

co.paralleluniverse.strands.channels.TransferChannel

co.paralleluniverse.strands.concurrent.AbstractQueuedLongSynchronizer

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