Examples of DefaultPGroup

groovyx.gpars.group.DefaultPGroup
Provides logical grouping for actors, agents and dataflow tasks and operators. Each group has an underlying thread pool, which will perform actions on behalf of the users belonging to the group. {@code Actors} created through the {@code DefaultPGroup.actor} method will automatically belong to the groupthrough which they were created, just like agents created through the {@code agent} or {@code fairAgent}methods or dataflow tasks and operators created through the {@code task} or {@code operator} methods.Uses a pool of non-daemon threads. The {@code DefaultPGroup} class implements the {@code Pool} interfacethrough {@code @Delegate}.
```
 def group = new DefaultPGroup() group.resize 1 def actor = group.actor { react { message -> println message } }.start() actor.send 'Hi!' . . . group.shutdown() 
```
Otherwise, if constructing {@code Actors} directly through their constructors, the {@code AbstractPooledActor.parallelGroup} property, which defaults to the {@code Actors.defaultActorPGroup}, can be set before the actor is started.
```
 def group = new DefaultPGroup() def actor = new MyActor() actor.parallelGroup = group actor.start() . . . group.shutdown() 
```
@author Vaclav Pech

Examples of groovyx.gpars.group.DefaultPGroup

    public int totalMessages() {
        return repeat;
    }


    public long timeThroughput(final int reps, final int numberOfClients) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException, InstantiationException, InterruptedException {
        group = new DefaultPGroup(new FJPool(maxClients));
        repeatsPerClient = repeat / numberOfClients;//MESSAGE quota for each pair of actors


        long totalTime = 0L;
        for (int i = 0; i < reps; i++) {

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Examples of groovyx.gpars.group.DefaultPGroup

    }


    private void setupLatencyBenchmark(final int numberOfClients) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException, InstantiationException {


        totalDuration = 0L;
        group = new DefaultPGroup(new FJPool(maxClients));
        latch = new CountDownLatch(numberOfClients);
        repeatsPerClient = repeat / numberOfClients;
        clients = new ArrayList<Actor>();


        for (int i = 0; i < numberOfClients; i++) {

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Examples of groovyx.gpars.group.DefaultPGroup


    @Test
    public void testDataflowVariable() throws Throwable {
        final List<String> logMessages = new ArrayList<String>();


        final DefaultPGroup group = new DefaultPGroup(10);


        // variable can be assigned once only, read allowed multiple times
        final DataflowVariable<Integer> a = new DataflowVariable<Integer>();


        // group.task will use thread from pool and uses it to execute value bind
        group.task(new Runnable() {
            public void run() {
                // first thread binding value succeeds, other attempts would fail with IllegalStateException
                logMessages.add("Value bound");
                a.bind(10);
            }
        });


        // group.task will use thread from pool and uses it to execute call method
        final Promise<?> result = group.task(new Callable() {
            public Object call() throws Exception {
                // getVal will wait for the value to be assigned
                final int result = a.getVal() + 10;
                logMessages.add("Value calculated");
                return result;

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Examples of groovyx.gpars.group.DefaultPGroup

    public Pipeline(final DataflowReadChannel output) {
        this(Dataflow.retrieveCurrentDFPGroup(), output);
    }


    public Pipeline(final Pool pool, final DataflowReadChannel output) {
        this(new DefaultPGroup(pool), output);
        if (pool == null) throw new IllegalArgumentException("A pipeline needs a thread pool to work with.");
    }

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Examples of groovyx.gpars.group.DefaultPGroup

        separate(Dataflow.retrieveCurrentDFPGroup(), params, outputs, code);
    }


    @Override
    public void separate(Pool pool, Map<String, Object> params, List<DataflowWriteChannel<?>> outputs, Closure<List<Object>> code) {
        separate(new DefaultPGroup(pool), params, outputs, code);
    }

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Examples of groovyx.gpars.group.DefaultPGroup

        return chainWith(Dataflow.retrieveCurrentDFPGroup(), closure);
    }


    @Override
    public final <V> DataflowReadChannel<V> chainWith(final Pool pool, final Closure<V> closure) {
        return chainWith(new DefaultPGroup(pool), closure);
    }

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Examples of groovyx.gpars.group.DefaultPGroup

        return chainWith(Dataflow.retrieveCurrentDFPGroup(), params, closure);
    }


    @Override
    public final <V> DataflowReadChannel<V> chainWith(final Pool pool, final Map<String, Object> params, final Closure<V> closure) {
        return chainWith(new DefaultPGroup(pool), params, closure);
    }

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Examples of groovyx.gpars.group.DefaultPGroup

        into(Dataflow.retrieveCurrentDFPGroup(), target);
    }


    @Override
    public void into(final Pool pool, final DataflowWriteChannel<T> target) {
        into(new DefaultPGroup(pool), target);
    }

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Examples of groovyx.gpars.group.DefaultPGroup

        into(Dataflow.retrieveCurrentDFPGroup(), params, target);
    }


    @Override
    public void into(final Pool pool, final Map<String, Object> params, final DataflowWriteChannel<T> target) {
        into(new DefaultPGroup(pool), params, target);
    }

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Examples of groovyx.gpars.group.DefaultPGroup

        split(Dataflow.retrieveCurrentDFPGroup(), target1, target2);
    }


    @Override
    public void split(final Pool pool, final DataflowWriteChannel<T> target1, final DataflowWriteChannel<T> target2) {
        split(new DefaultPGroup(pool), target1, target2);
    }

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