Examples of io.netty.util.internal.chmv8.ConcurrentHashMapV8$TreeBin

io.netty.util.internal.chmv8.ForkJoinWorkerThread
s.oswego.edu/dl/classes/collections/RBCell.java) based in turn on Cormen, Leiserson, and Rivest "Introduction to Algorithms" (CLR). TreeBins also maintain a separate locking discipline than regular bins. Because they are forwarded via special MOVED nodes at bin heads (which can never change once established), we cannot use those nodes as locks. Instead, TreeBin extends AbstractQueuedSynchronizer to support a simple form of read-write lock. For update operations and table validation, the exclusive form of lock behaves in the same way as bin-head locks. However, lookups use shared read-lock mechanics to allow multiple readers in the absence of writers. Additionally, these lookups do not ever block: While the lock is not available, they proceed along the slow traversal path (via next-pointers) until the lock becomes available or the list is exhausted, whichever comes first. (These cases are not fast, but maximize aggregate expected throughput.) The AQS mechanics for doing this are straightforward. The lock state is held as AQS getState(). Read counts are negative; the write count (1) is positive. There are no signalling preferences among readers and writers. Since we don't need to export full Lock API, we just override the minimal AQS methods and use them directly.

    @Override
    public Executor newExecutor(int parallelism) {
        ForkJoinWorkerThreadFactory threadFactory =
                new DefaultForkJoinWorkerThreadFactory(namePrefix + '-' + executorId.getAndIncrement());


        return new ForkJoinPool(parallelism, threadFactory, DefaultUncaughtExceptionHandler.INSTANCE, true);
    }

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    @Override
    public ExecutorService newExecutorService(int parallelism) {
        ForkJoinWorkerThreadFactory threadFactory =
                new DefaultForkJoinWorkerThreadFactory(namePrefix + '-' + executorId.getAndIncrement());


        return new ForkJoinPool(parallelism, threadFactory, DefaultUncaughtExceptionHandler.INSTANCE, true);
    }

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        this.namePrefix = namePrefix;
    }


    @Override
    public Executor newExecutor(int parallelism) {
        ForkJoinWorkerThreadFactory threadFactory =
                new DefaultForkJoinWorkerThreadFactory(namePrefix + '-' + executorId.getAndIncrement());


        return new ForkJoinPool(parallelism, threadFactory, DefaultUncaughtExceptionHandler.INSTANCE, true);
    }

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        this.namePrefix = namePrefix;
    }


    @Override
    public ExecutorService newExecutorService(int parallelism) {
        ForkJoinWorkerThreadFactory threadFactory =
                new DefaultForkJoinWorkerThreadFactory(namePrefix + '-' + executorId.getAndIncrement());


        return new ForkJoinPool(parallelism, threadFactory, DefaultUncaughtExceptionHandler.INSTANCE, true);
    }

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        }


        @Override
        public ForkJoinWorkerThread newThread(ForkJoinPool pool) {
            // Note: The ForkJoinPool will create these threads as daemon threads.
            ForkJoinWorkerThread thread = new DefaultForkJoinWorkerThread(pool);
            thread.setName(namePrefix + '-' + idx.getAndIncrement());
            thread.setPriority(Thread.MAX_PRIORITY);
            return thread;
        }

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        }


        @Override
        public ForkJoinWorkerThread newThread(ForkJoinPool pool) {
            // Note: The ForkJoinPool will create these threads as daemon threads.
            ForkJoinWorkerThread thread = new DefaultForkJoinWorkerThread(pool);
            thread.setName(namePrefix + '-' + idx.getAndIncrement());
            thread.setPriority(Thread.MAX_PRIORITY);
            return thread;
        }

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io.netty.util.concurrent.DefaultExecutorFactory$DefaultForkJoinWorkerThreadFactory

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io.netty.util.concurrent.DefaultExecutorServiceFactory$DefaultForkJoinWorkerThreadFactory

org.jruby.RubyClass

org.jruby.RubyObject

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