Examples of org.jboss.netty.buffer.DirectChannelBufferFactory

org.jboss.netty.buffer.DirectChannelBufferFactory

A {@link ChannelBufferFactory} which pre-allocates a large chunk of directbuffer and returns its slice on demand. Direct buffers are reclaimed via {@link ReferenceQueue} in most JDK implementations, and therefore they aredeallocated less efficiently than an ordinary heap buffer. Consequently, a user will get {@link OutOfMemoryError} when one tries to allocate smalldirect buffers more often than the GC throughput of direct buffers, which is much lower than the GC throughput of heap buffers. This factory avoids this problem by allocating a large chunk of pre-allocated direct buffer and reducing the number of the garbage collected internal direct buffer objects. @author The Netty Project (netty-dev@lists.jboss.org) @author Trustin Lee (tlee@redhat.com) @version $Rev: 597 $, $Date: 2008-12-08 18:50:00 +0900 (Mon, 08 Dec 2008) $

    ExecutorService serverWorkerExecutor = createExecutorService(serverWorkerThreadPoolSize,
                                                                 "router-server-worker-thread-%d");
    serverBootstrap = new ServerBootstrap(
      new NioServerSocketChannelFactory(serverBossExecutor, serverWorkerExecutor));
    serverBootstrap.setOption("backlog", serverConnectionBacklog);
    serverBootstrap.setOption("child.bufferFactory", new DirectChannelBufferFactory());


    // Setup the pipeline factory
    serverBootstrap.setPipelineFactory(
      new ChannelPipelineFactory() {
        @Override

        pipeline.addLast("request-encoder", new HttpRequestEncoder());
        return pipeline;
      }
    });


    clientBootstrap.setOption("bufferFactory", new DirectChannelBufferFactory());
  }

    private final AtomicInteger returns = new AtomicInteger(0); // buffer objects returned (timed/reset)
    private final AtomicInteger sleeps = new AtomicInteger(0); // threshold induced sleeps (timed/reset)
    private final AtomicInteger leaseOut = new AtomicInteger(0); // outstanding leased buffers


    BufferAllocator() {
        bufferFactory = DIRECT ? new DirectChannelBufferFactory() : new HeapChannelBufferFactory();
        pools = new SizedPool[24];
        // init pools
        int size = BASE_SIZE;
        for (int i = 0; i < pools.length; i++) {
            pools[i] = new SizedPool(size);

Examples of org.jboss.netty.buffer.DirectChannelBufferFactory

Related Classes of org.jboss.netty.buffer.DirectChannelBufferFactory