AIO中的AsynchronousServerSocketChannel.accept源码分析

asynchronousServerSocketChannel.accept(this,new AcceptCompletionHandler());

的方式接收客户端的连接，那它是怎么做的呢，我们做下源码分析。

这个accept方法进入了实现类

AsynchronousServerSocketChannelImpl的accept方法，如下：

public final <A> void accept(A var1, CompletionHandler<AsynchronousSocketChannel, ? super A> var2) {
        if(var2 == null) {
            throw new NullPointerException("\'handler\' is null");
        } else {
            this.implAccept(var1, var2);
        }
    }

AccessControlContext var5 = System.getSecurityManager() == null?null:AccessController.getContext();
                PendingFuture var6 = new PendingFuture(this, var2, var1);
                WindowsAsynchronousServerSocketChannelImpl.AcceptTask var7 = new WindowsAsynchronousServerSocketChannelImpl.AcceptTask(var3, var5, var6);
                var6.setContext(var7);
                if(!this.accepting.compareAndSet(false, true)) {
                    throw new AcceptPendingException();
                } else {
                    if(Iocp.supportsThreadAgnosticIo()) {
                        var7.run();
                    } else {
                        Invoker.invokeOnThreadInThreadPool(this, var7);
                    }

                    return var6;
    static <V, A> void invokeUnchecked(CompletionHandler<V, ? super A> var0, A var1, V var2, Throwable var3) {
        if(var3 == null) {
            var0.completed(var2, var1);
        } else {
            var0.failed(var3, var1);
        }
        Thread.interrupted();