【发布时间】:2014-07-15 15:20:14
【问题描述】:
我有一个线程,女巫正在测试一个套接字通道选择器。 如果套接字通道已连接并且可以读取,它应该启动一个消息处理线程,在该线程中读取和处理消息。 我需要启动处理程序线程,因为有很多事情要做,并且需要时间来完成它们。
主线程:
while (true) {
try {
// Wait for an event one of the registered channels
this.selector.select();
// Iterate over the set of keys for which events are available
Iterator selectedKeys = this.selector.selectedKeys().iterator();
while (selectedKeys.hasNext()) {
SelectionKey key = (SelectionKey) selectedKeys.next();
selectedKeys.remove();
if (!key.isValid()) {
continue;
}
// Check what event is available and deal with it
if (key.isAcceptable()) {
this.accept(key);
}
if (key.isReadable()) {
this.read(key);
}
}
} catch (IOException e) {
e.printStackTrace();
}
try {
Thread.sleep(200);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
读取功能:
private void read(SelectionKey key) throws IOException {
// For an accept to be pending the channel must be a server socket channel.
SocketChannel clientSocketChanel = (SocketChannel) key.channel();
WebCommandHandler commands = new WebCommandHandler(clientSocketChanel);
if (clientSocketChanel.isConnected()) {
Thread cThread = new Thread(commands);
cThread.setName("Message handler");
cThread.start();
}
}
问题是,当处理线程被执行时,给定的socketchannel已经被关闭了。 如果我不运行线程,只有我在调用 run() 方法,那么套接字不会关闭,所以我认为主线程迭代正在关闭给定的 SocketChannel。有人可以帮我找出解决方法吗,我怎样才能让 SocketChannel 保持打开状态,直到处理程序线程停止工作?
编辑
在启动新线程之前,我可能应该从选择器中“注销”SocketChannel...如何从 Seelctor 注销 socketChannel?
【问题讨论】:
标签: java multithreading socketchannel