从一个线程写入socketchannel并从另一线程选择

Question

Can I write to SocketChannel from one thread, while same SocketChannel may be being selected by Selector#select() for IO operations in other thread? Is it thread-safe? Or do I have to delegate ByteBuffer s to other thread (which do Selector#select() indefinitely), to be written to SocketChannel every after Selector#select() calls.

Also, is SelectionKey#interestOps(int) to set interest operations thread-safe? Or do I have to delegate same to other thread (which do Selector#select() indefinitely).

Answer 1

Yes you can,in general. The thread that's blocked in select() isn't using the ByteBuffer while it's blocked. If it does so elsewhere, of course you need to synchronize, or take some other measure.