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      1 /*
      2  * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
      3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
      4  *
      5  * This code is free software; you can redistribute it and/or modify it
      6  * under the terms of the GNU General Public License version 2 only, as
      7  * published by the Free Software Foundation.  Oracle designates this
      8  * particular file as subject to the "Classpath" exception as provided
      9  * by Oracle in the LICENSE file that accompanied this code.
     10  *
     11  * This code is distributed in the hope that it will be useful, but WITHOUT
     12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14  * version 2 for more details (a copy is included in the LICENSE file that
     15  * accompanied this code).
     16  *
     17  * You should have received a copy of the GNU General Public License version
     18  * 2 along with this work; if not, write to the Free Software Foundation,
     19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
     20  *
     21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
     22  * or visit www.oracle.com if you need additional information or have any
     23  * questions.
     24  */
     25 
     26 package sun.nio.ch;
     27 
     28 import java.nio.channels.Channel;
     29 import java.io.FileDescriptor;
     30 import java.io.IOException;
     31 
     32 
     33 /**
     34  * An interface that allows translation (and more!).
     35  *
     36  * @since 1.4
     37  */
     38 
     39 public interface SelChImpl extends Channel {
     40 
     41     FileDescriptor getFD();
     42 
     43     int getFDVal();
     44 
     45     /**
     46      * Adds the specified ops if present in interestOps. The specified
     47      * ops are turned on without affecting the other ops.
     48      *
     49      * @return  true iff the new value of sk.readyOps() set by this method
     50      *          contains at least one bit that the previous value did not
     51      *          contain
     52      */
     53     public boolean translateAndUpdateReadyOps(int ops, SelectionKeyImpl sk);
     54 
     55     /**
     56      * Sets the specified ops if present in interestOps. The specified
     57      * ops are turned on, and all other ops are turned off.
     58      *
     59      * @return  true iff the new value of sk.readyOps() set by this method
     60      *          contains at least one bit that the previous value did not
     61      *          contain
     62      */
     63     public boolean translateAndSetReadyOps(int ops, SelectionKeyImpl sk);
     64 
     65     void translateAndSetInterestOps(int ops, SelectionKeyImpl sk);
     66 
     67     int validOps();
     68 
     69     void kill() throws IOException;
     70 
     71 }
     72