1 /* 2 * Copyright (c) 2015, 2016, 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 jdk.incubator.http; 27 28 import java.nio.channels.SelectableChannel; 29 30 /** 31 * Event handling interface from HttpClientImpl's selector. 32 * 33 * If BLOCKING is set, then the channel will be put in blocking 34 * mode prior to handle() being called. If false, then it remains non-blocking. 35 * 36 * If REPEATING is set then the event is not cancelled after being posted. 37 */ 38 abstract class AsyncEvent { 39 40 public static final int BLOCKING = 0x1; // non blocking if not set 41 public static final int REPEATING = 0x2; // one off event if not set 42 43 protected final int flags; 44 45 AsyncEvent(int flags) { 46 this.flags = flags; 47 } 48 49 /** Returns the channel */ 50 public abstract SelectableChannel channel(); 51 52 /** Returns the selector interest op flags OR'd */ 53 public abstract int interestOps(); 54 55 /** Called when event occurs */ 56 public abstract void handle(); 57 58 /** Called when selector is shutting down. Abort all exchanges. */ 59 public abstract void abort(); 60 61 public boolean blocking() { 62 return (flags & BLOCKING) != 0; 63 } 64 65 public boolean repeating() { 66 return (flags & REPEATING) != 0; 67 } 68 }