1 /*

     2  * Copyright (c) 2015, 2018, 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 java.net.http.internal;

    27 

    28 import java.io.IOException;

    29 import java.nio.channels.SelectableChannel;

    30 

    31 /**

    32  * Event handling interface from HttpClientImpl's selector.

    33  *

    34  * If REPEATING is set then the event is not cancelled after being posted.

    35  */

    36 abstract class AsyncEvent {

    37 

    38     public static final int REPEATING = 0x2; // one off event if not set

    39 

    40     protected final int flags;

    41 

    42     AsyncEvent() {

    43         this(0);

    44     }

    45 

    46     AsyncEvent(int flags) {

    47         this.flags = flags;

    48     }

    49 

    50     /** Returns the channel */

    51     public abstract SelectableChannel channel();

    52 

    53     /** Returns the selector interest op flags OR'd */

    54     public abstract int interestOps();

    55 

    56     /** Called when event occurs */

    57     public abstract void handle();

    58 

    59     /**

    60      * Called when an error occurs during registration, or when the selector has

    61      * been shut down. Aborts all exchanges.

    62      *

    63      * @param ioe  the IOException, or null

    64      */

    65     public abstract void abort(IOException ioe);

    66 

    67     public boolean repeating() {

    68         return (flags & REPEATING) != 0;

    69     }

    70 }