1 /*
2  * Copyright (c) 2017, 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 jdk.internal.net.http;
27 
28 import java.io.IOException;
29 import java.nio.channels.SelectableChannel;
30 import java.util.Objects;
31 import java.util.function.Consumer;
32 
33 /**
34  * An asynchronous event which is triggered only once from the selector manager
35  * thread as soon as event registration are handled.
36  */
37 final class AsyncTriggerEvent extends AsyncEvent{
38 
39     private final Runnable trigger;
40     private final Consumer<? super IOException> errorHandler;
AsyncTriggerEvent(Consumer<? super IOException> errorHandler, Runnable trigger)41     AsyncTriggerEvent(Consumer<? super IOException> errorHandler,
42                       Runnable trigger) {
43         super(0);
44         this.trigger = Objects.requireNonNull(trigger);
45         this.errorHandler = Objects.requireNonNull(errorHandler);
46     }
47     /** Returns null */
48     @Override
channel()49     public SelectableChannel channel() { return null; }
50     /** Returns 0 */
51     @Override
interestOps()52     public int interestOps() { return 0; }
53     @Override
handle()54     public void handle() { trigger.run(); }
55     @Override
abort(IOException ioe)56     public void abort(IOException ioe) { errorHandler.accept(ioe); }
57     @Override
repeating()58     public boolean repeating() { return false; }
59 }
60