test/jdk/java/net/httpclient/http2/server/ExceptionallyCloseable.java
author dfuchs
Mon, 27 Nov 2017 16:40:01 +0000
branchhttp-client-branch
changeset 55892 9f345a976249
parent 55818 src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/internal/common/ExceptionallyCloseable.java@725576a6821e
child 55973 4d9b002587db
permissions -rw-r--r--
http-client-branch: improve coverage for ExceptionallyCloseable
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/*
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 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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import java.io.Closeable;
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import java.io.IOException;
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/**
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 * Implemented by closeable objects which might be able to report
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 * an error when closed due to exceptional conditions.
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 */
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public interface ExceptionallyCloseable extends Closeable {
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    /**
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     * Called when an instance of {@code ExceptionallyCloseable} is closed
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     * due to some exceptional condition revealed by {@code cause}.
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     *
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     * @implSpec The default implementation of this method simply calls
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     *           {@link #close()}. Implementation of this interface are
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     *           suppose to override this method in order to ensure that
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     *           the cause is properly reported.
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     *
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     * @param cause The reason for which the object is closed.
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     * @throws IOException if {@link #close()} fails.
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     */
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    public default void closeExceptionally(Throwable cause) throws IOException {
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        close();
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    }
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    public static void close(Throwable t, Closeable c) throws IOException {
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        if (c instanceof ExceptionallyCloseable) {
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            ((ExceptionallyCloseable)c).closeExceptionally(t);
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        } else {
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            c.close();
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        }
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    }
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}