/*+
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 * Copyright (c) 2019, 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.  Oracle designates this+
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 * particular file as subject to the "Classpath" exception as provided+
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 * by Oracle in the LICENSE file that accompanied this code.+
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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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package org.openjdk.bench.java.nio;+
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+
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import java.nio.CharBuffer;+
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import java.util.Arrays;+
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import java.util.concurrent.TimeUnit;+
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+
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import org.openjdk.jmh.annotations.Benchmark;+
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import org.openjdk.jmh.annotations.BenchmarkMode;+
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import org.openjdk.jmh.annotations.Level;+
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import org.openjdk.jmh.annotations.Mode;+
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import org.openjdk.jmh.annotations.OutputTimeUnit;+
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import org.openjdk.jmh.annotations.Param;+
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import org.openjdk.jmh.annotations.Scope;+
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import org.openjdk.jmh.annotations.Setup;+
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import org.openjdk.jmh.annotations.State;+
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+
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@BenchmarkMode(Mode.AverageTime)+
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@OutputTimeUnit(TimeUnit.NANOSECONDS)+
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@State(Scope.Thread)+
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public class CharBuffers {+
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+
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    @Param({"2", "256", "16384"})+
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    public int numChars;+
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+
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    public String str;+
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    public CharBuffer buf;+
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+
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    @Setup(Level.Iteration)+
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    public void createString() {+
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        char[] c = new char[numChars];+
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        Arrays.fill(c, 'X');+
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        str = String.valueOf(c);+
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        buf = CharBuffer.allocate(numChars);+
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    }+
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+
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    @Benchmark+
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    public CharBuffer putString() {+
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        buf.clear();+
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        return buf.put(str);+
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    }+
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+
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}+
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