76 lines
2.4 KiB
Java
76 lines
2.4 KiB
Java
/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.microbench.buffer;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufUtil;
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import io.netty.buffer.Unpooled;
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import io.netty.microbench.util.AbstractMicrobenchmark;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.Measurement;
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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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import org.openjdk.jmh.annotations.TearDown;
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import org.openjdk.jmh.annotations.Warmup;
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@State(Scope.Benchmark)
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@Warmup(iterations = 10)
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@Measurement(iterations = 25)
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public class SlicedByteBufBenchmark extends AbstractMicrobenchmark {
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private ByteBuf slicedByteBuf;
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private ByteBuf slicedAbstractByteBuf;
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private String ascii;
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@Setup
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public void setup() {
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// Use buffer sizes that will also allow to write UTF-8 without grow the buffer
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ByteBuf buffer = Unpooled.buffer(512).retain();
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slicedByteBuf = buffer.slice(0, 256);
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slicedAbstractByteBuf = buffer.slice(0, 256);
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if (slicedByteBuf.getClass() == slicedAbstractByteBuf.getClass()) {
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throw new IllegalStateException();
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}
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StringBuilder asciiSequence = new StringBuilder(128);
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for (int i = 0; i < 128; i++) {
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asciiSequence.append('a');
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}
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ascii = asciiSequence.toString();
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}
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@TearDown
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public void tearDown() {
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slicedByteBuf.release();
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slicedAbstractByteBuf.release();
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}
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@Benchmark
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public void writeAsciiStringSlice() {
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slicedByteBuf.writerIndex(0);
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ByteBufUtil.writeAscii(slicedByteBuf, ascii);
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}
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@Benchmark
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public void writeAsciiStringSliceAbstract() {
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slicedAbstractByteBuf.writerIndex(0);
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ByteBufUtil.writeAscii(slicedAbstractByteBuf, ascii);
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}
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}
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