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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.text;
import com.yahoo.io.ByteWriter;
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
/**
* It is what it says
*
* @author bratseth
*/
public class XMLWriterMicroBenchmark {
private final ByteArrayOutputStream output;
private final XMLWriter xmlWriter;
public XMLWriterMicroBenchmark(boolean optimize) {
// setup
output=new ByteArrayOutputStream();
Charset cs = Charset.forName("utf-8");
CharsetEncoder encoder = cs.newEncoder();
xmlWriter=new XMLWriter(new ByteWriter(output, encoder), optimize);
}
public void benchmark(int sizeInK,boolean verifyOutput) {
System.out.println("Warming up...");
writeStrings(1000); // warm-up
System.out.println("Starting benchmark...");
long startTime=System.currentTimeMillis();
writeStrings(sizeInK);
long endTime=System.currentTimeMillis();
System.out.println("Done.\nWriting " + sizeInK + "k strings took " + (endTime-startTime) + "ms");
if (verifyOutput) {
System.out.println("First 1k of output:");
String result=null;
try { result=output.toString("utf-8"); } catch (UnsupportedEncodingException e) { throw new RuntimeException(e); }
System.out.println(result.substring(0,Math.min(500,result.length())));
}
}
private void writeStrings(int sizeInK) {
for (int i=0; i<1000*sizeInK; i++) {
xmlWriter.openTag("dummytag").content(i,false).closeTag();
}
}
public static void main(String[] args) {
System.out.println("Unoptimized: -------------------------");
new XMLWriterMicroBenchmark(false).benchmark(10000,false);
System.out.println("Optimized: ------------------------");
new XMLWriterMicroBenchmark(true).benchmark(10000,false);
}
}
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