1 /*
2  * Copyright (c) 2014, 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.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 package org.openjdk.bench.javax.xml;
24 
25 import org.openjdk.jmh.annotations.Benchmark;
26 import org.openjdk.jmh.annotations.Level;
27 import org.openjdk.jmh.annotations.Setup;
28 import org.openjdk.jmh.annotations.TearDown;
29 
30 import javax.xml.stream.XMLInputFactory;
31 import javax.xml.stream.XMLStreamConstants;
32 import javax.xml.stream.XMLStreamReader;
33 import java.io.ByteArrayInputStream;
34 import java.util.HashMap;
35 import java.util.LinkedList;
36 import java.util.Map;
37 
38 public class STAX extends AbstractXMLMicro {
39 
40     /** Live data */
41     public Map<String, LinkedList<String>> liveData;
42 
43     @Setup(Level.Iteration)
setupLiveData()44     public void setupLiveData() {
45         Map<String, LinkedList<String>> map = new HashMap<>();
46         // Somewhere around 100 MB live, but fragmented to start with.
47         for (int i = 0; i < 1000; i++) {
48             LinkedList<String> list = new LinkedList<>();
49             String key = "Dummy linked list " + i;
50             list.add(key);
51             for (int j = 0; j < 1000; j++) {
52                 list.add("Dummy string " + i + "." + j);
53             }
54             map.put(key, list);
55         }
56         // thread safe, will only be one
57         liveData = map;
58     }
59 
60     @TearDown(Level.Iteration)
teardownLiveData()61     public void teardownLiveData() {
62         liveData = null;
63     }
64 
65     @Benchmark
testParse()66     public int testParse() throws Exception {
67         int intDummy = 0;
68         byte[] bytes = getFileBytesFromResource(doc);
69         ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
70         XMLInputFactory factory = XMLInputFactory.newInstance();
71 
72         XMLStreamReader parser = factory.createXMLStreamReader(bais);
73         int acc;
74         do {
75             acc = parser.next();
76             intDummy += acc;
77         } while (acc != XMLStreamConstants.END_DOCUMENT);
78         return intDummy;
79     }
80 
81 }
82