TestInstanceKlassSize.java revision 12290:8953c0318163 
1/*
2 * Copyright (c) 2015, 2016, 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.
18 *
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
21 * questions.
22 */
23
24import sun.jvm.hotspot.HotSpotAgent;
25import sun.jvm.hotspot.utilities.SystemDictionaryHelper;
26import sun.jvm.hotspot.oops.InstanceKlass;
27import sun.jvm.hotspot.debugger.*;
28
29import java.util.ArrayList;
30import java.util.List;
31import java.util.stream.Collectors;
32
33import jdk.test.lib.JDKToolLauncher;
34import jdk.test.lib.Platform;
35import jdk.test.lib.process.ProcessTools;
36import jdk.test.lib.process.OutputAnalyzer;
37import jdk.test.lib.Utils;
38import jdk.test.lib.apps.LingeredApp;
39import jdk.test.lib.Asserts;
40
41import java.io.*;
42import java.util.*;
43
44/*
45 * @test
46 * @library /test/lib
47 * @modules java.base/jdk.internal.misc
48 * @compile -XDignore.symbol.file=true
49 *          --add-modules=jdk.hotspot.agent
50 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED
51 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED
52 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED
53 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.debugger=ALL-UNNAMED
54 *          TestInstanceKlassSize.java
55 * @run main/othervm
56 *          --add-modules=jdk.hotspot.agent
57 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED
58 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED
59 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED
60 *          --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.debugger=ALL-UNNAMED
61 *          TestInstanceKlassSize
62 */
63
64public class TestInstanceKlassSize {
65
66    private static String getJcmdInstanceKlassSize(OutputAnalyzer output,
67                                                   String instanceKlassName) {
68        for (String s : output.asLines()) {
69            if (s.contains(instanceKlassName)) {
70                String tokens[];
71                System.out.println(s);
72                tokens = s.split("\\s+");
73                return tokens[3];
74            }
75        }
76        return null;
77    }
78
79    private static OutputAnalyzer jcmd(Long pid,
80                                       String... toolArgs) throws Exception {
81        ProcessBuilder processBuilder = new ProcessBuilder();
82        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jcmd");
83        launcher.addToolArg(Long.toString(pid));
84        if (toolArgs != null) {
85            for (String toolArg : toolArgs) {
86                launcher.addToolArg(toolArg);
87            }
88        }
89
90        processBuilder.command(launcher.getCommand());
91        System.out.println(
92            processBuilder.command().stream().collect(Collectors.joining(" ")));
93        return ProcessTools.executeProcess(processBuilder);
94    }
95
96    private static void startMeWithArgs() throws Exception {
97
98        LingeredApp app = null;
99        OutputAnalyzer output = null;
100        try {
101            List<String> vmArgs = new ArrayList<String>();
102            vmArgs.add("-XX:+UsePerfData");
103            vmArgs.addAll(Utils.getVmOptions());
104            app = LingeredApp.startApp(vmArgs);
105            System.out.println ("Started LingeredApp with pid " + app.getPid());
106        } catch (Exception ex) {
107            ex.printStackTrace();
108            throw new RuntimeException(ex);
109        }
110        try {
111            String[] instanceKlassNames = new String[] {
112                                              " java.lang.Object",
113                                              " java.util.Vector",
114                                              " sun.util.PreHashedMap",
115                                              " java.lang.String",
116                                              " java.lang.Thread",
117                                              " java.lang.Byte",
118                                          };
119            String[] toolArgs = {
120                "--add-modules=jdk.hotspot.agent",
121                "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED",
122                "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED",
123                "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED",
124                "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.debugger=ALL-UNNAMED",
125                "TestInstanceKlassSize",
126                Long.toString(app.getPid())
127            };
128
129            OutputAnalyzer jcmdOutput = jcmd(
130                           app.getPid(),
131                           "GC.class_stats", "VTab,ITab,OopMap,KlassBytes");
132            ProcessBuilder processBuilder = ProcessTools
133                                            .createJavaProcessBuilder(toolArgs);
134            output = ProcessTools.executeProcess(processBuilder);
135            System.out.println(output.getOutput());
136            output.shouldHaveExitValue(0);
137
138            // Check whether the size matches that which jcmd outputs
139            for (String instanceKlassName : instanceKlassNames) {
140                System.out.println ("Trying to match for" + instanceKlassName);
141                String jcmdInstanceKlassSize = getJcmdInstanceKlassSize(
142                                                      jcmdOutput,
143                                                      instanceKlassName);
144                Asserts.assertNotNull(jcmdInstanceKlassSize,
145                    "Could not get the instance klass size from the jcmd output");
146                for (String s : output.asLines()) {
147                    if (s.contains(instanceKlassName)) {
148                       Asserts.assertTrue(
149                          s.contains(jcmdInstanceKlassSize),
150                          "The size computed by SA for" +
151                          instanceKlassName + " does not match.");
152                    }
153                }
154            }
155        } finally {
156            LingeredApp.stopApp(app);
157        }
158    }
159
160    private static void SAInstanceKlassSize(int pid,
161                                            String[] SAInstanceKlassNames) {
162        HotSpotAgent agent = new HotSpotAgent();
163        try {
164            agent.attach(pid);
165        }
166        catch (DebuggerException e) {
167            System.out.println(e.getMessage());
168            System.err.println("Unable to connect to process ID: " + pid);
169
170            agent.detach();
171            e.printStackTrace();
172        }
173
174        for (String SAInstanceKlassName : SAInstanceKlassNames) {
175            InstanceKlass ik = SystemDictionaryHelper.findInstanceKlass(
176                               SAInstanceKlassName);
177            Asserts.assertNotNull(ik,
178                String.format("Unable to find instance klass for %s", ik));
179            System.out.println("SA: The size of " + SAInstanceKlassName +
180                               " is " + ik.getSize());
181        }
182        agent.detach();
183    }
184
185    public static void main(String[] args) throws Exception {
186
187        if (!Platform.shouldSAAttach()) {
188            System.out.println("SA attach not expected to work - test skipped.");
189            return;
190        }
191
192        if (args == null || args.length == 0) {
193            System.out.println ("No args run. Starting with args now.");
194            startMeWithArgs();
195        } else {
196            String[] SAInstanceKlassNames = new String[] {
197                                                "java.lang.Object",
198                                                "java.util.Vector",
199                                                "sun.util.PreHashedMap",
200                                                "java.lang.String",
201                                                "java.lang.Thread",
202                                                "java.lang.Byte"
203                                             };
204            SAInstanceKlassSize(Integer.parseInt(args[0]), SAInstanceKlassNames);
205        }
206    }
207}
208
209