1 /*
2  * Copyright (c) 2017, 2019, 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
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22  */
23 
24 import java.util.ArrayList;
25 import java.util.List;
26 import java.io.File;
27 import java.nio.file.Files;
28 import java.io.IOException;
29 import java.io.BufferedInputStream;
30 import java.util.stream.Collectors;
31 import java.io.FileInputStream;
32 
33 import sun.jvm.hotspot.HotSpotAgent;
34 import sun.jvm.hotspot.debugger.*;
35 
36 import jdk.test.lib.apps.LingeredApp;
37 import jdk.test.lib.JDKToolLauncher;
38 import jdk.test.lib.JDKToolFinder;
39 import jdk.test.lib.Platform;
40 import jdk.test.lib.process.ProcessTools;
41 import jdk.test.lib.process.OutputAnalyzer;
42 import jdk.test.lib.Utils;
43 import jdk.test.lib.Asserts;
44 
45 /**
46  * @test
47  * @library /test/lib
48  * @bug 8171084
49  * @requires vm.hasSAandCanAttach & (vm.bits == "64" & os.maxMemory > 8g)
50  * @modules java.base/jdk.internal.misc
51  *          jdk.hotspot.agent/sun.jvm.hotspot
52  *          jdk.hotspot.agent/sun.jvm.hotspot.utilities
53  *          jdk.hotspot.agent/sun.jvm.hotspot.oops
54  *          jdk.hotspot.agent/sun.jvm.hotspot.debugger
55  * @run main/timeout=1800/othervm -Xmx8g TestHeapDumpForLargeArray
56  */
57 
58 public class TestHeapDumpForLargeArray {
59 
60     private static LingeredAppWithLargeArray theApp = null;
61 
attachAndDump(String heapDumpFileName, long lingeredAppPid)62     private static void attachAndDump(String heapDumpFileName,
63                                       long lingeredAppPid) throws Exception {
64 
65         JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jhsdb");
66         launcher.addToolArg("jmap");
67         launcher.addToolArg("--binaryheap");
68         launcher.addToolArg("--dumpfile");
69         launcher.addToolArg(heapDumpFileName);
70         launcher.addToolArg("--pid");
71         launcher.addToolArg(Long.toString(lingeredAppPid));
72 
73         ProcessBuilder processBuilder = new ProcessBuilder();
74         processBuilder.command(launcher.getCommand());
75         System.out.println(
76             processBuilder.command().stream().collect(Collectors.joining(" ")));
77 
78         OutputAnalyzer SAOutput = ProcessTools.executeProcess(processBuilder);
79         SAOutput.shouldHaveExitValue(0);
80         SAOutput.shouldNotContain("Heap segment size overflow");
81         SAOutput.shouldContain("truncating to");
82         SAOutput.shouldContain("heap written to");
83         SAOutput.shouldContain(heapDumpFileName);
84         System.out.println(SAOutput.getOutput());
85 
86     }
87 
main(String... args)88     public static void main (String... args) throws Exception {
89 
90         String heapDumpFileName = "LargeArrayHeapDump.bin";
91 
92         File heapDumpFile = new File(heapDumpFileName);
93         if (heapDumpFile.exists()) {
94             heapDumpFile.delete();
95         }
96 
97         try {
98             // Need to add the default arguments first to have explicit
99             // -Xmx8g last, otherwise test will fail if default
100             // arguments contain a smaller -Xmx.
101             List<String> vmArgs = new ArrayList<String>();
102             vmArgs.addAll(Utils.getVmOptions());
103             vmArgs.add("-XX:+UsePerfData");
104             vmArgs.add("-Xmx8g");
105 
106             theApp = new LingeredAppWithLargeArray();
107             LingeredApp.startApp(vmArgs, theApp);
108             attachAndDump(heapDumpFileName, theApp.getPid());
109         } finally {
110             LingeredApp.stopApp(theApp);
111             heapDumpFile.delete();
112         }
113     }
114 }
115