rev 9529 : 8034960: Serviceability tests using @library failing with java.lang.NoClassDefFoundError

   1 /*
   2  * Copyright (c) 2013, 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 
  24 /*
  25  * @test
  26  * @bug 8028994
  27  * @author Staffan Larsen
  28  * @library /lib/testlibrary

  29  * @run main CheckOrigin
  30  */
  31 
  32 import com.sun.management.HotSpotDiagnosticMXBean;
  33 import com.sun.management.VMOption;
  34 import com.sun.management.VMOption.Origin;
  35 import com.sun.tools.attach.VirtualMachine;
  36 import java.io.File;
  37 import java.io.FileWriter;
  38 import java.io.InputStream;
  39 import java.io.PrintWriter;
  40 import java.lang.management.ManagementFactory;
  41 import java.util.Map;
  42 import jdk.testlibrary.ProcessTools;
  43 import sun.tools.attach.HotSpotVirtualMachine;
  44 
  45 public class CheckOrigin {
  46 
  47     private static HotSpotDiagnosticMXBean mbean;
  48 
  49     public static void main(String... args) throws Exception {
  50         if (args.length == 0) {
  51             // start a process that has options set in a number of different ways
  52 
  53             File flagsFile = File.createTempFile("CheckOriginFlags", null);
  54             try (PrintWriter pw =
  55                    new PrintWriter(new FileWriter(flagsFile))) {
  56                 pw.println("+PrintSafepointStatistics");
  57             }
  58 
  59             ProcessBuilder pb = ProcessTools.
  60                 createJavaProcessBuilder(
  61                     "-XX:+PrintGCDetails",
  62                     "-XX:Flags=" + flagsFile.getAbsolutePath(),
  63                     "-cp", System.getProperty("test.class.path") + File.pathSeparator + getToolsJarPath(),
  64                     "CheckOrigin",
  65                     "-runtests");
  66 
  67             Map<String, String> env = pb.environment();
  68             env.put("_JAVA_OPTIONS", "-XX:+PrintOopAddress");
  69 
  70             pb.redirectOutput(ProcessBuilder.Redirect.INHERIT);
  71             pb.redirectError(ProcessBuilder.Redirect.INHERIT);
  72             Process p = pb.start();
  73             int exit = p.waitFor();
  74             System.out.println("sub process exit == " + exit);
  75             if (exit != 0) {
  76                 throw new Exception("Unexpected exit code from subprocess == " + exit);
  77             }
  78         } else {
  79             mbean =
  80                 ManagementFactory.getPlatformMXBean(HotSpotDiagnosticMXBean.class);
  81 
  82             // set a few more options
  83             mbean.setVMOption("HeapDumpOnOutOfMemoryError", "true");
  84             setOptionUsingAttach("HeapDumpPath", "/a/sample/path");
  85 
  86             // check the origin field for all the options we set
  87             checkOrigin("ManagementServer", Origin.DEFAULT);
  88             checkOrigin("PrintGCDetails", Origin.VM_CREATION);
  89             checkOrigin("PrintOopAddress", Origin.ENVIRON_VAR);
  90             checkOrigin("PrintSafepointStatistics", Origin.CONFIG_FILE);
  91             checkOrigin("HeapDumpOnOutOfMemoryError", Origin.MANAGEMENT);
  92             checkOrigin("NewSize", Origin.ERGONOMIC);
  93             checkOrigin("HeapDumpPath", Origin.ATTACH_ON_DEMAND);
  94         }
  95     }
  96 
  97     private static void checkOrigin(String option, Origin origin) throws Exception
  98     {
  99         Origin o = mbean.getVMOption(option).getOrigin();
 100         if (!o.equals(origin)) {
 101             throw new Exception("Option '" + option + "' should have origin '" + origin + "' but had '" + o + "'");
 102         }
 103         System.out.println("Option '" + option + "' verified origin = '" + origin + "'");
 104     }
 105 
 106     // use attach to set a manageable vm option
 107     private static void setOptionUsingAttach(String option, String value) throws Exception {
 108         HotSpotVirtualMachine vm = (HotSpotVirtualMachine) VirtualMachine.attach(ProcessTools.getProcessId()+"");
 109         InputStream in = vm.setFlag(option, value);
 110         System.out.println("Result from setting '" + option + "' to '" + value + "' using attach:");
 111         drain(vm, in);
 112         System.out.println("-- end -- ");
 113     }
 114 
 115     // Read the stream from the target VM until EOF, print to output, then detach
 116     private static void drain(VirtualMachine vm, InputStream in) throws Exception {
 117         byte b[] = new byte[256];
 118         int n;
 119         do {
 120             n = in.read(b);
 121             if (n > 0) {
 122                 String s = new String(b, 0, n, "UTF-8");
 123                 System.out.print(s);
 124             }
 125         } while (n > 0);
 126         in.close();
 127         vm.detach();
 128     }
 129 
 130     private static String getToolsJarPath() {
 131         return System.getProperty("java.home") +
 132             "/../lib/tools.jar".replace("/", File.separator);
 133     }
 134 }
--- EOF ---