1 /*
   2  * Copyright (c) 2010, 2011, 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 import sun.misc.Version;
  25 
  26 public class NativeInstanceFilterTarg {
  27 
  28     public static void main(String args[]) {
  29         boolean runTest = jvmSupportsJVMTI_12x();
  30         String s1 = "abc";
  31         String s2 = "def";
  32         latch(s1);
  33         s1.intern();
  34         if (runTest) {
  35             s2.intern(); // this is the call that generates events that ought
  36                          // to be filtered out.
  37         } else {
  38             System.out.println("Neutering test since JVMTI 1.2 not supported");
  39         }
  40     }
  41 
  42     // Used by debugger to get an instance to filter with
  43     public static String latch(String s) { return s; }
  44 
  45     public static boolean jvmSupportsJVMTI_12x() {
  46         // This fix requires the JVM to support JVMTI 1.2, which doesn't
  47         // happen until HSX 20.0, build 05.
  48         int major = Version.jvmMajorVersion();
  49         int minor = Version.jvmMinorVersion();
  50         int micro = Version.jvmMicroVersion();
  51         int build = Version.jvmBuildNumber();
  52 
  53         return (major > 20 || major == 20 &&
  54                    (minor > 0 || micro > 0 || build >= 5));
  55     }
  56 }