1 /*
   2  * Copyright (c) 2004, 2015, 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 5050487
  27  * @summary Check that Instrumentation methods can execute from a runtime
  28  *          shutdown hook
  29  * @run build FromShutdownHook
  30  * @run shell MakeJAR.sh basicAgent
  31  * @run main/othervm -javaagent:basicAgent.jar FromShutdownHook FromShutdownHook
  32  */
  33 import java.lang.instrument.Instrumentation;
  34 
  35 public class FromShutdownHook
  36     extends ASimpleInstrumentationTestCase
  37 {
  38     public FromShutdownHook(String name) {
  39         super(name);
  40     }
  41     public static void main(String args[] ) throws Throwable {
  42         FromShutdownHook fsh = new FromShutdownHook(args[0]);
  43         fsh.runTest();
  44     }
  45 
  46     Instrumentation ins;
  47 
  48     protected final void doRunTest() {
  49         // keep reference to Instrumentation
  50         ins = fInst;
  51 
  52         // install shutdown hook
  53         Runtime.getRuntime().addShutdownHook(new Thread() {
  54             public void run() {
  55                 System.err.println(ins.getAllLoadedClasses().length +
  56                         " classes loaded.");
  57             }
  58         });
  59     }
  60 }