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 package jdk.vm.ci.hotspot.services;
  24 
  25 import jdk.vm.ci.code.CompiledCode;
  26 import jdk.vm.ci.code.InstalledCode;
  27 import jdk.vm.ci.hotspot.HotSpotCodeCacheProvider;
  28 import jdk.vm.ci.services.JVMCIPermission;
  29 
  30 /**
  31  * Service-provider class for responding to VM events.
  32  */
  33 public abstract class HotSpotVMEventListener {
  34 
  35     private static Void checkPermission() {
  36         SecurityManager sm = System.getSecurityManager();
  37         if (sm != null) {
  38             sm.checkPermission(new JVMCIPermission());
  39         }
  40         return null;
  41     }
  42 
  43     @SuppressWarnings("unused")
  44     HotSpotVMEventListener(Void ignore) {
  45     }
  46 
  47     /**
  48      * Initializes a new instance of this class.
  49      *
  50      * @throws SecurityException if a security manager has been installed and it denies
  51      *             {@link JVMCIPermission}
  52      */
  53     protected HotSpotVMEventListener() {
  54         this(checkPermission());
  55     }
  56 
  57     /**
  58      * Notifies this client that the VM is shutting down.
  59      */
  60     public void notifyShutdown() {
  61     }
  62 
  63     /**
  64      * Notify on successful install into the code cache.
  65      *
  66      * @param hotSpotCodeCacheProvider
  67      * @param installedCode
  68      * @param compiledCode
  69      */
  70     @SuppressWarnings("unexportedinapi")
  71     public void notifyInstall(HotSpotCodeCacheProvider hotSpotCodeCacheProvider, InstalledCode installedCode, CompiledCode compiledCode) {
  72     }
  73 
  74     /**
  75      * Notify on completion of a bootstrap.
  76      */
  77     public void notifyBootstrapFinished() {
  78     }
  79 }