src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/VM.java

*** 1,7 ****
  /*
!  * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 85,94 ****
--- 85,95 ----
    private Threads      threads;
    private ObjectSynchronizer synchronizer;
    private JNIHandles   handles;
    private Interpreter  interpreter;
    private StubRoutines stubRoutines;
+   private FileMapInfo  fileMapInfo;
    private Bytes        bytes;
  
    /** Flag indicating if JVMTI support is included in the build */
    private boolean      isJvmtiSupported;
    /** Flags indicating whether we are attached to a core, C1, or C2 build */
*** 715,724 ****
--- 716,735 ----
        vmregImpl = new VMRegImpl();
      }
      return vmregImpl;
    }
  
+   public FileMapInfo getFileMapInfo() {
+     if (!isSharingEnabled()) {
+       return null;
+     }
+     if (fileMapInfo == null) {
+       fileMapInfo = new FileMapInfo();
+     }
+     return fileMapInfo;
+   }
+ 
    public Bytes getBytes() {
      if (bytes == null) {
        bytes = new Bytes(debugger.getMachineDescription());
      }
      return bytes;