src/share/vm/classfile/classFileStream.hpp

rev 8910 : full patch for jfr

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2014, 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) 1997, 2019, 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.
*** 55,73 ****
--- 55,82 ----
    u1*   _current;      // Current buffer position
    const char* _source; // Source of stream (directory name, ZIP/JAR archive name)
    bool  _need_verify;  // True if verification is on for the class file
  
    void truncated_file_error(TRAPS);
+  protected:
+   const u1* clone_buffer() const;
+   const char* const clone_source() const;
   public:
    // Constructor
    ClassFileStream(u1* buffer, int length, const char* source);
  
+   virtual const ClassFileStream* clone() const;
+ 
    // Buffer access
    u1* buffer() const           { return _buffer_start; }
    int length() const           { return _buffer_end - _buffer_start; }
    u1* current() const          { return _current; }
    void set_current(u1* pos)    { _current = pos; }
+   // for relative positioning
+   juint current_offset() const {
+     return (juint)(_current - _buffer_start);
+   }
    const char* source() const   { return _source; }
    void set_verify(bool flag)   { _need_verify = flag; }
  
    void check_truncated_file(bool b, TRAPS) {
      if (b) {