src/share/vm/classfile/classFileStream.hpp

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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.

@@ -55,19 +55,29 @@
   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);
+  
+#if INCLUDE_JFR
+  u1* clone_buffer() const;
+  const char* const clone_source() const;
+#endif
+  
  public:
   // Constructor
-  ClassFileStream(u1* buffer, int length, const char* source);
+  ClassFileStream(u1* buffer, int length, const char* source, bool need_verify = false);
 
   // 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) {

@@ -138,8 +148,14 @@
     _current += 4 * length;
   }
 
   // Tells whether eos is reached
   bool at_eos() const          { return _current == _buffer_end; }
+
+#if INCLUDE_JFR
+  ClassFileStream* clone() const;
+  
+  bool need_verify() const { return _need_verify; }
+#endif
 };
 
 #endif // SHARE_VM_CLASSFILE_CLASSFILESTREAM_HPP