--- old/src/share/vm/code/pcDesc.hpp
          +++ new/src/share/vm/code/pcDesc.hpp

   1    1  /*
   2    2   * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
   3    3   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4    4   *
   5    5   * This code is free software; you can redistribute it and/or modify it
   6    6   * under the terms of the GNU General Public License version 2 only, as
   7    7   * published by the Free Software Foundation.
   8    8   *
   9    9   * This code is distributed in the hope that it will be useful, but WITHOUT
  10   10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11   11   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12   12   * version 2 for more details (a copy is included in the LICENSE file that
  13   13   * accompanied this code).
  14   14   *
  15   15   * You should have received a copy of the GNU General Public License version
  16   16   * 2 along with this work; if not, write to the Free Software Foundation,
  17   17   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18   18   *
  19   19   * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20   20   * CA 95054 USA or visit www.sun.com if you need additional information or
  21   21   * have any questions.
  22   22   *
  23   23   */
  24   24  
  25   25  // PcDescs map a physical PC (given as offset from start of nmethod) to
  26   26  // the corresponding source scope and byte code index.
  27   27  
  28   28  class nmethod;
  29   29  
  30   30  class PcDesc VALUE_OBJ_CLASS_SPEC {

  31   31    friend class VMStructs;
  32   32   private:
  33   33    int _pc_offset;           // offset from start of nmethod
  34   34    int _scope_decode_offset; // offset for scope in nmethod
  35   35    int _obj_decode_offset;
  36   36  
  37   37    union PcDescFlags {
  38   38      int word;
  39   39      struct {
  40   40        unsigned int reexecute: 1;
       41 +      unsigned int is_method_handle_invoke: 1;
  41   42      } bits;
  42   43      bool operator ==(const PcDescFlags& other) { return word == other.word; }
  43   44    } _flags;
  44   45  
  45   46   public:
  46   47    int pc_offset() const           { return _pc_offset;   }
  47   48    int scope_decode_offset() const { return _scope_decode_offset; }
  48   49    int obj_decode_offset() const   { return _obj_decode_offset; }
  49   50  
  50   51    void set_pc_offset(int x)           { _pc_offset           = x; }

  51   52    void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
  52   53    void set_obj_decode_offset(int x)   { _obj_decode_offset   = x; }
  53   54  
  54   55    // Constructor (only used for static in nmethod.cpp)
  55   56    // Also used by ScopeDesc::sender()]
  56   57    PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
  57   58  
  58   59    enum {
  59   60      // upper and lower exclusive limits real offsets:
  60   61      lower_offset_limit = -1,
  61   62      upper_offset_limit = (unsigned int)-1 >> 1
  62   63    };
  63   64  
  64   65    // Flags

  65   66    bool     should_reexecute()              const { return _flags.bits.reexecute; }
  66   67    void set_should_reexecute(bool z)              { _flags.bits.reexecute = z;    }
  67   68  
  68   69    // Does pd refer to the same information as pd?
  69   70    bool is_same_info(const PcDesc* pd) {
  70   71      return _scope_decode_offset == pd->_scope_decode_offset &&
  71   72        _obj_decode_offset == pd->_obj_decode_offset &&
  72   73        _flags == pd->_flags;
  73   74    }
  74   75  
       76 +  bool     is_method_handle_invoke()       const { return _flags.bits.is_method_handle_invoke;     }
       77 +  void set_is_method_handle_invoke(bool z)       {        _flags.bits.is_method_handle_invoke = z; }
       78 +
  75   79    // Returns the real pc
  76   80    address real_pc(const nmethod* code) const;
  77   81  
  78   82    void print(nmethod* code);
  79   83    bool verify(nmethod* code);
  80   84  };
    

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