src/share/vm/runtime/timer.hpp

rev 7854 : imported patch 8027962-per-phase-timing-measurements-for-strong-roots-processing
rev 7855 : [mq]: 8027962-bengt-suggestions

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2013, 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, 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.
*** 101,110 ****
--- 101,127 ----
    // Activation
    void suspend()  { if (_active) _t.stop();  }
    void resume()   { if (_active) _t.start(); }
  };
  
+ class PhaseTimeData : public StackObj {
+ public:
+   virtual bool active() const = 0;
+   virtual void set_value(uint phase, double value) = 0;
+ };
+ 
+ class TrackPhaseTime : public StackObj {
+  private:
+   PhaseTimeData* _data;
+   uint           _phase;
+   jlong          _last;
+  public:
+   // Constructors
+   TrackPhaseTime(PhaseTimeData *data, uint phase);
+   ~TrackPhaseTime();
+ };
+ 
  class TraceCPUTime: public StackObj {
   private:
    bool _active;                 // true if times will be measured and printed
    bool _print_cr;               // if true print carriage return at end
    double _starting_user_time;   // user time at start of measurement