/*

 * Copyright 2001-2007 Sun Microsystems, Inc.  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.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

// The Concurrent Mark GC Thread (could be several in the future).

// This is copied from the Concurrent Mark Sweep GC Thread

// Still under construction.

class ConcurrentMark;

class ConcurrentMarkThread: public ConcurrentGCThread {

  friend class VMStructs;

  double _vtime_start;  // Initial virtual time.

  double _vtime_accum;  // Accumulated virtual time.

  double _vtime_mark_accum;

  double _vtime_count_accum;

 public:

  virtual void run();

 private:

  ConcurrentMark*                  _cm;

  bool                             _started;

  bool                             _in_progress;

  void sleepBeforeNextCycle();

  static SurrogateLockerThread*         _slt;

 public:

  // Constructor

  ConcurrentMarkThread(ConcurrentMark* cm);

  static void makeSurrogateLockerThread(TRAPS);

  static SurrogateLockerThread* slt() { return _slt; }

  // Printing

  void print();

  // Total virtual time so far.

  double vtime_accum();

  // Marking virtual time so far

  double vtime_mark_accum();

  // Counting virtual time so far.

  double vtime_count_accum() { return _vtime_count_accum; }

  ConcurrentMark* cm()                           { return _cm;     }

  void            set_started()                  { _started = true;   }

  void            clear_started()                { _started = false;  }

  bool            started()                      { return _started;   }

  void            set_in_progress()              { _in_progress = true;   }

  void            clear_in_progress()            { _in_progress = false;  }

  bool            in_progress()                  { return _in_progress;   }

  // Yield for GC

  void            yield();

  // shutdown

  static void stop();

};