/*

 * Copyright (c) 2001, 2017, 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.

 *

 * 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.

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#ifndef SHARE_VM_GC_G1_G1CONCURRENTREFINETHREAD_HPP

#define SHARE_VM_GC_G1_G1CONCURRENTREFINETHREAD_HPP

#include "gc/g1/dirtyCardQueue.hpp"

#include "gc/shared/concurrentGCThread.hpp"

// Forward Decl.

class CardTableEntryClosure;

class G1ConcurrentRefine;

// One or more G1 Concurrent Refinement Threads may be active if concurrent

// refinement is in progress.

class G1ConcurrentRefineThread: public ConcurrentGCThread {

  friend class VMStructs;

  friend class G1CollectedHeap;

  double _vtime_start;  // Initial virtual time.

  double _vtime_accum;  // Accumulated virtual time.

  uint _worker_id;

  uint _worker_id_offset;

  bool _active;

  Monitor* _monitor;

  G1ConcurrentRefine* _cr;

  void wait_for_completed_buffers();

  void set_active(bool x) { _active = x; }

  // Deactivate this thread.

  void deactivate();

  bool is_primary() { return (_worker_id == 0); }

  void run_service();

  void stop_service();

public:

  G1ConcurrentRefineThread(G1ConcurrentRefine* cg1r, uint worker_id);

  bool is_active();

  // Activate this thread.

  void activate();

  // Total virtual time so far.

  double vtime_accum() { return _vtime_accum; }

};

#endif // SHARE_VM_GC_G1_G1CONCURRENTREFINETHREAD_HPP