/*
 * Copyright (c) 2014, 2015, Dynatrace and/or its affiliates. All rights reserved.
 *
 * This file is part of the Lock Contention Tracing Subsystem for the HotSpot
 * Virtual Machine, which is developed at Christian Doppler Laboratory on
 * Monitoring and Evolution of Very-Large-Scale Software Systems. Please
 * contact us at <http://mevss.jku.at/> if you need additional information
 * or have any questions.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP
#define SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP

#include "runtime/thread.hpp"

class TraceReaderThread: public JavaThread {
private:
  oop _object;
  volatile bool _is_polling_queue;

  TraceReaderThread(oop obj);

  static void trace_reader_thread_entry(JavaThread* thread, TRAPS);

public:
  virtual ~TraceReaderThread();

  virtual bool is_TraceReader_thread() const { return true; }

  void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf);

  static TraceReaderThread * start(Handle flushq, Handle freeq, TRAPS);

  bool is_polling_queue() { return _is_polling_queue; }
  void set_is_polling_queue(bool polling) {
    assert(_is_polling_queue != polling, "flip only");
    _is_polling_queue = polling;
  }

  void shutdown(TRAPS);
};

#endif /* SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP */