/*
 * 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_TRACEBUFFER_HPP
#define SHARE_VM_EVTRACE_TRACEBUFFER_HPP

#include "memory/allocation.hpp"

class Thread;

class TraceBuffer: public CHeapObj<mtEventTracing> {
public:
  TraceBuffer(size_t capacity);
  virtual ~TraceBuffer() { }

  void reset();
  bool reserve(size_t nbytes);
  size_t filled_size() const;

  void* operator new(size_t size, size_t capacity) throw();

  TraceBuffer  *queue_next;
  u1           *top;
  const u1     *end;
  Thread       *owner;
  s8            owner_id;
  u1            data[0]; // follows here
};

#include "evtrace/traceBuffer.inline.hpp"

#endif /* SHARE_VM_EVTRACE_TRACEBUFFER_HPP */