/*
 * 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_TRACEMACROS_HPP
#define SHARE_VM_EVTRACE_TRACEMACROS_HPP

#include "runtime/atomic.hpp"

#define EVTRACE_DECLARE_TRACKED_CLASS_FIELDS \
  jint _tracing_known;

#define EVTRACE_INIT_TRACKED_CLASS \
  do { _tracing_known = 0; } while (0)

#define EVTRACE_DEFINE_TRACKED_CLASS_METHODS                 \
  bool is_tracing_known() const {                            \
    return _tracing_known;                                   \
  }                                                          \
                                                             \
  bool atomic_mark_tracing_known() {                         \
    return (Atomic::cmpxchg(1, &_tracing_known, 0) == 0);    \
  }                                                          \
                                                             \
  void reset_tracing_known() {                               \
    /* permitted at safepoint only, no CAS required */       \
    _tracing_known = 0;                                      \
  }

#endif /* SHARE_VM_EVTRACE_TRACEMACROS_HPP */