/*

 * Copyright (c) 1998, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_RUNTIME_OBJECTMONITOR_INLINE_HPP

#define SHARE_VM_RUNTIME_OBJECTMONITOR_INLINE_HPP

inline intptr_t ObjectMonitor::is_entered(TRAPS) const {

  if (THREAD == _owner || THREAD->is_lock_owned((address) _owner)) {

    return 1;

  }

  return 0;

}

inline markOop ObjectMonitor::header() const {

  return _header;

}

inline volatile markOop* ObjectMonitor::header_addr() {

  assert((intptr_t)this == (intptr_t)&_header, "sync code expects this");

  return &_header;

}

inline void ObjectMonitor::set_header(markOop hdr) {

  _header = hdr;

}

inline jint ObjectMonitor::count() const {

  return _count;

}

inline jint ObjectMonitor::waiters() const {

  return _waiters;

}

inline void* ObjectMonitor::owner() const {

  return _owner;

}

inline void ObjectMonitor::clear() {

  assert(_header, "Fatal logic error in ObjectMonitor header!");

  assert(_count == 0, "Fatal logic error in ObjectMonitor count!");

  assert(_waiters == 0, "Fatal logic error in ObjectMonitor waiters!");

  assert(_recursions == 0, "Fatal logic error in ObjectMonitor recursions!");

  assert(_object != NULL, "Fatal logic error in ObjectMonitor object!");

  assert(_owner == 0, "Fatal logic error in ObjectMonitor owner!");

  _header = NULL;

  _object = NULL;

}

inline void* ObjectMonitor::object() const {

  return _object;

}

inline void* ObjectMonitor::object_addr() {

  return (void *)(&_object);

}

inline void ObjectMonitor::set_object(void* obj) {

  _object = obj;

}

inline bool ObjectMonitor::check(TRAPS) {

  if (THREAD != _owner) {

    if (THREAD->is_lock_owned((address) _owner)) {

      _owner = THREAD;  // regain ownership of inflated monitor

      assert (_recursions == 0, "invariant") ;

    } else {

      check_slow(THREAD);

      return false;

    }

  }

  return true;

}

// return number of threads contending for this monitor

inline jint ObjectMonitor::contentions() const {

  return _count;

}

// Do NOT set _count = 0. There is a race such that _count could

// be set while inflating prior to setting _owner

// Just use Atomic::inc/dec and assert 0 when monitor put on free list

inline void ObjectMonitor::set_owner(void* owner) {

  _owner = owner;

  _recursions = 0;

}

#endif // SHARE_VM_RUNTIME_OBJECTMONITOR_INLINE_HPP