/*

 * Copyright (c) 2005, 2015, 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.

 *

 */

#include "precompiled.hpp"

#include "gc/shared/barrierSet.hpp"

#include "gc/shared/collectedHeap.hpp"

#include "gc/shared/collectedHeap.inline.hpp"

#include "memory/universe.hpp"

#include "oops/oopsHierarchy.hpp"

#include "runtime/thread.inline.hpp"

#include "utilities/globalDefinitions.hpp"

#ifdef CHECK_UNHANDLED_OOPS

void oop::register_oop() {

  assert (CheckUnhandledOops, "should only call when CheckUnhandledOops");

  if (!Universe::is_fully_initialized()) return;

  // This gets expensive, which is why checking unhandled oops is on a switch.

  Thread* t = Thread::current_or_null();

  if (t != NULL && t->is_Java_thread()) {

     frame fr = os::current_frame();

     // This points to the oop creator, I guess current frame points to caller

     assert (fr.pc(), "should point to a vm frame");

     t->unhandled_oops()->register_unhandled_oop(this, fr.pc());

  }

}

void oop::unregister_oop() {

  assert (CheckUnhandledOops, "should only call when CheckUnhandledOops");

  if (!Universe::is_fully_initialized()) return;

  // This gets expensive, which is why checking unhandled oops is on a switch.

  Thread* t = Thread::current_or_null();

  if (t != NULL && t->is_Java_thread()) {

    t->unhandled_oops()->unregister_unhandled_oop(this);

  }

}

bool oop::operator==(const oop o) const {

  assert(BarrierSet::barrier_set()->oop_equals_operator_allowed(), "Not allowed");

  return obj() == o.obj();

}

bool oop::operator!=(const volatile oop o) const {

  assert(BarrierSet::barrier_set()->oop_equals_operator_allowed(), "Not allowed");

  return obj() != o.obj();

}

#endif // CHECK_UNHANDLED_OOPS