/*

 * Copyright (c) 2002, 2019, 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/collectedHeap.hpp"

#include "gc/shared/isGCActiveMark.hpp"

#include "memory/universe.hpp"

#include "utilities/debug.hpp"

// This class provides a method for block structured setting of the

// _is_gc_active state without requiring accessors in CollectedHeap

IsGCActiveMark::IsGCActiveMark() {

  CollectedHeap* heap = Universe::heap();

  assert(!heap->is_gc_active(), "Not reentrant");

  heap->_is_gc_active = true;

}

IsGCActiveMark::~IsGCActiveMark() {

  CollectedHeap* heap = Universe::heap();

  assert(heap->is_gc_active(), "Sanity");

  heap->_is_gc_active = false;

}