1/*
2 * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#include "precompiled.hpp"
26#include "gc/shared/collectedHeap.hpp"
27#include "gc/shared/isGCActiveMark.hpp"
28#include "memory/universe.hpp"
29#include "utilities/debug.hpp"
30
31// This class provides a method for block structured setting of the
32// _is_gc_active state without requiring accessors in CollectedHeap
33
34IsGCActiveMark::IsGCActiveMark() {
35 CollectedHeap* heap = Universe::heap();
36 assert(!heap->is_gc_active(), "Not reentrant");
37 heap->_is_gc_active = true;
38}
39
40IsGCActiveMark::~IsGCActiveMark() {
41 CollectedHeap* heap = Universe::heap();
42 assert(heap->is_gc_active(), "Sanity");
43 heap->_is_gc_active = false;
44}
45