1/*
2 * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24#ifndef SHARE_GC_SHENANDOAH_SHENANDOAHMETRICS_HPP
25#define SHARE_GC_SHENANDOAH_SHENANDOAHMETRICS_HPP
26
27#include "gc/shenandoah/shenandoahHeap.hpp"
28
29class ShenandoahMetrics {
30private:
31 ShenandoahMetrics() {}
32
33public:
34 static double internal_fragmentation();
35 static double external_fragmentation();
36};
37
38class ShenandoahMetricsSnapshot : public StackObj {
39private:
40 ShenandoahHeap* _heap;
41 size_t _used_before, _used_after;
42 double _if_before, _if_after;
43 double _ef_before, _ef_after;
44
45public:
46 ShenandoahMetricsSnapshot();
47
48 void snap_before();
49 void snap_after();
50
51 bool is_good_progress();
52};
53
54#endif // SHARE_GC_SHENANDOAH_SHENANDOAHMETRICS_HPP
55