1/*
2 * Copyright (c) 2015, 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/g1/g1SurvivorRegions.hpp"
27#include "gc/g1/heapRegion.hpp"
28#include "utilities/growableArray.hpp"
29#include "utilities/debug.hpp"
30
31G1SurvivorRegions::G1SurvivorRegions() :
32 _regions(new (ResourceObj::C_HEAP, mtGC) GrowableArray<HeapRegion*>(8, true, mtGC)),
33 _used_bytes(0) {}
34
35void G1SurvivorRegions::add(HeapRegion* hr) {
36 assert(hr->is_survivor(), "should be flagged as survivor region");
37 _regions->append(hr);
38}
39
40uint G1SurvivorRegions::length() const {
41 return (uint)_regions->length();
42}
43
44void G1SurvivorRegions::convert_to_eden() {
45 for (GrowableArrayIterator<HeapRegion*> it = _regions->begin();
46 it != _regions->end();
47 ++it) {
48 HeapRegion* hr = *it;
49 hr->set_eden_pre_gc();
50 }
51 clear();
52}
53
54void G1SurvivorRegions::clear() {
55 _regions->clear();
56 _used_bytes = 0;
57}
58
59void G1SurvivorRegions::add_used_bytes(size_t used_bytes) {
60 _used_bytes += used_bytes;
61}
62