1/*
2 * Copyright (c) 2018, 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/g1CollectedHeap.hpp"
27#include "gc/g1/g1HeterogeneousHeapPolicy.hpp"
28#include "gc/g1/g1Policy.hpp"
29#include "gc/g1/heterogeneousHeapRegionManager.hpp"
30
31G1HeterogeneousHeapPolicy::G1HeterogeneousHeapPolicy(STWGCTimer* gc_timer) :
32 G1Policy(gc_timer), _manager(NULL) {}
33
34// We call the super class init(), after which we provision young_list_target_length() regions in dram.
35void G1HeterogeneousHeapPolicy::init(G1CollectedHeap* g1h, G1CollectionSet* collection_set) {
36 G1Policy::init(g1h, collection_set);
37 _manager = HeterogeneousHeapRegionManager::manager();
38 _manager->adjust_dram_regions((uint)young_list_target_length(), G1CollectedHeap::heap()->workers());
39}
40
41// After a collection pause, young list target length is updated. So we need to make sure we have enough regions in dram for young gen.
42void G1HeterogeneousHeapPolicy::record_collection_pause_end(double pause_time_ms, size_t cards_scanned, size_t heap_used_bytes_before_gc) {
43 G1Policy::record_collection_pause_end(pause_time_ms, cards_scanned, heap_used_bytes_before_gc);
44 _manager->adjust_dram_regions((uint)young_list_target_length(), G1CollectedHeap::heap()->workers());
45}
46
47// After a full collection, young list target length is updated. So we need to make sure we have enough regions in dram for young gen.
48void G1HeterogeneousHeapPolicy::record_full_collection_end() {
49 G1Policy::record_full_collection_end();
50 _manager->adjust_dram_regions((uint)young_list_target_length(), G1CollectedHeap::heap()->workers());
51}
52
53bool G1HeterogeneousHeapPolicy::force_upgrade_to_full() {
54 if (_manager->has_borrowed_regions()) {
55 return true;
56 }
57 return false;
58}
59