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 | |
31 | G1HeterogeneousHeapPolicy::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. |
35 | void 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. |
42 | void 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. |
48 | void 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 | |
53 | bool G1HeterogeneousHeapPolicy::force_upgrade_to_full() { |
54 | if (_manager->has_borrowed_regions()) { |
55 | return true; |
56 | } |
57 | return false; |
58 | } |
59 | |