1/*
2 * Copyright (c) 2012, 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#include "precompiled.hpp"
25
26#include "gc/shared/collectedHeap.hpp"
27#include "gc/shared/gcArguments.hpp"
28#include "gc/shared/gcConfiguration.hpp"
29#include "memory/universe.hpp"
30#include "oops/compressedOops.hpp"
31#include "runtime/arguments.hpp"
32#include "runtime/globals.hpp"
33#include "utilities/debug.hpp"
34
35GCName GCConfiguration::young_collector() const {
36 if (UseG1GC) {
37 return G1New;
38 }
39
40 if (UseParallelGC) {
41 return ParallelScavenge;
42 }
43
44 if (UseConcMarkSweepGC) {
45 return ParNew;
46 }
47
48 if (UseZGC || UseShenandoahGC) {
49 return NA;
50 }
51
52 return DefNew;
53}
54
55GCName GCConfiguration::old_collector() const {
56 if (UseG1GC) {
57 return G1Old;
58 }
59
60 if (UseConcMarkSweepGC) {
61 return ConcurrentMarkSweep;
62 }
63
64 if (UseParallelOldGC) {
65 return ParallelOld;
66 }
67
68 if (UseZGC) {
69 return Z;
70 }
71
72 if (UseShenandoahGC) {
73 return Shenandoah;
74 }
75
76 return SerialOld;
77}
78
79uint GCConfiguration::num_parallel_gc_threads() const {
80 return ParallelGCThreads;
81}
82
83uint GCConfiguration::num_concurrent_gc_threads() const {
84 return ConcGCThreads;
85}
86
87bool GCConfiguration::uses_dynamic_gc_threads() const {
88 return UseDynamicNumberOfGCThreads;
89}
90
91bool GCConfiguration::is_explicit_gc_concurrent() const {
92 return ExplicitGCInvokesConcurrent;
93}
94
95bool GCConfiguration::is_explicit_gc_disabled() const {
96 return DisableExplicitGC;
97}
98
99bool GCConfiguration::has_pause_target_default_value() const {
100 return FLAG_IS_DEFAULT(MaxGCPauseMillis);
101}
102
103uintx GCConfiguration::pause_target() const {
104 return MaxGCPauseMillis;
105}
106
107uintx GCConfiguration::gc_time_ratio() const {
108 return GCTimeRatio;
109}
110
111bool GCTLABConfiguration::uses_tlabs() const {
112 return UseTLAB;
113}
114
115size_t GCTLABConfiguration::min_tlab_size() const {
116 return MinTLABSize;
117}
118
119uint GCTLABConfiguration::tlab_refill_waste_limit() const {
120 return TLABRefillWasteFraction;
121}
122
123intx GCSurvivorConfiguration::max_tenuring_threshold() const {
124 return MaxTenuringThreshold;
125}
126
127intx GCSurvivorConfiguration::initial_tenuring_threshold() const {
128 return InitialTenuringThreshold;
129}
130
131size_t GCHeapConfiguration::max_size() const {
132 return MaxHeapSize;
133}
134
135size_t GCHeapConfiguration::min_size() const {
136 return MinHeapSize;
137}
138
139size_t GCHeapConfiguration::initial_size() const {
140 return InitialHeapSize;
141}
142
143bool GCHeapConfiguration::uses_compressed_oops() const {
144 return UseCompressedOops;
145}
146
147CompressedOops::Mode GCHeapConfiguration::narrow_oop_mode() const {
148 return CompressedOops::mode();
149}
150
151uint GCHeapConfiguration::object_alignment_in_bytes() const {
152 return ObjectAlignmentInBytes;
153}
154
155int GCHeapConfiguration::heap_address_size_in_bits() const {
156 return BitsPerHeapOop;
157}
158
159bool GCYoungGenerationConfiguration::has_max_size_default_value() const {
160 return FLAG_IS_DEFAULT(MaxNewSize);
161}
162
163uintx GCYoungGenerationConfiguration::max_size() const {
164 return MaxNewSize;
165}
166
167uintx GCYoungGenerationConfiguration::min_size() const {
168 return NewSize;
169}
170
171intx GCYoungGenerationConfiguration::new_ratio() const {
172 return NewRatio;
173}
174