1 /*
2 * Copyright (c) 2012, 2020, 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 #include "runtime/globals_extension.hpp"
26
27 #include "gc/shared/collectedHeap.hpp"
28 #include "gc/shared/gcArguments.hpp"
29 #include "gc/shared/gcConfiguration.hpp"
30 #include "memory/universe.hpp"
31 #include "oops/compressedOops.hpp"
32 #include "runtime/arguments.hpp"
33 #include "runtime/globals.hpp"
34 #include "utilities/debug.hpp"
35
young_collector() const36 GCName GCConfiguration::young_collector() const {
37 if (UseG1GC) {
38 return G1New;
39 }
40
41 if (UseParallelGC) {
42 return ParallelScavenge;
43 }
44
45 if (UseZGC || UseShenandoahGC) {
46 return NA;
47 }
48
49 return DefNew;
50 }
51
old_collector() const52 GCName GCConfiguration::old_collector() const {
53 if (UseG1GC) {
54 return G1Old;
55 }
56
57 if (UseParallelGC) {
58 return ParallelOld;
59 }
60
61 if (UseZGC) {
62 return Z;
63 }
64
65 if (UseShenandoahGC) {
66 return Shenandoah;
67 }
68
69 return SerialOld;
70 }
71
num_parallel_gc_threads() const72 uint GCConfiguration::num_parallel_gc_threads() const {
73 return ParallelGCThreads;
74 }
75
num_concurrent_gc_threads() const76 uint GCConfiguration::num_concurrent_gc_threads() const {
77 return ConcGCThreads;
78 }
79
uses_dynamic_gc_threads() const80 bool GCConfiguration::uses_dynamic_gc_threads() const {
81 return UseDynamicNumberOfGCThreads;
82 }
83
is_explicit_gc_concurrent() const84 bool GCConfiguration::is_explicit_gc_concurrent() const {
85 return ExplicitGCInvokesConcurrent;
86 }
87
is_explicit_gc_disabled() const88 bool GCConfiguration::is_explicit_gc_disabled() const {
89 return DisableExplicitGC;
90 }
91
has_pause_target_default_value() const92 bool GCConfiguration::has_pause_target_default_value() const {
93 return FLAG_IS_DEFAULT(MaxGCPauseMillis);
94 }
95
pause_target() const96 uintx GCConfiguration::pause_target() const {
97 return MaxGCPauseMillis;
98 }
99
gc_time_ratio() const100 uintx GCConfiguration::gc_time_ratio() const {
101 return GCTimeRatio;
102 }
103
uses_tlabs() const104 bool GCTLABConfiguration::uses_tlabs() const {
105 return UseTLAB;
106 }
107
min_tlab_size() const108 size_t GCTLABConfiguration::min_tlab_size() const {
109 return MinTLABSize;
110 }
111
tlab_refill_waste_limit() const112 uint GCTLABConfiguration::tlab_refill_waste_limit() const {
113 return TLABRefillWasteFraction;
114 }
115
max_tenuring_threshold() const116 intx GCSurvivorConfiguration::max_tenuring_threshold() const {
117 return MaxTenuringThreshold;
118 }
119
initial_tenuring_threshold() const120 intx GCSurvivorConfiguration::initial_tenuring_threshold() const {
121 return InitialTenuringThreshold;
122 }
123
max_size() const124 size_t GCHeapConfiguration::max_size() const {
125 return MaxHeapSize;
126 }
127
min_size() const128 size_t GCHeapConfiguration::min_size() const {
129 return MinHeapSize;
130 }
131
initial_size() const132 size_t GCHeapConfiguration::initial_size() const {
133 return InitialHeapSize;
134 }
135
uses_compressed_oops() const136 bool GCHeapConfiguration::uses_compressed_oops() const {
137 return UseCompressedOops;
138 }
139
narrow_oop_mode() const140 CompressedOops::Mode GCHeapConfiguration::narrow_oop_mode() const {
141 return CompressedOops::mode();
142 }
143
object_alignment_in_bytes() const144 uint GCHeapConfiguration::object_alignment_in_bytes() const {
145 return ObjectAlignmentInBytes;
146 }
147
heap_address_size_in_bits() const148 int GCHeapConfiguration::heap_address_size_in_bits() const {
149 return BitsPerHeapOop;
150 }
151
has_max_size_default_value() const152 bool GCYoungGenerationConfiguration::has_max_size_default_value() const {
153 return FLAG_IS_DEFAULT(MaxNewSize);
154 }
155
max_size() const156 uintx GCYoungGenerationConfiguration::max_size() const {
157 return MaxNewSize;
158 }
159
min_size() const160 uintx GCYoungGenerationConfiguration::min_size() const {
161 return NewSize;
162 }
163
new_ratio() const164 intx GCYoungGenerationConfiguration::new_ratio() const {
165 return NewRatio;
166 }
167