1/*
2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25#ifndef SHARE_GC_SHARED_GCHEAPSUMMARY_HPP
26#define SHARE_GC_SHARED_GCHEAPSUMMARY_HPP
27
28#include "memory/allocation.hpp"
29#include "memory/metaspaceChunkFreeListSummary.hpp"
30
31class VirtualSpaceSummary : public StackObj {
32 HeapWord* _start;
33 HeapWord* _committed_end;
34 HeapWord* _reserved_end;
35public:
36 VirtualSpaceSummary() :
37 _start(NULL), _committed_end(NULL), _reserved_end(NULL) { }
38 VirtualSpaceSummary(HeapWord* start, HeapWord* committed_end, HeapWord* reserved_end) :
39 _start(start), _committed_end(committed_end), _reserved_end(reserved_end) { }
40
41 HeapWord* start() const { return _start; }
42 HeapWord* committed_end() const { return _committed_end; }
43 HeapWord* reserved_end() const { return _reserved_end; }
44 size_t committed_size() const { return (uintptr_t)_committed_end - (uintptr_t)_start; }
45 size_t reserved_size() const { return (uintptr_t)_reserved_end - (uintptr_t)_start; }
46};
47
48class SpaceSummary : public StackObj {
49 HeapWord* _start;
50 HeapWord* _end;
51 size_t _used;
52public:
53 SpaceSummary() :
54 _start(NULL), _end(NULL), _used(0) { }
55 SpaceSummary(HeapWord* start, HeapWord* end, size_t used) :
56 _start(start), _end(end), _used(used) { }
57
58 HeapWord* start() const { return _start; }
59 HeapWord* end() const { return _end; }
60 size_t used() const { return _used; }
61 size_t size() const { return (uintptr_t)_end - (uintptr_t)_start; }
62};
63
64class MetaspaceSizes : public StackObj {
65 size_t _committed;
66 size_t _used;
67 size_t _reserved;
68
69 public:
70 MetaspaceSizes() : _committed(0), _used(0), _reserved(0) {}
71 MetaspaceSizes(size_t committed, size_t used, size_t reserved) :
72 _committed(committed), _used(used), _reserved(reserved) {}
73
74 size_t committed() const { return _committed; }
75 size_t used() const { return _used; }
76 size_t reserved() const { return _reserved; }
77};
78
79class GCHeapSummary;
80class PSHeapSummary;
81class G1HeapSummary;
82
83class GCHeapSummaryVisitor {
84 public:
85 virtual void visit(const GCHeapSummary* heap_summary) const = 0;
86 virtual void visit(const PSHeapSummary* heap_summary) const {}
87 virtual void visit(const G1HeapSummary* heap_summary) const {}
88};
89
90class GCHeapSummary : public StackObj {
91 VirtualSpaceSummary _heap;
92 size_t _used;
93
94 public:
95 GCHeapSummary() :
96 _heap(), _used(0) { }
97 GCHeapSummary(VirtualSpaceSummary& heap_space, size_t used) :
98 _heap(heap_space), _used(used) { }
99
100 const VirtualSpaceSummary& heap() const { return _heap; }
101 size_t used() const { return _used; }
102
103 virtual void accept(GCHeapSummaryVisitor* visitor) const {
104 visitor->visit(this);
105 }
106};
107
108class PSHeapSummary : public GCHeapSummary {
109 VirtualSpaceSummary _old;
110 SpaceSummary _old_space;
111 VirtualSpaceSummary _young;
112 SpaceSummary _eden;
113 SpaceSummary _from;
114 SpaceSummary _to;
115 public:
116 PSHeapSummary(VirtualSpaceSummary& heap_space, size_t heap_used, VirtualSpaceSummary old, SpaceSummary old_space, VirtualSpaceSummary young, SpaceSummary eden, SpaceSummary from, SpaceSummary to) :
117 GCHeapSummary(heap_space, heap_used), _old(old), _old_space(old_space), _young(young), _eden(eden), _from(from), _to(to) { }
118 const VirtualSpaceSummary& old() const { return _old; }
119 const SpaceSummary& old_space() const { return _old_space; }
120 const VirtualSpaceSummary& young() const { return _young; }
121 const SpaceSummary& eden() const { return _eden; }
122 const SpaceSummary& from() const { return _from; }
123 const SpaceSummary& to() const { return _to; }
124
125 virtual void accept(GCHeapSummaryVisitor* visitor) const {
126 visitor->visit(this);
127 }
128};
129
130class G1HeapSummary : public GCHeapSummary {
131 size_t _edenUsed;
132 size_t _edenCapacity;
133 size_t _survivorUsed;
134 uint _numberOfRegions;
135 public:
136 G1HeapSummary(VirtualSpaceSummary& heap_space, size_t heap_used, size_t edenUsed, size_t edenCapacity, size_t survivorUsed, uint numberOfRegions) :
137 GCHeapSummary(heap_space, heap_used), _edenUsed(edenUsed), _edenCapacity(edenCapacity), _survivorUsed(survivorUsed), _numberOfRegions(numberOfRegions) { }
138 const size_t edenUsed() const { return _edenUsed; }
139 const size_t edenCapacity() const { return _edenCapacity; }
140 const size_t survivorUsed() const { return _survivorUsed; }
141 const uint numberOfRegions() const { return _numberOfRegions; }
142
143 virtual void accept(GCHeapSummaryVisitor* visitor) const {
144 visitor->visit(this);
145 }
146};
147
148class MetaspaceSummary : public StackObj {
149 size_t _capacity_until_GC;
150 MetaspaceSizes _meta_space;
151 MetaspaceSizes _data_space;
152 MetaspaceSizes _class_space;
153 MetaspaceChunkFreeListSummary _metaspace_chunk_free_list_summary;
154 MetaspaceChunkFreeListSummary _class_chunk_free_list_summary;
155
156 public:
157 MetaspaceSummary() :
158 _capacity_until_GC(0),
159 _meta_space(),
160 _data_space(),
161 _class_space(),
162 _metaspace_chunk_free_list_summary(),
163 _class_chunk_free_list_summary()
164 {}
165 MetaspaceSummary(size_t capacity_until_GC,
166 const MetaspaceSizes& meta_space,
167 const MetaspaceSizes& data_space,
168 const MetaspaceSizes& class_space,
169 const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary,
170 const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary) :
171 _capacity_until_GC(capacity_until_GC),
172 _meta_space(meta_space),
173 _data_space(data_space),
174 _class_space(class_space),
175 _metaspace_chunk_free_list_summary(metaspace_chunk_free_list_summary),
176 _class_chunk_free_list_summary(class_chunk_free_list_summary)
177 {}
178
179 size_t capacity_until_GC() const { return _capacity_until_GC; }
180 const MetaspaceSizes& meta_space() const { return _meta_space; }
181 const MetaspaceSizes& data_space() const { return _data_space; }
182 const MetaspaceSizes& class_space() const { return _class_space; }
183
184 const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary() const {
185 return _metaspace_chunk_free_list_summary;
186 }
187
188 const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary() const {
189 return _class_chunk_free_list_summary;
190 }
191
192};
193
194class G1EvacSummary : public StackObj {
195private:
196 size_t _allocated; // Total allocated
197 size_t _wasted; // of which wasted (internal fragmentation)
198 size_t _undo_wasted; // of which wasted on undo (is not used for calculation of PLAB size)
199 size_t _unused; // Unused in last buffer
200 size_t _used;
201
202 size_t _region_end_waste; // Number of words wasted due to skipping to the next region.
203 uint _regions_filled; // Number of regions filled completely.
204 size_t _direct_allocated; // Number of words allocated directly into the regions.
205
206 // Number of words in live objects remaining in regions that ultimately suffered an
207 // evacuation failure. This is used in the regions when the regions are made old regions.
208 size_t _failure_used;
209 // Number of words wasted in regions which failed evacuation. This is the sum of space
210 // for objects successfully copied out of the regions (now dead space) plus waste at the
211 // end of regions.
212 size_t _failure_waste;
213public:
214 G1EvacSummary(size_t allocated, size_t wasted, size_t undo_wasted, size_t unused,
215 size_t used, size_t region_end_waste, uint regions_filled, size_t direct_allocated,
216 size_t failure_used, size_t failure_waste) :
217 _allocated(allocated), _wasted(wasted), _undo_wasted(undo_wasted), _unused(unused),
218 _used(used), _region_end_waste(region_end_waste), _regions_filled(regions_filled),
219 _direct_allocated(direct_allocated), _failure_used(failure_used), _failure_waste(failure_waste)
220 { }
221
222 size_t allocated() const { return _allocated; }
223 size_t wasted() const { return _wasted; }
224 size_t undo_wasted() const { return _undo_wasted; }
225 size_t unused() const { return _unused; }
226 size_t used() const { return _used; }
227 size_t region_end_waste() const { return _region_end_waste; }
228 uint regions_filled() const { return _regions_filled; }
229 size_t direct_allocated() const { return _direct_allocated; }
230 size_t failure_used() const { return _failure_used; }
231 size_t failure_waste() const { return _failure_waste; }
232};
233
234#endif // SHARE_GC_SHARED_GCHEAPSUMMARY_HPP
235