1 /* 2 * Copyright (c) 2012, 2015, 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 #ifndef SHARE_VM_GC_SHARED_GCHEAPSUMMARY_HPP 26 #define SHARE_VM_GC_SHARED_GCHEAPSUMMARY_HPP 27 28 #include "memory/allocation.hpp" 29 #include "memory/metaspaceChunkFreeListSummary.hpp" 30 31 class VirtualSpaceSummary : public StackObj { 32 HeapWord* _start; 33 HeapWord* _committed_end; 34 HeapWord* _reserved_end; 35 public: 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 48 class SpaceSummary : public StackObj { 49 HeapWord* _start; 50 HeapWord* _end; 51 size_t _used; 52 public: 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 64 class 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 79 class GCHeapSummary; 80 class PSHeapSummary; 81 class G1HeapSummary; 82 83 class 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 90 class 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 }; 107 108 class 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 }; 129 130 class G1HeapSummary : public GCHeapSummary { 131 size_t _edenUsed; 132 size_t _edenCapacity; 133 size_t _survivorUsed; 134 public: 135 G1HeapSummary(VirtualSpaceSummary& heap_space, size_t heap_used, size_t edenUsed, size_t edenCapacity, size_t survivorUsed) : 136 GCHeapSummary(heap_space, heap_used), _edenUsed(edenUsed), _edenCapacity(edenCapacity), _survivorUsed(survivorUsed) { } 137 const size_t edenUsed() const { return _edenUsed; } 138 const size_t edenCapacity() const { return _edenCapacity; } 139 const size_t survivorUsed() const { return _survivorUsed; } 140 141 virtual void accept(GCHeapSummaryVisitor* visitor) const { 142 visitor->visit(this); 143 } 144 }; 145 146 class MetaspaceSummary : public StackObj { 147 size_t _capacity_until_GC; 148 MetaspaceSizes _meta_space; 149 MetaspaceSizes _data_space; 150 MetaspaceSizes _class_space; 151 MetaspaceChunkFreeListSummary _metaspace_chunk_free_list_summary; 152 MetaspaceChunkFreeListSummary _class_chunk_free_list_summary; 153 154 public: 155 MetaspaceSummary() : 156 _capacity_until_GC(0), 157 _meta_space(), 158 _data_space(), 159 _class_space(), 160 _metaspace_chunk_free_list_summary(), 161 _class_chunk_free_list_summary() 162 {} 163 MetaspaceSummary(size_t capacity_until_GC, 164 const MetaspaceSizes& meta_space, 165 const MetaspaceSizes& data_space, 166 const MetaspaceSizes& class_space, 167 const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary, 168 const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary) : 169 _capacity_until_GC(capacity_until_GC), 170 _meta_space(meta_space), 171 _data_space(data_space), 172 _class_space(class_space), 173 _metaspace_chunk_free_list_summary(metaspace_chunk_free_list_summary), 174 _class_chunk_free_list_summary(class_chunk_free_list_summary) 175 {} 176 177 size_t capacity_until_GC() const { return _capacity_until_GC; } 178 const MetaspaceSizes& meta_space() const { return _meta_space; } 179 const MetaspaceSizes& data_space() const { return _data_space; } 180 const MetaspaceSizes& class_space() const { return _class_space; } 181 182 const MetaspaceChunkFreeListSummary& metaspace_chunk_free_list_summary() const { 183 return _metaspace_chunk_free_list_summary; 184 } 185 186 const MetaspaceChunkFreeListSummary& class_chunk_free_list_summary() const { 187 return _class_chunk_free_list_summary; 188 } 189 190 }; 191 192 class G1EvacSummary : public StackObj { 193 private: 194 size_t _allocated; // Total allocated 195 size_t _wasted; // of which wasted (internal fragmentation) 196 size_t _undo_wasted; // of which wasted on undo (is not used for calculation of PLAB size) 197 size_t _unused; // Unused in last buffer 198 size_t _used; 199 200 size_t _region_end_waste; // Number of words wasted due to skipping to the next region. 201 uint _regions_filled; // Number of regions filled completely. 202 size_t _direct_allocated; // Number of words allocated directly into the regions. 203 204 // Number of words in live objects remaining in regions that ultimately suffered an 205 // evacuation failure. This is used in the regions when the regions are made old regions. 206 size_t _failure_used; 207 // Number of words wasted in regions which failed evacuation. This is the sum of space 208 // for objects successfully copied out of the regions (now dead space) plus waste at the 209 // end of regions. 210 size_t _failure_waste; 211 public: 212 G1EvacSummary(size_t allocated, size_t wasted, size_t undo_wasted, size_t unused, 213 size_t used, size_t region_end_waste, uint regions_filled, size_t direct_allocated, 214 size_t failure_used, size_t failure_waste) : 215 _allocated(allocated), _wasted(wasted), _undo_wasted(undo_wasted), _unused(unused), 216 _used(used), _region_end_waste(region_end_waste), _regions_filled(regions_filled), 217 _direct_allocated(direct_allocated), _failure_used(failure_used), _failure_waste(failure_waste) 218 { } 219 220 size_t allocated() const { return _allocated; } 221 size_t wasted() const { return _wasted; } 222 size_t undo_wasted() const { return _undo_wasted; } 223 size_t unused() const { return _unused; } 224 size_t used() const { return _used; } 225 size_t region_end_waste() const { return _region_end_waste; } 226 uint regions_filled() const { return _regions_filled; } 227 size_t direct_allocated() const { return _direct_allocated; } 228 size_t failure_used() const { return _failure_used; } 229 size_t failure_waste() const { return _failure_waste; } 230 }; 231 232 #endif // SHARE_VM_GC_SHARED_GCHEAPSUMMARY_HPP