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1 /* |
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2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 #ifndef SHARE_GC_Z_ZHEAP_HPP |
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25 #define SHARE_GC_Z_ZHEAP_HPP |
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26 |
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27 #include "gc/shared/gcTimer.hpp" |
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28 #include "gc/z/zAllocationFlags.hpp" |
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29 #include "gc/z/zArray.hpp" |
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30 #include "gc/z/zList.hpp" |
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31 #include "gc/z/zLock.hpp" |
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32 #include "gc/z/zMark.hpp" |
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33 #include "gc/z/zObjectAllocator.hpp" |
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34 #include "gc/z/zPage.hpp" |
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35 #include "gc/z/zPageAllocator.hpp" |
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36 #include "gc/z/zPageTable.hpp" |
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37 #include "gc/z/zReferenceProcessor.hpp" |
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38 #include "gc/z/zRelocate.hpp" |
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39 #include "gc/z/zRelocationSet.hpp" |
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40 #include "gc/z/zRelocationSetSelector.hpp" |
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41 #include "gc/z/zRootsIterator.hpp" |
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42 #include "gc/z/zWeakRootsProcessor.hpp" |
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43 #include "gc/z/zServiceability.hpp" |
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44 #include "gc/z/zWorkers.hpp" |
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45 #include "memory/allocation.hpp" |
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46 |
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47 class ZHeap { |
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48 friend class VMStructs; |
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49 |
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50 private: |
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51 static ZHeap* _heap; |
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52 |
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53 ZWorkers _workers; |
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54 ZObjectAllocator _object_allocator; |
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55 ZPageAllocator _page_allocator; |
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56 ZPageTable _pagetable; |
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57 ZMark _mark; |
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58 ZReferenceProcessor _reference_processor; |
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59 ZWeakRootsProcessor _weak_roots_processor; |
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60 ZRelocate _relocate; |
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61 ZRelocationSet _relocation_set; |
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62 ZServiceability _serviceability; |
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63 |
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64 size_t heap_min_size() const; |
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65 size_t heap_max_size() const; |
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66 size_t heap_max_reserve_size() const; |
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67 |
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68 void out_of_memory(); |
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69 void flip_views(); |
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70 void fixup_partial_loads(); |
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71 |
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72 public: |
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73 static ZHeap* heap(); |
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74 |
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75 ZHeap(); |
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76 |
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77 bool is_initialized() const; |
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78 |
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79 // Heap metrics |
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80 size_t min_capacity() const; |
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81 size_t max_capacity() const; |
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82 size_t capacity() const; |
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83 size_t max_reserve() const; |
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84 size_t used_high() const; |
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85 size_t used_low() const; |
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86 size_t used() const; |
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87 size_t allocated() const; |
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88 size_t reclaimed() const; |
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89 |
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90 size_t tlab_capacity() const; |
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91 size_t tlab_used() const; |
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92 size_t max_tlab_size() const; |
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93 size_t unsafe_max_tlab_alloc() const; |
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94 |
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95 bool is_in(uintptr_t addr) const; |
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96 |
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97 // Block |
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98 uintptr_t block_start(uintptr_t addr) const; |
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99 size_t block_size(uintptr_t addr) const; |
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100 bool block_is_obj(uintptr_t addr) const; |
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101 |
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102 // Workers |
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103 uint nconcurrent_worker_threads() const; |
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104 uint nconcurrent_no_boost_worker_threads() const; |
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105 void set_boost_worker_threads(bool boost); |
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106 void worker_threads_do(ThreadClosure* tc) const; |
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107 void print_worker_threads_on(outputStream* st) const; |
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108 |
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109 // Reference processing |
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110 ReferenceDiscoverer* reference_discoverer(); |
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111 void set_soft_reference_policy(bool clear); |
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112 |
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113 // Non-strong reference processing |
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114 void process_non_strong_references(); |
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115 |
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116 // Page allocation |
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117 ZPage* alloc_page(uint8_t type, size_t size, ZAllocationFlags flags); |
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118 void undo_alloc_page(ZPage* page); |
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119 bool retain_page(ZPage* page); |
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120 void release_page(ZPage* page, bool reclaimed); |
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121 |
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122 // Object allocation |
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123 uintptr_t alloc_tlab(size_t size); |
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124 uintptr_t alloc_object(size_t size); |
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125 uintptr_t alloc_object_for_relocation(size_t size); |
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126 void undo_alloc_object_for_relocation(uintptr_t addr, size_t size); |
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127 void check_out_of_memory(); |
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128 |
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129 // Marking |
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130 bool is_object_live(uintptr_t addr) const; |
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131 bool is_object_strongly_live(uintptr_t addr) const; |
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132 template <bool finalizable, bool publish> void mark_object(uintptr_t addr); |
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133 void mark_start(); |
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134 void mark(); |
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135 void mark_flush_and_free(Thread* thread); |
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136 bool mark_end(); |
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137 |
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138 // Post-marking & Pre-relocation |
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139 void destroy_detached_pages(); |
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140 |
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141 // Relocation set |
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142 void select_relocation_set(); |
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143 void prepare_relocation_set(); |
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144 void reset_relocation_set(); |
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145 |
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146 // Relocation |
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147 bool is_relocating(uintptr_t addr) const; |
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148 void relocate_start(); |
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149 uintptr_t relocate_object(uintptr_t addr); |
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150 uintptr_t forward_object(uintptr_t addr); |
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151 void relocate(); |
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152 |
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153 // Iteration |
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154 void object_iterate(ObjectClosure* cl); |
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155 |
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156 // Serviceability |
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157 void serviceability_initialize(); |
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158 GCMemoryManager* serviceability_memory_manager(); |
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159 MemoryPool* serviceability_memory_pool(); |
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160 ZServiceabilityCounters* serviceability_counters(); |
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161 |
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162 // Printing |
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163 void print_on(outputStream* st) const; |
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164 void print_extended_on(outputStream* st) const; |
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165 |
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166 // Verification |
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167 bool is_oop(oop object) const; |
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168 void verify(); |
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169 }; |
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170 |
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171 #endif // SHARE_GC_Z_ZHEAP_HPP |