Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psYoungGen.hpp @ 3774:c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
Summary: Remove two unused parameters from the mem_allocate() method and update its uses accordingly.
Reviewed-by: stefank, johnc
| author | tonyp |
|---|---|
| date | Thu, 16 Jun 2011 15:51:57 -0400 |
| parents | eda9eb483d29 |
| children | b632e80fc9dc |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSYOUNGGEN_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSYOUNGGEN_HPP | |
| 27 | |
| 28 #include "gc_implementation/parallelScavenge/objectStartArray.hpp" | |
| 29 #include "gc_implementation/parallelScavenge/psGenerationCounters.hpp" | |
| 30 #include "gc_implementation/parallelScavenge/psVirtualspace.hpp" | |
| 31 #include "gc_implementation/shared/mutableSpace.hpp" | |
| 32 #include "gc_implementation/shared/spaceCounters.hpp" | |
| 33 | |
| 0 | 34 class PSMarkSweepDecorator; |
| 35 | |
| 36 class PSYoungGen : public CHeapObj { | |
| 37 friend class VMStructs; | |
| 38 friend class ParallelScavengeHeap; | |
| 39 friend class AdjoiningGenerations; | |
| 40 | |
| 41 protected: | |
| 42 MemRegion _reserved; | |
| 43 PSVirtualSpace* _virtual_space; | |
| 44 | |
| 45 // Spaces | |
| 46 MutableSpace* _eden_space; | |
| 47 MutableSpace* _from_space; | |
| 48 MutableSpace* _to_space; | |
| 49 | |
| 50 | |
| 51 // MarkSweep Decorators | |
| 52 PSMarkSweepDecorator* _eden_mark_sweep; | |
| 53 PSMarkSweepDecorator* _from_mark_sweep; | |
| 54 PSMarkSweepDecorator* _to_mark_sweep; | |
| 55 | |
| 56 // Sizing information, in bytes, set in constructor | |
| 57 const size_t _init_gen_size; | |
| 58 const size_t _min_gen_size; | |
| 59 const size_t _max_gen_size; | |
| 60 | |
| 61 // Performance counters | |
| 62 PSGenerationCounters* _gen_counters; | |
| 63 SpaceCounters* _eden_counters; | |
| 64 SpaceCounters* _from_counters; | |
| 65 SpaceCounters* _to_counters; | |
| 66 | |
| 67 // Initialize the space boundaries | |
| 68 void compute_initial_space_boundaries(); | |
| 69 | |
| 70 // Space boundary helper | |
| 71 void set_space_boundaries(size_t eden_size, size_t survivor_size); | |
| 72 | |
| 73 virtual bool resize_generation(size_t eden_size, size_t survivor_size); | |
| 74 virtual void resize_spaces(size_t eden_size, size_t survivor_size); | |
| 75 | |
| 76 // Adjust the spaces to be consistent with the virtual space. | |
| 77 void post_resize(); | |
| 78 | |
| 79 // Return number of bytes that the generation can change. | |
| 80 // These should not be used by PSYoungGen | |
| 81 virtual size_t available_for_expansion(); | |
| 82 virtual size_t available_for_contraction(); | |
| 83 | |
| 84 // Given a desired shrinkage in the size of the young generation, | |
| 85 // return the actual size available for shrinkage. | |
| 86 virtual size_t limit_gen_shrink(size_t desired_change); | |
| 87 // returns the number of bytes available from the current size | |
| 88 // down to the minimum generation size. | |
| 89 size_t available_to_min_gen(); | |
| 90 // Return the number of bytes available for shrinkage considering | |
| 91 // the location the live data in the generation. | |
| 92 virtual size_t available_to_live(); | |
| 93 | |
| 94 public: | |
| 95 // Initialize the generation. | |
| 96 PSYoungGen(size_t initial_byte_size, | |
| 97 size_t minimum_byte_size, | |
| 98 size_t maximum_byte_size); | |
| 99 void initialize_work(); | |
| 100 virtual void initialize(ReservedSpace rs, size_t alignment); | |
| 101 virtual void initialize_virtual_space(ReservedSpace rs, size_t alignment); | |
| 102 | |
| 103 MemRegion reserved() const { return _reserved; } | |
| 104 | |
| 105 bool is_in(const void* p) const { | |
| 106 return _virtual_space->contains((void *)p); | |
| 107 } | |
| 108 | |
| 109 bool is_in_reserved(const void* p) const { | |
| 110 return reserved().contains((void *)p); | |
| 111 } | |
| 112 | |
| 113 MutableSpace* eden_space() const { return _eden_space; } | |
| 114 MutableSpace* from_space() const { return _from_space; } | |
| 115 MutableSpace* to_space() const { return _to_space; } | |
| 116 PSVirtualSpace* virtual_space() const { return _virtual_space; } | |
| 117 | |
| 118 // For Adaptive size policy | |
| 119 size_t min_gen_size() { return _min_gen_size; } | |
| 120 | |
| 121 // MarkSweep support | |
| 122 PSMarkSweepDecorator* eden_mark_sweep() const { return _eden_mark_sweep; } | |
| 123 PSMarkSweepDecorator* from_mark_sweep() const { return _from_mark_sweep; } | |
| 124 PSMarkSweepDecorator* to_mark_sweep() const { return _to_mark_sweep; } | |
| 125 | |
| 126 void precompact(); | |
| 127 void adjust_pointers(); | |
| 128 void compact(); | |
| 129 | |
| 130 // Called during/after gc | |
| 131 void swap_spaces(); | |
| 132 | |
| 133 // Resize generation using suggested free space size and survivor size | |
| 134 // NOTE: "eden_size" and "survivor_size" are suggestions only. Current | |
| 135 // heap layout (particularly, live objects in from space) might | |
| 136 // not allow us to use these values. | |
| 137 void resize(size_t eden_size, size_t survivor_size); | |
| 138 | |
| 139 // Size info | |
| 140 size_t capacity_in_bytes() const; | |
| 141 size_t used_in_bytes() const; | |
| 142 size_t free_in_bytes() const; | |
| 143 | |
| 144 size_t capacity_in_words() const; | |
| 145 size_t used_in_words() const; | |
| 146 size_t free_in_words() const; | |
| 147 | |
| 148 // The max this generation can grow to | |
| 149 size_t max_size() const { return _reserved.byte_size(); } | |
| 150 | |
| 151 // The max this generation can grow to if the boundary between | |
| 152 // the generations are allowed to move. | |
| 153 size_t gen_size_limit() const { return _max_gen_size; } | |
| 154 | |
| 155 bool is_maximal_no_gc() const { | |
| 156 return true; // never expands except at a GC | |
| 157 } | |
| 158 | |
| 159 // Allocation | |
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160 HeapWord* allocate(size_t word_size) { |
| 0 | 161 HeapWord* result = eden_space()->cas_allocate(word_size); |
| 162 return result; | |
| 163 } | |
| 164 | |
| 165 HeapWord** top_addr() const { return eden_space()->top_addr(); } | |
| 166 HeapWord** end_addr() const { return eden_space()->end_addr(); } | |
| 167 | |
| 168 // Iteration. | |
| 169 void oop_iterate(OopClosure* cl); | |
| 170 void object_iterate(ObjectClosure* cl); | |
| 171 | |
| 172 virtual void reset_after_change(); | |
| 173 virtual void reset_survivors_after_shrink(); | |
| 174 | |
| 175 // Performance Counter support | |
| 176 void update_counters(); | |
| 177 | |
| 178 // Debugging - do not use for time critical operations | |
| 179 void print() const; | |
| 180 void print_on(outputStream* st) const; | |
| 181 void print_used_change(size_t prev_used) const; | |
| 182 virtual const char* name() const { return "PSYoungGen"; } | |
| 183 | |
| 184 void verify(bool allow_dirty); | |
| 185 | |
| 186 // Space boundary invariant checker | |
| 187 void space_invariants() PRODUCT_RETURN; | |
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188 |
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189 // Helper for mangling survivor spaces. |
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190 void mangle_survivors(MutableSpace* s1, |
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191 MemRegion s1MR, |
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192 MutableSpace* s2, |
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193 MemRegion s2MR) PRODUCT_RETURN; |
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194 |
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195 void record_spaces_top() PRODUCT_RETURN; |
| 0 | 196 }; |
| 1972 | 197 |
| 198 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSYOUNGGEN_HPP |