Mercurial > hg > graal-compiler
annotate src/share/vm/memory/freeBlockDictionary.hpp @ 6026:9f059abe8cf2
7131629: Generalize the CMS free list code
Summary: Make the FreeChunk, FreeList, TreeList, and BinaryTreeDictionary classes usable outside CMS.
Reviewed-by: brutisso, johnc, jwilhelm
Contributed-by: coleen.phillimore@oracle.com
| author | jmasa |
|---|---|
| date | Thu, 29 Mar 2012 19:46:24 -0700 |
| parents | src/share/vm/gc_implementation/concurrentMarkSweep/freeBlockDictionary.hpp@f95d63e2154a |
| children | f69a5d43dc19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6026 | 2 * Copyright (c) 2001, 2012, 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 | |
| 6026 | 25 #ifndef SHARE_VM_MEMORY_FREEBLOCKDICTIONARY_HPP |
| 26 #define SHARE_VM_MEMORY_FREEBLOCKDICTIONARY_HPP | |
| 1972 | 27 |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "runtime/mutex.hpp" | |
| 30 #include "utilities/debug.hpp" | |
| 31 #include "utilities/globalDefinitions.hpp" | |
| 32 #include "utilities/ostream.hpp" | |
| 33 | |
| 0 | 34 // A FreeBlockDictionary is an abstract superclass that will allow |
| 35 // a number of alternative implementations in the future. | |
| 6026 | 36 template <class Chunk> |
| 0 | 37 class FreeBlockDictionary: public CHeapObj { |
| 38 public: | |
| 39 enum Dither { | |
| 40 atLeast, | |
| 41 exactly, | |
| 42 roughly | |
| 43 }; | |
| 44 enum DictionaryChoice { | |
| 45 dictionaryBinaryTree = 0, | |
| 46 dictionarySplayTree = 1, | |
| 47 dictionarySkipList = 2 | |
| 48 }; | |
| 49 | |
| 50 private: | |
| 51 NOT_PRODUCT(Mutex* _lock;) | |
| 52 | |
| 53 public: | |
| 6026 | 54 virtual void removeChunk(Chunk* fc) = 0; |
| 55 virtual Chunk* getChunk(size_t size, Dither dither = atLeast) = 0; | |
| 56 virtual void returnChunk(Chunk* chunk) = 0; | |
| 0 | 57 virtual size_t totalChunkSize(debug_only(const Mutex* lock)) const = 0; |
| 58 virtual size_t maxChunkSize() const = 0; | |
| 59 virtual size_t minSize() const = 0; | |
| 60 // Reset the dictionary to the initial conditions for a single | |
| 61 // block. | |
| 62 virtual void reset(HeapWord* addr, size_t size) = 0; | |
| 63 virtual void reset() = 0; | |
| 64 | |
| 65 virtual void dictCensusUpdate(size_t size, bool split, bool birth) = 0; | |
| 66 virtual bool coalDictOverPopulated(size_t size) = 0; | |
| 67 virtual void beginSweepDictCensus(double coalSurplusPercent, | |
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68 float inter_sweep_current, float inter_sweep_estimate, |
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69 float intra__sweep_current) = 0; |
| 0 | 70 virtual void endSweepDictCensus(double splitSurplusPercent) = 0; |
| 6026 | 71 virtual Chunk* findLargestDict() const = 0; |
| 0 | 72 // verify that the given chunk is in the dictionary. |
| 6026 | 73 virtual bool verifyChunkInFreeLists(Chunk* tc) const = 0; |
| 0 | 74 |
| 75 // Sigma_{all_free_blocks} (block_size^2) | |
| 76 virtual double sum_of_squared_block_sizes() const = 0; | |
| 77 | |
| 6026 | 78 virtual Chunk* find_chunk_ends_at(HeapWord* target) const = 0; |
| 0 | 79 virtual void inc_totalSize(size_t v) = 0; |
| 80 virtual void dec_totalSize(size_t v) = 0; | |
| 81 | |
| 82 NOT_PRODUCT ( | |
| 83 virtual size_t sumDictReturnedBytes() = 0; | |
| 84 virtual void initializeDictReturnedBytes() = 0; | |
| 85 virtual size_t totalCount() = 0; | |
| 86 ) | |
| 87 | |
| 88 virtual void reportStatistics() const { | |
| 89 gclog_or_tty->print("No statistics available"); | |
| 90 } | |
| 91 | |
| 92 virtual void printDictCensus() const = 0; | |
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93 virtual void print_free_lists(outputStream* st) const = 0; |
| 0 | 94 |
| 95 virtual void verify() const = 0; | |
| 96 | |
| 97 Mutex* par_lock() const PRODUCT_RETURN0; | |
| 98 void set_par_lock(Mutex* lock) PRODUCT_RETURN; | |
| 99 void verify_par_locked() const PRODUCT_RETURN; | |
| 100 }; | |
| 1972 | 101 |
| 6026 | 102 #endif // SHARE_VM_MEMORY_FREEBLOCKDICTIONARY_HPP |