Mercurial > hg > truffle
view src/share/vm/gc_implementation/concurrentMarkSweep/freeBlockDictionary.hpp @ 1294:7de45b5044c3
6932270: Allow Java's ELF symtab reader to use separate debuginfo files
Reviewed-by: never
Contributed-by: Andrew Haley <aph@redhat.com>
author | never |
---|---|
date | Tue, 09 Mar 2010 11:02:39 -0800 |
parents | e018e6884bd8 |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 2001-2008 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // A FreeBlockDictionary is an abstract superclass that will allow // a number of alternative implementations in the future. class FreeBlockDictionary: public CHeapObj { public: enum Dither { atLeast, exactly, roughly }; enum DictionaryChoice { dictionaryBinaryTree = 0, dictionarySplayTree = 1, dictionarySkipList = 2 }; private: NOT_PRODUCT(Mutex* _lock;) public: virtual void removeChunk(FreeChunk* fc) = 0; virtual FreeChunk* getChunk(size_t size, Dither dither = atLeast) = 0; virtual void returnChunk(FreeChunk* chunk) = 0; virtual size_t totalChunkSize(debug_only(const Mutex* lock)) const = 0; virtual size_t maxChunkSize() const = 0; virtual size_t minSize() const = 0; // Reset the dictionary to the initial conditions for a single // block. virtual void reset(HeapWord* addr, size_t size) = 0; virtual void reset() = 0; virtual void dictCensusUpdate(size_t size, bool split, bool birth) = 0; virtual bool coalDictOverPopulated(size_t size) = 0; virtual void beginSweepDictCensus(double coalSurplusPercent, float inter_sweep_current, float inter_sweep_estimate, float intra__sweep_current) = 0; virtual void endSweepDictCensus(double splitSurplusPercent) = 0; virtual FreeChunk* findLargestDict() const = 0; // verify that the given chunk is in the dictionary. virtual bool verifyChunkInFreeLists(FreeChunk* tc) const = 0; // Sigma_{all_free_blocks} (block_size^2) virtual double sum_of_squared_block_sizes() const = 0; virtual FreeChunk* find_chunk_ends_at(HeapWord* target) const = 0; virtual void inc_totalSize(size_t v) = 0; virtual void dec_totalSize(size_t v) = 0; NOT_PRODUCT ( virtual size_t sumDictReturnedBytes() = 0; virtual void initializeDictReturnedBytes() = 0; virtual size_t totalCount() = 0; ) virtual void reportStatistics() const { gclog_or_tty->print("No statistics available"); } virtual void printDictCensus() const = 0; virtual void print_free_lists(outputStream* st) const = 0; virtual void verify() const = 0; Mutex* par_lock() const PRODUCT_RETURN0; void set_par_lock(Mutex* lock) PRODUCT_RETURN; void verify_par_locked() const PRODUCT_RETURN; };