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src/share/vm/memory/freeBlockDictionary.hpp@a297b0e14605 (annotated)

src/share/vm/memory/freeBlockDictionary.hpp

Mon, 04 Jun 2012 09:21:53 +0200

author

mgerdin

date

Mon, 04 Jun 2012 09:21:53 +0200

changeset 3822

a297b0e14605

parent 3732

f69a5d43dc19

child 3900

d2a62e0f25eb

permissions

-rw-r--r--

7172226: HotSpot fails to build with GCC 4.7 because of stricter c++ argument dependent lookup
Summary: Add "using" keyword to import base class functions from FreeList<T> to fix template name lookup in gcc 4.7
Reviewed-by: brutisso, iveresov

duke@435	1	/*
jmasa@3730	2	* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
jmasa@3730	25	#ifndef SHARE_VM_MEMORY_FREEBLOCKDICTIONARY_HPP
jmasa@3730	26	#define SHARE_VM_MEMORY_FREEBLOCKDICTIONARY_HPP
stefank@2314	27
stefank@2314	28	#include "memory/allocation.hpp"
stefank@2314	29	#include "runtime/mutex.hpp"
stefank@2314	30	#include "utilities/debug.hpp"
stefank@2314	31	#include "utilities/globalDefinitions.hpp"
stefank@2314	32	#include "utilities/ostream.hpp"
stefank@2314	33
duke@435	34	// A FreeBlockDictionary is an abstract superclass that will allow
duke@435	35	// a number of alternative implementations in the future.
jmasa@3730	36	template <class Chunk>
duke@435	37	class FreeBlockDictionary: public CHeapObj {
duke@435	38	public:
duke@435	39	enum Dither {
duke@435	40	atLeast,
duke@435	41	exactly,
duke@435	42	roughly
duke@435	43	};
duke@435	44	enum DictionaryChoice {
duke@435	45	dictionaryBinaryTree = 0,
duke@435	46	dictionarySplayTree = 1,
duke@435	47	dictionarySkipList = 2
duke@435	48	};
duke@435	49
duke@435	50	private:
duke@435	51	NOT_PRODUCT(Mutex* _lock;)
duke@435	52
duke@435	53	public:
jmasa@3732	54	virtual void remove_chunk(Chunk* fc) = 0;
jmasa@3732	55	virtual Chunk* get_chunk(size_t size, Dither dither = atLeast) = 0;
jmasa@3732	56	virtual void return_chunk(Chunk* chunk) = 0;
jmasa@3732	57	virtual size_t total_chunk_size(debug_only(const Mutex* lock)) const = 0;
jmasa@3732	58	virtual size_t max_chunk_size() const = 0;
jmasa@3732	59	virtual size_t min_size() const = 0;
duke@435	60	// Reset the dictionary to the initial conditions for a single
duke@435	61	// block.
duke@435	62	virtual void reset(HeapWord* addr, size_t size) = 0;
duke@435	63	virtual void reset() = 0;
duke@435	64
jmasa@3732	65	virtual void dict_census_udpate(size_t size, bool split, bool birth) = 0;
jmasa@3732	66	virtual bool coal_dict_over_populated(size_t size) = 0;
jmasa@3732	67	virtual void begin_sweep_dict_census(double coalSurplusPercent,
ysr@1580	68	float inter_sweep_current, float inter_sweep_estimate,
ysr@1580	69	float intra__sweep_current) = 0;
jmasa@3732	70	virtual void end_sweep_dict_census(double splitSurplusPercent) = 0;
jmasa@3732	71	virtual Chunk* find_largest_dict() const = 0;
duke@435	72	// verify that the given chunk is in the dictionary.
jmasa@3732	73	virtual bool verify_chunk_in_free_list(Chunk* tc) const = 0;
duke@435	74
duke@435	75	// Sigma_{all_free_blocks} (block_size^2)
duke@435	76	virtual double sum_of_squared_block_sizes() const = 0;
duke@435	77
jmasa@3730	78	virtual Chunk* find_chunk_ends_at(HeapWord* target) const = 0;
jmasa@3732	79	virtual void inc_total_size(size_t v) = 0;
jmasa@3732	80	virtual void dec_total_size(size_t v) = 0;
duke@435	81
duke@435	82	NOT_PRODUCT (
jmasa@3732	83	virtual size_t sum_dict_returned_bytes() = 0;
jmasa@3732	84	virtual void initialize_dict_returned_bytes() = 0;
jmasa@3732	85	virtual size_t total_count() = 0;
duke@435	86	)
duke@435	87
jmasa@3732	88	virtual void report_statistics() const {
duke@435	89	gclog_or_tty->print("No statistics available");
duke@435	90	}
duke@435	91
jmasa@3732	92	virtual void print_dict_census() const = 0;
ysr@1580	93	virtual void print_free_lists(outputStream* st) const = 0;
duke@435	94
duke@435	95	virtual void verify() const = 0;
duke@435	96
duke@435	97	Mutex* par_lock() const PRODUCT_RETURN0;
duke@435	98	void set_par_lock(Mutex* lock) PRODUCT_RETURN;
duke@435	99	void verify_par_locked() const PRODUCT_RETURN;
duke@435	100	};
stefank@2314	101
jmasa@3730	102	#endif // SHARE_VM_MEMORY_FREEBLOCKDICTIONARY_HPP