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src/share/vm/gc_implementation/shared/generationCounters.hpp@710a3c8b516e (annotated)

src/share/vm/gc_implementation/shared/generationCounters.hpp

Tue, 08 Aug 2017 15:57:29 +0800

author

aoqi

date

Tue, 08 Aug 2017 15:57:29 +0800

changeset 6876

710a3c8b516e

parent 4153

b9a9ed0f8eeb

parent 0

f90c822e73f8

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GENERATIONCOUNTERS_HPP
aoqi@0	26	#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GENERATIONCOUNTERS_HPP
aoqi@0	27
aoqi@0	28	#include "runtime/perfData.hpp"
aoqi@0	29	#include "runtime/virtualspace.hpp"
aoqi@0	30
aoqi@0	31	// A GenerationCounter is a holder class for performance counters
aoqi@0	32	// that track a generation
aoqi@0	33
aoqi@0	34	class GenerationCounters: public CHeapObj<mtGC> {
aoqi@0	35	friend class VMStructs;
aoqi@0	36
aoqi@0	37	private:
aoqi@0	38	void initialize(const char* name, int ordinal, int spaces,
aoqi@0	39	size_t min_capacity, size_t max_capacity,
aoqi@0	40	size_t curr_capacity);
aoqi@0	41
aoqi@0	42	protected:
aoqi@0	43	PerfVariable* _current_size;
aoqi@0	44	VirtualSpace* _virtual_space;
aoqi@0	45
aoqi@0	46	// Constant PerfData types don't need to retain a reference.
aoqi@0	47	// However, it's a good idea to document them here.
aoqi@0	48	// PerfStringConstant* _name;
aoqi@0	49	// PerfConstant* _min_size;
aoqi@0	50	// PerfConstant* _max_size;
aoqi@0	51	// PerfConstant* _spaces;
aoqi@0	52
aoqi@0	53	char* _name_space;
aoqi@0	54
aoqi@0	55	// This constructor is only meant for use with the PSGenerationCounters
aoqi@0	56	// constructor. The need for such an constructor should be eliminated
aoqi@0	57	// when VirtualSpace and PSVirtualSpace are unified.
aoqi@0	58	GenerationCounters()
aoqi@0	59	: _name_space(NULL), _current_size(NULL), _virtual_space(NULL) {}
aoqi@0	60
aoqi@0	61	// This constructor is used for subclasses that do not have a space
aoqi@0	62	// associated with them (e.g, in G1).
aoqi@0	63	GenerationCounters(const char* name, int ordinal, int spaces,
aoqi@0	64	size_t min_capacity, size_t max_capacity,
aoqi@0	65	size_t curr_capacity);
aoqi@0	66
aoqi@0	67	public:
aoqi@0	68	GenerationCounters(const char* name, int ordinal, int spaces,
aoqi@0	69	VirtualSpace* v);
aoqi@0	70
aoqi@0	71	~GenerationCounters() {
aoqi@0	72	if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC);
aoqi@0	73	}
aoqi@0	74
aoqi@0	75	virtual void update_all();
aoqi@0	76
aoqi@0	77	const char* name_space() const { return _name_space; }
aoqi@0	78
aoqi@0	79	};
aoqi@0	80	#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GENERATIONCOUNTERS_HPP