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src/share/vm/gc_implementation/shared/gcPolicyCounters.hpp@595c0f60d50d (annotated)

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

Tue, 18 Mar 2014 19:07:22 +0100

author

pliden

date

Tue, 18 Mar 2014 19:07:22 +0100

changeset 6413

595c0f60d50d

parent 4153

b9a9ed0f8eeb

child 6876

710a3c8b516e

permissions

-rw-r--r--

8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp

duke@435	1	/*
mikael@4153	2	* Copyright (c) 2002, 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
stefank@2314	25	#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCPOLICYCOUNTERS_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCPOLICYCOUNTERS_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/perfData.hpp"
stefank@2314	29
duke@435	30	// GCPolicyCounters is a holder class for performance counters
duke@435	31	// that track a generation
duke@435	32
zgu@3900	33	class GCPolicyCounters: public CHeapObj<mtGC> {
duke@435	34	friend class VMStructs;
duke@435	35
duke@435	36	private:
duke@435	37
duke@435	38	// Constant PerfData types don't need to retain a reference.
duke@435	39	// However, it's a good idea to document them here.
duke@435	40	// PerfStringConstant* _name;
duke@435	41	// PerfStringConstant* _collector_size;
duke@435	42	// PerfStringConstant* _generation_size;
duke@435	43
duke@435	44	PerfVariable* _tenuring_threshold;
duke@435	45	PerfVariable* _desired_survivor_size;
duke@435	46
duke@435	47	const char* _name_space;
duke@435	48
duke@435	49	public:
duke@435	50
duke@435	51	enum Name {
duke@435	52	NONE,
duke@435	53	GCPolicyCountersKind,
duke@435	54	GCAdaptivePolicyCountersKind,
duke@435	55	PSGCAdaptivePolicyCountersKind,
duke@435	56	CMSGCAdaptivePolicyCountersKind
duke@435	57	};
duke@435	58
duke@435	59	GCPolicyCounters(const char* name, int collectors, int generations);
duke@435	60
duke@435	61	inline PerfVariable* tenuring_threshold() const {
duke@435	62	return _tenuring_threshold;
duke@435	63	}
duke@435	64
duke@435	65	inline PerfVariable* desired_survivor_size() const {
duke@435	66	return _desired_survivor_size;
duke@435	67	}
duke@435	68
duke@435	69	const char* name_space() const { return _name_space; }
duke@435	70
duke@435	71	virtual void update_counters() {}
duke@435	72
duke@435	73	virtual GCPolicyCounters::Name kind() const {
duke@435	74	return GCPolicyCounters::GCPolicyCountersKind;
duke@435	75	}
duke@435	76	};
stefank@2314	77
stefank@2314	78	#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCPOLICYCOUNTERS_HPP