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src/share/vm/gc_implementation/shared/collectorCounters.hpp@f90c822e73f8 (annotated)

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

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

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_COLLECTORCOUNTERS_HPP
aoqi@0	26	#define SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP
aoqi@0	27
aoqi@0	28	#include "runtime/perfData.hpp"
aoqi@0	29
aoqi@0	30	// CollectorCounters is a holder class for performance counters
aoqi@0	31	// that track a collector
aoqi@0	32
aoqi@0	33	class CollectorCounters: public CHeapObj<mtGC> {
aoqi@0	34	friend class VMStructs;
aoqi@0	35
aoqi@0	36	private:
aoqi@0	37	PerfCounter* _invocations;
aoqi@0	38	PerfCounter* _time;
aoqi@0	39	PerfVariable* _last_entry_time;
aoqi@0	40	PerfVariable* _last_exit_time;
aoqi@0	41
aoqi@0	42	// Constant PerfData types don't need to retain a reference.
aoqi@0	43	// However, it's a good idea to document them here.
aoqi@0	44	// PerfStringConstant* _name;
aoqi@0	45
aoqi@0	46	char* _name_space;
aoqi@0	47
aoqi@0	48	public:
aoqi@0	49
aoqi@0	50	CollectorCounters(const char* name, int ordinal);
aoqi@0	51
aoqi@0	52	~CollectorCounters() {
aoqi@0	53	if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC);
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	inline PerfCounter* invocation_counter() const { return _invocations; }
aoqi@0	57
aoqi@0	58	inline PerfCounter* time_counter() const { return _time; }
aoqi@0	59
aoqi@0	60	inline PerfVariable* last_entry_counter() const { return _last_entry_time; }
aoqi@0	61
aoqi@0	62	inline PerfVariable* last_exit_counter() const { return _last_exit_time; }
aoqi@0	63
aoqi@0	64	const char* name_space() const { return _name_space; }
aoqi@0	65	};
aoqi@0	66
aoqi@0	67	class TraceCollectorStats: public PerfTraceTimedEvent {
aoqi@0	68
aoqi@0	69	protected:
aoqi@0	70	CollectorCounters* _c;
aoqi@0	71
aoqi@0	72	public:
aoqi@0	73	inline TraceCollectorStats(CollectorCounters* c) :
aoqi@0	74	PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()),
aoqi@0	75	_c(c) {
aoqi@0	76
aoqi@0	77	if (UsePerfData) {
aoqi@0	78	_c->last_entry_counter()->set_value(os::elapsed_counter());
aoqi@0	79	}
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	inline ~TraceCollectorStats() {
aoqi@0	83	if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter());
aoqi@0	84	}
aoqi@0	85	};
aoqi@0	86
aoqi@0	87	#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_COLLECTORCOUNTERS_HPP