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src/share/vm/gc_implementation/shared/collectorCounters.hpp@ba764ed4b6f2 (annotated)

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

Sun, 13 Apr 2008 17:43:42 -0400

author

coleenp

date

Sun, 13 Apr 2008 17:43:42 -0400

changeset 548

ba764ed4b6f2

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold

duke@435	1	/*
duke@435	2	* Copyright 2002-2004 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// CollectorCounters is a holder class for performance counters
duke@435	26	// that track a collector
duke@435	27
duke@435	28	class CollectorCounters: public CHeapObj {
duke@435	29	friend class VMStructs;
duke@435	30
duke@435	31	private:
duke@435	32	PerfCounter* _invocations;
duke@435	33	PerfCounter* _time;
duke@435	34	PerfVariable* _last_entry_time;
duke@435	35	PerfVariable* _last_exit_time;
duke@435	36
duke@435	37	// Constant PerfData types don't need to retain a reference.
duke@435	38	// However, it's a good idea to document them here.
duke@435	39	// PerfStringConstant* _name;
duke@435	40
duke@435	41	char* _name_space;
duke@435	42
duke@435	43	public:
duke@435	44
duke@435	45	CollectorCounters(const char* name, int ordinal);
duke@435	46
duke@435	47	~CollectorCounters() {
duke@435	48	if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space);
duke@435	49	}
duke@435	50
duke@435	51	inline PerfCounter* invocation_counter() const { return _invocations; }
duke@435	52
duke@435	53	inline PerfCounter* time_counter() const { return _time; }
duke@435	54
duke@435	55	inline PerfVariable* last_entry_counter() const { return _last_entry_time; }
duke@435	56
duke@435	57	inline PerfVariable* last_exit_counter() const { return _last_exit_time; }
duke@435	58
duke@435	59	const char* name_space() const { return _name_space; }
duke@435	60	};
duke@435	61
duke@435	62	class TraceCollectorStats: public PerfTraceTimedEvent {
duke@435	63
duke@435	64	protected:
duke@435	65	CollectorCounters* _c;
duke@435	66
duke@435	67	public:
duke@435	68	inline TraceCollectorStats(CollectorCounters* c) :
duke@435	69	PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()),
duke@435	70	_c(c) {
duke@435	71
duke@435	72	if (UsePerfData) {
duke@435	73	_c->last_entry_counter()->set_value(os::elapsed_counter());
duke@435	74	}
duke@435	75	}
duke@435	76
duke@435	77	inline ~TraceCollectorStats() {
duke@435	78	if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter());
duke@435	79	}
duke@435	80	};