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src/share/vm/gc_implementation/shared/gcAdaptivePolicyCounters.hpp@c6c601a0f2d6 (annotated)

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

Mon, 02 Mar 2009 16:37:04 -0800

author

ysr

date

Mon, 02 Mar 2009 16:37:04 -0800

changeset 1050

c6c601a0f2d6

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
Summary: Call newly created CollectedHeap::dump_{pre,post}_full_gc before and after every stop-world full collection cycle on GenCollectedHeap and ParallelScavengeHeap. (Support for G1CollectedHeap forthcoming under CR 6810861.) Small modifications to existing heap dumping and class histogram implementation, especially to allow multiple on-the-fly histos/dumps by the VM thread during a single safepoint.
Reviewed-by: jmasa, alanb, mchung

duke@435	1	/*
duke@435	2	* Copyright 2004-2005 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	// This class keeps statistical information and computes the
duke@435	26	// size of the heap.
duke@435	27
duke@435	28	class GCAdaptivePolicyCounters : public GCPolicyCounters {
duke@435	29	protected:
duke@435	30	PerfVariable* _eden_size_counter;
duke@435	31	PerfVariable* _promo_size_counter;
duke@435	32
duke@435	33	PerfVariable* _young_capacity_counter;
duke@435	34
duke@435	35	PerfVariable* _minor_gc_cost_counter;
duke@435	36	PerfVariable* _major_gc_cost_counter;
duke@435	37	PerfVariable* _mutator_cost_counter;
duke@435	38
duke@435	39	PerfVariable* _avg_young_live_counter;
duke@435	40	PerfVariable* _avg_old_live_counter;
duke@435	41
duke@435	42	PerfVariable* _avg_minor_pause_counter;
duke@435	43	PerfVariable* _avg_minor_interval_counter;
duke@435	44
duke@435	45	#ifdef NOT_PRODUCT
duke@435	46	PerfVariable* _minor_pause_counter;
duke@435	47	#endif
duke@435	48
duke@435	49	PerfVariable* _change_young_gen_for_min_pauses_counter;
duke@435	50	PerfVariable* _change_young_gen_for_throughput_counter;
duke@435	51	PerfVariable* _change_old_gen_for_maj_pauses_counter;
duke@435	52	PerfVariable* _change_old_gen_for_throughput_counter;
duke@435	53	PerfVariable* _decrease_for_footprint_counter;
duke@435	54
duke@435	55	PerfVariable* _minor_pause_young_slope_counter;
duke@435	56	PerfVariable* _major_pause_old_slope_counter;
duke@435	57
duke@435	58	PerfVariable* _decide_at_full_gc_counter;
duke@435	59
duke@435	60	PerfVariable* _survived_counter;
duke@435	61	PerfVariable* _promoted_counter;
duke@435	62
duke@435	63	PerfVariable* _avg_survived_avg_counter;
duke@435	64	PerfVariable* _avg_survived_dev_counter;
duke@435	65	PerfVariable* _avg_survived_padded_avg_counter;
duke@435	66
duke@435	67	PerfVariable* _survivor_overflowed_counter;
duke@435	68	PerfVariable* _increment_tenuring_threshold_for_gc_cost_counter;
duke@435	69	PerfVariable* _decrement_tenuring_threshold_for_gc_cost_counter;
duke@435	70	PerfVariable* _decrement_tenuring_threshold_for_survivor_limit_counter;
duke@435	71
duke@435	72	PerfVariable* _minor_collection_slope_counter;
duke@435	73	PerfVariable* _major_collection_slope_counter;
duke@435	74
duke@435	75	AdaptiveSizePolicy* _size_policy;
duke@435	76
duke@435	77	inline void update_eden_size() {
duke@435	78	size_t eden_size_in_bytes = size_policy()->calculated_eden_size_in_bytes();
duke@435	79	_eden_size_counter->set_value(eden_size_in_bytes);
duke@435	80	}
duke@435	81
duke@435	82	inline void update_promo_size() {
duke@435	83	_promo_size_counter->set_value(
duke@435	84	size_policy()->calculated_promo_size_in_bytes());
duke@435	85	}
duke@435	86
duke@435	87	inline void update_avg_minor_pause_counter() {
duke@435	88	_avg_minor_pause_counter->set_value((jlong)
duke@435	89	(size_policy()->avg_minor_pause()->average() * 1000.0));
duke@435	90	}
duke@435	91	inline void update_avg_minor_interval_counter() {
duke@435	92	_avg_minor_interval_counter->set_value((jlong)
duke@435	93	(size_policy()->avg_minor_interval()->average() * 1000.0));
duke@435	94	}
duke@435	95
duke@435	96	#ifdef NOT_PRODUCT
duke@435	97	inline void update_minor_pause_counter() {
duke@435	98	_minor_pause_counter->set_value((jlong)
duke@435	99	(size_policy()->avg_minor_pause()->last_sample() * 1000.0));
duke@435	100	}
duke@435	101	#endif
duke@435	102	inline void update_minor_gc_cost_counter() {
duke@435	103	_minor_gc_cost_counter->set_value((jlong)
duke@435	104	(size_policy()->minor_gc_cost() * 100.0));
duke@435	105	}
duke@435	106
duke@435	107	inline void update_avg_young_live_counter() {
duke@435	108	_avg_young_live_counter->set_value(
duke@435	109	(jlong)(size_policy()->avg_young_live()->average())
duke@435	110	);
duke@435	111	}
duke@435	112
duke@435	113	inline void update_avg_survived_avg_counters() {
duke@435	114	_avg_survived_avg_counter->set_value(
duke@435	115	(jlong)(size_policy()->_avg_survived->average())
duke@435	116	);
duke@435	117	}
duke@435	118	inline void update_avg_survived_dev_counters() {
duke@435	119	_avg_survived_dev_counter->set_value(
duke@435	120	(jlong)(size_policy()->_avg_survived->deviation())
duke@435	121	);
duke@435	122	}
duke@435	123	inline void update_avg_survived_padded_avg_counters() {
duke@435	124	_avg_survived_padded_avg_counter->set_value(
duke@435	125	(jlong)(size_policy()->_avg_survived->padded_average())
duke@435	126	);
duke@435	127	}
duke@435	128
duke@435	129	inline void update_change_old_gen_for_throughput() {
duke@435	130	_change_old_gen_for_throughput_counter->set_value(
duke@435	131	size_policy()->change_old_gen_for_throughput());
duke@435	132	}
duke@435	133	inline void update_change_young_gen_for_throughput() {
duke@435	134	_change_young_gen_for_throughput_counter->set_value(
duke@435	135	size_policy()->change_young_gen_for_throughput());
duke@435	136	}
duke@435	137	inline void update_decrease_for_footprint() {
duke@435	138	_decrease_for_footprint_counter->set_value(
duke@435	139	size_policy()->decrease_for_footprint());
duke@435	140	}
duke@435	141
duke@435	142	inline void update_decide_at_full_gc_counter() {
duke@435	143	_decide_at_full_gc_counter->set_value(
duke@435	144	size_policy()->decide_at_full_gc());
duke@435	145	}
duke@435	146
duke@435	147	inline void update_minor_pause_young_slope_counter() {
duke@435	148	_minor_pause_young_slope_counter->set_value(
duke@435	149	(jlong)(size_policy()->minor_pause_young_slope() * 1000)
duke@435	150	);
duke@435	151	}
duke@435	152
duke@435	153	virtual void update_counters_from_policy();
duke@435	154
duke@435	155	protected:
duke@435	156	virtual AdaptiveSizePolicy* size_policy() { return _size_policy; }
duke@435	157
duke@435	158	public:
duke@435	159	GCAdaptivePolicyCounters(const char* name,
duke@435	160	int collectors,
duke@435	161	int generations,
duke@435	162	AdaptiveSizePolicy* size_policy);
duke@435	163
duke@435	164	inline void update_survived(size_t survived) {
duke@435	165	_survived_counter->set_value(survived);
duke@435	166	}
duke@435	167	inline void update_promoted(size_t promoted) {
duke@435	168	_promoted_counter->set_value(promoted);
duke@435	169	}
duke@435	170	inline void update_young_capacity(size_t size_in_bytes) {
duke@435	171	_young_capacity_counter->set_value(size_in_bytes);
duke@435	172	}
duke@435	173
duke@435	174	virtual void update_counters();
duke@435	175
duke@435	176	inline void update_survivor_size_counters() {
duke@435	177	desired_survivor_size()->set_value(
duke@435	178	size_policy()->calculated_survivor_size_in_bytes());
duke@435	179	}
duke@435	180	inline void update_survivor_overflowed(bool survivor_overflowed) {
duke@435	181	_survivor_overflowed_counter->set_value(survivor_overflowed);
duke@435	182	}
duke@435	183	inline void update_tenuring_threshold(int threshold) {
duke@435	184	tenuring_threshold()->set_value(threshold);
duke@435	185	}
duke@435	186	inline void update_increment_tenuring_threshold_for_gc_cost() {
duke@435	187	_increment_tenuring_threshold_for_gc_cost_counter->set_value(
duke@435	188	size_policy()->increment_tenuring_threshold_for_gc_cost());
duke@435	189	}
duke@435	190	inline void update_decrement_tenuring_threshold_for_gc_cost() {
duke@435	191	_decrement_tenuring_threshold_for_gc_cost_counter->set_value(
duke@435	192	size_policy()->decrement_tenuring_threshold_for_gc_cost());
duke@435	193	}
duke@435	194	inline void update_decrement_tenuring_threshold_for_survivor_limit() {
duke@435	195	_decrement_tenuring_threshold_for_survivor_limit_counter->set_value(
duke@435	196	size_policy()->decrement_tenuring_threshold_for_survivor_limit());
duke@435	197	}
duke@435	198	inline void update_change_young_gen_for_min_pauses() {
duke@435	199	_change_young_gen_for_min_pauses_counter->set_value(
duke@435	200	size_policy()->change_young_gen_for_min_pauses());
duke@435	201	}
duke@435	202	inline void update_change_old_gen_for_maj_pauses() {
duke@435	203	_change_old_gen_for_maj_pauses_counter->set_value(
duke@435	204	size_policy()->change_old_gen_for_maj_pauses());
duke@435	205	}
duke@435	206
duke@435	207	inline void update_minor_collection_slope_counter() {
duke@435	208	_minor_collection_slope_counter->set_value(
duke@435	209	(jlong)(size_policy()->minor_collection_slope() * 1000)
duke@435	210	);
duke@435	211	}
duke@435	212
duke@435	213	inline void update_major_collection_slope_counter() {
duke@435	214	_major_collection_slope_counter->set_value(
duke@435	215	(jlong)(size_policy()->major_collection_slope() * 1000)
duke@435	216	);
duke@435	217	}
duke@435	218
duke@435	219	void set_size_policy(AdaptiveSizePolicy* v) { _size_policy = v; }
duke@435	220
duke@435	221	virtual GCPolicyCounters::Name kind() const {
duke@435	222	return GCPolicyCounters::GCAdaptivePolicyCountersKind;
duke@435	223	}
duke@435	224	};