• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/gc_implementation/g1/survRateGroup.hpp@710a3c8b516e (annotated)

src/share/vm/gc_implementation/g1/survRateGroup.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) 2001, 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_G1_SURVRATEGROUP_HPP
aoqi@0	26	#define SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP
aoqi@0	27
aoqi@0	28	#include "utilities/numberSeq.hpp"
aoqi@0	29
aoqi@0	30	class G1CollectorPolicy;
aoqi@0	31
aoqi@0	32	class SurvRateGroup : public CHeapObj<mtGC> {
aoqi@0	33	private:
aoqi@0	34	G1CollectorPolicy* _g1p;
aoqi@0	35	const char* _name;
aoqi@0	36
aoqi@0	37	size_t _stats_arrays_length;
aoqi@0	38	double* _surv_rate;
aoqi@0	39	double* _accum_surv_rate_pred;
aoqi@0	40	double _last_pred;
aoqi@0	41	double _accum_surv_rate;
aoqi@0	42	TruncatedSeq** _surv_rate_pred;
aoqi@0	43	NumberSeq** _summary_surv_rates;
aoqi@0	44	size_t _summary_surv_rates_len;
aoqi@0	45	size_t _summary_surv_rates_max_len;
aoqi@0	46
aoqi@0	47	int _all_regions_allocated;
aoqi@0	48	size_t _region_num;
aoqi@0	49	size_t _setup_seq_num;
aoqi@0	50
aoqi@0	51	public:
aoqi@0	52	SurvRateGroup(G1CollectorPolicy* g1p,
aoqi@0	53	const char* name,
aoqi@0	54	size_t summary_surv_rates_len);
aoqi@0	55	void reset();
aoqi@0	56	void start_adding_regions();
aoqi@0	57	void stop_adding_regions();
aoqi@0	58	void record_surviving_words(int age_in_group, size_t surv_words);
aoqi@0	59	void all_surviving_words_recorded(bool propagate);
aoqi@0	60	const char* name() { return _name; }
aoqi@0	61
aoqi@0	62	size_t region_num() { return _region_num; }
aoqi@0	63	double accum_surv_rate_pred(int age) {
aoqi@0	64	assert(age >= 0, "must be");
aoqi@0	65	if ((size_t)age < _stats_arrays_length)
aoqi@0	66	return _accum_surv_rate_pred[age];
aoqi@0	67	else {
aoqi@0	68	double diff = (double) (age - _stats_arrays_length + 1);
aoqi@0	69	return _accum_surv_rate_pred[_stats_arrays_length-1] + diff * _last_pred;
aoqi@0	70	}
aoqi@0	71	}
aoqi@0	72
aoqi@0	73	double accum_surv_rate(size_t adjustment);
aoqi@0	74
aoqi@0	75	TruncatedSeq* get_seq(size_t age) {
aoqi@0	76	if (age >= _setup_seq_num) {
aoqi@0	77	guarantee( _setup_seq_num > 0, "invariant" );
aoqi@0	78	age = _setup_seq_num-1;
aoqi@0	79	}
aoqi@0	80	TruncatedSeq* seq = _surv_rate_pred[age];
aoqi@0	81	guarantee( seq != NULL, "invariant" );
aoqi@0	82	return seq;
aoqi@0	83	}
aoqi@0	84
aoqi@0	85	int next_age_index();
aoqi@0	86	int age_in_group(int age_index) {
aoqi@0	87	int ret = (int) (_all_regions_allocated - age_index);
aoqi@0	88	assert( ret >= 0, "invariant" );
aoqi@0	89	return ret;
aoqi@0	90	}
aoqi@0	91	void finished_recalculating_age_indexes() {
aoqi@0	92	_all_regions_allocated = 0;
aoqi@0	93	}
aoqi@0	94
aoqi@0	95	#ifndef PRODUCT
aoqi@0	96	void print();
aoqi@0	97	void print_surv_rate_summary();
aoqi@0	98	#endif // PRODUCT
aoqi@0	99	};
aoqi@0	100
aoqi@0	101	#endif // SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP