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src/share/vm/gc_implementation/g1/survRateGroup.hpp@0fbdb4381b99 (annotated)
src/share/vm/gc_implementation/g1/survRateGroup.hpp
Mon, 09 Mar 2009 13:28:46 -0700
- author
- xdono
- date
- Mon, 09 Mar 2009 13:28:46 -0700
- changeset 1014
- 0fbdb4381b99
- parent 980
- 58054a18d735
- child 1829
- 1316cec51b4d
- permissions
- -rw-r--r--
6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair
| ysr@777 | 1 | /* |
| xdono@1014 | 2 | * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. |
| ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| ysr@777 | 4 | * |
| ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
| ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| ysr@777 | 7 | * published by the Free Software Foundation. |
| ysr@777 | 8 | * |
| ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| ysr@777 | 13 | * accompanied this code). |
| ysr@777 | 14 | * |
| ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
| ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| ysr@777 | 18 | * |
| ysr@777 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| ysr@777 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| ysr@777 | 21 | * have any questions. |
| ysr@777 | 22 | * |
| ysr@777 | 23 | */ |
| ysr@777 | 24 | |
| ysr@777 | 25 | class G1CollectorPolicy; |
| ysr@777 | 26 | |
| ysr@777 | 27 | class SurvRateGroup : public CHeapObj { |
| ysr@777 | 28 | private: |
| ysr@777 | 29 | G1CollectorPolicy* _g1p; |
| ysr@777 | 30 | const char* _name; |
| ysr@777 | 31 | |
| apetrusenko@980 | 32 | size_t _stats_arrays_length; |
| ysr@777 | 33 | double* _surv_rate; |
| ysr@777 | 34 | double* _accum_surv_rate_pred; |
| ysr@777 | 35 | double _last_pred; |
| ysr@777 | 36 | double _accum_surv_rate; |
| ysr@777 | 37 | TruncatedSeq** _surv_rate_pred; |
| ysr@777 | 38 | NumberSeq** _summary_surv_rates; |
| ysr@777 | 39 | size_t _summary_surv_rates_len; |
| ysr@777 | 40 | size_t _summary_surv_rates_max_len; |
| ysr@777 | 41 | |
| ysr@777 | 42 | int _all_regions_allocated; |
| apetrusenko@980 | 43 | size_t _region_num; |
| ysr@777 | 44 | size_t _scan_only_prefix; |
| ysr@777 | 45 | size_t _setup_seq_num; |
| ysr@777 | 46 | |
| ysr@777 | 47 | public: |
| ysr@777 | 48 | SurvRateGroup(G1CollectorPolicy* g1p, |
| ysr@777 | 49 | const char* name, |
| ysr@777 | 50 | size_t summary_surv_rates_len); |
| apetrusenko@980 | 51 | void reset(); |
| ysr@777 | 52 | void start_adding_regions(); |
| ysr@777 | 53 | void stop_adding_regions(); |
| ysr@777 | 54 | void record_scan_only_prefix(size_t scan_only_prefix); |
| ysr@777 | 55 | void record_surviving_words(int age_in_group, size_t surv_words); |
| ysr@777 | 56 | void all_surviving_words_recorded(bool propagate); |
| ysr@777 | 57 | const char* name() { return _name; } |
| ysr@777 | 58 | |
| apetrusenko@980 | 59 | size_t region_num() { return _region_num; } |
| ysr@777 | 60 | size_t scan_only_length() { return _scan_only_prefix; } |
| ysr@777 | 61 | double accum_surv_rate_pred(int age) { |
| ysr@777 | 62 | assert(age >= 0, "must be"); |
| apetrusenko@980 | 63 | if ((size_t)age < _stats_arrays_length) |
| ysr@777 | 64 | return _accum_surv_rate_pred[age]; |
| ysr@777 | 65 | else { |
| apetrusenko@980 | 66 | double diff = (double) (age - _stats_arrays_length + 1); |
| apetrusenko@980 | 67 | return _accum_surv_rate_pred[_stats_arrays_length-1] + diff * _last_pred; |
| ysr@777 | 68 | } |
| ysr@777 | 69 | } |
| ysr@777 | 70 | |
| ysr@777 | 71 | double accum_surv_rate(size_t adjustment); |
| ysr@777 | 72 | |
| ysr@777 | 73 | TruncatedSeq* get_seq(size_t age) { |
| ysr@777 | 74 | if (age >= _setup_seq_num) { |
| ysr@777 | 75 | guarantee( _setup_seq_num > 0, "invariant" ); |
| ysr@777 | 76 | age = _setup_seq_num-1; |
| ysr@777 | 77 | } |
| ysr@777 | 78 | TruncatedSeq* seq = _surv_rate_pred[age]; |
| ysr@777 | 79 | guarantee( seq != NULL, "invariant" ); |
| ysr@777 | 80 | return seq; |
| ysr@777 | 81 | } |
| ysr@777 | 82 | |
| ysr@777 | 83 | int next_age_index(); |
| ysr@777 | 84 | int age_in_group(int age_index) { |
| ysr@777 | 85 | int ret = (int) (_all_regions_allocated - age_index); |
| ysr@777 | 86 | assert( ret >= 0, "invariant" ); |
| ysr@777 | 87 | return ret; |
| ysr@777 | 88 | } |
| ysr@777 | 89 | int recalculate_age_index(int age_index) { |
| ysr@777 | 90 | int new_age_index = (int) _scan_only_prefix - age_in_group(age_index); |
| ysr@777 | 91 | guarantee( new_age_index >= 0, "invariant" ); |
| ysr@777 | 92 | return new_age_index; |
| ysr@777 | 93 | } |
| ysr@777 | 94 | void finished_recalculating_age_indexes() { |
| ysr@777 | 95 | _all_regions_allocated = (int) _scan_only_prefix; |
| ysr@777 | 96 | } |
| ysr@777 | 97 | |
| ysr@777 | 98 | #ifndef PRODUCT |
| ysr@777 | 99 | void print(); |
| ysr@777 | 100 | void print_surv_rate_summary(); |
| ysr@777 | 101 | #endif // PRODUCT |
| ysr@777 | 102 | }; |
