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comparison src/share/vm/gc_implementation/g1/survRateGroup.hpp @ 1394:1316cec51b4d

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6819061: G1: eliminate serial Other times that are proportional to the collection set length 6871109: G1: remove the concept of the scan only prefix Summary: Removed scan only regions and associated code. The young portion of the collection set is now constructed incrementally - when a young region is retired as the current allocation region it is added to the collection set. Reviewed-by: apetrusenko, iveresov, tonyp
author johnc
date Thu, 22 Apr 2010 10:02:38 -0700
parents 0fbdb4381b99
children c18cbe5936b8
comparison
equal deleted inserted replaced
1393:6ecb6e6de3d6 1394:1316cec51b4d
1 /* 1 /*
2 * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 2001-2010 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
39 size_t _summary_surv_rates_len; 39 size_t _summary_surv_rates_len;
40 size_t _summary_surv_rates_max_len; 40 size_t _summary_surv_rates_max_len;
41 41
42 int _all_regions_allocated; 42 int _all_regions_allocated;
43 size_t _region_num; 43 size_t _region_num;
44 size_t _scan_only_prefix;
45 size_t _setup_seq_num; 44 size_t _setup_seq_num;
46 45
47 public: 46 public:
48 SurvRateGroup(G1CollectorPolicy* g1p, 47 SurvRateGroup(G1CollectorPolicy* g1p,
49 const char* name, 48 const char* name,
50 size_t summary_surv_rates_len); 49 size_t summary_surv_rates_len);
51 void reset(); 50 void reset();
52 void start_adding_regions(); 51 void start_adding_regions();
53 void stop_adding_regions(); 52 void stop_adding_regions();
54 void record_scan_only_prefix(size_t scan_only_prefix);
55 void record_surviving_words(int age_in_group, size_t surv_words); 53 void record_surviving_words(int age_in_group, size_t surv_words);
56 void all_surviving_words_recorded(bool propagate); 54 void all_surviving_words_recorded(bool propagate);
57 const char* name() { return _name; } 55 const char* name() { return _name; }
58 56
59 size_t region_num() { return _region_num; } 57 size_t region_num() { return _region_num; }
60 size_t scan_only_length() { return _scan_only_prefix; }
61 double accum_surv_rate_pred(int age) { 58 double accum_surv_rate_pred(int age) {
62 assert(age >= 0, "must be"); 59 assert(age >= 0, "must be");
63 if ((size_t)age < _stats_arrays_length) 60 if ((size_t)age < _stats_arrays_length)
64 return _accum_surv_rate_pred[age]; 61 return _accum_surv_rate_pred[age];
65 else { 62 else {
80 return seq; 77 return seq;
81 } 78 }
82 79
83 int next_age_index(); 80 int next_age_index();
84 int age_in_group(int age_index) { 81 int age_in_group(int age_index) {
85 int ret = (int) (_all_regions_allocated - age_index); 82 int ret = (int) (_all_regions_allocated - age_index);
86 assert( ret >= 0, "invariant" ); 83 assert( ret >= 0, "invariant" );
87 return ret; 84 return ret;
88 } 85 }
89 int recalculate_age_index(int age_index) {
90 int new_age_index = (int) _scan_only_prefix - age_in_group(age_index);
91 guarantee( new_age_index >= 0, "invariant" );
92 return new_age_index;
93 }
94 void finished_recalculating_age_indexes() { 86 void finished_recalculating_age_indexes() {
95 _all_regions_allocated = (int) _scan_only_prefix; 87 _all_regions_allocated = 0;
96 } 88 }
97 89
98 #ifndef PRODUCT 90 #ifndef PRODUCT
99 void print(); 91 void print();
100 void print_surv_rate_summary(); 92 void print_surv_rate_summary();