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comparison src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 8681:27714220e50e

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8007036: G1: Too many old regions added to last mixed GC Summary: Stop adding old regions to collection set when the remaining reclaimable bytes reaches, or goes below, G1HeapWastePercent. Changes were also reviewed by Vitaly Davidovich <vitalyd@gmail.com>. Reviewed-by: brutisso
author johnc
date Mon, 04 Mar 2013 12:42:14 -0800
parents a2f7274eb6ef
children de6a9e811145
comparison
equal deleted inserted replaced
8680:0624b9d81255 8681:27714220e50e
49 // The index of the next candidate old region to be considered for 49 // The index of the next candidate old region to be considered for
50 // addition to the CSet. 50 // addition to the CSet.
51 uint _curr_index; 51 uint _curr_index;
52 52
53 // The number of candidate old regions added to the CSet chooser. 53 // The number of candidate old regions added to the CSet chooser.
54 // Note: this is not updated when removing a region using
55 // remove_and_move_to_next() below.
54 uint _length; 56 uint _length;
55 57
56 // Keeps track of the start of the next array chunk to be claimed by 58 // Keeps track of the start of the next array chunk to be claimed by
57 // parallel GC workers. 59 // parallel GC workers.
58 uint _first_par_unreserved_idx; 60 uint _first_par_unreserved_idx;
109 assert(!hr->is_young(), "should never consider young regions"); 111 assert(!hr->is_young(), "should never consider young regions");
110 return !hr->isHumongous() && 112 return !hr->isHumongous() &&
111 hr->live_bytes() < _region_live_threshold_bytes; 113 hr->live_bytes() < _region_live_threshold_bytes;
112 } 114 }
113 115
114 // Calculate the minimum number of old regions we'll add to the CSet 116 // Returns the number candidate old regions added
115 // during a mixed GC. 117 uint length() { return _length; }
116 uint calc_min_old_cset_length();
117
118 // Calculate the maximum number of old regions we'll add to the CSet
119 // during a mixed GC.
120 uint calc_max_old_cset_length();
121 118
122 // Serial version. 119 // Serial version.
123 void add_region(HeapRegion *hr); 120 void add_region(HeapRegion *hr);
124 121
125 // Must be called before calls to claim_array_chunk(). 122 // Must be called before calls to claim_array_chunk().