1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/gc_implementation/g1/survRateGroup.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,101 @@
1.4 +/*
1.5 + * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP
1.29 +#define SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP
1.30 +
1.31 +#include "utilities/numberSeq.hpp"
1.32 +
1.33 +class G1CollectorPolicy;
1.34 +
1.35 +class SurvRateGroup : public CHeapObj<mtGC> {
1.36 +private:
1.37 + G1CollectorPolicy* _g1p;
1.38 + const char* _name;
1.39 +
1.40 + size_t _stats_arrays_length;
1.41 + double* _surv_rate;
1.42 + double* _accum_surv_rate_pred;
1.43 + double _last_pred;
1.44 + double _accum_surv_rate;
1.45 + TruncatedSeq** _surv_rate_pred;
1.46 + NumberSeq** _summary_surv_rates;
1.47 + size_t _summary_surv_rates_len;
1.48 + size_t _summary_surv_rates_max_len;
1.49 +
1.50 + int _all_regions_allocated;
1.51 + size_t _region_num;
1.52 + size_t _setup_seq_num;
1.53 +
1.54 +public:
1.55 + SurvRateGroup(G1CollectorPolicy* g1p,
1.56 + const char* name,
1.57 + size_t summary_surv_rates_len);
1.58 + void reset();
1.59 + void start_adding_regions();
1.60 + void stop_adding_regions();
1.61 + void record_surviving_words(int age_in_group, size_t surv_words);
1.62 + void all_surviving_words_recorded(bool propagate);
1.63 + const char* name() { return _name; }
1.64 +
1.65 + size_t region_num() { return _region_num; }
1.66 + double accum_surv_rate_pred(int age) {
1.67 + assert(age >= 0, "must be");
1.68 + if ((size_t)age < _stats_arrays_length)
1.69 + return _accum_surv_rate_pred[age];
1.70 + else {
1.71 + double diff = (double) (age - _stats_arrays_length + 1);
1.72 + return _accum_surv_rate_pred[_stats_arrays_length-1] + diff * _last_pred;
1.73 + }
1.74 + }
1.75 +
1.76 + double accum_surv_rate(size_t adjustment);
1.77 +
1.78 + TruncatedSeq* get_seq(size_t age) {
1.79 + if (age >= _setup_seq_num) {
1.80 + guarantee( _setup_seq_num > 0, "invariant" );
1.81 + age = _setup_seq_num-1;
1.82 + }
1.83 + TruncatedSeq* seq = _surv_rate_pred[age];
1.84 + guarantee( seq != NULL, "invariant" );
1.85 + return seq;
1.86 + }
1.87 +
1.88 + int next_age_index();
1.89 + int age_in_group(int age_index) {
1.90 + int ret = (int) (_all_regions_allocated - age_index);
1.91 + assert( ret >= 0, "invariant" );
1.92 + return ret;
1.93 + }
1.94 + void finished_recalculating_age_indexes() {
1.95 + _all_regions_allocated = 0;
1.96 + }
1.97 +
1.98 +#ifndef PRODUCT
1.99 + void print();
1.100 + void print_surv_rate_summary();
1.101 +#endif // PRODUCT
1.102 +};
1.103 +
1.104 +#endif // SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP
