Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/survRateGroup.hpp @ 7403:807f1d348f7b
Merge
author | collins |
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date | Fri, 14 Dec 2012 11:45:55 -0800 |
parents | b9a9ed0f8eeb |
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/* * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP #include "utilities/numberSeq.hpp" class G1CollectorPolicy; class SurvRateGroup : public CHeapObj<mtGC> { private: G1CollectorPolicy* _g1p; const char* _name; size_t _stats_arrays_length; double* _surv_rate; double* _accum_surv_rate_pred; double _last_pred; double _accum_surv_rate; TruncatedSeq** _surv_rate_pred; NumberSeq** _summary_surv_rates; size_t _summary_surv_rates_len; size_t _summary_surv_rates_max_len; int _all_regions_allocated; size_t _region_num; size_t _setup_seq_num; public: SurvRateGroup(G1CollectorPolicy* g1p, const char* name, size_t summary_surv_rates_len); void reset(); void start_adding_regions(); void stop_adding_regions(); void record_surviving_words(int age_in_group, size_t surv_words); void all_surviving_words_recorded(bool propagate); const char* name() { return _name; } size_t region_num() { return _region_num; } double accum_surv_rate_pred(int age) { assert(age >= 0, "must be"); if ((size_t)age < _stats_arrays_length) return _accum_surv_rate_pred[age]; else { double diff = (double) (age - _stats_arrays_length + 1); return _accum_surv_rate_pred[_stats_arrays_length-1] + diff * _last_pred; } } double accum_surv_rate(size_t adjustment); TruncatedSeq* get_seq(size_t age) { if (age >= _setup_seq_num) { guarantee( _setup_seq_num > 0, "invariant" ); age = _setup_seq_num-1; } TruncatedSeq* seq = _surv_rate_pred[age]; guarantee( seq != NULL, "invariant" ); return seq; } int next_age_index(); int age_in_group(int age_index) { int ret = (int) (_all_regions_allocated - age_index); assert( ret >= 0, "invariant" ); return ret; } void finished_recalculating_age_indexes() { _all_regions_allocated = 0; } #ifndef PRODUCT void print(); void print_surv_rate_summary(); #endif // PRODUCT }; #endif // SHARE_VM_GC_IMPLEMENTATION_G1_SURVRATEGROUP_HPP