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