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annotate src/share/vm/gc_implementation/g1/g1RemSetSummary.hpp @ 12343:d55c004e1d4d

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8025305: Cleanup CardTableModRefBS usage in G1 Summary: Move some G1 specific code from CardTableModRefBS to G1SATBCardTableModRefBS. Reviewed-by: brutisso, tschatzl, ehelin
author mgerdin
date Tue, 24 Sep 2013 14:46:29 +0200
parents e72f7eecc96d
children 7ec10139bf37
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSETSUMMARY_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSETSUMMARY_HPP
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27
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28 #include "utilities/ostream.hpp"
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29
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30 class G1RemSet;
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31
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32 // A G1RemSetSummary manages statistical information about the G1RemSet
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33
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34 class G1RemSetSummary VALUE_OBJ_CLASS_SPEC {
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35 private:
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36 friend class GetRSThreadVTimeClosure;
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37
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38 G1RemSet* _remset;
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39
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40 G1RemSet* remset() const {
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41 return _remset;
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42 }
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43
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44 size_t _num_refined_cards;
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45 size_t _num_processed_buf_mutator;
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46 size_t _num_processed_buf_rs_threads;
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47
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48 size_t _num_coarsenings;
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49
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50 double* _rs_threads_vtimes;
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51 size_t _num_vtimes;
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52
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53 double _sampling_thread_vtime;
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54
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55 void set_rs_thread_vtime(uint thread, double value);
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56 void set_sampling_thread_vtime(double value) {
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57 _sampling_thread_vtime = value;
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58 }
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59
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60 void free_and_null() {
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61 if (_rs_threads_vtimes) {
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62 FREE_C_HEAP_ARRAY(double, _rs_threads_vtimes, mtGC);
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63 _rs_threads_vtimes = NULL;
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64 _num_vtimes = 0;
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65 }
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66 }
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67
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68 // update this summary with current data from various places
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69 void update();
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70
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71 public:
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72 G1RemSetSummary() : _remset(NULL), _num_refined_cards(0),
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73 _num_processed_buf_mutator(0), _num_processed_buf_rs_threads(0), _num_coarsenings(0),
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74 _rs_threads_vtimes(NULL), _num_vtimes(0), _sampling_thread_vtime(0.0f) {
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75 }
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76
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77 ~G1RemSetSummary() {
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78 free_and_null();
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79 }
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80
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81 // set the counters in this summary to the values of the others
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82 void set(G1RemSetSummary* other);
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83 // subtract all counters from the other summary, and set them in the current
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84 void subtract_from(G1RemSetSummary* other);
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85
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86 // initialize and get the first sampling
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87 void initialize(G1RemSet* remset, uint num_workers);
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88
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89 void print_on(outputStream* out);
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90
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91 double rs_thread_vtime(uint thread) const;
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92
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93 double sampling_thread_vtime() const {
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94 return _sampling_thread_vtime;
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95 }
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96
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97 size_t num_concurrent_refined_cards() const {
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98 return _num_refined_cards;
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99 }
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100
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101 size_t num_processed_buf_mutator() const {
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102 return _num_processed_buf_mutator;
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103 }
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104
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105 size_t num_processed_buf_rs_threads() const {
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106 return _num_processed_buf_rs_threads;
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107 }
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108
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109 size_t num_processed_buf_total() const {
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110 return num_processed_buf_mutator() + num_processed_buf_rs_threads();
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111 }
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112
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113 size_t num_coarsenings() const {
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114 return _num_coarsenings;
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115 }
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116 };
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117
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118 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSETSUMMARY_HPP