1 /* 2 * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_GC_G1_G1REMSETSUMMARY_HPP 26 #define SHARE_GC_G1_G1REMSETSUMMARY_HPP 27 28 #include "utilities/globalDefinitions.hpp" 29 #include "utilities/ostream.hpp" 30 31 class G1RemSet; 32 33 // A G1RemSetSummary manages statistical information about the G1RemSet 34 35 class G1RemSetSummary { 36 private: 37 friend class GetRSThreadVTimeClosure; 38 39 size_t _total_mutator_refined_cards; 40 size_t _total_concurrent_refined_cards; 41 42 size_t _num_coarsenings; 43 44 size_t _num_vtimes; 45 double* _rs_threads_vtimes; 46 47 double _sampling_thread_vtime; 48 49 void set_rs_thread_vtime(uint thread, double value); 50 void set_sampling_thread_vtime(double value) { 51 _sampling_thread_vtime = value; 52 } 53 54 // update this summary with current data from various places 55 void update(); 56 57 public: 58 G1RemSetSummary(bool should_update = true); 59 60 ~G1RemSetSummary(); 61 62 // set the counters in this summary to the values of the others 63 void set(G1RemSetSummary* other); 64 // subtract all counters from the other summary, and set them in the current 65 void subtract_from(G1RemSetSummary* other); 66 67 void print_on(outputStream* out); 68 69 double rs_thread_vtime(uint thread) const; 70 71 double sampling_thread_vtime() const { 72 return _sampling_thread_vtime; 73 } 74 75 size_t total_mutator_refined_cards() const { 76 return _total_mutator_refined_cards; 77 } 78 79 size_t total_concurrent_refined_cards() const { 80 return _total_concurrent_refined_cards; 81 } 82 83 size_t total_refined_cards() const { 84 return total_mutator_refined_cards() + total_concurrent_refined_cards(); 85 } 86 87 size_t num_coarsenings() const { 88 return _num_coarsenings; 89 } 90 }; 91 92 #endif // SHARE_GC_G1_G1REMSETSUMMARY_HPP