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 size_t _total_mutator_refined_cards; 38 size_t _total_concurrent_refined_cards; 39 40 size_t _num_coarsenings; 41 42 size_t _num_vtimes; 43 double* _rs_threads_vtimes; 44 45 double _sampling_thread_vtime; 46 47 // Snapshot of counters from G1EpochSynchronizerCounters 48 size_t _num_fast_sync; 49 size_t _num_no_handshake_sync; 50 size_t _num_handshake_sync; 51 size_t _no_handshake_accum_time_ms; 52 size_t _handshake_accum_time_ms; 53 size_t _num_handshake_no_safepoint; 54 size_t _num_handshake_safepoint; 55 56 void set_rs_thread_vtime(uint thread, double value); 57 void set_sampling_thread_vtime(double value) { 58 _sampling_thread_vtime = value; 59 } 60 61 // update this summary with current data from various places 62 void update(); 63 64 public: 65 G1RemSetSummary(bool should_update = true); 66 67 ~G1RemSetSummary(); 68 69 // set the counters in this summary to the values of the others 70 void set(G1RemSetSummary* other); 71 // subtract all counters from the other summary, and set them in the current 72 void subtract_from(G1RemSetSummary* other); 73 74 void print_on(outputStream* out); 75 76 double rs_thread_vtime(uint thread) const; 77 78 double sampling_thread_vtime() const { 79 return _sampling_thread_vtime; 80 } 81 82 size_t total_mutator_refined_cards() const { 83 return _total_mutator_refined_cards; 84 } 85 86 size_t total_concurrent_refined_cards() const { 87 return _total_concurrent_refined_cards; 88 } 89 90 size_t total_refined_cards() const { 91 return total_mutator_refined_cards() + total_concurrent_refined_cards(); 92 } 93 94 size_t num_coarsenings() const { 95 return _num_coarsenings; 96 } 97 98 size_t num_fast_sync() const { 99 return _num_fast_sync; 100 } 101 102 size_t num_no_handshake_sync() const { 103 return _num_no_handshake_sync; 104 } 105 106 size_t num_handshake_sync() const { 107 return _num_handshake_sync; 108 } 109 110 size_t no_handshake_accum_time_ms() const { 111 return _no_handshake_accum_time_ms; 112 } 113 114 size_t handshake_accum_time_ms() const { 115 return _handshake_accum_time_ms; 116 } 117 118 size_t num_handshake_no_safepoint() const { 119 return _num_handshake_no_safepoint; 120 } 121 122 size_t num_handshake_safepoint() const { 123 return _num_handshake_safepoint; 124 } 125 }; 126 127 #endif // SHARE_GC_G1_G1REMSETSUMMARY_HPP