1 /* 2 * Copyright (c) 2014, 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_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP 26 #define SHARE_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP 27 28 #include "memory/allocation.hpp" 29 #include "runtime/os.hpp" 30 31 // Macros for GC log output formating 32 #define STRDEDUP_OBJECTS_FORMAT UINTX_FORMAT_W(12) 33 #define STRDEDUP_TIME_FORMAT "%.3fs" 34 #define STRDEDUP_TIME_PARAM(time) (time) 35 #define STRDEDUP_TIME_FORMAT_MS "%.3fms" 36 #define STRDEDUP_TIME_PARAM_MS(time) ((time) * MILLIUNITS) 37 #define STRDEDUP_PERCENT_FORMAT "%5.1f%%" 38 #define STRDEDUP_PERCENT_FORMAT_NS "%.1f%%" 39 #define STRDEDUP_BYTES_FORMAT "%8.1f%s" 40 #define STRDEDUP_BYTES_FORMAT_NS "%.1f%s" 41 #define STRDEDUP_BYTES_PARAM(bytes) byte_size_in_proper_unit((double)(bytes)), proper_unit_for_byte_size((bytes)) 42 43 // 44 // Statistics gathered by the deduplication thread. 45 // 46 class StringDedupStat : public CHeapObj<mtGC> { 47 protected: 48 // Counters 49 uintx _inspected; 50 uintx _skipped; 51 uintx _hashed; 52 uintx _known; 53 uintx _new; 54 uintx _new_bytes; 55 uintx _deduped; 56 uintx _deduped_bytes; 57 uintx _idle; 58 uintx _exec; 59 uintx _block; 60 61 // Time spent by the deduplication thread in different phases 62 double _start_concurrent; 63 double _end_concurrent; 64 double _start_phase; 65 double _idle_elapsed; 66 double _exec_elapsed; 67 double _block_elapsed; 68 69 public: 70 StringDedupStat(); 71 inc_inspected()72 void inc_inspected() { 73 _inspected++; 74 } 75 inc_skipped()76 void inc_skipped() { 77 _skipped++; 78 } 79 inc_hashed()80 void inc_hashed() { 81 _hashed++; 82 } 83 inc_known()84 void inc_known() { 85 _known++; 86 } 87 inc_new(uintx bytes)88 void inc_new(uintx bytes) { 89 _new++; 90 _new_bytes += bytes; 91 } 92 deduped(oop obj,uintx bytes)93 virtual void deduped(oop obj, uintx bytes) { 94 _deduped++; 95 _deduped_bytes += bytes; 96 } 97 mark_idle()98 void mark_idle() { 99 _start_phase = os::elapsedTime(); 100 _idle++; 101 } 102 mark_exec()103 void mark_exec() { 104 double now = os::elapsedTime(); 105 _idle_elapsed = now - _start_phase; 106 _start_phase = now; 107 _start_concurrent = now; 108 _exec++; 109 } 110 mark_block()111 void mark_block() { 112 double now = os::elapsedTime(); 113 _exec_elapsed += now - _start_phase; 114 _start_phase = now; 115 _block++; 116 } 117 mark_unblock()118 void mark_unblock() { 119 double now = os::elapsedTime(); 120 _block_elapsed += now - _start_phase; 121 _start_phase = now; 122 } 123 mark_done()124 void mark_done() { 125 double now = os::elapsedTime(); 126 _exec_elapsed += now - _start_phase; 127 _end_concurrent = now; 128 } 129 130 virtual void reset(); 131 virtual void add(const StringDedupStat* const stat); 132 virtual void print_statistics(bool total) const; 133 134 static void print_start(const StringDedupStat* last_stat); 135 static void print_end(const StringDedupStat* last_stat, const StringDedupStat* total_stat); 136 }; 137 138 #endif // SHARE_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP 139