1 /* 2 * Copyright (c) 1997, 2015, 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 #include "precompiled.hpp" 26 #include "oops/oop.inline.hpp" 27 #include "runtime/timer.hpp" 28 #include "utilities/ostream.hpp" 29 30 double TimeHelper::counter_to_seconds(jlong counter) { 31 double freq = (double) os::elapsed_frequency(); 32 return counter / freq; 33 } 34 35 double TimeHelper::counter_to_millis(jlong counter) { 36 return counter_to_seconds(counter) * 1000.0; 37 } 38 39 elapsedTimer::elapsedTimer(jlong time, jlong timeUnitsPerSecond) { 40 _active = false; 41 jlong osTimeUnitsPerSecond = os::elapsed_frequency(); 42 assert(osTimeUnitsPerSecond % 1000 == 0, "must be"); 43 assert(timeUnitsPerSecond % 1000 == 0, "must be"); 44 while (osTimeUnitsPerSecond < timeUnitsPerSecond) { 45 timeUnitsPerSecond /= 1000; 46 time *= 1000; 47 } 48 while (osTimeUnitsPerSecond > timeUnitsPerSecond) { 49 timeUnitsPerSecond *= 1000; 50 time /= 1000; 51 } 52 _counter = time; 53 } 54 55 void elapsedTimer::add(elapsedTimer t) { 56 _counter += t._counter; 57 } 58 59 void elapsedTimer::start() { 60 if (!_active) { 61 _active = true; 62 _start_counter = os::elapsed_counter(); 63 } 64 } 65 66 void elapsedTimer::stop() { 67 if (_active) { 68 _counter += os::elapsed_counter() - _start_counter; 69 _active = false; 70 } 71 } 72 73 double elapsedTimer::seconds() const { 74 return TimeHelper::counter_to_seconds(_counter); 75 } 76 77 jlong elapsedTimer::milliseconds() const { 78 return (jlong)TimeHelper::counter_to_millis(_counter); 79 } 80 81 jlong elapsedTimer::active_ticks() const { 82 if (!_active) { 83 return ticks(); 84 } 85 jlong counter = _counter + os::elapsed_counter() - _start_counter; 86 return counter; 87 } 88 89 void TimeStamp::update_to(jlong ticks) { 90 _counter = ticks; 91 if (_counter == 0) _counter = 1; 92 assert(is_updated(), "must not look clear"); 93 } 94 95 void TimeStamp::update() { 96 update_to(os::elapsed_counter()); 97 } 98 99 double TimeStamp::seconds() const { 100 assert(is_updated(), "must not be clear"); 101 jlong new_count = os::elapsed_counter(); 102 return TimeHelper::counter_to_seconds(new_count - _counter); 103 } 104 105 jlong TimeStamp::milliseconds() const { 106 assert(is_updated(), "must not be clear"); 107 jlong new_count = os::elapsed_counter(); 108 return (jlong)TimeHelper::counter_to_millis(new_count - _counter); 109 } 110 111 jlong TimeStamp::ticks_since_update() const { 112 assert(is_updated(), "must not be clear"); 113 return os::elapsed_counter() - _counter; 114 } 115 116 TraceTime::TraceTime(const char* title, 117 bool doit) { 118 _active = doit; 119 _verbose = true; 120 121 if (_active) { 122 _accum = NULL; 123 tty->stamp(PrintGCTimeStamps); 124 tty->print("[%s", title); 125 tty->flush(); 126 _t.start(); 127 } 128 } 129 130 TraceTime::TraceTime(const char* title, 131 elapsedTimer* accumulator, 132 bool doit, 133 bool verbose) { 134 _active = doit; 135 _verbose = verbose; 136 if (_active) { 137 if (_verbose) { 138 tty->stamp(PrintGCTimeStamps); 139 tty->print("[%s", title); 140 tty->flush(); 141 } 142 _accum = accumulator; 143 _t.start(); 144 } 145 } 146 147 TraceTime::~TraceTime() { 148 if (_active) { 149 _t.stop(); 150 if (_accum!=NULL) _accum->add(_t); 151 if (_verbose) { 152 tty->print_cr(", %3.7f secs]", _t.seconds()); 153 tty->flush(); 154 } 155 } 156 } 157 158 TraceCPUTime::TraceCPUTime(bool doit, 159 bool print_cr, 160 outputStream *logfile) : 161 _active(doit), 162 _print_cr(print_cr), 163 _starting_user_time(0.0), 164 _starting_system_time(0.0), 165 _starting_real_time(0.0), 166 _logfile(logfile), 167 _error(false) { 168 if (_active) { 169 if (logfile != NULL) { 170 _logfile = logfile; 171 } else { 172 _logfile = tty; 173 } 174 175 _error = !os::getTimesSecs(&_starting_real_time, 176 &_starting_user_time, 177 &_starting_system_time); 178 } 179 } 180 181 TraceCPUTime::~TraceCPUTime() { 182 if (_active) { 183 bool valid = false; 184 if (!_error) { 185 double real_secs; // walk clock time 186 double system_secs; // system time 187 double user_secs; // user time for all threads 188 189 double real_time, user_time, system_time; 190 valid = os::getTimesSecs(&real_time, &user_time, &system_time); 191 if (valid) { 192 193 user_secs = user_time - _starting_user_time; 194 system_secs = system_time - _starting_system_time; 195 real_secs = real_time - _starting_real_time; 196 197 _logfile->print(" [Times: user=%3.2f sys=%3.2f real=%3.2f secs] ", 198 user_secs, system_secs, real_secs); 199 200 } else { 201 _logfile->print("[Invalid result in TraceCPUTime]"); 202 } 203 } else { 204 _logfile->print("[Error in TraceCPUTime]"); 205 } 206 if (_print_cr) { 207 _logfile->cr(); 208 } 209 _logfile->flush(); 210 } 211 }