annotate src/share/vm/runtime/timer.cpp @ 3960:f08d439fab8c

7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author never
date Sun, 25 Sep 2011 16:03:29 -0700
parents f95d63e2154a
children 9646b7ff4d14
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1 /*
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2 * Copyright (c) 1997, 2010, 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
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
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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 #include "precompiled.hpp"
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26 #include "oops/oop.inline.hpp"
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27 #include "runtime/timer.hpp"
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28 #include "utilities/ostream.hpp"
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29 #ifdef TARGET_OS_FAMILY_linux
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30 # include "os_linux.inline.hpp"
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31 #endif
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32 #ifdef TARGET_OS_FAMILY_solaris
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33 # include "os_solaris.inline.hpp"
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34 #endif
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35 #ifdef TARGET_OS_FAMILY_windows
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36 # include "os_windows.inline.hpp"
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37 #endif
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38 #ifdef TARGET_OS_FAMILY_bsd
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39 # include "os_bsd.inline.hpp"
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40 #endif
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41
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42
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43 void elapsedTimer::add(elapsedTimer t) {
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44 _counter += t._counter;
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45 }
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46
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47 void elapsedTimer::start() {
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48 if (!_active) {
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49 _active = true;
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50 _start_counter = os::elapsed_counter();
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51 }
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52 }
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53
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54 void elapsedTimer::stop() {
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55 if (_active) {
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56 _counter += os::elapsed_counter() - _start_counter;
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57 _active = false;
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58 }
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59 }
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60
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61 double elapsedTimer::seconds() const {
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62 double count = (double) _counter;
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63 double freq = (double) os::elapsed_frequency();
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64 return count/freq;
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65 }
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66
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67 jlong elapsedTimer::milliseconds() const {
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68 jlong ticks_per_ms = os::elapsed_frequency() / 1000;
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69 return _counter / ticks_per_ms;
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70 }
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71
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72 jlong elapsedTimer::active_ticks() const {
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73 if (!_active) {
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74 return ticks();
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75 }
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76 jlong counter = _counter + os::elapsed_counter() - _start_counter;
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77 return counter;
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78 }
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79
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80 void TimeStamp::update_to(jlong ticks) {
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81 _counter = ticks;
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82 if (_counter == 0) _counter = 1;
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83 assert(is_updated(), "must not look clear");
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84 }
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85
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86 void TimeStamp::update() {
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87 update_to(os::elapsed_counter());
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88 }
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89
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90 double TimeStamp::seconds() const {
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91 assert(is_updated(), "must not be clear");
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92 jlong new_count = os::elapsed_counter();
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93 double count = (double) new_count - _counter;
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94 double freq = (double) os::elapsed_frequency();
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95 return count/freq;
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96 }
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97
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98 jlong TimeStamp::milliseconds() const {
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99 assert(is_updated(), "must not be clear");
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100
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101 jlong new_count = os::elapsed_counter();
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102 jlong count = new_count - _counter;
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103 jlong ticks_per_ms = os::elapsed_frequency() / 1000;
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104 return count / ticks_per_ms;
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105 }
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106
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107 jlong TimeStamp::ticks_since_update() const {
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108 assert(is_updated(), "must not be clear");
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109 return os::elapsed_counter() - _counter;
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110 }
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111
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112 TraceTime::TraceTime(const char* title,
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113 bool doit,
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114 bool print_cr,
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115 outputStream* logfile) {
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116 _active = doit;
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117 _verbose = true;
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118 _print_cr = print_cr;
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119 _logfile = (logfile != NULL) ? logfile : tty;
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120
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121 if (_active) {
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122 _accum = NULL;
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123 if (PrintGCTimeStamps) {
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124 _logfile->stamp();
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125 _logfile->print(": ");
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126 }
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127 _logfile->print("[%s", title);
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128 _logfile->flush();
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129 _t.start();
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130 }
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131 }
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132
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133 TraceTime::TraceTime(const char* title,
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134 elapsedTimer* accumulator,
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135 bool doit,
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136 bool verbose,
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137 outputStream* logfile) {
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138 _active = doit;
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139 _verbose = verbose;
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140 _print_cr = true;
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141 _logfile = (logfile != NULL) ? logfile : tty;
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142 if (_active) {
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143 if (_verbose) {
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144 if (PrintGCTimeStamps) {
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145 _logfile->stamp();
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146 _logfile->print(": ");
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147 }
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148 _logfile->print("[%s", title);
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149 _logfile->flush();
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150 }
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151 _accum = accumulator;
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152 _t.start();
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153 }
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154 }
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155
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156 TraceTime::~TraceTime() {
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157 if (_active) {
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158 _t.stop();
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159 if (_accum!=NULL) _accum->add(_t);
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160 if (_verbose) {
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161 if (_print_cr) {
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162 _logfile->print_cr(", %3.7f secs]", _t.seconds());
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163 } else {
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164 _logfile->print(", %3.7f secs]", _t.seconds());
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165 }
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166 _logfile->flush();
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167 }
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168 }
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169 }
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170
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171 TraceCPUTime::TraceCPUTime(bool doit,
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172 bool print_cr,
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173 outputStream *logfile) :
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174 _active(doit),
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175 _print_cr(print_cr),
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176 _starting_user_time(0.0),
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177 _starting_system_time(0.0),
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178 _starting_real_time(0.0),
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179 _logfile(logfile),
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180 _error(false) {
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181 if (_active) {
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182 if (logfile != NULL) {
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183 _logfile = logfile;
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184 } else {
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185 _logfile = tty;
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186 }
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187
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188 _error = !os::getTimesSecs(&_starting_real_time,
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189 &_starting_user_time,
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190 &_starting_system_time);
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191 }
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192 }
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193
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194 TraceCPUTime::~TraceCPUTime() {
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195 if (_active) {
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196 bool valid = false;
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197 if (!_error) {
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198 double real_secs; // walk clock time
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199 double system_secs; // system time
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200 double user_secs; // user time for all threads
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201
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202 double real_time, user_time, system_time;
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203 valid = os::getTimesSecs(&real_time, &user_time, &system_time);
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204 if (valid) {
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205
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206 user_secs = user_time - _starting_user_time;
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207 system_secs = system_time - _starting_system_time;
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208 real_secs = real_time - _starting_real_time;
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209
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210 _logfile->print(" [Times: user=%3.2f sys=%3.2f, real=%3.2f secs] ",
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211 user_secs, system_secs, real_secs);
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212
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213 } else {
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214 _logfile->print("[Invalid result in TraceCPUTime]");
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215 }
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216 } else {
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217 _logfile->print("[Error in TraceCPUTime]");
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218 }
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219 if (_print_cr) {
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220 _logfile->print_cr("");
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221 }
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222 }
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223 }