1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 */ 30 31#include "base/time.hh" 32 33#include <cstdlib> 34#include <ctime> 35#include <iostream> 36#include <sstream> 37
|
39#include "config/use_posix_clock.hh" 40#include "sim/core.hh" 41#include "sim/serialize.hh" 42 43using namespace std; 44 45void 46Time::_set(bool monotonic) 47{ 48#if USE_POSIX_CLOCK 49 ::clock_gettime(monotonic ? CLOCK_MONOTONIC : CLOCK_REALTIME, &_time); 50#else 51 timeval tv; 52 ::gettimeofday(&tv, NULL); 53 operator=(tv); 54#endif 55} 56 57void 58Time::setTick(Tick ticks) 59{ 60 uint64_t nsecs = ticks / SimClock::Int::ns; 61 set(nsecs / NSEC_PER_SEC, nsecs % NSEC_PER_SEC); 62} 63 64Tick 65Time::getTick() const 66{ 67 return (nsec() + sec() * NSEC_PER_SEC) * SimClock::Int::ns; 68} 69 70string 71Time::date(const string &format) const 72{ 73 time_t sec = this->sec(); 74 char buf[256]; 75 76 if (format.empty()) { 77#ifdef __SUNPRO_CC 78 ctime_r(&sec, buf, sizeof(buf)); 79#else 80 ctime_r(&sec, buf); 81#endif 82 buf[24] = '\0'; 83 return buf; 84 } 85 86 struct tm *tm = localtime(&sec); 87 strftime(buf, sizeof(buf), format.c_str(), tm); 88 return buf; 89} 90 91string 92Time::time() const 93{ 94 double time = double(*this); 95 double secs = fmod(time, 60.0); 96 double all_mins = floor(time / 60.0); 97 double mins = fmod(all_mins, 60.0); 98 double hours = floor(all_mins / 60.0); 99 100 stringstream str; 101 102 if (hours > 0.0) { 103 if (hours < 10.0) 104 str << '0'; 105 str << hours << ':'; 106 } 107 108 if (mins > 0.0) { 109 if (mins < 10.0) 110 str << '0'; 111 str << mins << ':'; 112 } 113 114 if (secs < 10.0 && !str.str().empty()) 115 str << '0'; 116 str << secs; 117 118 return str.str(); 119} 120 121void 122Time::serialize(const std::string &base, CheckpointOut &cp) const 123{ 124 paramOut(cp, base + ".sec", sec()); 125 paramOut(cp, base + ".nsec", nsec()); 126} 127 128void 129Time::unserialize(const std::string &base, CheckpointIn &cp) 130{ 131 time_t secs; 132 time_t nsecs; 133 paramIn(cp, base + ".sec", secs); 134 paramIn(cp, base + ".nsec", nsecs); 135 sec(secs); 136 nsec(nsecs); 137} 138 139void 140sleep(const Time &time) 141{ 142 timespec ts = time; 143 144#if USE_POSIX_CLOCK 145 clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL); 146#else 147 nanosleep(&ts, NULL); 148#endif 149} 150 151time_t 152mkutctime(struct tm *time) 153{ 154 // get the current timezone 155 char *tz = getenv("TZ"); 156 157 // copy the string as the pointer gets invalidated when updating 158 // the environment 159 if (tz) { 160 tz = strdup(tz); 161 if (!tz) { 162 fatal("Failed to reserve memory for UTC time conversion\n"); 163 } 164 } 165 166 // change to UTC and get the time 167 setenv("TZ", "", 1); 168 tzset(); 169 time_t ret = mktime(time); 170 171 // restore the timezone again 172 if (tz) { 173 setenv("TZ", tz, 1); 174 free(tz); 175 } else { 176 unsetenv("TZ"); 177 } 178 tzset(); 179 180 return ret; 181} 182
|