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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
*/
#include <cstdlib>
#include <ctime>
#include <iostream>
#include <sstream>
#include "base/time.hh"
#include "config/use_posix_clock.hh"
#include "sim/core.hh"
#include "sim/serialize.hh"
using namespace std;
void
Time::_set(bool monotonic)
{
#if USE_POSIX_CLOCK
::clock_gettime(monotonic ? CLOCK_MONOTONIC : CLOCK_REALTIME, &_time);
#else
timeval tv;
::gettimeofday(&tv, NULL);
operator=(tv);
#endif
}
void
Time::setTick(Tick ticks)
{
uint64_t nsecs = ticks / SimClock::Int::ns;
set(nsecs / NSEC_PER_SEC, nsecs % NSEC_PER_SEC);
}
Tick
Time::getTick() const
{
return (nsec() + sec() * NSEC_PER_SEC) * SimClock::Int::ns;
}
string
Time::date(const string &format) const
{
time_t sec = this->sec();
char buf[256];
if (format.empty()) {
#ifdef __SUNPRO_CC
ctime_r(&sec, buf, sizeof(buf));
#else
ctime_r(&sec, buf);
#endif
buf[24] = '\0';
return buf;
}
struct tm *tm = localtime(&sec);
strftime(buf, sizeof(buf), format.c_str(), tm);
return buf;
}
string
Time::time() const
{
double time = double(*this);
double secs = fmod(time, 60.0);
double all_mins = floor(time / 60.0);
double mins = fmod(all_mins, 60.0);
double hours = floor(all_mins / 60.0);
stringstream str;
if (hours > 0.0) {
if (hours < 10.0)
str << '0';
str << hours << ':';
}
if (mins > 0.0) {
if (mins < 10.0)
str << '0';
str << mins << ':';
}
if (secs < 10.0 && !str.str().empty())
str << '0';
str << secs;
return str.str();
}
void
Time::serialize(const std::string &base, ostream &os)
{
paramOut(os, base + ".sec", sec());
paramOut(os, base + ".nsec", nsec());
}
void
Time::unserialize(const std::string &base, Checkpoint *cp,
const string §ion)
{
time_t secs;
time_t nsecs;
paramIn(cp, section, base + ".sec", secs);
paramIn(cp, section, base + ".nsec", nsecs);
sec(secs);
nsec(nsecs);
}
void
sleep(const Time &time)
{
timespec ts = time;
#if USE_POSIX_CLOCK
clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);
#else
nanosleep(&ts, NULL);
#endif
}
time_t
mkutctime(struct tm *time)
{
// get the current timezone
char *tz = getenv("TZ");
// copy the string as the pointer gets invalidated when updating
// the environment
if (tz) {
tz = strdup(tz);
if (!tz) {
fatal("Failed to reserve memory for UTC time conversion\n");
}
}
// change to UTC and get the time
setenv("TZ", "", 1);
tzset();
time_t ret = mktime(time);
// restore the timezone again
if (tz) {
setenv("TZ", tz, 1);
free(tz);
} else {
unsetenv("TZ");
}
tzset();
return ret;
}
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