gem5/base/time.cc
Nathan Binkert 2484aeaee7 Minor changes to Time
base/time.cc:
base/time.hh:
    Don't set the current time in the constructor.  Use a flag and
    make the default to not set the time.
    Change reset() to set().  Dunno.  Just seems right.

--HG--
extra : convert_revision : 5a3b09ed30376d4863b45b2bae551ba1c3aff8e1
2004-03-24 04:35:48 -05:00

131 lines
2.9 KiB
C++

/*
* Copyright (c) 2003 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.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
#include <iostream>
#include <string>
#include "base/time.hh"
using namespace std;
struct _timeval
{
timeval tv;
};
double
convert(const timeval &tv)
{
return (double)tv.tv_sec + (double)tv.tv_usec / 1000000.0;
}
Time::Time(bool set_now)
{
time = new _timeval;
if (set_now)
set();
}
Time::Time(const timeval &val)
{
time = new _timeval;
set(val);
}
Time::Time(const Time &val)
{
time = new _timeval;
set(val.get());
}
Time::~Time()
{
delete time;
}
const timeval &
Time::get() const
{
return time->tv;
}
void
Time::set()
{
::gettimeofday(&time->tv, NULL);
}
void
Time::set(const timeval &tv)
{
memcpy(&time->tv, &tv, sizeof(timeval));
}
double
Time::operator()() const
{
return convert(get());
}
string
Time::date(string format) const
{
const timeval &tv = get();
time_t sec = tv.tv_sec;
char buf[256];
if (format.empty()) {
ctime_r(&sec, buf);
buf[24] = '\0';
return buf;
}
struct tm *tm = localtime(&sec);
strftime(buf, sizeof(buf), format.c_str(), tm);
return buf;
}
ostream &
operator<<(ostream &out, const Time &start)
{
out << start.date();
return out;
}
Time
operator-(const Time &l, const Time &r)
{
timeval tv;
timersub(&l.get(), &r.get(), &tv);
return tv;
}
const Time Time::start(true);