TCTimestamp.cpp

/*
    Copyright (C) 2009-2011  EPFL (Ecole Polytechnique Fédérale de Lausanne)
    Michele Tavella <michele.tavella@epfl.ch>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef TCTIMESTAMP_CPP 
#define TCTIMESTAMP_CPP 

#include "TCTimestamp.hpp" 
#include <time.h> 
#include <stdio.h> 
#include <string.h> 

TCTimestamp::TCTimestamp(void) {
        this->Unset();
}

TCTimestamp::~TCTimestamp(void) {
}

void TCTimestamp::Unset(void) {
        timerclear(&this->timestamp);
}

bool TCTimestamp::IsSet(void) {
        return(timerisset(&this->timestamp) != 0);
}

void TCTimestamp::Tic(void) {
        gettimeofday(&this->timestamp, NULL);
}

double TCTimestamp::Toc(TCTimeval* timestamp) {
        TCTimeval toc;
        gettimeofday(&toc, NULL);

        return double((toc.tv_sec  - timestamp->tv_sec)*1000000 + 
                        toc.tv_usec - timestamp->tv_usec)/1000;
}
                
double TCTimestamp::Toc(void) {
        return this->Toc(&this->timestamp);
}

void TCTimestamp::Get(std::string* timestamp) const{
        char cache[256];
        sprintf(cache, "%ld,%ld", 
                        this->timestamp.tv_sec, 
                        this->timestamp.tv_usec);

        timestamp->clear();
        timestamp->assign(cache);
}

bool TCTimestamp::Set(const std::string& timestamp) {
        int status = sscanf(timestamp.c_str(), "%ld,%ld", 
                        &this->timestamp.tv_sec, 
                        &this->timestamp.tv_usec);
        return(status == 2);
}

void TCTimestamp::Set(const TCTimeval* timestamp) {
        this->timestamp.tv_sec = timestamp->tv_sec;
        this->timestamp.tv_usec = timestamp->tv_usec;
}

#endif