MNTimeval.h

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/* Copyright (C) 2000 KOM/Darmstadt University of Technology
 *
 * You are allowed to use all other parts of the code under the following terms:
 *
 * For non-commercial use, code may be used in unmodified form provided
 * that this copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * This software is provided "as is" and without any express or implied
 * warranties, including, without limitation, the implied warranty of
 * fitness for a particular purpose.
 *
 * The code may be subjected to the GNU General Public License, Version 2,
 * and re-distributed under the terms of this license.
 * As a special exception, permission is granted to link this code
 * with the Qt library and distribute executables, as long as you
 * follow the requirements of the GNU GPL in regard to all of the
 * software in the executable aside from Qt.
 *
 * Commercial use other than under the terms of the GNU General Public
 * License is allowed only after express negotiation of conditions
 * with the authors.
 */
#ifndef MN_TIMEVAL_H
#define MN_TIMEVAL_H

#include <config.h>

#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>

#include "mnstream.h"

typedef struct timeval C_timeval;

extern bool      operator< (const C_timeval& t1, const C_timeval& t2);
extern bool      operator> (const C_timeval& t1, const C_timeval& t2);
extern bool      operator>=(const C_timeval& t1, const C_timeval& t2);
extern bool      operator<=(const C_timeval& t1, const C_timeval& t2);
extern C_timeval operator-(const C_timeval& t1, const C_timeval& t2);
extern C_timeval operator+(const C_timeval& t1, const C_timeval& t2);
extern C_timeval operator+(const C_timeval& t1, unsigned int usecs);
extern C_timeval operator-(const C_timeval& t1, unsigned int usecs);
extern C_timeval operator*(int mul, const C_timeval& t);
extern C_timeval operator*(const C_timeval& t, int mul);

class Timeval
    : public C_timeval
{
public:
    static const size_t MAX_USEC = 1000000;

    enum Now
    {
        NOW
    };

public:
    Timeval( );
    Timeval( const Timeval& tv );
    Timeval( const C_timeval& tv );
    Timeval( int     microseconds );
    Timeval( size_t  microseconds );
    Timeval( int64_t microseconds );
    Timeval( double  seconds );
    Timeval( Now );

    Timeval& operator=( const Timeval& tv );
    Timeval& operator=( int     microseconds );
    Timeval& operator=( size_t  microseconds );
    Timeval& operator=( int64_t microseconds );
    Timeval& operator=( double  seconds );
    Timeval& operator=( Now );

    Timeval& operator+=( unsigned int tv );
    Timeval& operator+=( Now );
    Timeval& operator-=( unsigned int tv );
    Timeval& operator-=( const Timeval& tv );

    size_t  asUsec() const;
    int64_t asUsec64() const;
    double  asSec() const;

    void asNPT( ostream& ostr ) const;
};

extern Timeval operator*(int mul, const Timeval& t);
extern Timeval operator*(const Timeval& t, int mul);

#endif /* MN_TIMEVAL_H */

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