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bintime (9)
  • >> bintime (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    NAME

    
    
    bintime
    
     
    getbintime
    
     
    microtime
    
     
    getmicrotime
    
     
    nanotime
    
     
    getnanotime
    
     - get the current time
    
     
    

    SYNOPSIS

       #include <sys/time.h>
    void bintime (struct bintime *bt);
    void getbintime (struct bintime *bt);
    void microtime (struct timeval *tv);
    void getmicrotime (struct timeval *tv);
    void nanotime (struct timespec *ts);
    void getnanotime (struct timespec *tsp);
     

    DESCRIPTION

    The bintime ();
    and getbintime ();
    functions store the system time as a Vt struct bintime at the addresses specified by Fa bt . The microtime ();
    and getmicrotime ();
    functions perform the same utility, but record the time as a Vt struct timeval instead. Similarly the nanotime ();
    and getnanotime ();
    functions store the time as a Vt struct timespec .

    The bintime (,);
    microtime (,);
    and nanotime ();
    functions always query the timecounter to return the current time as precisely as possible. Whereas getbintime (,);
    getmicrotime (,);
    and getnanotime ();
    functions are abstractions which return a less precise, but faster to obtain, time.

    The intent of the getbintime (,);
    getmicrotime (,);
    and getnanotime ();
    functions is to enforce the user's preference for timer accuracy versus execution time.  

    SEE ALSO

    binuptime(9), getbinuptime(9), getmicrouptime(9), getnanouptime(9), microuptime(9), nanouptime(9), tvtohz(9)  

    HISTORY

    The bintime functions first appeared in Fx 5.0 . The microtime and nanotime functions first appeared in Fx 3.0 but have existed in other incarnations since BSD 4.4  

    AUTHORS

    This manual page was written by An Kelly Yancey Aq kbyanc@posi.net .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    SEE ALSO
    HISTORY
    AUTHORS


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