bionic (3) gettimeofday.3posix.gz

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PROLOG
       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.


NAME
       gettimeofday — get the date and time


SYNOPSIS
       #include <sys/time.h>

       int gettimeofday(struct timeval *restrict tp, void *restrict tzp);


DESCRIPTION
       The  gettimeofday()  function  shall obtain the current time, expressed as seconds and microseconds since
       the Epoch, and store it in the timeval structure pointed to by tp.  The resolution of the system clock is
       unspecified.

       If tzp is not a null pointer, the behavior is unspecified.


RETURN VALUE
       The gettimeofday() function shall return 0 and no value shall be reserved to indicate an error.


ERRORS
       No errors are defined.

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       Applications should use the clock_gettime() function instead of the obsolescent gettimeofday() function.


RATIONALE
       None.


FUTURE DIRECTIONS
       The gettimeofday() function may be removed in a future version.


SEE ALSO
       clock_getres(), ctime()

       The Base Definitions volume of POSIX.1‐2008, <sys_time.h>


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications  Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc
       and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In  the  event
       of  any  discrepancy between this version and the original IEEE and The Open Group Standard, the original
       IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at
       http://www.unix.org/online.html .

       Any  typographical  or formatting errors that appear in this page are most likely to have been introduced
       during  the  conversion  of  the  source  files  to  man  page  format.  To  report  such   errors,   see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .