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You are here: manpages





GETTIMEOFDAY

Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index Return to Main Contents
 

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>  

COPYRIGHT

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 .


 

Index

PROLOG
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
EXAMPLES
APPLICATION USAGE
RATIONALE
FUTURE DIRECTIONS
SEE ALSO
COPYRIGHT


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