GETTIMEOFDAY(3P) POSIX Programmer's Manual GETTIMEOFDAY(3P)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.
NAMEgettimeofday — get the date and time
int gettimeofday(struct timeval *restrict tp, void *restrict tzp);
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
If tzp is not a null pointer, the behavior is unspecified.
The gettimeofday() function shall return 0 and no value shall be
reserved to indicate an error.
No errors are defined.
The following sections are informative.
Applications should use the clock_gettime() function instead of the
obsolescent gettimeofday() function.
The gettimeofday() function may be removed in a future version.
SEE ALSOclock_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 Electri‐
cal 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.ker‐
IEEE/The Open Group 2013 GETTIMEOFDAY(3P)