gettimeofday3p
Get the date and time
Usage
#include <sys/time.h>
int gettimeofday(struct timeval *restrict tp, void *restrict tzp);
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.
Overview
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.