time.h

Overview

Related Modules:

TIME-SYS

Description:

Provides structures and functions related to the system time.

You can read and write the system time and set timers.

Since:

1.0

Version:

1.0

Summary

Data Structures

Data Structure Name Description
timeval Describes a period of time, accurate to microseconds.
timespec Describes a period of time, accurate to nanoseconds.
itimerval Describes a timer.
timezone Describes a time zone.

Macros

Macro Name and Value Description
ITIMER_REAL   0 Defines the timer that runs in real time.

Functions

Function Name Description
gettimeofday (struct timeval __restrict value, void restrict ovalue) int Obtains the system time and time zone.
getitimer (int w, struct itimerval old) int Obtains the value of an intermittent timer.
setitimer (int w, const struct itimerval restrict value, struct itimerval __restrict ovalue) int Sets the value for a timer.
settimeofday (const struct timeval tv, const struct timezone *tz) int Sets the system time and time zone.