cxxitimer

A C++ Library to handle linux interval timer

Interval Timer Types

Each timer type can exist only once per application.

• ITimer_Real counts down in real time.
• ITimer_Virtual counts down against the user-mode CPU time consumed by the process.
• ITimer_Prof counts down against the total CPU time consumed by the process.

Usage

In the following replace ITimer_XXX with the desired timer type.

Create Interval Timer

const timeval interval = {1, 0};
cxxitimer::ITimer_XXX itimer(interval);

const double interval = 1.0;
cxxitimer::ITimer_XXX itimer(interval);

const timeval initial_interval = {2, 0};
const timeval interval = {1, 0};
cxxitimer::ITimer_XXX itimer(interval, initial_interval);

const double initial_interval = 2.0;
const double interval = 1.0;
cxxitimer::ITimer_XXX itimer(interval, initial_interval);

Start/Stop Interval Timer

itimer.start();

itimer.stop();

Change interval

Note: Timer must be stopped.

const timeval interval = {1, 500'000};
itimer.set_interval(interval);

const double interval = 2.5;
itimer.set_interval(interval);

Manipulate Timer Speed

Note: can be applied it the timer is running

// slow down timer
itmer.set_speed_factor(0.75);

// speed up timer
itmer.set_speed_factor(1.25);

// reset timer to original interval
itimer.set_speed_to_normal();