CODEWITHSUNDEEP
linuxtimer
user877329
user877329

Reputation: 6220

Accurate interval timer inside rendering loop linux

What is the best way to do the following in Linux

while(continue)
    {
    render(); //this function will take a large fraction of the framerate
    wait();   //Wait until the full frame period has expired.
    }

On windows, waitable timers seems to work pretty well (within 1 ms). One way of proceeding is to use a separate thread that just sleeps and triggers a sychronization mechanism. However I do not know how much overhead there are in this.

Note: Accuracy is more important than high frequency: A timer with frequency 1.000 kHz is preffered over a timer with 1 MHz.

Upvotes: 0

Views: 412

Answers (1)

Jonas Berlin
Jonas Berlin

Reputation: 3482

Assuming you're looking for an answer in the C language:

I don't remember the precision, but I recall I used to use the setitimer() function when I needed good precision.

Here's an example of how to use it: http://docs.oracle.com/cd/E23824_01/html/821-1602/chap7rt-89.html

Upvotes: 1

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