Function winsafe::QueryPerformanceCounter [−][src]
pub fn QueryPerformanceCounter() -> WinResult<i64>
Expand description
QueryPerformanceCounter
function.
Examples
ⓘ
use winsafe::{QueryPerformanceCounter, QueryPerformanceFrequency};
let freq = QueryPerformanceFrequency()?;
let start = QueryPerformanceCounter()?;
// perform some operation...
let duration_ms =
((QueryPerformanceCounter()? - t0) as f64 / freq as f64) * 1000.0;
println!("Operation lasted {:.2} ms", duration_ms);