Boot time

This library reimplements std::time::Instant to use suspend-aware monotonic time if target system supports it. Otherwise is uses monotonic time or reexports std::time::Instant.

lib.rs:

Temporal quantification that takes into account the time a system spent suspended.

Note: Some systems like FreeBSD, DragonFlyBSD, NetBSD, AIX, Fuchsia, Emscripten don't support CLOCK_BOOTIME.

For compatibility CLOCK_MONOTONIC is used as a fallback.

Windows QueryPerformanceCounter includes suspended time. So for Windows and unsupported platforms std::time::Instant is just reexported.

Examples

Using Instant to calculate how long a function took to run:

use boot_time::Instant;

let now = Instant::now();

// Calling a slow function, it may take a while
slow_function();

let elapsed_time = now.elapsed();
println!("Running slow_function() took {} seconds.", elapsed_time.as_secs());