Crate hemera 

Hemera

A lightweight attribute macro for measuring function execution time with divine precision.

Usage

use hemera::measure_time;

#[measure_time]
fn calculate_fibonacci(n: u32) -> u32 {
    if n <= 1 {
        n
    } else {
        calculate_fibonacci(n - 1) + calculate_fibonacci(n - 2)
    }
}

#[measure_time(name = "CustomTimer", level = "debug")]
fn slow_function() {
    std::thread::sleep(std::time::Duration::from_millis(100));
}

#[measure_time(threshold = "50ms")]
fn maybe_slow(n: u32) {
    // Only logs if execution takes more than 50ms
    std::thread::sleep(std::time::Duration::from_millis(n as u64));
}

Async Support

use hemera::measure_time;

#[measure_time]
async fn fetch_data() -> String {
    // Async function timing
    "data".to_string()
}

Tracing Integration

Enable the tracing feature for integration with the tracing ecosystem:

[dependencies]
hemera = { version = "0.1", features = ["tracing"] }

Attribute Macros

measure_time

Attribute macro for measuring function execution time