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// Take a look at the license at the top of the repository in the LICENSE file.
use super::utils::get_sys_value_by_name;
use crate::ComponentExt;
#[doc = include_str!("../../md_doc/component.md")]
pub struct Component {
id: Vec<u8>,
label: String,
temperature: f32,
max: f32,
}
impl ComponentExt for Component {
fn temperature(&self) -> f32 {
self.temperature
}
fn max(&self) -> f32 {
self.max
}
fn critical(&self) -> Option<f32> {
None
}
fn label(&self) -> &str {
&self.label
}
fn refresh(&mut self) {
unsafe {
if let Some(temperature) = refresh_component(&self.id) {
self.temperature = temperature;
if self.temperature > self.max {
self.max = self.temperature;
}
}
}
}
}
unsafe fn refresh_component(id: &[u8]) -> Option<f32> {
let mut temperature: libc::c_int = 0;
if !get_sys_value_by_name(id, &mut temperature) {
None
} else {
// convert from Kelvin (x 10 -> 273.2 x 10) to Celsius
Some((temperature - 2732) as f32 / 10.)
}
}
pub unsafe fn get_components(nb_cpus: usize) -> Vec<Component> {
// For now, we only have temperature for CPUs...
let mut components = Vec::with_capacity(nb_cpus);
for core in 0..nb_cpus {
let id = format!("dev.cpu.{}.temperature\0", core)
.as_bytes()
.to_vec();
if let Some(temperature) = refresh_component(&id) {
components.push(Component {
id,
label: format!("CPU {}", core + 1),
temperature,
max: temperature,
});
}
}
components
}
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