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#[derive(Default, Debug, Clone)]
pub struct CpuData {
pub cpu_prefix: String,
pub cpu_count: Option<usize>,
pub cpu_usage: f64,
}
pub type CpuHarvest = Vec<CpuData>;
pub type PastCpuWork = f64;
pub type PastCpuTotal = f64;
#[cfg(not(target_os = "linux"))]
use sysinfo::{ProcessorExt, System, SystemExt};
#[cfg(not(target_os = "linux"))]
pub fn get_cpu_data_list(sys: &System, show_average_cpu: bool) -> CpuHarvest {
let cpu_data = sys.get_processors();
let avg_cpu_usage = sys.get_global_processor_info().get_cpu_usage();
let mut cpu_vec = vec![];
if show_average_cpu {
cpu_vec.push(CpuData {
cpu_prefix: "AVG".to_string(),
cpu_count: None,
cpu_usage: avg_cpu_usage as f64,
});
}
for (itx, cpu) in cpu_data.iter().enumerate() {
cpu_vec.push(CpuData {
cpu_prefix: "CPU".to_string(),
cpu_count: Some(itx),
cpu_usage: f64::from(cpu.get_cpu_usage()),
});
}
cpu_vec
}
#[cfg(target_os = "linux")]
pub async fn get_cpu_data_list(
show_average_cpu: bool, previous_cpu_times: &mut Vec<(PastCpuWork, PastCpuTotal)>,
previous_average_cpu_time: &mut Option<(PastCpuWork, PastCpuTotal)>,
) -> crate::error::Result<CpuHarvest> {
use futures::StreamExt;
use heim::cpu::os::linux::CpuTimeExt;
use std::collections::VecDeque;
fn convert_cpu_times(cpu_time: &heim::cpu::CpuTime) -> (f64, f64) {
let working_time: f64 = (cpu_time.user()
+ cpu_time.nice()
+ cpu_time.system()
+ cpu_time.irq()
+ cpu_time.soft_irq()
+ cpu_time.steal())
.get::<heim::units::time::second>();
(
working_time,
working_time
+ (cpu_time.idle() + cpu_time.io_wait()).get::<heim::units::time::second>(),
)
}
fn calculate_cpu_usage_percentage(
(previous_working_time, previous_total_time): (f64, f64),
(current_working_time, current_total_time): (f64, f64),
) -> f64 {
((if current_working_time > previous_working_time {
current_working_time - previous_working_time
} else {
0.0
}) * 100.0)
/ (if current_total_time > previous_total_time {
current_total_time - previous_total_time
} else {
1.0
})
}
// Get all CPU times...
let cpu_times = heim::cpu::times().await?;
futures::pin_mut!(cpu_times);
let mut cpu_deque: VecDeque<CpuData> = if previous_cpu_times.is_empty() {
// Must initialize ourselves. Use a very quick timeout to calculate an initial.
futures_timer::Delay::new(std::time::Duration::from_millis(100)).await;
let second_cpu_times = heim::cpu::times().await?;
futures::pin_mut!(second_cpu_times);
let mut new_cpu_times: Vec<(PastCpuWork, PastCpuTotal)> = Vec::new();
let mut cpu_deque: VecDeque<CpuData> = VecDeque::new();
let mut collected_zip = cpu_times.zip(second_cpu_times).enumerate(); // Gotta move it here, can't on while line.
while let Some((itx, (past, present))) = collected_zip.next().await {
if let (Ok(past), Ok(present)) = (past, present) {
let present_times = convert_cpu_times(&present);
new_cpu_times.push(present_times);
cpu_deque.push_back(CpuData {
cpu_prefix: "CPU".to_string(),
cpu_count: Some(itx),
cpu_usage: calculate_cpu_usage_percentage(
convert_cpu_times(&past),
present_times,
),
});
} else {
new_cpu_times.push((0.0, 0.0));
cpu_deque.push_back(CpuData {
cpu_prefix: "CPU".to_string(),
cpu_count: Some(itx),
cpu_usage: 0.0,
});
}
}
*previous_cpu_times = new_cpu_times;
cpu_deque
} else {
let (new_cpu_times, cpu_deque): (Vec<(PastCpuWork, PastCpuTotal)>, VecDeque<CpuData>) =
cpu_times
.collect::<Vec<_>>()
.await
.iter()
.zip(&*previous_cpu_times)
.enumerate()
.map(|(itx, (current_cpu, (past_cpu_work, past_cpu_total)))| {
if let Ok(cpu_time) = current_cpu {
let present_times = convert_cpu_times(&cpu_time);
(
present_times,
CpuData {
cpu_prefix: "CPU".to_string(),
cpu_count: Some(itx),
cpu_usage: calculate_cpu_usage_percentage(
(*past_cpu_work, *past_cpu_total),
present_times,
),
},
)
} else {
(
(*past_cpu_work, *past_cpu_total),
CpuData {
cpu_prefix: "CPU".to_string(),
cpu_count: Some(itx),
cpu_usage: 0.0,
},
)
}
})
.unzip();
*previous_cpu_times = new_cpu_times;
cpu_deque
};
// Get average CPU if needed... and slap it at the top
if show_average_cpu {
let cpu_time = heim::cpu::time().await?;
let (cpu_usage, new_average_cpu_time) = if let Some((past_cpu_work, past_cpu_total)) =
previous_average_cpu_time
{
let present_times = convert_cpu_times(&cpu_time);
(
calculate_cpu_usage_percentage((*past_cpu_work, *past_cpu_total), present_times),
present_times,
)
} else {
// Again, we need to do a quick timeout...
futures_timer::Delay::new(std::time::Duration::from_millis(100)).await;
let second_cpu_time = heim::cpu::time().await?;
let present_times = convert_cpu_times(&second_cpu_time);
(
calculate_cpu_usage_percentage(convert_cpu_times(&cpu_time), present_times),
present_times,
)
};
*previous_average_cpu_time = Some(new_average_cpu_time);
cpu_deque.push_front(CpuData {
cpu_prefix: "AVG".to_string(),
cpu_count: None,
cpu_usage,
})
}
// Ok(Vec::from(cpu_deque.drain(0..3).collect::<Vec<_>>())) // For artificially limiting the CPU results
Ok(Vec::from(cpu_deque))
}
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