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use std::fmt::{self, Formatter, Debug};
#[derive(Clone, Copy)]
pub struct CpuValues {
user: u64,
nice: u64,
system: u64,
idle: u64,
iowait: u64,
irq: u64,
softirq: u64,
steal: u64,
guest: u64,
guest_nice: u64
}
impl CpuValues {
pub fn new() -> CpuValues {
CpuValues {
user: 0,
nice: 0,
system: 0,
idle: 0,
iowait: 0,
irq: 0,
softirq: 0,
steal: 0,
guest: 0,
guest_nice: 0
}
}
pub fn new_with_values(user: u64, nice: u64, system: u64, idle: u64, iowait: u64,
irq: u64, softirq: u64, steal: u64, guest: u64, guest_nice: u64) -> CpuValues {
CpuValues {
user: user,
nice: nice,
system: system,
idle: idle,
iowait: iowait,
irq: irq,
softirq: softirq,
steal: steal,
guest: guest,
guest_nice: guest_nice
}
}
pub fn is_zero(&self) -> bool {
self.user == 0 && self.nice == 0 && self.system == 0 && self.idle == 0 &&
self.iowait == 0 && self.irq == 0 && self.softirq == 0 && self.steal == 0 &&
self.guest == 0 && self.guest_nice == 0
}
pub fn set(&mut self, user: u64, nice: u64, system: u64, idle: u64, iowait: u64,
irq: u64, softirq: u64, steal: u64, guest: u64, guest_nice: u64) {
self.user = user;
self.nice = nice;
self.system = system;
self.idle = idle;
self.iowait = iowait;
self.irq = irq;
self.softirq = softirq;
self.steal = steal;
self.guest = guest;
self.guest_nice = guest_nice;
}
pub fn work_time(&self) -> u64 {
self.user + self.nice + self.system
}
pub fn total_time(&self) -> u64 {
self.work_time() + self.idle + self.iowait + self.irq + self.softirq
+ self.steal + self.guest + self.guest_nice
}
}
pub struct Processor {
old_values: CpuValues,
new_values: CpuValues,
name: String,
cpu_usage: f32,
total_time: u64,
old_total_time: u64
}
impl Processor {
fn new() -> Processor {
Processor {
name: String::new(),
old_values: CpuValues::new(),
new_values: CpuValues::new(),
cpu_usage: 0f32,
total_time: 0,
old_total_time: 0
}
}
fn new_with_values(name: &str, user: u64, nice: u64, system: u64, idle: u64, iowait: u64,
irq: u64, softirq: u64, steal: u64, guest: u64, guest_nice: u64) -> Processor {
Processor {
name: name.to_owned(),
old_values: CpuValues::new(),
new_values: CpuValues::new_with_values(user, nice, system, idle, iowait, irq,
softirq, steal, guest, guest_nice),
cpu_usage: 0f32,
total_time: 0,
old_total_time: 0,
}
}
fn set(&mut self, user: u64, nice: u64, system: u64, idle: u64, iowait: u64,
irq: u64, softirq: u64, steal: u64, guest: u64, guest_nice: u64) {
self.old_values = self.new_values;
self.new_values.set(user, nice, system, idle, iowait, irq, softirq, steal,
guest, guest_nice);
self.cpu_usage = (self.new_values.work_time() - self.old_values.work_time()) as f32 /
(self.new_values.total_time() - self.old_values.total_time()) as f32;
self.old_total_time = self.old_values.total_time();
self.total_time = self.new_values.total_time();
}
pub fn get_cpu_usage(&self) -> f32 {
self.cpu_usage
}
pub fn get_name<'a>(&'a self) -> &'a str {
&self.name
}
}
impl Debug for Processor {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{}: {}%", self.name, self.cpu_usage)
}
}
pub fn new_processor(name: &str, user: u64, nice: u64, system: u64, idle: u64, iowait: u64,
irq: u64, softirq: u64, steal: u64, guest: u64, guest_nice: u64) -> Processor {
Processor::new_with_values(name, user, nice, system, idle, iowait, irq, softirq, steal,
guest, guest_nice)
}
pub fn set_processor(p: &mut Processor, user: u64, nice: u64, system: u64, idle: u64, iowait: u64,
irq: u64, softirq: u64, steal: u64, guest: u64, guest_nice: u64) {
p.set(user, nice, system, idle, iowait, irq, softirq, steal,
guest, guest_nice)
}
pub fn get_raw_times(p: &Processor) -> (u64, u64) {
(p.new_values.total_time(), p.old_values.total_time())
}