psutil 5.4.0

Process and system monitoring library
Documentation 
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use std::time::Duration;

use crate::process::ProcessCpuTimes;

pub trait ProcessCpuTimesExt {
	fn iowait(&self) -> Option<Duration>;
}

impl ProcessCpuTimesExt for ProcessCpuTimes {
	fn iowait(&self) -> Option<Duration> {
		self.iowait
	}
}