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package devices
// TODO: https://github.com/elastic/go-sysinfo
import (
"log"
"time"
)
var cpuFuncs []func(map[string]int, time.Duration, bool) map[string]error
// RegisterCPU adds a new CPU device to the CPU widget. labels returns the
// names of the devices; they should be as short as possible, and the indexes
// of the returned slice should align with the values returned by the percents
// function. The percents function should return the percent CPU usage of the
// device(s), sliced over the time duration supplied. If the bool argument to
// percents is true, it is expected that the return slice
//
// labels may be called once and the value cached. This means the number of
// cores should not change dynamically.
func RegisterCPU(f func(map[string]int, time.Duration, bool) map[string]error) {
cpuFuncs = append(cpuFuncs, f)
}
// CPUPercent calculates the percentage of cpu used either per CPU or combined.
// Returns one value per cpu, or a single value if percpu is set to false.
func UpdateCPU(cpus map[string]int, interval time.Duration, logical bool) {
for _, f := range cpuFuncs {
errs := f(cpus, interval, logical)
if errs != nil {
for k, e := range errs {
log.Printf("%s: %s", k, e)
}
}
}
}
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