45 lines
997 B
Go
45 lines
997 B
Go
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package devices
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import (
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"time"
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)
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var deviceCounts []func(bool) (int, error)
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var devicePercents []func(time.Duration, bool) ([]float64, error)
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var numDevices int
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// Counts returns the number of CPUs registered.
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//
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// logical tells Counts to count the logical cores; this may be ignored for
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// some devices.
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func Counts(logical bool) (int, error) {
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var rv int
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var re error
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for _, d := range deviceCounts {
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r, err := d(logical)
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if err != nil {
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return rv, re
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}
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rv += r
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}
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return rv, re
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}
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// Percent calculates the percentage of cpu used either per CPU or combined.
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// Returns one value per cpu, or a single value if percpu is set to false.
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func Percent(interval time.Duration, combined bool) ([]float64, error) {
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var rvs []float64
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rvs = make([]float64, 0, numDevices)
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for _, f := range devicePercents {
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vs, err := f(interval, combined)
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if err != nil {
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return rvs, err
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}
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for _, v := range vs {
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rvs = append(rvs, v)
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}
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}
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numDevices = len(rvs)
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return rvs, nil
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}
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