29 lines
594 B
Go
29 lines
594 B
Go
// +build linux,!cgo
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package loadavg
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import (
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"fmt"
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"io"
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"os"
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)
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func get() (*Stats, error) {
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// Reference: man 5 proc, loadavg_proc_show in Linux source code
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file, err := os.Open("/proc/loadavg")
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if err != nil {
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return nil, err
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}
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defer file.Close()
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return collectLoadavgStats(file)
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}
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func collectLoadavgStats(out io.Reader) (*Stats, error) {
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var loadavg Stats
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ret, err := fmt.Fscanf(out, "%f %f %f", &loadavg.Loadavg1, &loadavg.Loadavg5, &loadavg.Loadavg15)
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if err != nil || ret != 3 {
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return nil, fmt.Errorf("unexpected format of /proc/loadavg")
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}
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return &loadavg, nil
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}
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