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37 lines
677 B
37 lines
677 B
// +build darwin freebsd openbsd
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package host
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import (
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"context"
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"sync/atomic"
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"golang.org/x/sys/unix"
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)
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// cachedBootTime must be accessed via atomic.Load/StoreUint64
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var cachedBootTime uint64
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func BootTimeWithContext(ctx context.Context) (uint64, error) {
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t := atomic.LoadUint64(&cachedBootTime)
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if t != 0 {
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return t, nil
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}
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tv, err := unix.SysctlTimeval("kern.boottime")
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if err != nil {
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return 0, err
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}
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atomic.StoreUint64(&cachedBootTime, uint64(tv.Sec))
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return uint64(tv.Sec), nil
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}
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func UptimeWithContext(ctx context.Context) (uint64, error) {
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boot, err := BootTimeWithContext(ctx)
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if err != nil {
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return 0, err
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}
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return timeSince(boot), nil
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}
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