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// SPDX-License-Identifier: BSD-3-Clause
//go:build darwin || freebsd || openbsd || netbsd
package host
import (
"context"
"sync/atomic"
"golang.org/x/sys/unix"
)
// cachedBootTime must be accessed via atomic.Load/StoreUint64
var cachedBootTime uint64
func BootTimeWithContext(ctx context.Context) (uint64, error) {
if enableBootTimeCache {
t := atomic.LoadUint64(&cachedBootTime)
if t != 0 {
return t, nil
}
}
tv, err := unix.SysctlTimeval("kern.boottime")
if err != nil {
return 0, err
}
if enableBootTimeCache {
atomic.StoreUint64(&cachedBootTime, uint64(tv.Sec))
}
return uint64(tv.Sec), nil
}
func UptimeWithContext(ctx context.Context) (uint64, error) {
boot, err := BootTimeWithContext(ctx)
if err != nil {
return 0, err
}
return timeSince(boot), nil
}
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