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// +build !plan9
package util
import (
"os"
"os/signal"
"sync"
"syscall"
)
var signalChan chan os.Signal
var hooks = make([]func(), 0)
var hookLock sync.Mutex
func init() {
signalChan = make(chan os.Signal, 1)
signal.Ignore(syscall.SIGHUP)
signal.Notify(signalChan,
os.Interrupt,
os.Kill,
syscall.SIGALRM,
// syscall.SIGHUP,
syscall.SIGINT,
syscall.SIGTERM,
// syscall.SIGQUIT,
)
go func() {
for _ = range signalChan {
for _, hook := range hooks {
hook()
}
os.Exit(0)
}
}()
}
func OnInterrupt(fn func()) {
// prevent reentry
hookLock.Lock()
defer hookLock.Unlock()
// deal with control+c,etc
// controlling terminal close, daemon not exit
hooks = append(hooks, fn)
}
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