| // Copyright 2012 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package main |
| |
| import ( |
| "os" |
| "os/signal" |
| "sync" |
| ) |
| |
| // interrupted is closed, if go process is interrupted. |
| var interrupted = make(chan struct{}) |
| |
| // processSignals setups signal handler. |
| func processSignals() { |
| sig := make(chan os.Signal) |
| signal.Notify(sig, signalsToIgnore...) |
| go func() { |
| <-sig |
| close(interrupted) |
| }() |
| } |
| |
| var onceProcessSignals sync.Once |
| |
| // startSigHandlers start signal handlers. |
| func startSigHandlers() { |
| onceProcessSignals.Do(processSignals) |
| } |