minio/signals.go
2016-06-16 08:50:38 +05:30

49 lines
1.2 KiB
Go

/*
* Minio Client, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"os"
"os/signal"
)
// signalTrap traps the registered signals and notifies the caller.
func signalTrap(sig ...os.Signal) <-chan bool {
// channel to notify the caller.
trapCh := make(chan bool, 1)
go func(chan<- bool) {
// channel to receive signals.
sigCh := make(chan os.Signal, 1)
defer close(sigCh)
// `signal.Notify` registers the given channel to
// receive notifications of the specified signals.
signal.Notify(sigCh, sig...)
// Wait for the signal.
<-sigCh
// Once signal has been received stop signal Notify handler.
signal.Stop(sigCh)
// Notify the caller.
trapCh <- true
}(trapCh)
return trapCh
}