go signal 源码
golang signal 代码
文件路径：/src/cmd/go/internal/base/signal.go
// 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 base
import (
"os"
"os/signal"
"sync"
)
// Interrupted is closed when the go command receives an interrupt signal.
var Interrupted = make(chan struct{})
// processSignals setups signal handler.
func processSignals() {
sig := make(chan os.Signal, 1)
signal.Notify(sig, signalsToIgnore...)
go func() {
<-sig
close(Interrupted)
}()
}
var onceProcessSignals sync.Once
// StartSigHandlers starts the signal handlers.
func StartSigHandlers() {
onceProcessSignals.Do(processSignals)
}
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