49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package signal implements operating system-independent signal handling.
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package signal
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import (
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"runtime"
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"strconv"
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)
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// A Signal can represent any operating system signal.
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type Signal interface {
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String() string
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}
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type UnixSignal int32
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func (sig UnixSignal) String() string {
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s := runtime.Signame(int32(sig))
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if len(s) > 0 {
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return s
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}
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return "Signal " + strconv.Itoa(int(sig))
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}
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// Incoming is the global signal channel.
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// All signals received by the program will be delivered to this channel.
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var Incoming <-chan Signal
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func process(ch chan<- Signal) {
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for {
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var mask uint32 = runtime.Sigrecv()
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for sig := uint(0); sig < 32; sig++ {
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if mask&(1<<sig) != 0 {
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ch <- UnixSignal(sig)
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}
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}
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}
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}
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func init() {
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runtime.Siginit()
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ch := make(chan Signal) // Done here so Incoming can have type <-chan Signal
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Incoming = ch
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go process(ch)
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}
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