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61 lines
961 B
Go
61 lines
961 B
Go
// Copyright 2012 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
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import (
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"os"
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"syscall"
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)
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var sigtab = make(map[os.Signal]int)
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// In sig.s; jumps to runtime.
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func signal_disable(uint32)
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func signal_enable(uint32)
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func signal_ignore(uint32)
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func signal_recv() string
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func init() {
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signal_enable(0) // first call - initialize
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go loop()
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}
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func loop() {
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for {
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process(syscall.Note(signal_recv()))
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}
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}
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const numSig = 256
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func signum(sig os.Signal) int {
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switch sig := sig.(type) {
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case syscall.Note:
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n, ok := sigtab[sig]
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if !ok {
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n = len(sigtab) + 1
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if n > numSig {
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return -1
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}
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sigtab[sig] = n
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}
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return n
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default:
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return -1
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}
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}
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func enableSignal(sig int) {
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signal_enable(uint32(sig))
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}
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func disableSignal(sig int) {
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signal_disable(uint32(sig))
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}
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func ignoreSignal(sig int) {
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signal_ignore(uint32(sig))
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}
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