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// 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.
// +build darwin dragonfly freebsd linux netbsd openbsd windows
package signal
import (
"os"
"syscall"
)
// In assembly.
func signal_disable(uint32)
func signal_enable(uint32)
func signal_recv() uint32
func loop() {
for {
process(syscall.Signal(signal_recv()))
}
}
func init() {
signal_enable(0) // first call - initialize
go loop()
}
const (
numSig = 65 // max across all systems
)
func signum(sig os.Signal) int {
switch sig := sig.(type) {
case syscall.Signal:
i := int(sig)
if i < 0 || i >= numSig {
return -1
}
return i
default:
return -1
}
}
func enableSignal(sig int) {
signal_enable(uint32(sig))
}
func disableSignal(sig int) {
signal_disable(uint32(sig))
}
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