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0b8d583320
os/signal depends on a few unexported runtime functions. This removes the assembly stubs it used to get access to these in favour of using //go:linkname in runtime to make the functions accessible to os/signal. This is motivated by ppc64le shared libraries, where you cannot BR to a symbol defined in a shared library (only BL), but it seems like an improvment anyway. Change-Id: I09361203ce38070bd3f132f6dc5ac212f2dc6f58 Reviewed-on: https://go-review.googlesource.com/15871 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Minux Ma <minux@golang.org> Reviewed-by: Dave Cheney <dave@cheney.net>
58 lines
982 B
Go
58 lines
982 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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// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris windows
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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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// Defined by the runtime package.
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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() uint32
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func loop() {
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for {
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process(syscall.Signal(signal_recv()))
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}
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}
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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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const (
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numSig = 65 // max across all systems
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)
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func signum(sig os.Signal) int {
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switch sig := sig.(type) {
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case syscall.Signal:
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i := int(sig)
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if i < 0 || i >= numSig {
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return -1
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}
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return i
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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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