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os/signal, runtime: remove runtime sigqueue initialization

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We can initialize the runtime sigqueue packages on first use.
We don't require an explicit initialization step. So, remove it.

Change-Id: I484e02dc2c67395fd5584f35ecda2e28b37168df
Reviewed-on: https://go-review.googlesource.com/c/go/+/226540
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
This commit is contained in:
Ian Lance Taylor 2020-03-31 10:49:31 -07:00
parent 620208790e
commit 2681efaf0e
5 changed files with 13 additions and 21 deletions
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9
src/runtime/sigqueue.go
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@ -192,16 +192,13 @@ func signalWaitUntilIdle() {
//go:linkname signal_enable os/signal.signal_enable
func signal_enable(s uint32) {
if !sig.inuse {
// The first call to signal_enable is for us
// to use for initialization. It does not pass
// signal information in m.
// This is the first call to signal_enable. Initialize.
sig.inuse = true // enable reception of signals; cannot disable
if GOOS == "darwin" {
sigNoteSetup(&sig.note)
return
} else {
noteclear(&sig.note)
}
noteclear(&sig.note)
return
}
if s >= uint32(len(sig.wanted)*32) {