Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

os/signal: add func Ignored(sig Signal) bool

Browse source 
Ignored reports whether sig is currently ignored.

This implementation only works applies on Unix systems for now.  However, at
the moment that is also the case for Ignore() and several other signal
interaction methods, so that seems fair.

Fixes #22497

Change-Id: I7c1b1a5e12373ca5da44709500ff5acedc6f1316
Reviewed-on: https://go-review.googlesource.com/108376
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Adam Azarchs 2018-04-19 19:59:39 -07:00 • committed by Ian Lance Taylor
parent 37dd7cd040
commit dfb1b69665
7 changed files with 94 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/runtime/sigqueue.go
View file

@ -237,7 +237,16 @@ func signal_ignore(s uint32) {
atomic.Store(&sig.ignored[s/32], i)
}
// sigInitIgnored marks the signal as already ignored. This is called at
// program start by siginit.
func sigInitIgnored(s uint32) {
i := sig.ignored[s/32]
i |= 1 << (s & 31)
atomic.Store(&sig.ignored[s/32], i)
}
// Checked by signal handlers.
//go:linkname signal_ignored os/signal.signal_ignored
func signal_ignored(s uint32) bool {
i := atomic.Load(&sig.ignored[s/32])
return i&(1<<(s&31)) != 0