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os/signal: selective signal handling

Browse source 
Restore package os/signal, with new API:
Notify replaces Incoming, allowing clients
to ask for certain signals only.  Also, signals
go to everyone who asks, not just one client.

This could plausibly move into package os now
that there are no magic side effects as a result
of the import.

Update runtime for new API: move common Unix
signal handling code into signal_unix.c.
(It's so easy to do this now that we don't have
to edit Makefiles!)

Tested on darwin,linux 386,amd64.

Fixes #1266.

R=r, dsymonds, bradfitz, iant, borman
CC=golang-dev
https://golang.org/cl/3749041
This commit is contained in:
Russ Cox 2012-02-13 13:52:37 -05:00
parent cdd7e02583
commit 35586f718c
61 changed files with 1216 additions and 1266 deletions
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10
src/pkg/syscall/syscall_linux.go
View file

@ -151,18 +151,18 @@ func (w WaitStatus) ExitStatus() int {
return int(w>>shift) & 0xFF
}
func (w WaitStatus) Signal() int {
func (w WaitStatus) Signal() Signal {
if !w.Signaled() {
return -1
}
return int(w & mask)
return Signal(w & mask)
}
func (w WaitStatus) StopSignal() int {
func (w WaitStatus) StopSignal() Signal {
if !w.Stopped() {
return -1
}
return int(w>>shift) & 0xFF
return Signal(w>>shift) & 0xFF
}
func (w WaitStatus) TrapCause() int {
@ -830,7 +830,7 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri
//sysnb InotifyInit() (fd int, err error)
//sysnb InotifyInit1(flags int) (fd int, err error)
//sysnb InotifyRmWatch(fd int, watchdesc uint32) (success int, err error)
//sysnb Kill(pid int, sig int) (err error)
//sysnb Kill(pid int, sig Signal) (err error)
//sys Klogctl(typ int, buf []byte) (n int, err error) = SYS_SYSLOG
//sys Link(oldpath string, newpath string) (err error)
//sys Mkdir(path string, mode uint32) (err error)