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path: root/libgo/go/os/signal/signal_plan9.go
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Diffstat (limited to 'libgo/go/os/signal/signal_plan9.go')
-rw-r--r--libgo/go/os/signal/signal_plan9.go60
1 files changed, 60 insertions, 0 deletions
diff --git a/libgo/go/os/signal/signal_plan9.go b/libgo/go/os/signal/signal_plan9.go
new file mode 100644
index 00000000000..b065ae520d7
--- /dev/null
+++ b/libgo/go/os/signal/signal_plan9.go
@@ -0,0 +1,60 @@
+// 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.
+
+package signal
+
+import (
+ "os"
+ "syscall"
+)
+
+var sigtab = make(map[os.Signal]int)
+
+// In sig.s; jumps to runtime.
+func signal_disable(uint32)
+func signal_enable(uint32)
+func signal_ignore(uint32)
+func signal_recv() string
+
+func init() {
+ signal_enable(0) // first call - initialize
+ go loop()
+}
+
+func loop() {
+ for {
+ process(syscall.Note(signal_recv()))
+ }
+}
+
+const numSig = 256
+
+func signum(sig os.Signal) int {
+ switch sig := sig.(type) {
+ case syscall.Note:
+ n, ok := sigtab[sig]
+ if !ok {
+ n = len(sigtab) + 1
+ if n > numSig {
+ return -1
+ }
+ sigtab[sig] = n
+ }
+ return n
+ default:
+ return -1
+ }
+}
+
+func enableSignal(sig int) {
+ signal_enable(uint32(sig))
+}
+
+func disableSignal(sig int) {
+ signal_disable(uint32(sig))
+}
+
+func ignoreSignal(sig int) {
+ signal_ignore(uint32(sig))
+}