1 files changed, 48 insertions, 0 deletions
diff --git a/libgo/go/os/signal/signal.go b/libgo/go/os/signal/signal.go
new file mode 100644
index 000000000..666c03e73
--- /dev/null
+++ b/libgo/go/os/signal/signal.go
@@ -0,0 +1,48 @@
+// Copyright 2009 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 implements operating system-independent signal handling.
+package signal
+
+import (
+	"runtime"
+	"strconv"
+)
+
+// A Signal can represent any operating system signal.
+type Signal interface {
+	String() string
+}
+
+type UnixSignal int32
+
+func (sig UnixSignal) String() string {
+	s := runtime.Signame(int32(sig))
+	if len(s) > 0 {
+		return s
+	}
+	return "Signal " + strconv.Itoa(int(sig))
+}
+
+// Incoming is the global signal channel.
+// All signals received by the program will be delivered to this channel.
+var Incoming <-chan Signal
+
+func process(ch chan<- Signal) {
+	for {
+		var mask uint32 = runtime.Sigrecv()
+		for sig := uint(0); sig < 32; sig++ {
+			if mask&(1<<sig) != 0 {
+				ch <- UnixSignal(sig)
+			}
+		}
+	}
+}
+
+func init() {
+	runtime.Siginit()
+	ch := make(chan Signal) // Done here so Incoming can have type <-chan Signal
+	Incoming = ch
+	go process(ch)
+}