1 files changed, 35 insertions, 0 deletions
diff --git a/libgo/go/exp/ogle/abort.go b/libgo/go/exp/ogle/abort.go
new file mode 100644
index 000000000..311a7b38e
--- /dev/null
+++ b/libgo/go/exp/ogle/abort.go
@@ -0,0 +1,35 @@
+// 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 ogle
+
+import (
+	"os"
+	"runtime"
+)
+
+// An aborter aborts the thread's current computation, usually
+// passing the error to a waiting thread.
+type aborter interface {
+	Abort(err os.Error)
+}
+
+type ogleAborter chan os.Error
+
+func (a ogleAborter) Abort(err os.Error) {
+	a <- err
+	runtime.Goexit()
+}
+
+// try executes a computation; if the computation Aborts, try returns
+// the error passed to abort.
+func try(f func(a aborter)) os.Error {
+	a := make(ogleAborter)
+	go func() {
+		f(a)
+		a <- nil
+	}()
+	err := <-a
+	return err
+}