1 files changed, 25 insertions, 0 deletions
diff --git a/mojo/public/cpp/utility/run_loop_handler.h b/mojo/public/cpp/utility/run_loop_handler.h
new file mode 100644
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--- /dev/null
+++ b/mojo/public/cpp/utility/run_loop_handler.h
@@ -0,0 +1,25 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_HANDLER_H_
+#define MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_HANDLER_H_
+
+#include "mojo/public/cpp/system/core.h"
+
+namespace mojo {
+
+// Used by RunLoop to notify when a handle is either ready or has become
+// invalid.
+class RunLoopHandler {
+ public:
+  virtual void OnHandleReady(const Handle& handle) = 0;
+  virtual void OnHandleError(const Handle& handle, MojoResult result) = 0;
+
+ protected:
+  virtual ~RunLoopHandler() {}
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_CPP_UTILITY_RUN_LOOP_HANDLER_H_