Implementation of MessagePump for Mojo.

mojo/common/message_pump_mojo_handler.h

Index: mojo/common/message_pump_mojo_handler.h
diff --git a/mojo/common/message_pump_mojo_handler.h b/mojo/common/message_pump_mojo_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..84162d107b27b06e4c5e0e1cf2604e483f9c7e1b
--- /dev/null
+++ b/mojo/common/message_pump_mojo_handler.h
@@ -0,0 +1,29 @@
+// 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_COMMON_MESSAGE_PUMP_MOJO_HANDLER_H_
+#define MOJO_COMMON_MESSAGE_PUMP_MOJO_HANDLER_H_
+
+#include "mojo/common/mojo_common_export.h"
+#include "mojo/public/system/core.h"
+
+namespace mojo {
+namespace common {
+
+// Used by MessagePumpMojo to notify when a handle is either ready or has become
+// invalid.
+class MOJO_COMMON_EXPORT MessagePumpMojoHandler {
+ public:
+  virtual void OnHandleReady(MojoHandle handle) = 0;
+
+  virtual void OnHandleInvalid(MojoHandle handle, MojoResult result) = 0;

[darin (slow to review), 2013/11/09 00:47:50]

Perhaps this should be more generic such as OnHandleError? MojoWait could
(should) fail if the other end of the pipe is closed. That isn't the same thing
as someone closing this end of the pipe.

+
+ protected:
+  virtual ~MessagePumpMojoHandler() {}
+};
+
+}  // namespace common
+}  // namespace mojo
+
+#endif  // MOJO_COMMON_MESSAGE_PUMP_MOJO_HANDLER_H_