C++ bindings

mojo/public/bindings/lib/message.h

+// 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_BINDINGS_LIB_MESSAGE_H_
+#define MOJO_PUBLIC_BINDINGS_LIB_MESSAGE_H_
+
+#include <vector>
+
+#include "mojo/public/system/core.h"
+
+namespace mojo {
+
+struct MessageHeader {
+  uint32_t num_bytes;
+  uint32_t name;
+};
+
+struct MessageData {
+  MessageHeader header;
+  uint8_t payload[1];
+};
+
+struct Message {
+  Message();
+  ~Message();
+
+  MessageData* data;  // Heap-allocated.
+  std::vector<Handle> handles;
+};
+
+class MessageReceiver {
+ public:
+  // The receiver may mutate the given message or take ownership of the its
+  // contents. Upon return, if message->data is non-null, then the caller
+  // regains ownership of the Message and should be responsible for freeing its
+  // data member.
+  virtual bool Accept(Message* message) = 0;
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_BINDINGS_LIB_MESSAGE_H_