Initial import of libmojo r405848
This brings libmojo in sync with libchrome.
Bug: 27569341
Test: mma -j32 libmojo
Change-Id: Ia7cb877e46dd3f86f18888b5d8d80bef5468b266
diff --git a/ipc/ipc_listener.h b/ipc/ipc_listener.h
new file mode 100644
index 0000000..0277086
--- /dev/null
+++ b/ipc/ipc_listener.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2012 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 IPC_IPC_LISTENER_H_
+#define IPC_IPC_LISTENER_H_
+
+#include <stdint.h>
+
+#include "build/build_config.h"
+#include "ipc/ipc_export.h"
+
+namespace IPC {
+
+class Message;
+
+// Implemented by consumers of a Channel to receive messages.
+class IPC_EXPORT Listener {
+ public:
+ // Called when a message is received. Returns true iff the message was
+ // handled.
+ virtual bool OnMessageReceived(const Message& message) = 0;
+
+ // Called when the channel is connected and we have received the internal
+ // Hello message from the peer.
+ virtual void OnChannelConnected(int32_t peer_pid) {}
+
+ // Called when an error is detected that causes the channel to close.
+ // This method is not called when a channel is closed normally.
+ virtual void OnChannelError() {}
+
+ // Called when a message's deserialization failed.
+ virtual void OnBadMessageReceived(const Message& message) {}
+
+#if defined(OS_POSIX)
+ // Called on the server side when a channel that listens for connections
+ // denies an attempt to connect.
+ virtual void OnChannelDenied() {}
+
+ // Called on the server side when a channel that listens for connections
+ // has an error that causes the listening channel to close.
+ virtual void OnChannelListenError() {}
+#endif // OS_POSIX
+
+ protected:
+ virtual ~Listener() {}
+};
+
+} // namespace IPC
+
+#endif // IPC_IPC_LISTENER_H_