1 files changed, 60 insertions, 0 deletions
diff --git a/mojo/edk/system/ports/port.h b/mojo/edk/system/ports/port.h
new file mode 100644
index 0000000000..ea53d43b5f
--- /dev/null
+++ b/mojo/edk/system/ports/port.h
@@ -0,0 +1,60 @@
+// Copyright 2016 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_EDK_SYSTEM_PORTS_PORT_H_
+#define MOJO_EDK_SYSTEM_PORTS_PORT_H_
+
+#include <memory>
+#include <queue>
+#include <utility>
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/synchronization/lock.h"
+#include "mojo/edk/system/ports/message_queue.h"
+#include "mojo/edk/system/ports/user_data.h"
+
+namespace mojo {
+namespace edk {
+namespace ports {
+
+class Port : public base::RefCountedThreadSafe<Port> {
+ public:
+  enum State {
+    kUninitialized,
+    kReceiving,
+    kBuffering,
+    kProxying,
+    kClosed
+  };
+
+  base::Lock lock;
+  State state;
+  NodeName peer_node_name;
+  PortName peer_port_name;
+  uint64_t next_sequence_num_to_send;
+  uint64_t last_sequence_num_to_receive;
+  MessageQueue message_queue;
+  std::unique_ptr<std::pair<NodeName, ScopedMessage>> send_on_proxy_removal;
+  scoped_refptr<UserData> user_data;
+  bool remove_proxy_on_last_message;
+  bool peer_closed;
+
+  Port(uint64_t next_sequence_num_to_send,
+       uint64_t next_sequence_num_to_receive);
+
+ private:
+  friend class base::RefCountedThreadSafe<Port>;
+
+  ~Port();
+
+  DISALLOW_COPY_AND_ASSIGN(Port);
+};
+
+}  // namespace ports
+}  // namespace edk
+}  // namespace mojo
+
+#endif  // MOJO_EDK_SYSTEM_PORTS_PORT_H_