Index: mojo/edk/system/ports/node_delegate.h |
diff --git a/mojo/edk/system/ports/node_delegate.h b/mojo/edk/system/ports/node_delegate.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7e15e7ea75e0cd196f0f9eeda6920caebd6c5f12 |
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+++ b/mojo/edk/system/ports/node_delegate.h |
@@ -0,0 +1,45 @@ |
+// 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_NODE_DELEGATE_H_ |
+#define MOJO_EDK_SYSTEM_PORTS_NODE_DELEGATE_H_ |
+ |
+#include <stddef.h> |
+ |
+#include "mojo/edk/system/ports/message.h" |
+#include "mojo/edk/system/ports/name.h" |
+#include "mojo/edk/system/ports/port_ref.h" |
+ |
+namespace mojo { |
+namespace edk { |
+namespace ports { |
+ |
+class NodeDelegate { |
+ public: |
+ virtual ~NodeDelegate() {} |
+ |
+ // Port names should be difficult to guess. |
+ virtual void GenerateRandomPortName(PortName* port_name) = 0; |
+ |
+ // Allocate a message, including a header that can be used by the Node |
+ // implementation. |num_header_bytes| will be aligned. The newly allocated |
+ // memory need not be zero-filled. |
+ virtual void AllocMessage(size_t num_header_bytes, |
+ ScopedMessage* message) = 0; |
+ |
+ // Forward a message asynchronously to the specified node. This method MUST |
+ // NOT synchronously call any methods on Node. |
+ virtual void ForwardMessage(const NodeName& node, ScopedMessage message) = 0; |
+ |
+ // Indicates that the port's status has changed recently. Use Node::GetStatus |
+ // to query the latest status of the port. Note, this event could be spurious |
+ // if another thread is simultaneously modifying the status of the port. |
+ virtual void PortStatusChanged(const PortRef& port_ref) = 0; |
+}; |
+ |
+} // namespace ports |
+} // namespace edk |
+} // namespace mojo |
+ |
+#endif // MOJO_EDK_SYSTEM_PORTS_NODE_DELEGATE_H_ |