Index: mojo/edk/system/data_pipe_control_message.h |
diff --git a/mojo/edk/system/data_pipe_control_message.h b/mojo/edk/system/data_pipe_control_message.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7552dd01dc0ceef7ff4d23bdcc901348570e2493 |
--- /dev/null |
+++ b/mojo/edk/system/data_pipe_control_message.h |
@@ -0,0 +1,43 @@ |
+// 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_DATA_PIPE_CONTROL_MESSAGE_H_ |
+#define MOJO_EDK_SYSTEM_DATA_PIPE_CONTROL_MESSAGE_H_ |
+ |
+#include <stdint.h> |
+ |
+#include "base/memory/scoped_ptr.h" |
+#include "mojo/edk/embedder/scoped_platform_handle.h" |
+#include "mojo/edk/system/ports/port_ref.h" |
+#include "mojo/public/c/system/macros.h" |
+ |
+namespace mojo { |
+namespace edk { |
+ |
+class NodeController; |
+class PortsMessage; |
+ |
+enum DataPipeCommand : uint32_t { |
+ // Signal to the consumer that new data is available. |
+ DATA_WAS_WRITTEN, |
+ |
+ // Signal to the producer that data has been consumed. |
+ DATA_WAS_READ, |
+}; |
+ |
+// Message header for messages sent over a data pipe control port. |
+struct MOJO_ALIGNAS(8) DataPipeControlMessage { |
+ DataPipeCommand command; |
+ uint32_t num_bytes; |
+}; |
+ |
+void SendDataPipeControlMessage(NodeController* node_controller, |
+ const ports::PortRef& port, |
+ DataPipeCommand command, |
+ uint32_t num_bytes); |
+ |
+} // namespace edk |
+} // namespace mojo |
+ |
+#endif // MOJO_EDK_SYSTEM_DATA_PIPE_CONTROL_MESSAGE_H_ |