| // 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 <memory> |
| |
| #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; |
| |
| 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_ |