Update mojo sdk to rev 3d23dae011859a2aae49f1d1adde705c8e85d819

third_party/mojo/src/mojo/edk/system/local_data_pipe_impl.h

Index: third_party/mojo/src/mojo/edk/system/local_data_pipe_impl.h
diff --git a/third_party/mojo/src/mojo/edk/system/local_data_pipe_impl.h b/third_party/mojo/src/mojo/edk/system/local_data_pipe_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..14defcbe5593c6cbf02a7e646b7397057bbc3d9a
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+++ b/third_party/mojo/src/mojo/edk/system/local_data_pipe_impl.h
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+// Copyright 2013 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_LOCAL_DATA_PIPE_IMPL_H_
+#define MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_
+
+#include "base/macros.h"
+#include "base/memory/aligned_memory.h"
+#include "base/memory/scoped_ptr.h"
+#include "mojo/edk/system/data_pipe_impl.h"
+#include "mojo/edk/system/system_impl_export.h"
+
+namespace mojo {
+namespace system {
+
+class DataPipe;
+
+// |LocalDataPipeImpl| is a subclass that "implements" |DataPipe| for data pipes
+// whose producer and consumer are both local. See |DataPipeImpl| for more
+// details.
+class MOJO_SYSTEM_IMPL_EXPORT LocalDataPipeImpl : public DataPipeImpl {
+ public:
+  LocalDataPipeImpl();
+  ~LocalDataPipeImpl() override;
+
+ private:
+  // |DataPipeImpl| implementation:
+  void ProducerClose() override;
+  MojoResult ProducerWriteData(UserPointer<const void> elements,
+                               UserPointer<uint32_t> num_bytes,
+                               uint32_t max_num_bytes_to_write,
+                               uint32_t min_num_bytes_to_write) override;
+  MojoResult ProducerBeginWriteData(UserPointer<void*> buffer,
+                                    UserPointer<uint32_t> buffer_num_bytes,
+                                    uint32_t min_num_bytes_to_write) override;
+  MojoResult ProducerEndWriteData(uint32_t num_bytes_written) override;
+  HandleSignalsState ProducerGetHandleSignalsState() const override;
+  void ProducerStartSerialize(Channel* channel,
+                              size_t* max_size,
+                              size_t* max_platform_handles) override;
+  bool ProducerEndSerialize(
+      Channel* channel,
+      void* destination,
+      size_t* actual_size,
+      embedder::PlatformHandleVector* platform_handles) override;
+  void ConsumerClose() override;
+  MojoResult ConsumerReadData(UserPointer<void> elements,
+                              UserPointer<uint32_t> num_bytes,
+                              uint32_t max_num_bytes_to_read,
+                              uint32_t min_num_bytes_to_read,
+                              bool peek) override;
+  MojoResult ConsumerDiscardData(UserPointer<uint32_t> num_bytes,
+                                 uint32_t max_num_bytes_to_discard,
+                                 uint32_t min_num_bytes_to_discard) override;
+  MojoResult ConsumerQueryData(UserPointer<uint32_t> num_bytes) override;
+  MojoResult ConsumerBeginReadData(UserPointer<const void*> buffer,
+                                   UserPointer<uint32_t> buffer_num_bytes,
+                                   uint32_t min_num_bytes_to_read) override;
+  MojoResult ConsumerEndReadData(uint32_t num_bytes_read) override;
+  HandleSignalsState ConsumerGetHandleSignalsState() const override;
+  void ConsumerStartSerialize(Channel* channel,
+                              size_t* max_size,
+                              size_t* max_platform_handles) override;
+  bool ConsumerEndSerialize(
+      Channel* channel,
+      void* destination,
+      size_t* actual_size,
+      embedder::PlatformHandleVector* platform_handles) override;
+
+  void EnsureBuffer();
+  void DestroyBuffer();
+
+  // Get the maximum (single) write/read size right now (in number of elements);
+  // result fits in a |uint32_t|.
+  size_t GetMaxNumBytesToWrite();
+  size_t GetMaxNumBytesToRead();
+
+  // Marks the given number of bytes as consumed/discarded. |num_bytes| must be
+  // greater than |current_num_bytes_|.
+  void MarkDataAsConsumed(size_t num_bytes);
+
+  scoped_ptr<char, base::AlignedFreeDeleter> buffer_;
+  // Circular buffer.
+  size_t start_index_;
+  size_t current_num_bytes_;
+
+  DISALLOW_COPY_AND_ASSIGN(LocalDataPipeImpl);
+};
+
+}  // namespace system
+}  // namespace mojo
+
+#endif  // MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_