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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_ | 5 #ifndef MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_ |
| 6 #define MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_ | 6 #define MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_ |
| 7 | 7 |
| 8 #include "base/macros.h" | 8 #include "base/macros.h" |
| 9 #include "base/memory/aligned_memory.h" | 9 #include "base/memory/aligned_memory.h" |
| 10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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| 75 | 75 |
| 76 // Get the maximum (single) write/read size right now (in number of elements); | 76 // Get the maximum (single) write/read size right now (in number of elements); |
| 77 // result fits in a |uint32_t|. | 77 // result fits in a |uint32_t|. |
| 78 size_t GetMaxNumBytesToWrite(); | 78 size_t GetMaxNumBytesToWrite(); |
| 79 size_t GetMaxNumBytesToRead(); | 79 size_t GetMaxNumBytesToRead(); |
| 80 | 80 |
| 81 // Marks the given number of bytes as consumed/discarded. |num_bytes| must be | 81 // Marks the given number of bytes as consumed/discarded. |num_bytes| must be |
| 82 // no greater than |current_num_bytes_|. | 82 // no greater than |current_num_bytes_|. |
| 83 void MarkDataAsConsumed(size_t num_bytes); | 83 void MarkDataAsConsumed(size_t num_bytes); |
| 84 | 84 |
| 85 // Converts queued data to messages (leaves |buffer_| empty). | |
| 86 void ConvertDataToMessages(MessageInTransitQueue* message_queue); | |
| 87 | |
| 88 scoped_ptr<char, base::AlignedFreeDeleter> buffer_; | 85 scoped_ptr<char, base::AlignedFreeDeleter> buffer_; |
| 89 // Circular buffer. | 86 // Circular buffer. |
| 90 size_t start_index_; | 87 size_t start_index_; |
| 91 size_t current_num_bytes_; | 88 size_t current_num_bytes_; |
| 92 | 89 |
| 93 DISALLOW_COPY_AND_ASSIGN(LocalDataPipeImpl); | 90 DISALLOW_COPY_AND_ASSIGN(LocalDataPipeImpl); |
| 94 }; | 91 }; |
| 95 | 92 |
| 96 } // namespace system | 93 } // namespace system |
| 97 } // namespace mojo | 94 } // namespace mojo |
| 98 | 95 |
| 99 #endif // MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_ | 96 #endif // MOJO_EDK_SYSTEM_LOCAL_DATA_PIPE_IMPL_H_ |
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