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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 CONTENT_RENDERER_SHARED_MEMORY_SEQLOCK_READER_H_ | 5 #ifndef CONTENT_RENDERER_SHARED_MEMORY_SEQLOCK_READER_H_ |
6 #define CONTENT_RENDERER_SHARED_MEMORY_SEQLOCK_READER_H_ | 6 #define CONTENT_RENDERER_SHARED_MEMORY_SEQLOCK_READER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
| 10 #include <memory> |
| 11 |
10 #include "base/logging.h" | 12 #include "base/logging.h" |
11 #include "base/macros.h" | 13 #include "base/macros.h" |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "base/memory/shared_memory.h" | 14 #include "base/memory/shared_memory.h" |
14 #include "content/common/shared_memory_seqlock_buffer.h" | 15 #include "content/common/shared_memory_seqlock_buffer.h" |
15 | 16 |
16 namespace content { | 17 namespace content { |
17 namespace internal { | 18 namespace internal { |
18 | 19 |
19 class SharedMemorySeqLockReaderBase { | 20 class SharedMemorySeqLockReaderBase { |
20 protected: | 21 protected: |
21 SharedMemorySeqLockReaderBase(); | 22 SharedMemorySeqLockReaderBase(); |
22 virtual ~SharedMemorySeqLockReaderBase(); | 23 virtual ~SharedMemorySeqLockReaderBase(); |
23 | 24 |
24 void* InitializeSharedMemory( | 25 void* InitializeSharedMemory( |
25 base::SharedMemoryHandle shared_memory_handle, | 26 base::SharedMemoryHandle shared_memory_handle, |
26 size_t buffer_size); | 27 size_t buffer_size); |
27 | 28 |
28 bool FetchFromBuffer(content::OneWriterSeqLock* seqlock, void* final, | 29 bool FetchFromBuffer(content::OneWriterSeqLock* seqlock, void* final, |
29 void* temp, void* from, size_t size); | 30 void* temp, void* from, size_t size); |
30 | 31 |
31 static const int kMaximumContentionCount = 10; | 32 static const int kMaximumContentionCount = 10; |
32 base::SharedMemoryHandle renderer_shared_memory_handle_; | 33 base::SharedMemoryHandle renderer_shared_memory_handle_; |
33 scoped_ptr<base::SharedMemory> renderer_shared_memory_; | 34 std::unique_ptr<base::SharedMemory> renderer_shared_memory_; |
34 }; | 35 }; |
35 | 36 |
36 } // namespace internal | 37 } // namespace internal |
37 | 38 |
38 // Template argument Data should be a pod-like structure only containing | 39 // Template argument Data should be a pod-like structure only containing |
39 // data fields, such that it is copyable by memcpy method. | 40 // data fields, such that it is copyable by memcpy method. |
40 template<typename Data> | 41 template<typename Data> |
41 class SharedMemorySeqLockReader | 42 class SharedMemorySeqLockReader |
42 : private internal::SharedMemorySeqLockReaderBase { | 43 : private internal::SharedMemorySeqLockReaderBase { |
43 public: | 44 public: |
(...skipping 12 matching lines...) Expand all Loading... |
56 shared_memory_handle, sizeof(SharedMemorySeqLockBuffer<Data>))) { | 57 shared_memory_handle, sizeof(SharedMemorySeqLockBuffer<Data>))) { |
57 buffer_ = static_cast<SharedMemorySeqLockBuffer<Data>*>(memory); | 58 buffer_ = static_cast<SharedMemorySeqLockBuffer<Data>*>(memory); |
58 temp_buffer_.reset(new Data); | 59 temp_buffer_.reset(new Data); |
59 return true; | 60 return true; |
60 } | 61 } |
61 return false; | 62 return false; |
62 } | 63 } |
63 | 64 |
64 private: | 65 private: |
65 SharedMemorySeqLockBuffer<Data>* buffer_; | 66 SharedMemorySeqLockBuffer<Data>* buffer_; |
66 scoped_ptr<Data> temp_buffer_; | 67 std::unique_ptr<Data> temp_buffer_; |
67 | 68 |
68 DISALLOW_COPY_AND_ASSIGN(SharedMemorySeqLockReader); | 69 DISALLOW_COPY_AND_ASSIGN(SharedMemorySeqLockReader); |
69 }; | 70 }; |
70 | 71 |
71 } // namespace content | 72 } // namespace content |
72 | 73 |
73 #endif // CONTENT_RENDERER_SHARED_MEMORY_SEQLOCK_READER_H_ | 74 #endif // CONTENT_RENDERER_SHARED_MEMORY_SEQLOCK_READER_H_ |
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