OLD | NEW |
| (Empty) |
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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CONTENT_COMMON_SHARED_MEMORY_SEQLOCK_BUFFER_H_ | |
6 #define CONTENT_COMMON_SHARED_MEMORY_SEQLOCK_BUFFER_H_ | |
7 | |
8 #include "content/common/one_writer_seqlock.h" | |
9 | |
10 namespace content { | |
11 | |
12 // This structure is stored in shared memory that's shared between the browser | |
13 // which does the hardware polling, and the consumers of the data, | |
14 // i.e. the renderers. The performance characteristics are that | |
15 // we want low latency (so would like to avoid explicit communication via IPC | |
16 // between producer and consumer) and relatively large data size. | |
17 // | |
18 // Writer and reader operate on the same buffer assuming contention is low, and | |
19 // contention is detected by using the associated SeqLock. | |
20 | |
21 template<class Data> | |
22 class SharedMemorySeqLockBuffer { | |
23 public: | |
24 OneWriterSeqLock seqlock; | |
25 Data data; | |
26 }; | |
27 | |
28 } // namespace content | |
29 | |
30 #endif // CONTENT_COMMON_SHARED_MEMORY_SEQLOCK_BUFFER_H_ | |
OLD | NEW |