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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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 // See net/disk_cache/disk_cache.h for the public interface of the cache. | 5 // See net/disk_cache/disk_cache.h for the public interface of the cache. |
6 | 6 |
7 #ifndef NET_DISK_CACHE_BLOCKFILE_FILE_BLOCK_H_ | 7 #ifndef NET_DISK_CACHE_BLOCKFILE_FILE_BLOCK_H_ |
8 #define NET_DISK_CACHE_BLOCKFILE_FILE_BLOCK_H_ | 8 #define NET_DISK_CACHE_BLOCKFILE_FILE_BLOCK_H_ |
9 | 9 |
| 10 #include <stddef.h> |
| 11 |
10 namespace disk_cache { | 12 namespace disk_cache { |
11 | 13 |
12 // This interface exposes common functionality for a single block of data | 14 // This interface exposes common functionality for a single block of data |
13 // stored on a file-block, regardless of the real type or size of the block. | 15 // stored on a file-block, regardless of the real type or size of the block. |
14 // Used to simplify loading / storing the block from disk. | 16 // Used to simplify loading / storing the block from disk. |
15 class FileBlock { | 17 class FileBlock { |
16 public: | 18 public: |
17 virtual ~FileBlock() {} | 19 virtual ~FileBlock() {} |
18 | 20 |
19 // Returns a pointer to the actual data. | 21 // Returns a pointer to the actual data. |
20 virtual void* buffer() const = 0; | 22 virtual void* buffer() const = 0; |
21 | 23 |
22 // Returns the size of the block; | 24 // Returns the size of the block; |
23 virtual size_t size() const = 0; | 25 virtual size_t size() const = 0; |
24 | 26 |
25 // Returns the file offset of this block. | 27 // Returns the file offset of this block. |
26 virtual int offset() const = 0; | 28 virtual int offset() const = 0; |
27 }; | 29 }; |
28 | 30 |
29 } // namespace disk_cache | 31 } // namespace disk_cache |
30 | 32 |
31 #endif // NET_DISK_CACHE_BLOCKFILE_FILE_BLOCK_H_ | 33 #endif // NET_DISK_CACHE_BLOCKFILE_FILE_BLOCK_H_ |
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