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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 // The cache is stored on disk as a collection of block-files, plus an index | 5 // The cache is stored on disk as a collection of block-files, plus an index |
6 // plus a collection of external files. | 6 // plus a collection of external files. |
7 // | 7 // |
8 // Any data blob bigger than kMaxBlockSize (disk_cache/addr.h) will be stored in | 8 // Any data blob bigger than kMaxBlockSize (disk_cache/addr.h) will be stored in |
9 // a separate file named f_xxx where x is a hexadecimal number. Shorter data | 9 // a separate file named f_xxx where x is a hexadecimal number. Shorter data |
10 // will be stored as a series of blocks on a block-file. In any case, CacheAddr | 10 // will be stored as a series of blocks on a block-file. In any case, CacheAddr |
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39 // backup files for cache bitmaps, used to detect entries out of date. | 39 // backup files for cache bitmaps, used to detect entries out of date. |
40 // | 40 // |
41 // Although cache files are to be consumed on the same machine that creates | 41 // Although cache files are to be consumed on the same machine that creates |
42 // them, if files are to be moved accross machines, little endian storage is | 42 // them, if files are to be moved accross machines, little endian storage is |
43 // assumed. | 43 // assumed. |
44 | 44 |
45 #ifndef NET_DISK_CACHE_BLOCKFILE_DISK_FORMAT_V3_H_ | 45 #ifndef NET_DISK_CACHE_BLOCKFILE_DISK_FORMAT_V3_H_ |
46 #define NET_DISK_CACHE_BLOCKFILE_DISK_FORMAT_V3_H_ | 46 #define NET_DISK_CACHE_BLOCKFILE_DISK_FORMAT_V3_H_ |
47 | 47 |
48 #include <stdint.h> | 48 #include <stdint.h> |
| 49 #include <string.h> |
49 | 50 |
50 #include "net/disk_cache/blockfile/disk_format_base.h" | 51 #include "net/disk_cache/blockfile/disk_format_base.h" |
51 | 52 |
52 namespace disk_cache { | 53 namespace disk_cache { |
53 | 54 |
54 const int kBaseTableLen = 0x400; | 55 const int kBaseTableLen = 0x400; |
55 const uint32_t kIndexMagicV3 = 0xC103CAC3; | 56 const uint32_t kIndexMagicV3 = 0xC103CAC3; |
56 const uint32_t kVersion3 = 0x30000; // Version 3.0. | 57 const uint32_t kVersion3 = 0x30000; // Version 3.0. |
57 | 58 |
58 // Flags for a given cache. | 59 // Flags for a given cache. |
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238 int32_t key_len; | 239 int32_t key_len; |
239 uint64_t last_access_time; | 240 uint64_t last_access_time; |
240 uint32_t long_hash[5]; | 241 uint32_t long_hash[5]; |
241 uint32_t self_hash; | 242 uint32_t self_hash; |
242 }; | 243 }; |
243 static_assert(sizeof(ShortEntryRecord) == 48, "bad ShortEntryRecord"); | 244 static_assert(sizeof(ShortEntryRecord) == 48, "bad ShortEntryRecord"); |
244 | 245 |
245 } // namespace disk_cache | 246 } // namespace disk_cache |
246 | 247 |
247 #endif // NET_DISK_CACHE_BLOCKFILE_DISK_FORMAT_V3_H_ | 248 #endif // NET_DISK_CACHE_BLOCKFILE_DISK_FORMAT_V3_H_ |
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