Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(40)

Side by Side Diff: net/disk_cache/disk_format.h

Issue 7529043: Rename NET_API to NET_EXPORT, and rename NET_TEST to NET_EXPORT_PRIVATE. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch | Annotate | Revision Log
OLDNEW
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 // file plus a collection of external files. 6 // file plus a collection of external files.
7 // 7 //
8 // Any data blob bigger than kMaxBlockSize (net/addr.h) will be stored on a 8 // Any data blob bigger than kMaxBlockSize (net/addr.h) will be stored on a
9 // separate file named f_xxx where x is a hexadecimal number. Shorter data will 9 // separate file named f_xxx where x is a hexadecimal number. Shorter data will
10 // be stored as a series of blocks on a block-file. In any case, CacheAddr 10 // be stored as a series of blocks on a block-file. In any case, CacheAddr
(...skipping 39 matching lines...) Expand 10 before | Expand all | Expand 10 after
50 // and all the data can be trusted, the dirty flag is cleared from the entry. 50 // and all the data can be trusted, the dirty flag is cleared from the entry.
51 // When the cache encounters an entry whose identifier is different than the one 51 // When the cache encounters an entry whose identifier is different than the one
52 // being currently used, it means that the entry was not properly closed on a 52 // being currently used, it means that the entry was not properly closed on a
53 // previous run, so it is discarded. 53 // previous run, so it is discarded.
54 54
55 #ifndef NET_DISK_CACHE_DISK_FORMAT_H_ 55 #ifndef NET_DISK_CACHE_DISK_FORMAT_H_
56 #define NET_DISK_CACHE_DISK_FORMAT_H_ 56 #define NET_DISK_CACHE_DISK_FORMAT_H_
57 #pragma once 57 #pragma once
58 58
59 #include "base/basictypes.h" 59 #include "base/basictypes.h"
60 #include "net/base/net_api.h" 60 #include "net/base/net_export.h"
61 61
62 namespace disk_cache { 62 namespace disk_cache {
63 63
64 typedef uint32 CacheAddr; 64 typedef uint32 CacheAddr;
65 65
66 const int kIndexTablesize = 0x10000; 66 const int kIndexTablesize = 0x10000;
67 const uint32 kIndexMagic = 0xC103CAC3; 67 const uint32 kIndexMagic = 0xC103CAC3;
68 const uint32 kCurrentVersion = 0x20000; // Version 2.0. 68 const uint32 kCurrentVersion = 0x20000; // Version 2.0.
69 69
70 struct LruData { 70 struct LruData {
71 int32 pad1[2]; 71 int32 pad1[2];
72 int32 filled; // Flag to tell when we filled the cache. 72 int32 filled; // Flag to tell when we filled the cache.
73 int32 sizes[5]; 73 int32 sizes[5];
74 CacheAddr heads[5]; 74 CacheAddr heads[5];
75 CacheAddr tails[5]; 75 CacheAddr tails[5];
76 CacheAddr transaction; // In-flight operation target. 76 CacheAddr transaction; // In-flight operation target.
77 int32 operation; // Actual in-flight operation. 77 int32 operation; // Actual in-flight operation.
78 int32 operation_list; // In-flight operation list. 78 int32 operation_list; // In-flight operation list.
79 int32 pad2[7]; 79 int32 pad2[7];
80 }; 80 };
81 81
82 // Header for the master index file. 82 // Header for the master index file.
83 struct NET_TEST IndexHeader { 83 struct NET_EXPORT_PRIVATE IndexHeader {
84 IndexHeader(); 84 IndexHeader();
85 85
86 uint32 magic; 86 uint32 magic;
87 uint32 version; 87 uint32 version;
88 int32 num_entries; // Number of entries currently stored. 88 int32 num_entries; // Number of entries currently stored.
89 int32 num_bytes; // Total size of the stored data. 89 int32 num_bytes; // Total size of the stored data.
90 int32 last_file; // Last external file created. 90 int32 last_file; // Last external file created.
91 int32 this_id; // Id for all entries being changed (dirty flag). 91 int32 this_id; // Id for all entries being changed (dirty flag).
92 CacheAddr stats; // Storage for usage data. 92 CacheAddr stats; // Storage for usage data.
93 int32 table_len; // Actual size of the table (0 == kIndexTablesize). 93 int32 table_len; // Actual size of the table (0 == kIndexTablesize).
(...skipping 73 matching lines...) Expand 10 before | Expand all | Expand 10 after
167 typedef uint32 AllocBitmap[kMaxBlocks / 32]; 167 typedef uint32 AllocBitmap[kMaxBlocks / 32];
168 168
169 // A block-file is the file used to store information in blocks (could be 169 // A block-file is the file used to store information in blocks (could be
170 // EntryStore blocks, RankingsNode blocks or user-data blocks). 170 // EntryStore blocks, RankingsNode blocks or user-data blocks).
171 // We store entries that can expand for up to 4 consecutive blocks, and keep 171 // We store entries that can expand for up to 4 consecutive blocks, and keep
172 // counters of the number of blocks available for each type of entry. For 172 // counters of the number of blocks available for each type of entry. For
173 // instance, an entry of 3 blocks is an entry of type 3. We also keep track of 173 // instance, an entry of 3 blocks is an entry of type 3. We also keep track of
174 // where did we find the last entry of that type (to avoid searching the bitmap 174 // where did we find the last entry of that type (to avoid searching the bitmap
175 // from the beginning every time). 175 // from the beginning every time).
176 // This Structure is the header of a block-file: 176 // This Structure is the header of a block-file:
177 struct NET_TEST BlockFileHeader { 177 struct NET_EXPORT_PRIVATE BlockFileHeader {
178 BlockFileHeader(); 178 BlockFileHeader();
179 179
180 uint32 magic; 180 uint32 magic;
181 uint32 version; 181 uint32 version;
182 int16 this_file; // Index of this file. 182 int16 this_file; // Index of this file.
183 int16 next_file; // Next file when this one is full. 183 int16 next_file; // Next file when this one is full.
184 int32 entry_size; // Size of the blocks of this file. 184 int32 entry_size; // Size of the blocks of this file.
185 int32 num_entries; // Number of stored entries. 185 int32 num_entries; // Number of stored entries.
186 int32 max_entries; // Current maximum number of entries. 186 int32 max_entries; // Current maximum number of entries.
187 int32 empty[4]; // Counters of empty entries for each type. 187 int32 empty[4]; // Counters of empty entries for each type.
(...skipping 65 matching lines...) Expand 10 before | Expand all | Expand 10 after
253 }; 253 };
254 254
255 // The number of blocks stored by a child entry. 255 // The number of blocks stored by a child entry.
256 const int kNumSparseBits = 1024; 256 const int kNumSparseBits = 1024;
257 COMPILE_ASSERT(sizeof(SparseData) == sizeof(SparseHeader) + kNumSparseBits / 8, 257 COMPILE_ASSERT(sizeof(SparseData) == sizeof(SparseHeader) + kNumSparseBits / 8,
258 Invalid_SparseData_bitmap); 258 Invalid_SparseData_bitmap);
259 259
260 } // namespace disk_cache 260 } // namespace disk_cache
261 261
262 #endif // NET_DISK_CACHE_DISK_FORMAT_H_ 262 #endif // NET_DISK_CACHE_DISK_FORMAT_H_
OLDNEW

Powered by Google App Engine
This is Rietveld 408576698