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Side by Side Diff: net/disk_cache/simple/simple_entry_format_history.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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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 NET_DISK_CACHE_SIMPLE_SIMPLE_ENTRY_FORMAT_HISTORY_H_
6 #define NET_DISK_CACHE_SIMPLE_SIMPLE_ENTRY_FORMAT_HISTORY_H_
7
8 #include "base/basictypes.h"
9 #include "base/port.h"
10 #include "net/base/net_export.h"
11
12 namespace disk_cache {
13
14 namespace simplecache_v5 {
15
16 const uint64 kSimpleInitialMagicNumber = GG_UINT64_C(0xfcfb6d1ba7725c30);
17 const uint64 kSimpleFinalMagicNumber = GG_UINT64_C(0xf4fa6f45970d41d8);
18
19 // A file containing stream 0 and stream 1 in the Simple cache consists of:
20 // - a SimpleFileHeader.
21 // - the key.
22 // - the data from stream 1.
23 // - a SimpleFileEOF record for stream 1.
24 // - the data from stream 0.
25 // - a SimpleFileEOF record for stream 0.
26
27 // A file containing stream 2 in the Simple cache consists of:
28 // - a SimpleFileHeader.
29 // - the key.
30 // - the data.
31 // - at the end, a SimpleFileEOF record.
32 static const int kSimpleEntryFileCount = 2;
33 static const int kSimpleEntryStreamCount = 3;
34
35 struct NET_EXPORT_PRIVATE SimpleFileHeader {
36 SimpleFileHeader();
37
38 uint64 initial_magic_number;
39 uint32 version;
40 uint32 key_length;
41 uint32 key_hash;
42 };
43
44 struct NET_EXPORT_PRIVATE SimpleFileEOF {
45 enum Flags {
46 FLAG_HAS_CRC32 = (1U << 0),
47 };
48
49 SimpleFileEOF();
50
51 uint64 final_magic_number;
52 uint32 flags;
53 uint32 data_crc32;
54 // |stream_size| is only used in the EOF record for stream 0.
55 uint32 stream_size;
56 };
57
58 } // namespace simplecache_v5
59
60 } // namespace disk_cache
61
62 #endif // NET_DISK_CACHE_SIMPLE_SIMPLE_ENTRY_FORMAT_HISTORY_H_
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