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Side by Side Diff: net/disk_cache/simple/simple_index_util.cc

Issue 14263005: Refactor our SimpleIndex file format and serialization to use Pickle instead of the previously bugg… (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: similarity Created 7 years, 8 months ago
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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2013 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 #include "net/disk_cache/simple/simple_disk_format.h" 5 #include "net/disk_cache/simple/simple_index_util.h"
6 6
7 #include "base/hash.h"
8 #include "base/logging.h" 7 #include "base/logging.h"
pasko-google - do not use 2013/04/15 14:23:55 logging is not needed
felipeg 2013/04/15 15:37:04 Done.
9 #include "base/sha1.h" 8 #include "base/sha1.h"
10 #include "base/stringprintf.h" 9 #include "base/stringprintf.h"
11 #include "base/strings/string_number_conversions.h" 10 #include "base/strings/string_number_conversions.h"
12 #include "base/time.h"
13 11
14 namespace disk_cache { 12 namespace disk_cache {
15 13
16 std::string ConvertEntryHashKeyToHexString(uint64 hash_key) { 14 std::string ConvertEntryHashKeyToHexString(uint64 hash_key) {
17 const std::string hash_key_str = base::StringPrintf("%016lX", hash_key); 15 const std::string hash_key_str = base::StringPrintf("%016lX", hash_key);
18 DCHECK_EQ(kEntryHashKeyAsHexStringSize, hash_key_str.size()); 16 DCHECK_EQ(kEntryHashKeyAsHexStringSize, hash_key_str.size());
19 return hash_key_str; 17 return hash_key_str;
20 } 18 }
21 19
22 std::string GetEntryHashKeyAsHexString(const std::string& key) { 20 std::string GetEntryHashKeyAsHexString(const std::string& key) {
(...skipping 11 matching lines...) Expand all
34 return base::HexStringToUInt64(hash_key, hash_key_out); 32 return base::HexStringToUInt64(hash_key, hash_key_out);
35 } 33 }
36 34
37 uint64 GetEntryHashKey(const std::string& key) { 35 uint64 GetEntryHashKey(const std::string& key) {
38 const std::string sha_hash = base::SHA1HashString(key); 36 const std::string sha_hash = base::SHA1HashString(key);
39 uint64 hash_key = 0; 37 uint64 hash_key = 0;
40 sha_hash.copy(reinterpret_cast<char*>(&hash_key), sizeof(hash_key)); 38 sha_hash.copy(reinterpret_cast<char*>(&hash_key), sizeof(hash_key));
41 return hash_key; 39 return hash_key;
42 } 40 }
43 41
44 namespace SimpleIndexFile {
45
46 Footer::Footer() {
47 // Make hashing repeatable: leave no padding bytes untouched.
48 memset(this, 0, sizeof(*this));
49 }
50
51 Header::Header() {
52 // Make hashing repeatable: leave no padding bytes untouched.
53 memset(this, 0, sizeof(*this));
54 }
55
56 EntryMetadata::EntryMetadata() {
57 // Make hashing repeatable: leave no padding bytes untouched.
58 memset(this, 0, sizeof(*this));
59 }
60
61 EntryMetadata::EntryMetadata(uint64 hash_key_p,
62 base::Time last_used_time_p,
63 uint64 entry_size_p) {
64 // Make hashing repeatable: leave no padding bytes untouched.
65 memset(this, 0, sizeof(*this));
66
67 // Proceed with field initializations.
68 hash_key = hash_key_p;
69 entry_size = entry_size_p;
70 last_used_time = last_used_time_p.ToInternalValue();
71 }
72
73 uint64 EntryMetadata::GetHashKey() const {
74 return hash_key;
75 }
76
77 base::Time EntryMetadata::GetLastUsedTime() const {
78 return base::Time::FromInternalValue(last_used_time);
79 }
80
81 void EntryMetadata::SetLastUsedTime(const base::Time& last_used_time_p) {
82 last_used_time = last_used_time_p.ToInternalValue();
83 }
84
85 // static
86 void EntryMetadata::Serialize(const EntryMetadata& in_entry_metadata,
87 std::string* out_buffer) {
88 DCHECK(out_buffer);
89 // TODO(felipeg): We may choose to, instead, serialize each struct member
90 // separately.
91 out_buffer->append(reinterpret_cast<const char*>(&in_entry_metadata),
92 kEntryMetadataSize);
93 }
94
95 // static
96 void EntryMetadata::DeSerialize(const char* in_buffer,
97 EntryMetadata* out_entry_metadata) {
98 DCHECK(in_buffer);
99 DCHECK(out_entry_metadata);
100 memcpy(out_entry_metadata, in_buffer, kEntryMetadataSize);
101 }
102
103 // static
104 void EntryMetadata::Merge(const EntryMetadata& from,
105 EntryMetadata* to) {
106 if (to->last_used_time == 0)
107 to->last_used_time = from.last_used_time;
108 if (to->entry_size == 0)
109 to->entry_size = from.entry_size;
110 }
111
112 } // namespace SimpleIndexFile
113
114 } // namespace disk_cache 42 } // namespace disk_cache
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