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Side by Side Diff: components/history/core/browser/in_memory_history_backend.h

Issue 1548113002: Switch to standard integer types in components/, part 2 of 4. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: gn Created 4 years, 12 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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 InMemoryHistoryBackend is a wrapper around the in-memory URL database. 5 // The InMemoryHistoryBackend is a wrapper around the in-memory URL database.
6 // It maintains an in-memory cache of a subset of history that is required for 6 // It maintains an in-memory cache of a subset of history that is required for
7 // low-latency operations, such as in-line autocomplete. 7 // low-latency operations, such as in-line autocomplete.
8 // 8 //
9 // The in-memory cache provides the following guarantees: 9 // The in-memory cache provides the following guarantees:
10 // (1.) It will always contain URLRows that either have a |typed_count| > 0; or 10 // (1.) It will always contain URLRows that either have a |typed_count| > 0; or
11 // that have a corresponding search term, in which case information about 11 // that have a corresponding search term, in which case information about
12 // the search term is also stored. 12 // the search term is also stored.
13 // (2.) It will be an actual subset, i.e., it will contain verbatim data, and 13 // (2.) It will be an actual subset, i.e., it will contain verbatim data, and
14 // will never contain more data that can be found in the main database. 14 // will never contain more data that can be found in the main database.
15 // 15 //
16 // The InMemoryHistoryBackend is created on the history thread and passed to the 16 // The InMemoryHistoryBackend is created on the history thread and passed to the
17 // main thread where operations can be completed synchronously. It listens for 17 // main thread where operations can be completed synchronously. It listens for
18 // notifications from the "regular" history backend and keeps itself in sync. 18 // notifications from the "regular" history backend and keeps itself in sync.
19 19
20 #ifndef COMPONENTS_HISTORY_CORE_BROWSER_IN_MEMORY_HISTORY_BACKEND_H_ 20 #ifndef COMPONENTS_HISTORY_CORE_BROWSER_IN_MEMORY_HISTORY_BACKEND_H_
21 #define COMPONENTS_HISTORY_CORE_BROWSER_IN_MEMORY_HISTORY_BACKEND_H_ 21 #define COMPONENTS_HISTORY_CORE_BROWSER_IN_MEMORY_HISTORY_BACKEND_H_
22 22
23 #include <string> 23 #include <string>
24 24
25 #include "base/basictypes.h"
26 #include "base/gtest_prod_util.h" 25 #include "base/gtest_prod_util.h"
26 #include "base/macros.h"
27 #include "base/memory/scoped_ptr.h" 27 #include "base/memory/scoped_ptr.h"
28 #include "base/scoped_observer.h" 28 #include "base/scoped_observer.h"
29 #include "components/history/core/browser/history_service_observer.h" 29 #include "components/history/core/browser/history_service_observer.h"
30 #include "components/history/core/browser/keyword_id.h" 30 #include "components/history/core/browser/keyword_id.h"
31 31
32 namespace base { 32 namespace base {
33 class FilePath; 33 class FilePath;
34 } 34 }
35 35
36 namespace history { 36 namespace history {
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97 97
98 ScopedObserver<HistoryService, HistoryServiceObserver> 98 ScopedObserver<HistoryService, HistoryServiceObserver>
99 history_service_observer_; 99 history_service_observer_;
100 100
101 DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend); 101 DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend);
102 }; 102 };
103 103
104 } // namespace history 104 } // namespace history
105 105
106 #endif // COMPONENTS_HISTORY_CORE_BROWSER_IN_MEMORY_HISTORY_BACKEND_H_ 106 #endif // COMPONENTS_HISTORY_CORE_BROWSER_IN_MEMORY_HISTORY_BACKEND_H_
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