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Side by Side Diff: chrome/browser/sync_file_system/local/local_file_sync_status.h

Issue 442383002: Move storage-related files from webkit/ to new top-level directory storage/ (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: . Created 6 years, 4 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved. 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 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 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_ 5 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_
6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_ 6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_
7 7
8 #include <map> 8 #include <map>
9 #include <set> 9 #include <set>
10 10
11 #include "base/basictypes.h" 11 #include "base/basictypes.h"
12 #include "base/compiler_specific.h" 12 #include "base/compiler_specific.h"
13 #include "base/gtest_prod_util.h" 13 #include "base/gtest_prod_util.h"
14 #include "base/observer_list.h" 14 #include "base/observer_list.h"
15 #include "base/threading/non_thread_safe.h" 15 #include "base/threading/non_thread_safe.h"
16 #include "webkit/browser/fileapi/file_system_url.h" 16 #include "storage/browser/fileapi/file_system_url.h"
17 17
18 namespace fileapi { 18 namespace storage {
19 class FileSystemURL; 19 class FileSystemURL;
20 } 20 }
21 21
22 namespace sync_file_system { 22 namespace sync_file_system {
23 23
24 // Represents local file sync status. 24 // Represents local file sync status.
25 // This class is supposed to run only on IO thread. 25 // This class is supposed to run only on IO thread.
26 // 26 //
27 // This class manages two important synchronization flags: writing (counter) 27 // This class manages two important synchronization flags: writing (counter)
28 // and syncing (flag). Writing counter keeps track of which URL is in 28 // and syncing (flag). Writing counter keeps track of which URL is in
29 // writing and syncing flag indicates which URL is in syncing. 29 // writing and syncing flag indicates which URL is in syncing.
30 // 30 //
31 // An entry can have multiple writers but sync is exclusive and cannot overwrap 31 // An entry can have multiple writers but sync is exclusive and cannot overwrap
32 // with any writes or syncs. 32 // with any writes or syncs.
33 class LocalFileSyncStatus 33 class LocalFileSyncStatus
34 : public base::NonThreadSafe { 34 : public base::NonThreadSafe {
35 public: 35 public:
36 typedef std::pair<GURL, fileapi::FileSystemType> OriginAndType; 36 typedef std::pair<GURL, storage::FileSystemType> OriginAndType;
37 37
38 class Observer { 38 class Observer {
39 public: 39 public:
40 Observer() {} 40 Observer() {}
41 virtual ~Observer() {} 41 virtual ~Observer() {}
42 virtual void OnSyncEnabled(const fileapi::FileSystemURL& url) = 0; 42 virtual void OnSyncEnabled(const storage::FileSystemURL& url) = 0;
43 virtual void OnWriteEnabled(const fileapi::FileSystemURL& url) = 0; 43 virtual void OnWriteEnabled(const storage::FileSystemURL& url) = 0;
44
44 private: 45 private:
45 DISALLOW_COPY_AND_ASSIGN(Observer); 46 DISALLOW_COPY_AND_ASSIGN(Observer);
46 }; 47 };
47 48
48 LocalFileSyncStatus(); 49 LocalFileSyncStatus();
49 ~LocalFileSyncStatus(); 50 ~LocalFileSyncStatus();
50 51
51 // Increment writing counter for |url|. 52 // Increment writing counter for |url|.
52 // This should not be called if the |url| is not writable. 53 // This should not be called if the |url| is not writable.
53 void StartWriting(const fileapi::FileSystemURL& url); 54 void StartWriting(const storage::FileSystemURL& url);
54 55
55 // Decrement writing counter for |url|. 56 // Decrement writing counter for |url|.
56 void EndWriting(const fileapi::FileSystemURL& url); 57 void EndWriting(const storage::FileSystemURL& url);
57 58
58 // Start syncing for |url| and disable writing. 59 // Start syncing for |url| and disable writing.
59 // This should not be called if |url| is in syncing or in writing. 60 // This should not be called if |url| is in syncing or in writing.
60 void StartSyncing(const fileapi::FileSystemURL& url); 61 void StartSyncing(const storage::FileSystemURL& url);
61 62
62 // Clears the syncing flag for |url| and enable writing. 63 // Clears the syncing flag for |url| and enable writing.
63 void EndSyncing(const fileapi::FileSystemURL& url); 64 void EndSyncing(const storage::FileSystemURL& url);
64 65
65 // Returns true if the |url| or its parent or child is in writing. 66 // Returns true if the |url| or its parent or child is in writing.
66 bool IsWriting(const fileapi::FileSystemURL& url) const; 67 bool IsWriting(const storage::FileSystemURL& url) const;
67 68
68 // Returns true if the |url| is enabled for writing (i.e. not in syncing). 69 // Returns true if the |url| is enabled for writing (i.e. not in syncing).
69 bool IsWritable(const fileapi::FileSystemURL& url) const; 70 bool IsWritable(const storage::FileSystemURL& url) const;
70 71
71 // Returns true if the |url| is enabled for syncing (i.e. neither in 72 // Returns true if the |url| is enabled for syncing (i.e. neither in
72 // syncing nor writing). 73 // syncing nor writing).
73 bool IsSyncable(const fileapi::FileSystemURL& url) const; 74 bool IsSyncable(const storage::FileSystemURL& url) const;
74 75
75 void AddObserver(Observer* observer); 76 void AddObserver(Observer* observer);
76 void RemoveObserver(Observer* observer); 77 void RemoveObserver(Observer* observer);
77 78
78 private: 79 private:
79 FRIEND_TEST_ALL_PREFIXES(LocalFileSyncStatusTest, WritingOnPathsWithPeriod); 80 FRIEND_TEST_ALL_PREFIXES(LocalFileSyncStatusTest, WritingOnPathsWithPeriod);
80 FRIEND_TEST_ALL_PREFIXES(LocalFileSyncStatusTest, SyncingOnPathsWithPeriod); 81 FRIEND_TEST_ALL_PREFIXES(LocalFileSyncStatusTest, SyncingOnPathsWithPeriod);
81 82
82 typedef std::set<base::FilePath> PathSet; 83 typedef std::set<base::FilePath> PathSet;
83 typedef std::map<OriginAndType, PathSet> URLSet; 84 typedef std::map<OriginAndType, PathSet> URLSet;
84 85
85 typedef std::map<base::FilePath, int64> PathBucket; 86 typedef std::map<base::FilePath, int64> PathBucket;
86 typedef std::map<OriginAndType, PathBucket> URLBucket; 87 typedef std::map<OriginAndType, PathBucket> URLBucket;
87 88
88 bool IsChildOrParentWriting(const fileapi::FileSystemURL& url) const; 89 bool IsChildOrParentWriting(const storage::FileSystemURL& url) const;
89 bool IsChildOrParentSyncing(const fileapi::FileSystemURL& url) const; 90 bool IsChildOrParentSyncing(const storage::FileSystemURL& url) const;
90 91
91 // If this count is non-zero positive there're ongoing write operations. 92 // If this count is non-zero positive there're ongoing write operations.
92 URLBucket writing_; 93 URLBucket writing_;
93 94
94 // If this flag is set sync process is running on the file. 95 // If this flag is set sync process is running on the file.
95 URLSet syncing_; 96 URLSet syncing_;
96 97
97 ObserverList<Observer> observer_list_; 98 ObserverList<Observer> observer_list_;
98 99
99 DISALLOW_COPY_AND_ASSIGN(LocalFileSyncStatus); 100 DISALLOW_COPY_AND_ASSIGN(LocalFileSyncStatus);
100 }; 101 };
101 102
102 } // namespace sync_file_system 103 } // namespace sync_file_system
103 104
104 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_ 105 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_LOCAL_FILE_SYNC_STATUS_H_
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