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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 #ifndef WEBKIT_COMMON_DATABASE_DATABASE_CONNECTIONS_H_ | 5 #ifndef WEBKIT_COMMON_DATABASE_DATABASE_CONNECTIONS_H_ |
6 #define WEBKIT_COMMON_DATABASE_DATABASE_CONNECTIONS_H_ | 6 #define WEBKIT_COMMON_DATABASE_DATABASE_CONNECTIONS_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
13 #include "base/strings/string16.h" | 13 #include "base/strings/string16.h" |
14 #include "base/synchronization/lock.h" | 14 #include "base/synchronization/lock.h" |
15 #include "webkit/common/webkit_storage_common_export.h" | 15 #include "storage/common/storage_export.h" |
16 | 16 |
17 namespace base { | 17 namespace base { |
18 class MessageLoopProxy; | 18 class MessageLoopProxy; |
19 } | 19 } |
20 | 20 |
21 namespace webkit_database { | 21 namespace webkit_database { |
22 | 22 |
23 class WEBKIT_STORAGE_COMMON_EXPORT DatabaseConnections { | 23 class STORAGE_EXPORT DatabaseConnections { |
24 public: | 24 public: |
25 DatabaseConnections(); | 25 DatabaseConnections(); |
26 ~DatabaseConnections(); | 26 ~DatabaseConnections(); |
27 | 27 |
28 bool IsEmpty() const; | 28 bool IsEmpty() const; |
29 bool IsDatabaseOpened(const std::string& origin_identifier, | 29 bool IsDatabaseOpened(const std::string& origin_identifier, |
30 const base::string16& database_name) const; | 30 const base::string16& database_name) const; |
31 bool IsOriginUsed(const std::string& origin_identifier) const; | 31 bool IsOriginUsed(const std::string& origin_identifier) const; |
32 | 32 |
33 // Returns true if this is the first connection. | 33 // Returns true if this is the first connection. |
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45 | 45 |
46 // Database sizes can be kept only if IsDatabaseOpened returns true. | 46 // Database sizes can be kept only if IsDatabaseOpened returns true. |
47 int64 GetOpenDatabaseSize(const std::string& origin_identifier, | 47 int64 GetOpenDatabaseSize(const std::string& origin_identifier, |
48 const base::string16& database_name) const; | 48 const base::string16& database_name) const; |
49 void SetOpenDatabaseSize(const std::string& origin_identifier, | 49 void SetOpenDatabaseSize(const std::string& origin_identifier, |
50 const base::string16& database_name, | 50 const base::string16& database_name, |
51 int64 size); | 51 int64 size); |
52 | 52 |
53 // Returns a list of the connections, <origin_id, name>. | 53 // Returns a list of the connections, <origin_id, name>. |
54 void ListConnections( | 54 void ListConnections( |
55 std::vector<std::pair<std::string, base::string16> > *list) const; | 55 std::vector<std::pair<std::string, base::string16> >* list) const; |
56 | 56 |
57 private: | 57 private: |
58 // Mapping from name to <openCount, size> | 58 // Mapping from name to <openCount, size> |
59 typedef std::map<base::string16, std::pair<int, int64> > DBConnections; | 59 typedef std::map<base::string16, std::pair<int, int64> > DBConnections; |
60 typedef std::map<std::string, DBConnections> OriginConnections; | 60 typedef std::map<std::string, DBConnections> OriginConnections; |
61 mutable OriginConnections connections_; // mutable for GetOpenDatabaseSize | 61 mutable OriginConnections connections_; // mutable for GetOpenDatabaseSize |
62 | 62 |
63 // Returns true if the last connection was removed. | 63 // Returns true if the last connection was removed. |
64 bool RemoveConnectionsHelper(const std::string& origin_identifier, | 64 bool RemoveConnectionsHelper(const std::string& origin_identifier, |
65 const base::string16& database_name, | 65 const base::string16& database_name, |
66 int num_connections); | 66 int num_connections); |
67 }; | 67 }; |
68 | 68 |
69 // A wrapper class that provides thread-safety and the | 69 // A wrapper class that provides thread-safety and the |
70 // ability to wait until all connections have closed. | 70 // ability to wait until all connections have closed. |
71 // Intended for use in renderer processes. | 71 // Intended for use in renderer processes. |
72 class WEBKIT_STORAGE_COMMON_EXPORT DatabaseConnectionsWrapper | 72 class STORAGE_EXPORT DatabaseConnectionsWrapper |
73 : public base::RefCountedThreadSafe<DatabaseConnectionsWrapper> { | 73 : public base::RefCountedThreadSafe<DatabaseConnectionsWrapper> { |
74 public: | 74 public: |
75 DatabaseConnectionsWrapper(); | 75 DatabaseConnectionsWrapper(); |
76 | 76 |
77 // The Wait and Has methods should only be called on the | 77 // The Wait and Has methods should only be called on the |
78 // main thread (the thread on which the wrapper is constructed). | 78 // main thread (the thread on which the wrapper is constructed). |
79 void WaitForAllDatabasesToClose(); | 79 void WaitForAllDatabasesToClose(); |
80 bool HasOpenConnections(); | 80 bool HasOpenConnections(); |
81 | 81 |
82 // Add and Remove may be called on any thread. | 82 // Add and Remove may be called on any thread. |
83 void AddOpenConnection(const std::string& origin_identifier, | 83 void AddOpenConnection(const std::string& origin_identifier, |
84 const base::string16& database_name); | 84 const base::string16& database_name); |
85 void RemoveOpenConnection(const std::string& origin_identifier, | 85 void RemoveOpenConnection(const std::string& origin_identifier, |
86 const base::string16& database_name); | 86 const base::string16& database_name); |
| 87 |
87 private: | 88 private: |
88 ~DatabaseConnectionsWrapper(); | 89 ~DatabaseConnectionsWrapper(); |
89 friend class base::RefCountedThreadSafe<DatabaseConnectionsWrapper>; | 90 friend class base::RefCountedThreadSafe<DatabaseConnectionsWrapper>; |
90 | 91 |
91 bool waiting_for_dbs_to_close_; | 92 bool waiting_for_dbs_to_close_; |
92 base::Lock open_connections_lock_; | 93 base::Lock open_connections_lock_; |
93 DatabaseConnections open_connections_; | 94 DatabaseConnections open_connections_; |
94 scoped_refptr<base::MessageLoopProxy> main_thread_; | 95 scoped_refptr<base::MessageLoopProxy> main_thread_; |
95 }; | 96 }; |
96 | 97 |
97 } // namespace webkit_database | 98 } // namespace webkit_database |
98 | 99 |
99 #endif // WEBKIT_COMMON_DATABASE_DATABASE_CONNECTIONS_H_ | 100 #endif // WEBKIT_COMMON_DATABASE_DATABASE_CONNECTIONS_H_ |
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