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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_DATABASE_DATABASE_CONNECTIONS_H_ | 5 #ifndef WEBKIT_DATABASE_DATABASE_CONNECTIONS_H_ |
| 6 #define WEBKIT_DATABASE_DATABASE_CONNECTIONS_H_ | 6 #define WEBKIT_DATABASE_DATABASE_CONNECTIONS_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
| 12 #include "base/string16.h" | 12 #include "base/string16.h.h" |
| 13 #include "base/synchronization/lock.h" | 13 #include "base/synchronization/lock.h" |
| 14 #include "webkit/storage/webkit_storage_export.h" | 14 #include "webkit/storage/webkit_storage_export.h" |
| 15 | 15 |
| 16 namespace base { | 16 namespace base { |
| 17 class MessageLoopProxy; | 17 class MessageLoopProxy; |
| 18 } | 18 } |
| 19 | 19 |
| 20 namespace webkit_database { | 20 namespace webkit_database { |
| 21 | 21 |
| 22 class WEBKIT_STORAGE_EXPORT DatabaseConnections { | 22 class WEBKIT_STORAGE_EXPORT DatabaseConnections { |
| 23 public: | 23 public: |
| 24 DatabaseConnections(); | 24 DatabaseConnections(); |
| 25 ~DatabaseConnections(); | 25 ~DatabaseConnections(); |
| 26 | 26 |
| 27 bool IsEmpty() const; | 27 bool IsEmpty() const; |
| 28 bool IsDatabaseOpened(const string16& origin_identifier, | 28 bool IsDatabaseOpened(const base::string16& origin_identifier, |
| 29 const string16& database_name) const; | 29 const base::string16& database_name) const; |
| 30 bool IsOriginUsed(const string16& origin_identifier) const; | 30 bool IsOriginUsed(const base::string16& origin_identifier) const; |
| 31 | 31 |
| 32 // Returns true if this is the first connection. | 32 // Returns true if this is the first connection. |
| 33 bool AddConnection(const string16& origin_identifier, | 33 bool AddConnection(const base::string16& origin_identifier, |
| 34 const string16& database_name); | 34 const base::string16& database_name); |
| 35 | 35 |
| 36 // Returns true if the last connection was removed. | 36 // Returns true if the last connection was removed. |
| 37 bool RemoveConnection(const string16& origin_identifier, | 37 bool RemoveConnection(const base::string16& origin_identifier, |
| 38 const string16& database_name); | 38 const base::string16& database_name); |
| 39 | 39 |
| 40 void RemoveAllConnections(); | 40 void RemoveAllConnections(); |
| 41 void RemoveConnections( | 41 void RemoveConnections( |
| 42 const DatabaseConnections& connections, | 42 const DatabaseConnections& connections, |
| 43 std::vector<std::pair<string16, string16> >* closed_dbs); | 43 std::vector<std::pair<base::string16, base::string16> >* closed_dbs); |
| 44 | 44 |
| 45 // Database sizes can be kept only if IsDatabaseOpened returns true. | 45 // Database sizes can be kept only if IsDatabaseOpened returns true. |
| 46 int64 GetOpenDatabaseSize(const string16& origin_identifier, | 46 int64 GetOpenDatabaseSize(const base::string16& origin_identifier, |
| 47 const string16& database_name) const; | 47 const base::string16& database_name) const; |
| 48 void SetOpenDatabaseSize(const string16& origin_identifier, | 48 void SetOpenDatabaseSize(const base::string16& origin_identifier, |
| 49 const string16& database_name, | 49 const base::string16& database_name, |
| 50 int64 size); | 50 int64 size); |
| 51 | 51 |
| 52 // Returns a list of the connections, <origin_id, name>. | 52 // Returns a list of the connections, <origin_id, name>. |
| 53 void ListConnections( | 53 void ListConnections( |
| 54 std::vector<std::pair<string16, string16> > *list) const; | 54 std::vector<std::pair<base::string16, base::string16> > *list) const; |
| 55 | 55 |
| 56 private: | 56 private: |
| 57 // Mapping from name to <openCount, size> | 57 // Mapping from name to <openCount, size> |
| 58 typedef std::map<string16, std::pair<int, int64> > DBConnections; | 58 typedef std::map<base::string16, std::pair<int, int64> > DBConnections; |
| 59 typedef std::map<string16, DBConnections> OriginConnections; | 59 typedef std::map<base::string16, DBConnections> OriginConnections; |
| 60 mutable OriginConnections connections_; // mutable for GetOpenDatabaseSize | 60 mutable OriginConnections connections_; // mutable for GetOpenDatabaseSize |
| 61 | 61 |
| 62 // Returns true if the last connection was removed. | 62 // Returns true if the last connection was removed. |
| 63 bool RemoveConnectionsHelper(const string16& origin_identifier, | 63 bool RemoveConnectionsHelper(const base::string16& origin_identifier, |
| 64 const string16& database_name, | 64 const base::string16& database_name, |
| 65 int num_connections); | 65 int num_connections); |
| 66 }; | 66 }; |
| 67 | 67 |
| 68 // A wrapper class that provides thread-safety and the | 68 // A wrapper class that provides thread-safety and the |
| 69 // ability to wait until all connections have closed. | 69 // ability to wait until all connections have closed. |
| 70 // Intended for use in renderer processes. | 70 // Intended for use in renderer processes. |
| 71 class WEBKIT_STORAGE_EXPORT DatabaseConnectionsWrapper | 71 class WEBKIT_STORAGE_EXPORT DatabaseConnectionsWrapper |
| 72 : public base::RefCountedThreadSafe<DatabaseConnectionsWrapper> { | 72 : public base::RefCountedThreadSafe<DatabaseConnectionsWrapper> { |
| 73 public: | 73 public: |
| 74 DatabaseConnectionsWrapper(); | 74 DatabaseConnectionsWrapper(); |
| 75 | 75 |
| 76 // The Wait and Has methods should only be called on the | 76 // The Wait and Has methods should only be called on the |
| 77 // main thread (the thread on which the wrapper is constructed). | 77 // main thread (the thread on which the wrapper is constructed). |
| 78 void WaitForAllDatabasesToClose(); | 78 void WaitForAllDatabasesToClose(); |
| 79 bool HasOpenConnections(); | 79 bool HasOpenConnections(); |
| 80 | 80 |
| 81 // Add and Remove may be called on any thread. | 81 // Add and Remove may be called on any thread. |
| 82 void AddOpenConnection(const string16& origin_identifier, | 82 void AddOpenConnection(const base::string16& origin_identifier, |
| 83 const string16& database_name); | 83 const base::string16& database_name); |
| 84 void RemoveOpenConnection(const string16& origin_identifier, | 84 void RemoveOpenConnection(const base::string16& origin_identifier, |
| 85 const string16& database_name); | 85 const base::string16& database_name); |
| 86 private: | 86 private: |
| 87 ~DatabaseConnectionsWrapper(); | 87 ~DatabaseConnectionsWrapper(); |
| 88 friend class base::RefCountedThreadSafe<DatabaseConnectionsWrapper>; | 88 friend class base::RefCountedThreadSafe<DatabaseConnectionsWrapper>; |
| 89 | 89 |
| 90 bool waiting_for_dbs_to_close_; | 90 bool waiting_for_dbs_to_close_; |
| 91 base::Lock open_connections_lock_; | 91 base::Lock open_connections_lock_; |
| 92 DatabaseConnections open_connections_; | 92 DatabaseConnections open_connections_; |
| 93 scoped_refptr<base::MessageLoopProxy> main_thread_; | 93 scoped_refptr<base::MessageLoopProxy> main_thread_; |
| 94 }; | 94 }; |
| 95 | 95 |
| 96 } // namespace webkit_database | 96 } // namespace webkit_database |
| 97 | 97 |
| 98 #endif // WEBKIT_DATABASE_DATABASE_CONNECTIONS_H_ | 98 #endif // WEBKIT_DATABASE_DATABASE_CONNECTIONS_H_ |
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