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 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DISPATCHER_HOST_H_ 6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DISPATCHER_HOST_H_ 7 8 #include <map> 9 #include <vector> 10 11 #include "base/basictypes.h" 12 #include "base/id_map.h" 13 #include "base/memory/ref_counted.h" 14 #include "content/public/browser/browser_message_filter.h" 15 16 class GURL; 17 struct IndexedDBDatabaseMetadata; 18 struct IndexedDBHostMsg_DatabaseCount_Params; 19 struct IndexedDBHostMsg_DatabaseCreateIndex_Params; 20 struct IndexedDBHostMsg_DatabaseCreateObjectStore_Params; 21 struct IndexedDBHostMsg_DatabaseCreateTransaction_Params; 22 struct IndexedDBHostMsg_DatabaseDeleteRange_Params; 23 struct IndexedDBHostMsg_DatabaseGet_Params; 24 struct IndexedDBHostMsg_DatabaseOpenCursor_Params; 25 struct IndexedDBHostMsg_DatabasePut_Params; 26 struct IndexedDBHostMsg_DatabaseSetIndexKeys_Params; 27 struct IndexedDBHostMsg_FactoryDeleteDatabase_Params; 28 struct IndexedDBHostMsg_FactoryGetDatabaseNames_Params; 29 struct IndexedDBHostMsg_FactoryOpen_Params; 30 31 namespace content { 32 class IndexedDBConnection; 33 class IndexedDBContextImpl; 34 class IndexedDBCursor; 35 class IndexedDBKey; 36 class IndexedDBKeyPath; 37 class IndexedDBKeyRange; 38 struct IndexedDBDatabaseMetadata; 39 40 // Handles all IndexedDB related messages from a particular renderer process. 41 class IndexedDBDispatcherHost : public BrowserMessageFilter { 42 public: 43 // Only call the constructor from the UI thread. 44 IndexedDBDispatcherHost(int ipc_process_id, 45 IndexedDBContextImpl* indexed_db_context); 46 47 static ::IndexedDBDatabaseMetadata ConvertMetadata( 48 const content::IndexedDBDatabaseMetadata& metadata); 49 50 // BrowserMessageFilter implementation. 51 virtual void OnChannelClosing() OVERRIDE; 52 virtual void OnDestruct() const OVERRIDE; 53 virtual base::TaskRunner* OverrideTaskRunnerForMessage( 54 const IPC::Message& message) OVERRIDE; 55 virtual bool OnMessageReceived(const IPC::Message& message, 56 bool* message_was_ok) OVERRIDE; 57 58 void FinishTransaction(int64 host_transaction_id, bool committed); 59 60 // A shortcut for accessing our context. 61 IndexedDBContextImpl* Context() { return indexed_db_context_; } 62 63 // IndexedDBCallbacks call these methods to add the results into the 64 // applicable map. See below for more details. 65 int32 Add(IndexedDBCursor* cursor); 66 int32 Add(IndexedDBConnection* connection, 67 int32 ipc_thread_id, 68 const GURL& origin_url); 69 70 void RegisterTransactionId(int64 host_transaction_id, const GURL& origin_url); 71 72 IndexedDBCursor* GetCursorFromId(int32 ipc_cursor_id); 73 74 int64 HostTransactionId(int64 transaction_id); 75 int64 RendererTransactionId(int64 host_transaction_id); 76 77 private: 78 // Friends to enable OnDestruct() delegation. 79 friend class BrowserThread; 80 friend class base::DeleteHelper<IndexedDBDispatcherHost>; 81 82 virtual ~IndexedDBDispatcherHost(); 83 84 // Message processing. Most of the work is delegated to the dispatcher hosts 85 // below. 86 void OnIDBFactoryGetDatabaseNames( 87 const IndexedDBHostMsg_FactoryGetDatabaseNames_Params& p); 88 void OnIDBFactoryOpen(const IndexedDBHostMsg_FactoryOpen_Params& p); 89 90 void OnIDBFactoryDeleteDatabase( 91 const IndexedDBHostMsg_FactoryDeleteDatabase_Params& p); 92 93 void ResetDispatcherHosts(); 94 95 // IDMap for RefCounted types 96 template <typename RefCountedType> 97 class RefIDMap { 98 private: 99 typedef int32 KeyType; 100 101 public: 102 RefIDMap() {} 103 ~RefIDMap() {} 104 105 KeyType Add(RefCountedType* data) { 106 return map_.Add(new scoped_refptr<RefCountedType>(data)); 107 } 108 109 RefCountedType* Lookup(KeyType id) { 110 scoped_refptr<RefCountedType>* ptr = map_.Lookup(id); 111 if (ptr == NULL) 112 return NULL; 113 return ptr->get(); 114 } 115 116 void Remove(KeyType id) { map_.Remove(id); } 117 118 void set_check_on_null_data(bool value) { 119 map_.set_check_on_null_data(value); 120 } 121 122 private: 123 IDMap<scoped_refptr<RefCountedType>, IDMapOwnPointer> map_; 124 }; 125 126 // Helper templates. 127 template <class ReturnType> 128 ReturnType* GetOrTerminateProcess(IDMap<ReturnType, IDMapOwnPointer>* map, 129 int32 ipc_return_object_id); 130 template <class ReturnType> 131 ReturnType* GetOrTerminateProcess(RefIDMap<ReturnType>* map, 132 int32 ipc_return_object_id); 133 134 template <typename MapType> 135 void DestroyObject(MapType* map, int32 ipc_object_id); 136 137 // Used in nested classes. 138 typedef std::map<int32, GURL> WebIDBObjectIDToURLMap; 139 140 typedef std::map<int64, GURL> TransactionIDToURLMap; 141 typedef std::map<int64, uint64> TransactionIDToSizeMap; 142 typedef std::map<int64, int64> TransactionIDToDatabaseIDMap; 143 144 class DatabaseDispatcherHost { 145 public: 146 explicit DatabaseDispatcherHost(IndexedDBDispatcherHost* parent); 147 ~DatabaseDispatcherHost(); 148 149 void CloseAll(); 150 bool OnMessageReceived(const IPC::Message& message, bool* msg_is_ok); 151 void Send(IPC::Message* message); 152 153 void OnCreateObjectStore( 154 const IndexedDBHostMsg_DatabaseCreateObjectStore_Params& params); 155 void OnDeleteObjectStore(int32 ipc_database_id, 156 int64 transaction_id, 157 int64 object_store_id); 158 void OnCreateTransaction( 159 const IndexedDBHostMsg_DatabaseCreateTransaction_Params&); 160 void OnOpen(int32 ipc_database_id, 161 int32 ipc_thread_id, 162 int32 ipc_callbacks_id); 163 void OnClose(int32 ipc_database_id); 164 void OnDestroyed(int32 ipc_database_id); 165 166 void OnGet(const IndexedDBHostMsg_DatabaseGet_Params& params); 167 void OnPut(const IndexedDBHostMsg_DatabasePut_Params& params); 168 void OnSetIndexKeys( 169 const IndexedDBHostMsg_DatabaseSetIndexKeys_Params& params); 170 void OnSetIndexesReady(int32 ipc_database_id, 171 int64 transaction_id, 172 int64 object_store_id, 173 const std::vector<int64>& ids); 174 void OnOpenCursor(const IndexedDBHostMsg_DatabaseOpenCursor_Params& params); 175 void OnCount(const IndexedDBHostMsg_DatabaseCount_Params& params); 176 void OnDeleteRange( 177 const IndexedDBHostMsg_DatabaseDeleteRange_Params& params); 178 void OnClear(int32 ipc_thread_id, 179 int32 ipc_callbacks_id, 180 int32 ipc_database_id, 181 int64 transaction_id, 182 int64 object_store_id); 183 void OnCreateIndex( 184 const IndexedDBHostMsg_DatabaseCreateIndex_Params& params); 185 void OnDeleteIndex(int32 ipc_database_id, 186 int64 transaction_id, 187 int64 object_store_id, 188 int64 index_id); 189 190 void OnAbort(int32 ipc_database_id, int64 transaction_id); 191 void OnCommit(int32 ipc_database_id, int64 transaction_id); 192 IndexedDBDispatcherHost* parent_; 193 IDMap<IndexedDBConnection, IDMapOwnPointer> map_; 194 WebIDBObjectIDToURLMap database_url_map_; 195 TransactionIDToSizeMap transaction_size_map_; 196 TransactionIDToURLMap transaction_url_map_; 197 TransactionIDToDatabaseIDMap transaction_database_map_; 198 }; 199 200 class CursorDispatcherHost { 201 public: 202 explicit CursorDispatcherHost(IndexedDBDispatcherHost* parent); 203 ~CursorDispatcherHost(); 204 205 bool OnMessageReceived(const IPC::Message& message, bool* msg_is_ok); 206 void Send(IPC::Message* message); 207 208 void OnAdvance(int32 ipc_object_store_id, 209 int32 ipc_thread_id, 210 int32 ipc_callbacks_id, 211 unsigned long count); 212 void OnContinue(int32 ipc_object_store_id, 213 int32 ipc_thread_id, 214 int32 ipc_callbacks_id, 215 const IndexedDBKey& key); 216 void OnPrefetch(int32 ipc_cursor_id, 217 int32 ipc_thread_id, 218 int32 ipc_callbacks_id, 219 int n); 220 void OnPrefetchReset(int32 ipc_cursor_id, 221 int used_prefetches, 222 int unused_prefetches); 223 void OnDestroyed(int32 ipc_cursor_id); 224 225 IndexedDBDispatcherHost* parent_; 226 RefIDMap<IndexedDBCursor> map_; 227 }; 228 229 scoped_refptr<IndexedDBContextImpl> indexed_db_context_; 230 231 // Only access on IndexedDB thread. 232 scoped_ptr<DatabaseDispatcherHost> database_dispatcher_host_; 233 scoped_ptr<CursorDispatcherHost> cursor_dispatcher_host_; 234 235 // Used to dispatch messages to the correct view host. 236 int ipc_process_id_; 237 238 DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBDispatcherHost); 239 }; 240 241 } // namespace content 242 243 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DISPATCHER_HOST_H_ 244
