| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_RENDERER_INDEXED_DB_INDEXED_DB_DISPATCHER_H_ |
| #define CONTENT_RENDERER_INDEXED_DB_INDEXED_DB_DISPATCHER_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "base/strings/nullable_string16.h" |
| #include "content/common/content_export.h" |
| #include "content/common/indexed_db/indexed_db_constants.h" |
| #include "content/public/renderer/worker_thread.h" |
| #include "content/renderer/indexed_db/indexed_db_callbacks_impl.h" |
| #include "content/renderer/indexed_db/indexed_db_database_callbacks_impl.h" |
| #include "ipc/ipc_sync_message_filter.h" |
| #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBCallbacks.h" |
| #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBTypes.h" |
| #include "url/origin.h" |
| |
| namespace content { |
| class WebIDBCursorImpl; |
| |
| // Handle the indexed db related communication for this context thread - the |
| // main thread and each worker thread have their own copies. |
| class CONTENT_EXPORT IndexedDBDispatcher : public WorkerThread::Observer { |
| public: |
| // Constructor made public to allow RenderThreadImpl to own a copy without |
| // failing a NOTREACHED in ThreadSpecificInstance in tests that instantiate |
| // two copies of RenderThreadImpl on the same thread. Everyone else probably |
| // wants to use ThreadSpecificInstance(). |
| IndexedDBDispatcher(); |
| ~IndexedDBDispatcher() override; |
| |
| static IndexedDBDispatcher* ThreadSpecificInstance(); |
| |
| // WorkerThread::Observer implementation. |
| void WillStopCurrentWorkerThread() override; |
| |
| void RegisterCursor(WebIDBCursorImpl* cursor); |
| void UnregisterCursor(WebIDBCursorImpl* cursor); |
| // Reset cursor prefetch caches for all cursors except exception_cursor. |
| void ResetCursorPrefetchCaches(int64_t transaction_id, |
| WebIDBCursorImpl* exception_cursor); |
| |
| void RegisterMojoOwnedCallbacks( |
| IndexedDBCallbacksImpl::InternalState* callback_state); |
| void UnregisterMojoOwnedCallbacks( |
| IndexedDBCallbacksImpl::InternalState* callback_state); |
| void RegisterMojoOwnedDatabaseCallbacks( |
| blink::WebIDBDatabaseCallbacks* callback_state); |
| void UnregisterMojoOwnedDatabaseCallbacks( |
| blink::WebIDBDatabaseCallbacks* callback_state); |
| |
| private: |
| FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorReset); |
| FRIEND_TEST_ALL_PREFIXES(IndexedDBDispatcherTest, CursorTransactionId); |
| |
| // Looking up move-only entries in an std::unordered_set and removing them |
| // with out freeing them seems to be impossible so use a map instead so that |
| // the key type can remain a raw pointer. |
| using CallbackStateSet = std::unordered_map< |
| IndexedDBCallbacksImpl::InternalState*, |
| std::unique_ptr<IndexedDBCallbacksImpl::InternalState>>; |
| using DatabaseCallbackStateSet = |
| std::unordered_map<blink::WebIDBDatabaseCallbacks*, |
| std::unique_ptr<blink::WebIDBDatabaseCallbacks>>; |
| |
| std::unordered_set<WebIDBCursorImpl*> cursors_; |
| |
| // Holds pointers to the worker-thread owned state of IndexedDBCallbacksImpl |
| // and IndexedDBDatabaseCallbacksImpl objects to makes sure that it is |
| // destroyed on thread exit if the Mojo pipe is not yet closed. Otherwise the |
| // object will leak because the thread's task runner is no longer executing |
| // tasks. |
| CallbackStateSet mojo_owned_callback_state_; |
| DatabaseCallbackStateSet mojo_owned_database_callback_state_; |
| bool in_destructor_ = false; |
| |
| DISALLOW_COPY_AND_ASSIGN(IndexedDBDispatcher); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_INDEXED_DB_INDEXED_DB_DISPATCHER_H_ |