Blob support for IDB [Chromium]

content/browser/indexed_db/indexed_db_transaction.h

 // Copyright (c) 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_BROWSER_INDEXED_DB_INDEXED_DB_TRANSACTION_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_TRANSACTION_H_
 
 #include <queue>
 #include <set>
 #include <stack>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "content/browser/indexed_db/indexed_db_backing_store.h"
 #include "content/browser/indexed_db/indexed_db_database.h"
 #include "content/browser/indexed_db/indexed_db_database_error.h"
 
 namespace content {
 
+class BlobWriteCallbackImpl;
 class IndexedDBCursor;
 class IndexedDBDatabaseCallbacks;
 
 class CONTENT_EXPORT IndexedDBTransaction
     : public NON_EXPORTED_BASE(base::RefCounted<IndexedDBTransaction>) {
  public:
   typedef base::Callback<void(IndexedDBTransaction*)> Operation;
 
   IndexedDBTransaction(
       int64 id,
@@ skipping 27 matching lines @@
   }
   IndexedDBBackingStore::Transaction* BackingStoreTransaction() {
     return transaction_.get();
   }
   int64 id() const { return id_; }
 
   IndexedDBDatabase* database() const { return database_; }
   IndexedDBDatabaseCallbacks* connection() const { return callbacks_; }
 
   enum State {
-    CREATED,   // Created, but not yet started by coordinator.
-    STARTED,   // Started by the coordinator.
-    FINISHED,  // Either aborted or committed.
+    CREATED,     // Created, but not yet started by coordinator.
+    STARTED,     // Started by the coordinator.
+    COMMITTING,  // In the process of committing, possibly waiting for blobs
+                 // to be written.
+    FINISHED,    // Either aborted or committed.
   };
 
   State state() const { return state_; }
   bool IsTimeoutTimerRunning() const { return timeout_timer_.IsRunning(); }
 
   struct Diagnostics {
     base::Time creation_time;
     base::Time start_time;
     int tasks_scheduled;
     int tasks_completed;
   };
 
   const Diagnostics& diagnostics() const { return diagnostics_; }
 
  private:
+  friend class BlobWriteCallbackImpl;
+
   FRIEND_TEST_ALL_PREFIXES(IndexedDBTransactionTestMode, AbortPreemptive);
   FRIEND_TEST_ALL_PREFIXES(IndexedDBTransactionTest, Timeout);
   FRIEND_TEST_ALL_PREFIXES(IndexedDBTransactionTest,
                            SchedulePreemptiveTask);
   FRIEND_TEST_ALL_PREFIXES(IndexedDBTransactionTestMode,
                            ScheduleNormalTask);
 
   friend class base::RefCounted<IndexedDBTransaction>;
   virtual ~IndexedDBTransaction();
 
   void RunTasksIfStarted();
 
   bool IsTaskQueueEmpty() const;
   bool HasPendingTasks() const;
 
+  void BlobWriteComplete(bool success);
   void ProcessTaskQueue();
   void CloseOpenCursors();
+  void CommitPhaseTwo();
   void Timeout();
 
   const int64 id_;
   const std::set<int64> object_store_ids_;
   const indexed_db::TransactionMode mode_;
 
   bool used_;
   State state_;
   bool commit_pending_;
   scoped_refptr<IndexedDBDatabaseCallbacks> callbacks_;
@@ skipping 41 matching lines @@
   // requests are processed before the timer fires, assume the script is
   // unresponsive and abort to unblock the transaction queue.
   base::OneShotTimer<IndexedDBTransaction> timeout_timer_;
 
   Diagnostics diagnostics_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_TRANSACTION_H_