Add the IndexedDBActiveBlobRegistry, currently unused, to enable future blob

content/browser/indexed_db/indexed_db_factory.cc

 // 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.
 
 #include "content/browser/indexed_db/indexed_db_factory.h"
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "content/browser/indexed_db/indexed_db_backing_store.h"
@@ skipping 42 matching lines @@
   RemoveDatabaseFromMaps(identifier);
 
   // No grace period on a forced-close, as the initiator is
   // assuming the backing store will be released once all
   // connections are closed.
   ReleaseBackingStore(identifier.first, forcedClose);
 }
 
 void IndexedDBFactory::ReleaseBackingStore(const GURL& origin_url,
                                            bool immediate) {
+  if (immediate) {
+    IndexedDBBackingStoreMap::iterator it =
+        backing_stores_with_active_blobs_.find(origin_url);
+    if (it != backing_stores_with_active_blobs_.end()) {
+      it->second->active_blob_registry()->ForceShutdown();
+      backing_stores_with_active_blobs_.erase(it);
+    }
+  }
+
   // Only close if this is the last reference.
   if (!HasLastBackingStoreReference(origin_url))
     return;
 
   // If this factory does hold the last reference to the backing store, it can
   // be closed - but unless requested to close it immediately, keep it around
   // for a short period so that a re-open is fast.
   if (immediate) {
     CloseBackingStore(origin_url);
     return;
@@ skipping 54 matching lines @@
 void IndexedDBFactory::ContextDestroyed() {
   // Timers on backing stores hold a reference to this factory. When the
   // context (which nominally owns this factory) is destroyed during thread
   // termination the timers must be stopped so that this factory and the
   // stores can be disposed of.
   for (IndexedDBBackingStoreMap::iterator it = backing_store_map_.begin();
        it != backing_store_map_.end();
        ++it)
     it->second->close_timer()->Stop();
   backing_store_map_.clear();
+  backing_stores_with_active_blobs_.clear();
   context_ = NULL;
 }
 
+void IndexedDBFactory::ReportOutstandingBlobs(const GURL& origin_url,
+                                              bool blobs_outstanding) {
+  if (!context_)
+    return;
+  if (blobs_outstanding) {
+    DCHECK(!backing_stores_with_active_blobs_.count(origin_url));
+    IndexedDBBackingStoreMap::iterator it = backing_store_map_.find(origin_url);
+    if (it != backing_store_map_.end())
+      backing_stores_with_active_blobs_.insert(*it);
+    else
+      DCHECK(false);
+  } else {
+    IndexedDBBackingStoreMap::iterator it =
+        backing_stores_with_active_blobs_.find(origin_url);
+    if (it != backing_stores_with_active_blobs_.end()) {
+      backing_stores_with_active_blobs_.erase(it);
+      ReleaseBackingStore(origin_url, false /* immediate */);
+    }
+  }
+}
+
 void IndexedDBFactory::GetDatabaseNames(
     scoped_refptr<IndexedDBCallbacks> callbacks,
     const GURL& origin_url,
     const base::FilePath& data_directory) {
   IDB_TRACE("IndexedDBFactory::GetDatabaseNames");
   // TODO(dgrogan): Plumb data_loss back to script eventually?
   blink::WebIDBDataLoss data_loss;
   std::string data_loss_message;
   bool disk_full;
   scoped_refptr<IndexedDBBackingStore> backing_store =
@@ skipping 131 matching lines @@
   const bool open_in_memory = data_directory.empty();
 
   IndexedDBBackingStoreMap::iterator it2 = backing_store_map_.find(origin_url);
   if (it2 != backing_store_map_.end()) {
     it2->second->close_timer()->Stop();
     return it2->second;
   }
 
   scoped_refptr<IndexedDBBackingStore> backing_store;
   if (open_in_memory) {
-    backing_store = IndexedDBBackingStore::OpenInMemory(origin_url);
+    backing_store =
+        IndexedDBBackingStore::OpenInMemory(origin_url, context_->TaskRunner());
   } else {
-    backing_store = IndexedDBBackingStore::Open(origin_url,
+    backing_store = IndexedDBBackingStore::Open(this,
+                                                origin_url,
                                                 data_directory,
                                                 data_loss,
                                                 data_loss_message,
-                                                disk_full);
+                                                disk_full,
+                                                context_->TaskRunner());
   }
 
   if (backing_store.get()) {
     backing_store_map_[origin_url] = backing_store;
     // If an in-memory database, bind lifetime to this factory instance.
     if (open_in_memory)
       session_only_backing_stores_.insert(backing_store);
 
     // All backing stores associated with this factory should be of the same
     // type.
@@ skipping 76 matching lines @@
 
   std::pair<OriginDBMapIterator, OriginDBMapIterator> range =
       GetOpenDatabasesForOrigin(origin_url);
   for (OriginDBMapIterator it = range.first; it != range.second; ++it)
     count += it->second->ConnectionCount();
 
   return count;
 }
 
 }  // namespace content