1 files changed, 103 insertions, 0 deletions
diff --git a/dom/indexedDB/FileInfo.h b/dom/indexedDB/FileInfo.h
new file mode 100644
index 000000000..e228d4ad7
--- /dev/null
+++ b/dom/indexedDB/FileInfo.h
@@ -0,0 +1,103 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_indexeddb_fileinfo_h__
+#define mozilla_dom_indexeddb_fileinfo_h__
+
+#include "nsISupportsImpl.h"
+
+namespace mozilla {
+namespace dom {
+namespace indexedDB {
+
+class FileManager;
+
+class FileInfo
+{
+  friend class FileManager;
+
+  ThreadSafeAutoRefCnt mRefCnt;
+  ThreadSafeAutoRefCnt mDBRefCnt;
+  ThreadSafeAutoRefCnt mSliceRefCnt;
+
+  RefPtr<FileManager> mFileManager;
+
+public:
+  class CustomCleanupCallback;
+
+  static
+  FileInfo* Create(FileManager* aFileManager, int64_t aId);
+
+  explicit FileInfo(FileManager* aFileManager);
+
+  void
+  AddRef()
+  {
+    UpdateReferences(mRefCnt, 1);
+  }
+
+  void
+  Release(CustomCleanupCallback* aCustomCleanupCallback = nullptr)
+  {
+    UpdateReferences(mRefCnt, -1, aCustomCleanupCallback);
+  }
+
+  void
+  UpdateDBRefs(int32_t aDelta)
+  {
+    UpdateReferences(mDBRefCnt, aDelta);
+  }
+
+  void
+  UpdateSliceRefs(int32_t aDelta)
+  {
+    UpdateReferences(mSliceRefCnt, aDelta);
+  }
+
+  void
+  GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt, int32_t* aSliceRefCnt);
+
+  FileManager*
+  Manager() const
+  {
+    return mFileManager;
+  }
+
+  virtual int64_t
+  Id() const = 0;
+
+protected:
+  virtual ~FileInfo();
+
+private:
+  void
+  UpdateReferences(ThreadSafeAutoRefCnt& aRefCount,
+                   int32_t aDelta,
+                   CustomCleanupCallback* aCustomCleanupCallback = nullptr);
+
+  bool
+  LockedClearDBRefs();
+
+  void
+  Cleanup();
+};
+
+class NS_NO_VTABLE FileInfo::CustomCleanupCallback
+{
+public:
+  virtual nsresult
+  Cleanup(FileManager* aFileManager, int64_t aId) = 0;
+
+protected:
+  CustomCleanupCallback()
+  { }
+};
+
+} // namespace indexedDB
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_indexeddb_fileinfo_h__