1 files changed, 37 insertions, 0 deletions
diff --git a/dom/fs/shared/ManagedMozPromiseRequestHolder.h b/dom/fs/shared/ManagedMozPromiseRequestHolder.h
new file mode 100644
index 0000000000..1b039577a3
--- /dev/null
+++ b/dom/fs/shared/ManagedMozPromiseRequestHolder.h
@@ -0,0 +1,37 @@
+/* -*- 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 DOM_FS_SHARED_MANAGEDMOZPROMISEREQUESTHOLDER_H_
+#define DOM_FS_SHARED_MANAGEDMOZPROMISEREQUESTHOLDER_H_
+
+#include "mozilla/MozPromise.h"
+#include "mozilla/RefPtr.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla::dom::fs {
+
+template <typename Manager, typename PromiseType>
+class ManagedMozPromiseRequestHolder final
+    : public MozPromiseRequestHolder<PromiseType> {
+ public:
+  explicit ManagedMozPromiseRequestHolder(Manager* aManager)
+      : mManager(aManager) {
+    mManager->RegisterPromiseRequestHolder(this);
+  }
+
+  NS_INLINE_DECL_REFCOUNTING(ManagedMozPromiseRequestHolder)
+
+ private:
+  ~ManagedMozPromiseRequestHolder() {
+    mManager->UnregisterPromiseRequestHolder(this);
+  }
+
+  RefPtr<Manager> mManager;
+};
+
+}  // namespace mozilla::dom::fs
+
+#endif  // DOM_FS_SHARED_MANAGEDMOZPROMISEREQUESTHOLDER_H_