chromium/content/browser/cache_storage/cache_storage_ref.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_REF_H_
#define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_REF_H_

#include "base/memory/weak_ptr.h"

namespace content {

// A templated type used to track CacheStorage and CacheStorageCache references.
// The TargetType must provide AddHandleRef() and DropHandleRef() methods, which
// are called when the CacheStorageRef<> object is created and destroyed.
//
// Each CacheStorageRef corresponds to a high level reference from DOM objects
// exposed to JavaScript, and does not correspond to typical smart pointer
// reference counts. Internally this class uses a WeakPtr<> to the target and
// Cache Storage must manage the target's lifecycle through other mechanisms.
template <typename TargetType>
class CacheStorageRef { … };

}  // namespace content

#endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_REF_H_