chromium/net/disk_cache/backend_cleanup_tracker.h

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_DISK_CACHE_BACKEND_CLEANUP_TRACKER_H_
#define NET_DISK_CACHE_BACKEND_CLEANUP_TRACKER_H_

#include <utility>
#include <vector>

#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/sequence_checker.h"
#include "net/base/net_export.h"

namespace base {
class SequencedTaskRunner;
}  // namespace base

namespace disk_cache {

// Internal helper used to sequence cleanup and reuse of cache directories.
// One of these is created before each backend, and is kept alive till both
// the backend is destroyed and all of its work is done by its refcount,
// which keeps track of outstanding work. That refcount is expected to only be
// updated from the I/O thread or its equivalent.
class NET_EXPORT_PRIVATE BackendCleanupTracker
    : public base::RefCounted<BackendCleanupTracker> { … };

}  // namespace disk_cache

#endif  // NET_DISK_CACHE_BACKEND_CLEANUP_TRACKER_H_