chromium/storage/browser/file_system/async_file_util.h

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef STORAGE_BROWSER_FILE_SYSTEM_ASYNC_FILE_UTIL_H_
#define STORAGE_BROWSER_FILE_SYSTEM_ASYNC_FILE_UTIL_H_

#include <stdint.h>

#include <memory>
#include <vector>

#include "base/component_export.h"
#include "base/files/file.h"
#include "base/functional/callback_forward.h"
#include "components/services/filesystem/public/mojom/types.mojom.h"
#include "storage/browser/file_system/file_system_operation.h"

namespace base {
class Time;
}

namespace storage {
class ShareableFileReference;
}

namespace storage {

class FileSystemOperationContext;
class FileSystemURL;

// An interface which provides filesystem-specific file operations for
// FileSystemOperationImpl.
//
// Each filesystem which needs to be dispatched from FileSystemOperationImpl
// must implement this interface or a synchronous version of interface:
// FileSystemFileUtil.
//
// As far as an instance of this class is owned by a FileSystemBackend
// (which is owned by FileSystemContext), it's guaranteed that this instance's
// alive while FileSystemOperationContext given to each operation is kept
// alive. (Note that this instance might be freed on different thread
// from the thread it is created.)
//
// It is NOT valid to give null callback to this class, and implementors
// can assume that they don't get any null callbacks.
//
class AsyncFileUtil { … };

}  // namespace storage

#endif  // STORAGE_BROWSER_FILE_SYSTEM_ASYNC_FILE_UTIL_H_