blob: 25709207df6595fc4dc9634c01e488d69d827ff8 [file] [log] [blame]
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// See net/disk_cache/disk_cache.h for the public interface of the cache.
#ifndef NET_DISK_CACHE_FILE_BLOCK_H__
#define NET_DISK_CACHE_FILE_BLOCK_H__
namespace disk_cache {
// This interface exposes common functionality for a single block of data
// stored on a file-block, regardless of the real type or size of the block.
// Used to simplify loading / storing the block from disk.
class FileBlock {
public:
virtual ~FileBlock() {}
// Returns a pointer to the actual data.
virtual void* buffer() const = 0;
// Returns the size of the block;
virtual size_t size() const = 0;
// Returns the file offset of this block.
virtual int offset() const = 0;
};
} // namespace disk_cache
#endif // NET_DISK_CACHE_FILE_BLOCK_H__