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// Copyright (c) 2012 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_BLOCKFILE_BACKEND_WORKER_V3_H_
#define NET_DISK_CACHE_BLOCKFILE_BACKEND_WORKER_V3_H_
#include "base/containers/hash_tables.h"
#include "base/files/file_path.h"
#include "base/timer/timer.h"
#include "net/disk_cache/blockfile/block_files.h"
#include "net/disk_cache/blockfile/eviction.h"
#include "net/disk_cache/blockfile/in_flight_backend_io.h"
#include "net/disk_cache/blockfile/rankings.h"
#include "net/disk_cache/blockfile/stats.h"
#include "net/disk_cache/blockfile/stress_support.h"
#include "net/disk_cache/blockfile/trace.h"
#include "net/disk_cache/disk_cache.h"
namespace disk_cache {
// This class implements the Backend interface. An object of this
// class handles the operations of the cache for a particular profile.
class NET_EXPORT_PRIVATE BackendImpl : public Backend {
friend class Eviction;
public:
BackendImpl(const base::FilePath& path, base::MessageLoopProxy* cache_thread,
net::NetLog* net_log);
// Performs general initialization for this current instance of the cache.
int Init(const CompletionCallback& callback);
private:
void CleanupCache();
// Returns the full name for an external storage file.
base::FilePath GetFileName(Addr address) const;
// Creates a new backing file for the cache index.
bool CreateBackingStore(disk_cache::File* file);
bool InitBackingStore(bool* file_created);
// Reports an uncommon, recoverable error.
void ReportError(int error);
// Performs basic checks on the index file. Returns false on failure.
bool CheckIndex();
base::FilePath path_; // Path to the folder used as backing storage.
BlockFiles block_files_; // Set of files used to store all data.
bool init_; // controls the initialization of the system.
DISALLOW_COPY_AND_ASSIGN(BackendImpl);
};
} // namespace disk_cache
#endif // NET_DISK_CACHE_BLOCKFILE_BACKEND_WORKER_V3_H_
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