backend_worker_v3.h revision effb81e5f8246d0db0270817048dc992db66e9fb 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// See net/disk_cache/disk_cache.h for the public interface of the cache.
6
7#ifndef NET_DISK_CACHE_BLOCKFILE_BACKEND_WORKER_V3_H_
8#define NET_DISK_CACHE_BLOCKFILE_BACKEND_WORKER_V3_H_
9
10#include "base/containers/hash_tables.h"
11#include "base/files/file_path.h"
12#include "net/disk_cache/blockfile/addr.h"
13#include "net/disk_cache/blockfile/backend_impl_v3.h"
14#include "net/disk_cache/blockfile/block_files.h"
15
16namespace disk_cache {
17
18class BackendImplV3::Worker : public base::RefCountedThreadSafe<Worker> {
19 public:
20  Worker(const base::FilePath& path, base::MessageLoopProxy* main_thread);
21
22  // Performs general initialization for this current instance of the cache.
23  int Init(const CompletionCallback& callback);
24
25 private:
26  friend class base::RefCountedThreadSafe<Worker>;
27
28  ~Worker();
29  void CleanupCache();
30
31  // Returns the full name for an external storage file.
32  base::FilePath GetFileName(Addr address) const;
33
34  // Creates a new backing file for the cache index.
35  bool CreateBackingStore(disk_cache::File* file);
36  bool InitBackingStore(bool* file_created);
37
38  // Performs basic checks on the index file. Returns false on failure.
39  bool CheckIndex();
40
41  base::FilePath path_;  // Path to the folder used as backing storage.
42  BlockFiles block_files_;  // Set of files used to store all data.
43  bool init_;  // controls the initialization of the system.
44
45  DISALLOW_COPY_AND_ASSIGN(Worker);
46};
47
48}  // namespace disk_cache
49
50#endif  // NET_DISK_CACHE_BLOCKFILE_BACKEND_WORKER_V3_H_
51