net/disk_cache/blockfile/backend_worker_v3.h

   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
  16 namespace disk_cache {
  17
  18 class 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_