| Index: net/disk_cache/blockfile/block_files.h
|
| diff --git a/net/disk_cache/blockfile/block_files.h b/net/disk_cache/blockfile/block_files.h
|
| deleted file mode 100644
|
| index 7c2794a030322a7a1f5caad079fb0d8174e3446e..0000000000000000000000000000000000000000
|
| --- a/net/disk_cache/blockfile/block_files.h
|
| +++ /dev/null
|
| @@ -1,169 +0,0 @@
|
| -// 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.
|
| -
|
| -#ifndef NET_DISK_CACHE_BLOCKFILE_BLOCK_FILES_H_
|
| -#define NET_DISK_CACHE_BLOCKFILE_BLOCK_FILES_H_
|
| -
|
| -#include <vector>
|
| -
|
| -#include "base/files/file_path.h"
|
| -#include "base/gtest_prod_util.h"
|
| -#include "base/memory/scoped_ptr.h"
|
| -#include "net/base/net_export.h"
|
| -#include "net/disk_cache/blockfile/addr.h"
|
| -#include "net/disk_cache/blockfile/disk_format_base.h"
|
| -#include "net/disk_cache/blockfile/mapped_file.h"
|
| -
|
| -namespace base {
|
| -class ThreadChecker;
|
| -}
|
| -
|
| -namespace disk_cache {
|
| -
|
| -// An instance of this class represents the header of a block file in memory.
|
| -// Note that this class doesn't perform any file operation (as in it only deals
|
| -// with entities in memory).
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| -// The header of a block file (and hence, this object) is all that is needed to
|
| -// perform common operations like allocating or releasing space for storage;
|
| -// actual access to that storage, however, is not performed through this class.
|
| -class NET_EXPORT_PRIVATE BlockHeader {
|
| - public:
|
| - BlockHeader();
|
| - explicit BlockHeader(BlockFileHeader* header);
|
| - explicit BlockHeader(MappedFile* file);
|
| - BlockHeader(const BlockHeader& other);
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| - ~BlockHeader();
|
| -
|
| - // Creates a new entry of |size| blocks on the allocation map, updating the
|
| - // apropriate counters.
|
| - bool CreateMapBlock(int size, int* index);
|
| -
|
| - // Deletes the block pointed by |index|.
|
| - void DeleteMapBlock(int index, int block_size);
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| -
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| - // Returns true if the specified block is used.
|
| - bool UsedMapBlock(int index, int size);
|
| -
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| - // Restores the "empty counters" and allocation hints.
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| - void FixAllocationCounters();
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| -
|
| - // Returns true if the current block file should not be used as-is to store
|
| - // more records. |block_count| is the number of blocks to allocate.
|
| - bool NeedToGrowBlockFile(int block_count) const;
|
| -
|
| - // Returns true if this block file can be used to store an extra record of
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| - // size |block_count|.
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| - bool CanAllocate(int block_count) const;
|
| -
|
| - // Returns the number of empty blocks for this file.
|
| - int EmptyBlocks() const;
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| -
|
| - // Returns the minumum number of allocations that can be satisfied.
|
| - int MinimumAllocations() const;
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| -
|
| - // Returns the number of blocks that this file can store.
|
| - int Capacity() const;
|
| -
|
| - // Returns true if the counters look OK.
|
| - bool ValidateCounters() const;
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| -
|
| - // Returns the identifiers of this and the next file (0 if there is none).
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| - int FileId() const;
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| - int NextFileId() const;
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| -
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| - // Returns the size of the wrapped structure (BlockFileHeader).
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| - int Size() const;
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| -
|
| - // Returns a pointer to the underlying BlockFileHeader.
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| - // TODO(rvargas): This may be removed with the support for V2.
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| - BlockFileHeader* Header();
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| -
|
| - private:
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| - BlockFileHeader* header_;
|
| -};
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| -
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| -typedef std::vector<BlockHeader> BlockFilesBitmaps;
|
| -
|
| -// This class handles the set of block-files open by the disk cache.
|
| -class NET_EXPORT_PRIVATE BlockFiles {
|
| - public:
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| - explicit BlockFiles(const base::FilePath& path);
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| - ~BlockFiles();
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| -
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| - // Performs the object initialization. create_files indicates if the backing
|
| - // files should be created or just open.
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| - bool Init(bool create_files);
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| -
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| - // Returns the file that stores a given address.
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| - MappedFile* GetFile(Addr address);
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| -
|
| - // Creates a new entry on a block file. block_type indicates the size of block
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| - // to be used (as defined on cache_addr.h), block_count is the number of
|
| - // blocks to allocate, and block_address is the address of the new entry.
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| - bool CreateBlock(FileType block_type, int block_count, Addr* block_address);
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| -
|
| - // Removes an entry from the block files. If deep is true, the storage is zero
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| - // filled; otherwise the entry is removed but the data is not altered (must be
|
| - // already zeroed).
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| - void DeleteBlock(Addr address, bool deep);
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| -
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| - // Close all the files and set the internal state to be initializad again. The
|
| - // cache is being purged.
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| - void CloseFiles();
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| -
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| - // Sends UMA stats.
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| - void ReportStats();
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| -
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| - // Returns true if the blocks pointed by a given address are currently used.
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| - // This method is only intended for debugging.
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| - bool IsValid(Addr address);
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| -
|
| - private:
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| - // Set force to true to overwrite the file if it exists.
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| - bool CreateBlockFile(int index, FileType file_type, bool force);
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| - bool OpenBlockFile(int index);
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| -
|
| - // Attemp to grow this file. Fails if the file cannot be extended anymore.
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| - bool GrowBlockFile(MappedFile* file, BlockFileHeader* header);
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| -
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| - // Returns the appropriate file to use for a new block.
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| - MappedFile* FileForNewBlock(FileType block_type, int block_count);
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| -
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| - // Returns the next block file on this chain, creating new files if needed.
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| - MappedFile* NextFile(MappedFile* file);
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| -
|
| - // Creates an empty block file and returns its index.
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| - int16 CreateNextBlockFile(FileType block_type);
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| -
|
| - // Removes a chained block file that is now empty.
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| - bool RemoveEmptyFile(FileType block_type);
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| -
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| - // Restores the header of a potentially inconsistent file.
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| - bool FixBlockFileHeader(MappedFile* file);
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| -
|
| - // Retrieves stats for the given file index.
|
| - void GetFileStats(int index, int* used_count, int* load);
|
| -
|
| - // Returns the filename for a given file index.
|
| - base::FilePath Name(int index);
|
| -
|
| - bool init_;
|
| - char* zero_buffer_; // Buffer to speed-up cleaning deleted entries.
|
| - base::FilePath path_; // Path to the backing folder.
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| - std::vector<MappedFile*> block_files_; // The actual files.
|
| - scoped_ptr<base::ThreadChecker> thread_checker_;
|
| -
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| - FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_ZeroSizeFile);
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| - FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_TruncatedFile);
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| - FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_InvalidFile);
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| - FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_Stats);
|
| -
|
| - DISALLOW_COPY_AND_ASSIGN(BlockFiles);
|
| -};
|
| -
|
| -} // namespace disk_cache
|
| -
|
| -#endif // NET_DISK_CACHE_BLOCKFILE_BLOCK_FILES_H_
|
|
|