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Unified Diff: net/disk_cache/blockfile/entry_impl_v3.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/disk_cache/blockfile/entry_impl_v3.h
diff --git a/net/disk_cache/blockfile/entry_impl_v3.h b/net/disk_cache/blockfile/entry_impl_v3.h
deleted file mode 100644
index c693c2a79d19e88599b2a5ac0be77ee42051eeb9..0000000000000000000000000000000000000000
--- a/net/disk_cache/blockfile/entry_impl_v3.h
+++ /dev/null
@@ -1,220 +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.
-
-#ifndef NET_DISK_CACHE_BLOCKFILE_ENTRY_IMPL_V3_H_
-#define NET_DISK_CACHE_BLOCKFILE_ENTRY_IMPL_V3_H_
-
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "net/base/net_log.h"
-#include "net/disk_cache/blockfile/disk_format_v3.h"
-#include "net/disk_cache/blockfile/storage_block.h"
-#include "net/disk_cache/disk_cache.h"
-
-namespace disk_cache {
-
-class BackendImplV3;
-class SparseControlV3;
-
-// This class implements the Entry interface. An object of this
-// class represents a single entry on the cache.
-class NET_EXPORT_PRIVATE EntryImplV3
- : public Entry,
- public base::RefCounted<EntryImplV3> {
- friend class base::RefCounted<EntryImplV3>;
- // friend class SparseControlV3;
- public:
- enum Operation {
- kRead,
- kWrite,
- kSparseRead,
- kSparseWrite,
- kAsyncIO,
- kReadAsync1,
- kWriteAsync1
- };
-
- EntryImplV3(BackendImplV3* backend, Addr address, bool read_only);
-
- // Performs the initialization of a EntryImplV3 that will be added to the
- // cache.
- bool CreateEntry(Addr node_address, const std::string& key, uint32 hash);
-
- uint32 GetHash();
-
- uint32 GetHash() const;
- Addr GetAddress() const;
- int GetReuseCounter() const;
- void SetReuseCounter(int count);
- int GetRefetchCounter() const;
- void SetRefetchCounter(int count);
-
- // Returns true if this entry matches the lookup arguments.
- bool IsSameEntry(const std::string& key, uint32 hash);
-
- // Permamently destroys this entry.
- void InternalDoom();
-
- // Returns false if the entry is clearly invalid.
- bool SanityCheck();
- bool DataSanityCheck();
-
- // Attempts to make this entry reachable though the key.
- void FixForDelete();
-
- // Set the access times for this entry. This method provides support for
- // the upgrade tool.
- void SetTimes(base::Time last_used, base::Time last_modified);
-
- // Logs a begin event and enables logging for the EntryImplV3. Will also cause
- // an end event to be logged on destruction. The EntryImplV3 must have its key
- // initialized before this is called. |created| is true if the Entry was
- // created rather than opened.
- void BeginLogging(net::NetLog* net_log, bool created);
-
- const net::BoundNetLog& net_log() const;
-
- // Entry interface.
- void Doom() override;
- void Close() override;
- std::string GetKey() const override;
- base::Time GetLastUsed() const override;
- base::Time GetLastModified() const override;
- int32 GetDataSize(int index) const override;
- int ReadData(int index,
- int offset,
- IOBuffer* buf,
- int buf_len,
- const CompletionCallback& callback) override;
- int WriteData(int index,
- int offset,
- IOBuffer* buf,
- int buf_len,
- const CompletionCallback& callback,
- bool truncate) override;
- int ReadSparseData(int64 offset,
- IOBuffer* buf,
- int buf_len,
- const CompletionCallback& callback) override;
- int WriteSparseData(int64 offset,
- IOBuffer* buf,
- int buf_len,
- const CompletionCallback& callback) override;
- int GetAvailableRange(int64 offset,
- int len,
- int64* start,
- const CompletionCallback& callback) override;
- bool CouldBeSparse() const override;
- void CancelSparseIO() override;
- int ReadyForSparseIO(const CompletionCallback& callback) override;
-
- private:
- enum {
- kNumStreams = 3
- };
- class UserBuffer;
-
- ~EntryImplV3() override;
-
- // Do all the work for ReadDataImpl and WriteDataImpl. Implemented as
- // separate functions to make logging of results simpler.
- int InternalReadData(int index, int offset, IOBuffer* buf,
- int buf_len, const CompletionCallback& callback);
- int InternalWriteData(int index, int offset, IOBuffer* buf, int buf_len,
- const CompletionCallback& callback, bool truncate);
-
- // Initializes the storage for an internal or external data block.
- bool CreateDataBlock(int index, int size);
-
- // Initializes the storage for an internal or external generic block.
- bool CreateBlock(int size, Addr* address);
-
- // Deletes the data pointed by address, maybe backed by files_[index].
- // Note that most likely the caller should delete (and store) the reference to
- // |address| *before* calling this method because we don't want to have an
- // entry using an address that is already free.
- void DeleteData(Addr address, int index);
-
- // Updates ranking information.
- void UpdateRank(bool modified);
-
- // Deletes this entry from disk. If |everything| is false, only the user data
- // will be removed, leaving the key and control data intact.
- void DeleteEntryData(bool everything);
-
- // Prepares the target file or buffer for a write of buf_len bytes at the
- // given offset.
- bool PrepareTarget(int index, int offset, int buf_len, bool truncate);
-
- // Adjusts the internal buffer and file handle for a write that truncates this
- // stream.
- bool HandleTruncation(int index, int offset, int buf_len);
-
- // Copies data from disk to the internal buffer.
- bool CopyToLocalBuffer(int index);
-
- // Reads from a block data file to this object's memory buffer.
- bool MoveToLocalBuffer(int index);
-
- // Loads the external file to this object's memory buffer.
- bool ImportSeparateFile(int index, int new_size);
-
- // Makes sure that the internal buffer can handle the a write of |buf_len|
- // bytes to |offset|.
- bool PrepareBuffer(int index, int offset, int buf_len);
-
- // Flushes the in-memory data to the backing storage. The data destination
- // is determined based on the current data length and |min_len|.
- bool Flush(int index, int min_len);
-
- // Updates the size of a given data stream.
- void UpdateSize(int index, int old_size, int new_size);
-
- // Initializes the sparse control object. Returns a net error code.
- int InitSparseData();
-
- // Adds the provided |flags| to the current EntryFlags for this entry.
- void SetEntryFlags(uint32 flags);
-
- // Returns the current EntryFlags for this entry.
- uint32 GetEntryFlags();
-
- // Gets the data stored at the given index. If the information is in memory,
- // a buffer will be allocated and the data will be copied to it (the caller
- // can find out the size of the buffer before making this call). Otherwise,
- // the cache address of the data will be returned, and that address will be
- // removed from the regular book keeping of this entry so the caller is
- // responsible for deleting the block (or file) from the backing store at some
- // point; there is no need to report any storage-size change, only to do the
- // actual cleanup.
- void GetData(int index, char** buffer, Addr* address);
-
- // Generates a histogram for the time spent working on this operation.
- void ReportIOTime(Operation op, const base::TimeTicks& start);
-
- // Logs this entry to the internal trace buffer.
- void Log(const char* msg);
-
- scoped_ptr<EntryRecord> entry_; // Basic record for this entry.
- scoped_ptr<ShortEntryRecord> short_entry_; // Valid for evicted entries.
- base::WeakPtr<BackendImplV3> backend_; // Back pointer to the cache.
- scoped_ptr<UserBuffer> user_buffers_[kNumStreams]; // Stores user data.
- mutable std::string key_; // Copy of the key.
- Addr address_;
- int unreported_size_[kNumStreams]; // Bytes not reported yet to the backend.
- bool doomed_; // True if this entry was removed from the cache.
- bool read_only_;
- bool dirty_; // True if there is something to write.
- bool modified_;
- // scoped_ptr<SparseControlV3> sparse_; // Support for sparse entries.
-
- net::BoundNetLog net_log_;
-
- DISALLOW_COPY_AND_ASSIGN(EntryImplV3);
-};
-
-} // namespace disk_cache
-
-#endif // NET_DISK_CACHE_BLOCKFILE_ENTRY_IMPL_V3_H_
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