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1 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_DISK_CACHE_ENTRY_IMPL_H_ | 5 #ifndef NET_DISK_CACHE_ENTRY_IMPL_H_ |
6 #define NET_DISK_CACHE_ENTRY_IMPL_H_ | 6 #define NET_DISK_CACHE_ENTRY_IMPL_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/scoped_ptr.h" | 9 #include "base/scoped_ptr.h" |
10 #include "net/base/net_log.h" | |
11 #include "net/disk_cache/disk_cache.h" | 10 #include "net/disk_cache/disk_cache.h" |
12 #include "net/disk_cache/storage_block.h" | 11 #include "net/disk_cache/storage_block.h" |
13 #include "net/disk_cache/storage_block-inl.h" | 12 #include "net/disk_cache/storage_block-inl.h" |
14 | 13 |
15 namespace disk_cache { | 14 namespace disk_cache { |
16 | 15 |
17 class BackendImpl; | 16 class BackendImpl; |
18 class SparseControl; | 17 class SparseControl; |
19 | 18 |
20 // This class implements the Entry interface. An object of this | 19 // This class implements the Entry interface. An object of this |
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123 void IncrementIoCount(); | 122 void IncrementIoCount(); |
124 void DecrementIoCount(); | 123 void DecrementIoCount(); |
125 | 124 |
126 // Set the access times for this entry. This method provides support for | 125 // Set the access times for this entry. This method provides support for |
127 // the upgrade tool. | 126 // the upgrade tool. |
128 void SetTimes(base::Time last_used, base::Time last_modified); | 127 void SetTimes(base::Time last_used, base::Time last_modified); |
129 | 128 |
130 // Generates a histogram for the time spent working on this operation. | 129 // Generates a histogram for the time spent working on this operation. |
131 void ReportIOTime(Operation op, const base::TimeTicks& start); | 130 void ReportIOTime(Operation op, const base::TimeTicks& start); |
132 | 131 |
133 // Logs a begin event and enables logging for the EntryImpl. Will also cause | |
134 // an end event to be logged on destruction. The EntryImpl must have its key | |
135 // initialized before this is called. |created| is true if the Entry was | |
136 // created rather than opened. | |
137 void BeginLogging(net::NetLog* net_log, bool created); | |
138 | |
139 const net::BoundNetLog& net_log() const; | |
140 | |
141 private: | 132 private: |
142 enum { | 133 enum { |
143 kNumStreams = 3 | 134 kNumStreams = 3 |
144 }; | 135 }; |
145 class UserBuffer; | 136 class UserBuffer; |
146 | 137 |
147 ~EntryImpl(); | 138 ~EntryImpl(); |
148 | 139 |
149 // Do all the work for ReadDataImpl and WriteDataImpl. Implemented as | |
150 // separate functions to make logging of results simpler. | |
151 int InternalReadData(int index, int offset, net::IOBuffer* buf, | |
152 int buf_len, CompletionCallback* callback); | |
153 int InternalWriteData(int index, int offset, net::IOBuffer* buf, int buf_len, | |
154 CompletionCallback* callback, bool truncate); | |
155 | |
156 // Initializes the storage for an internal or external data block. | 140 // Initializes the storage for an internal or external data block. |
157 bool CreateDataBlock(int index, int size); | 141 bool CreateDataBlock(int index, int size); |
158 | 142 |
159 // Initializes the storage for an internal or external generic block. | 143 // Initializes the storage for an internal or external generic block. |
160 bool CreateBlock(int size, Addr* address); | 144 bool CreateBlock(int size, Addr* address); |
161 | 145 |
162 // Deletes the data pointed by address, maybe backed by files_[index]. | 146 // Deletes the data pointed by address, maybe backed by files_[index]. |
163 // Note that most likely the caller should delete (and store) the reference to | 147 // Note that most likely the caller should delete (and store) the reference to |
164 // |address| *before* calling this method because we don't want to have an | 148 // |address| *before* calling this method because we don't want to have an |
165 // entry using an address that is already free. | 149 // entry using an address that is already free. |
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229 BackendImpl* backend_; // Back pointer to the cache. | 213 BackendImpl* backend_; // Back pointer to the cache. |
230 scoped_ptr<UserBuffer> user_buffers_[kNumStreams]; // Stores user data. | 214 scoped_ptr<UserBuffer> user_buffers_[kNumStreams]; // Stores user data. |
231 // Files to store external user data and key. | 215 // Files to store external user data and key. |
232 scoped_refptr<File> files_[kNumStreams + 1]; | 216 scoped_refptr<File> files_[kNumStreams + 1]; |
233 mutable std::string key_; // Copy of the key. | 217 mutable std::string key_; // Copy of the key. |
234 int unreported_size_[kNumStreams]; // Bytes not reported yet to the backend. | 218 int unreported_size_[kNumStreams]; // Bytes not reported yet to the backend. |
235 bool doomed_; // True if this entry was removed from the cache. | 219 bool doomed_; // True if this entry was removed from the cache. |
236 bool read_only_; // True if not yet writing. | 220 bool read_only_; // True if not yet writing. |
237 scoped_ptr<SparseControl> sparse_; // Support for sparse entries. | 221 scoped_ptr<SparseControl> sparse_; // Support for sparse entries. |
238 | 222 |
239 net::BoundNetLog net_log_; | |
240 | |
241 DISALLOW_COPY_AND_ASSIGN(EntryImpl); | 223 DISALLOW_COPY_AND_ASSIGN(EntryImpl); |
242 }; | 224 }; |
243 | 225 |
244 } // namespace disk_cache | 226 } // namespace disk_cache |
245 | 227 |
246 #endif // NET_DISK_CACHE_ENTRY_IMPL_H_ | 228 #endif // NET_DISK_CACHE_ENTRY_IMPL_H_ |
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