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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_ | 5 #ifndef NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_ |
6 #define NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_ | 6 #define NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_ |
7 | 7 |
8 #include <algorithm> | 8 #include <algorithm> |
9 #include <map> | 9 #include <map> |
10 #include <string> | 10 #include <string> |
11 #include <utility> | 11 #include <utility> |
12 #include <vector> | 12 #include <vector> |
13 | 13 |
| 14 #include "base/files/file.h" |
14 #include "base/files/file_path.h" | 15 #include "base/files/file_path.h" |
15 #include "base/memory/ref_counted.h" | 16 #include "base/memory/ref_counted.h" |
16 #include "base/memory/scoped_ptr.h" | 17 #include "base/memory/scoped_ptr.h" |
17 #include "base/platform_file.h" | |
18 #include "base/time/time.h" | 18 #include "base/time/time.h" |
19 #include "net/base/cache_type.h" | 19 #include "net/base/cache_type.h" |
20 #include "net/base/net_export.h" | 20 #include "net/base/net_export.h" |
21 #include "net/disk_cache/simple/simple_entry_format.h" | 21 #include "net/disk_cache/simple/simple_entry_format.h" |
22 | 22 |
23 namespace net { | 23 namespace net { |
24 class GrowableIOBuffer; | 24 class GrowableIOBuffer; |
25 class IOBuffer; | 25 class IOBuffer; |
26 } | 26 } |
27 | 27 |
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206 uint64 entry_hash); | 206 uint64 entry_hash); |
207 | 207 |
208 // Like Entry, the SimpleSynchronousEntry self releases when Close() is | 208 // Like Entry, the SimpleSynchronousEntry self releases when Close() is |
209 // called. | 209 // called. |
210 ~SimpleSynchronousEntry(); | 210 ~SimpleSynchronousEntry(); |
211 | 211 |
212 // Tries to open one of the cache entry files. Succeeds if the open succeeds | 212 // Tries to open one of the cache entry files. Succeeds if the open succeeds |
213 // or if the file was not found and is allowed to be omitted if the | 213 // or if the file was not found and is allowed to be omitted if the |
214 // corresponding stream is empty. | 214 // corresponding stream is empty. |
215 bool MaybeOpenFile(int file_index, | 215 bool MaybeOpenFile(int file_index, |
216 base::PlatformFileError* out_error); | 216 base::File::Error* out_error); |
217 // Creates one of the cache entry files if necessary. If the file is allowed | 217 // Creates one of the cache entry files if necessary. If the file is allowed |
218 // to be omitted if the corresponding stream is empty, and if |file_required| | 218 // to be omitted if the corresponding stream is empty, and if |file_required| |
219 // is FILE_NOT_REQUIRED, then the file is not created; otherwise, it is. | 219 // is FILE_NOT_REQUIRED, then the file is not created; otherwise, it is. |
220 bool MaybeCreateFile(int file_index, | 220 bool MaybeCreateFile(int file_index, |
221 FileRequired file_required, | 221 FileRequired file_required, |
222 base::PlatformFileError* out_error); | 222 base::File::Error* out_error); |
223 bool OpenFiles(bool had_index, | 223 bool OpenFiles(bool had_index, |
224 SimpleEntryStat* out_entry_stat); | 224 SimpleEntryStat* out_entry_stat); |
225 bool CreateFiles(bool had_index, | 225 bool CreateFiles(bool had_index, |
226 SimpleEntryStat* out_entry_stat); | 226 SimpleEntryStat* out_entry_stat); |
227 void CloseFile(int index); | 227 void CloseFile(int index); |
228 void CloseFiles(); | 228 void CloseFiles(); |
229 | 229 |
230 // Returns a net error, i.e. net::OK on success. |had_index| is passed | 230 // Returns a net error, i.e. net::OK on success. |had_index| is passed |
231 // from the main entry for metrics purposes, and is true if the index was | 231 // from the main entry for metrics purposes, and is true if the index was |
232 // initialized when the open operation began. | 232 // initialized when the open operation began. |
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261 int* out_data_size) const; | 261 int* out_data_size) const; |
262 void Doom() const; | 262 void Doom() const; |
263 | 263 |
264 // Opens the sparse data file and scans it if it exists. | 264 // Opens the sparse data file and scans it if it exists. |
265 bool OpenSparseFileIfExists(int32* out_sparse_data_size); | 265 bool OpenSparseFileIfExists(int32* out_sparse_data_size); |
266 | 266 |
267 // Creates and initializes the sparse data file. | 267 // Creates and initializes the sparse data file. |
268 bool CreateSparseFile(); | 268 bool CreateSparseFile(); |
269 | 269 |
270 // Closes the sparse data file. | 270 // Closes the sparse data file. |
271 bool CloseSparseFile(); | 271 void CloseSparseFile(); |
272 | 272 |
273 // Writes the header to the (newly-created) sparse file. | 273 // Writes the header to the (newly-created) sparse file. |
274 bool InitializeSparseFile(); | 274 bool InitializeSparseFile(); |
275 | 275 |
276 // Removes all but the header of the sparse file. | 276 // Removes all but the header of the sparse file. |
277 bool TruncateSparseFile(); | 277 bool TruncateSparseFile(); |
278 | 278 |
279 // Scans the existing ranges in the sparse file. Populates |sparse_ranges_| | 279 // Scans the existing ranges in the sparse file. Populates |sparse_ranges_| |
280 // and sets |*out_sparse_data_size| to the total size of all the ranges (not | 280 // and sets |*out_sparse_data_size| to the total size of all the ranges (not |
281 // including headers). | 281 // including headers). |
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298 uint64 entry_hash, | 298 uint64 entry_hash, |
299 int file_index); | 299 int file_index); |
300 static bool DeleteFilesForEntryHash(const base::FilePath& path, | 300 static bool DeleteFilesForEntryHash(const base::FilePath& path, |
301 uint64 entry_hash); | 301 uint64 entry_hash); |
302 | 302 |
303 void RecordSyncCreateResult(CreateEntryResult result, bool had_index); | 303 void RecordSyncCreateResult(CreateEntryResult result, bool had_index); |
304 | 304 |
305 base::FilePath GetFilenameFromFileIndex(int file_index); | 305 base::FilePath GetFilenameFromFileIndex(int file_index); |
306 | 306 |
307 bool sparse_file_open() const { | 307 bool sparse_file_open() const { |
308 return sparse_file_ != base::kInvalidPlatformFileValue; | 308 return sparse_file_.IsValid(); |
309 } | 309 } |
310 | 310 |
311 const net::CacheType cache_type_; | 311 const net::CacheType cache_type_; |
312 const base::FilePath path_; | 312 const base::FilePath path_; |
313 const uint64 entry_hash_; | 313 const uint64 entry_hash_; |
314 std::string key_; | 314 std::string key_; |
315 | 315 |
316 bool have_open_files_; | 316 bool have_open_files_; |
317 bool initialized_; | 317 bool initialized_; |
318 | 318 |
319 base::PlatformFile files_[kSimpleEntryFileCount]; | 319 base::File files_[kSimpleEntryFileCount]; |
320 | 320 |
321 // True if the corresponding stream is empty and therefore no on-disk file | 321 // True if the corresponding stream is empty and therefore no on-disk file |
322 // was created to store it. | 322 // was created to store it. |
323 bool empty_file_omitted_[kSimpleEntryFileCount]; | 323 bool empty_file_omitted_[kSimpleEntryFileCount]; |
324 | 324 |
325 typedef std::map<int64, SparseRange> SparseRangeOffsetMap; | 325 typedef std::map<int64, SparseRange> SparseRangeOffsetMap; |
326 typedef SparseRangeOffsetMap::iterator SparseRangeIterator; | 326 typedef SparseRangeOffsetMap::iterator SparseRangeIterator; |
327 SparseRangeOffsetMap sparse_ranges_; | 327 SparseRangeOffsetMap sparse_ranges_; |
328 base::PlatformFile sparse_file_; | 328 base::File sparse_file_; |
329 // Offset of the end of the sparse file (where the next sparse range will be | 329 // Offset of the end of the sparse file (where the next sparse range will be |
330 // written). | 330 // written). |
331 int64 sparse_tail_offset_; | 331 int64 sparse_tail_offset_; |
332 | 332 |
333 // True if the entry was created, or false if it was opened. Used to log | 333 // True if the entry was created, or false if it was opened. Used to log |
334 // SimpleCache.*.EntryCreatedWithStream2Omitted only for created entries. | 334 // SimpleCache.*.EntryCreatedWithStream2Omitted only for created entries. |
335 bool files_created_; | 335 bool files_created_; |
336 }; | 336 }; |
337 | 337 |
338 } // namespace disk_cache | 338 } // namespace disk_cache |
339 | 339 |
340 #endif // NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_ | 340 #endif // NET_DISK_CACHE_SIMPLE_SIMPLE_SYNCHRONOUS_ENTRY_H_ |
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