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| 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 #include "net/disk_cache/in_flight_backend_io.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/bind_helpers.h" | |
| 9 #include "base/compiler_specific.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "net/base/net_errors.h" | |
| 12 #include "net/disk_cache/backend_impl.h" | |
| 13 #include "net/disk_cache/entry_impl.h" | |
| 14 | |
| 15 #define CACHE_HISTOGRAM_MACROS_BACKEND_IMPL_OBJ backend_ | |
| 16 #include "net/disk_cache/histogram_macros.h" | |
| 17 | |
| 18 namespace disk_cache { | |
| 19 | |
| 20 BackendIO::BackendIO(InFlightIO* controller, BackendImpl* backend, | |
| 21 const net::CompletionCallback& callback) | |
| 22 : BackgroundIO(controller), | |
| 23 backend_(backend), | |
| 24 callback_(callback), | |
| 25 operation_(OP_NONE), | |
| 26 entry_ptr_(NULL), | |
| 27 iter_ptr_(NULL), | |
| 28 iter_(NULL), | |
| 29 entry_(NULL), | |
| 30 index_(0), | |
| 31 offset_(0), | |
| 32 buf_len_(0), | |
| 33 truncate_(false), | |
| 34 offset64_(0), | |
| 35 start_(NULL) { | |
| 36 start_time_ = base::TimeTicks::Now(); | |
| 37 } | |
| 38 | |
| 39 // Runs on the background thread. | |
| 40 void BackendIO::ExecuteOperation() { | |
| 41 if (IsEntryOperation()) | |
| 42 return ExecuteEntryOperation(); | |
| 43 | |
| 44 ExecuteBackendOperation(); | |
| 45 } | |
| 46 | |
| 47 // Runs on the background thread. | |
| 48 void BackendIO::OnIOComplete(int result) { | |
| 49 DCHECK(IsEntryOperation()); | |
| 50 DCHECK_NE(result, net::ERR_IO_PENDING); | |
| 51 result_ = result; | |
| 52 NotifyController(); | |
| 53 } | |
| 54 | |
| 55 // Runs on the primary thread. | |
| 56 void BackendIO::OnDone(bool cancel) { | |
| 57 if (IsEntryOperation()) { | |
| 58 CACHE_UMA(TIMES, "TotalIOTime", 0, ElapsedTime()); | |
| 59 } | |
| 60 | |
| 61 if (!ReturnsEntry()) | |
| 62 return; | |
| 63 | |
| 64 if (result() == net::OK) { | |
| 65 static_cast<EntryImpl*>(*entry_ptr_)->OnEntryCreated(backend_); | |
| 66 if (cancel) | |
| 67 (*entry_ptr_)->Close(); | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 bool BackendIO::IsEntryOperation() { | |
| 72 return operation_ > OP_MAX_BACKEND; | |
| 73 } | |
| 74 | |
| 75 // Runs on the background thread. | |
| 76 void BackendIO::ReferenceEntry() { | |
| 77 entry_->AddRef(); | |
| 78 } | |
| 79 | |
| 80 void BackendIO::Init() { | |
| 81 operation_ = OP_INIT; | |
| 82 } | |
| 83 | |
| 84 void BackendIO::OpenEntry(const std::string& key, Entry** entry) { | |
| 85 operation_ = OP_OPEN; | |
| 86 key_ = key; | |
| 87 entry_ptr_ = entry; | |
| 88 } | |
| 89 | |
| 90 void BackendIO::CreateEntry(const std::string& key, Entry** entry) { | |
| 91 operation_ = OP_CREATE; | |
| 92 key_ = key; | |
| 93 entry_ptr_ = entry; | |
| 94 } | |
| 95 | |
| 96 void BackendIO::DoomEntry(const std::string& key) { | |
| 97 operation_ = OP_DOOM; | |
| 98 key_ = key; | |
| 99 } | |
| 100 | |
| 101 void BackendIO::DoomAllEntries() { | |
| 102 operation_ = OP_DOOM_ALL; | |
| 103 } | |
| 104 | |
| 105 void BackendIO::DoomEntriesBetween(const base::Time initial_time, | |
| 106 const base::Time end_time) { | |
| 107 operation_ = OP_DOOM_BETWEEN; | |
| 108 initial_time_ = initial_time; | |
| 109 end_time_ = end_time; | |
| 110 } | |
| 111 | |
| 112 void BackendIO::DoomEntriesSince(const base::Time initial_time) { | |
| 113 operation_ = OP_DOOM_SINCE; | |
| 114 initial_time_ = initial_time; | |
| 115 } | |
| 116 | |
| 117 void BackendIO::OpenNextEntry(void** iter, Entry** next_entry) { | |
| 118 operation_ = OP_OPEN_NEXT; | |
| 119 iter_ptr_ = iter; | |
| 120 entry_ptr_ = next_entry; | |
| 121 } | |
| 122 | |
| 123 void BackendIO::OpenPrevEntry(void** iter, Entry** prev_entry) { | |
| 124 operation_ = OP_OPEN_PREV; | |
| 125 iter_ptr_ = iter; | |
| 126 entry_ptr_ = prev_entry; | |
| 127 } | |
| 128 | |
| 129 void BackendIO::EndEnumeration(void* iterator) { | |
| 130 operation_ = OP_END_ENUMERATION; | |
| 131 iter_ = iterator; | |
| 132 } | |
| 133 | |
| 134 void BackendIO::OnExternalCacheHit(const std::string& key) { | |
| 135 operation_ = OP_ON_EXTERNAL_CACHE_HIT; | |
| 136 key_ = key; | |
| 137 } | |
| 138 | |
| 139 void BackendIO::CloseEntryImpl(EntryImpl* entry) { | |
| 140 operation_ = OP_CLOSE_ENTRY; | |
| 141 entry_ = entry; | |
| 142 } | |
| 143 | |
| 144 void BackendIO::DoomEntryImpl(EntryImpl* entry) { | |
| 145 operation_ = OP_DOOM_ENTRY; | |
| 146 entry_ = entry; | |
| 147 } | |
| 148 | |
| 149 void BackendIO::FlushQueue() { | |
| 150 operation_ = OP_FLUSH_QUEUE; | |
| 151 } | |
| 152 | |
| 153 void BackendIO::RunTask(const base::Closure& task) { | |
| 154 operation_ = OP_RUN_TASK; | |
| 155 task_ = task; | |
| 156 } | |
| 157 | |
| 158 void BackendIO::ReadData(EntryImpl* entry, int index, int offset, | |
| 159 net::IOBuffer* buf, int buf_len) { | |
| 160 operation_ = OP_READ; | |
| 161 entry_ = entry; | |
| 162 index_ = index; | |
| 163 offset_ = offset; | |
| 164 buf_ = buf; | |
| 165 buf_len_ = buf_len; | |
| 166 } | |
| 167 | |
| 168 void BackendIO::WriteData(EntryImpl* entry, int index, int offset, | |
| 169 net::IOBuffer* buf, int buf_len, bool truncate) { | |
| 170 operation_ = OP_WRITE; | |
| 171 entry_ = entry; | |
| 172 index_ = index; | |
| 173 offset_ = offset; | |
| 174 buf_ = buf; | |
| 175 buf_len_ = buf_len; | |
| 176 truncate_ = truncate; | |
| 177 } | |
| 178 | |
| 179 void BackendIO::ReadSparseData(EntryImpl* entry, int64 offset, | |
| 180 net::IOBuffer* buf, int buf_len) { | |
| 181 operation_ = OP_READ_SPARSE; | |
| 182 entry_ = entry; | |
| 183 offset64_ = offset; | |
| 184 buf_ = buf; | |
| 185 buf_len_ = buf_len; | |
| 186 } | |
| 187 | |
| 188 void BackendIO::WriteSparseData(EntryImpl* entry, int64 offset, | |
| 189 net::IOBuffer* buf, int buf_len) { | |
| 190 operation_ = OP_WRITE_SPARSE; | |
| 191 entry_ = entry; | |
| 192 offset64_ = offset; | |
| 193 buf_ = buf; | |
| 194 buf_len_ = buf_len; | |
| 195 } | |
| 196 | |
| 197 void BackendIO::GetAvailableRange(EntryImpl* entry, int64 offset, int len, | |
| 198 int64* start) { | |
| 199 operation_ = OP_GET_RANGE; | |
| 200 entry_ = entry; | |
| 201 offset64_ = offset; | |
| 202 buf_len_ = len; | |
| 203 start_ = start; | |
| 204 } | |
| 205 | |
| 206 void BackendIO::CancelSparseIO(EntryImpl* entry) { | |
| 207 operation_ = OP_CANCEL_IO; | |
| 208 entry_ = entry; | |
| 209 } | |
| 210 | |
| 211 void BackendIO::ReadyForSparseIO(EntryImpl* entry) { | |
| 212 operation_ = OP_IS_READY; | |
| 213 entry_ = entry; | |
| 214 } | |
| 215 | |
| 216 BackendIO::~BackendIO() {} | |
| 217 | |
| 218 bool BackendIO::ReturnsEntry() { | |
| 219 return (operation_ == OP_OPEN || operation_ == OP_CREATE || | |
| 220 operation_ == OP_OPEN_NEXT || operation_ == OP_OPEN_PREV); | |
| 221 } | |
| 222 | |
| 223 base::TimeDelta BackendIO::ElapsedTime() const { | |
| 224 return base::TimeTicks::Now() - start_time_; | |
| 225 } | |
| 226 | |
| 227 // Runs on the background thread. | |
| 228 void BackendIO::ExecuteBackendOperation() { | |
| 229 switch (operation_) { | |
| 230 case OP_INIT: | |
| 231 result_ = backend_->SyncInit(); | |
| 232 break; | |
| 233 case OP_OPEN: | |
| 234 result_ = backend_->SyncOpenEntry(key_, entry_ptr_); | |
| 235 break; | |
| 236 case OP_CREATE: | |
| 237 result_ = backend_->SyncCreateEntry(key_, entry_ptr_); | |
| 238 break; | |
| 239 case OP_DOOM: | |
| 240 result_ = backend_->SyncDoomEntry(key_); | |
| 241 break; | |
| 242 case OP_DOOM_ALL: | |
| 243 result_ = backend_->SyncDoomAllEntries(); | |
| 244 break; | |
| 245 case OP_DOOM_BETWEEN: | |
| 246 result_ = backend_->SyncDoomEntriesBetween(initial_time_, end_time_); | |
| 247 break; | |
| 248 case OP_DOOM_SINCE: | |
| 249 result_ = backend_->SyncDoomEntriesSince(initial_time_); | |
| 250 break; | |
| 251 case OP_OPEN_NEXT: | |
| 252 result_ = backend_->SyncOpenNextEntry(iter_ptr_, entry_ptr_); | |
| 253 break; | |
| 254 case OP_OPEN_PREV: | |
| 255 result_ = backend_->SyncOpenPrevEntry(iter_ptr_, entry_ptr_); | |
| 256 break; | |
| 257 case OP_END_ENUMERATION: | |
| 258 backend_->SyncEndEnumeration(iter_); | |
| 259 result_ = net::OK; | |
| 260 break; | |
| 261 case OP_ON_EXTERNAL_CACHE_HIT: | |
| 262 backend_->SyncOnExternalCacheHit(key_); | |
| 263 result_ = net::OK; | |
| 264 break; | |
| 265 case OP_CLOSE_ENTRY: | |
| 266 entry_->Release(); | |
| 267 result_ = net::OK; | |
| 268 break; | |
| 269 case OP_DOOM_ENTRY: | |
| 270 entry_->DoomImpl(); | |
| 271 result_ = net::OK; | |
| 272 break; | |
| 273 case OP_FLUSH_QUEUE: | |
| 274 result_ = net::OK; | |
| 275 break; | |
| 276 case OP_RUN_TASK: | |
| 277 task_.Run(); | |
| 278 result_ = net::OK; | |
| 279 break; | |
| 280 default: | |
| 281 NOTREACHED() << "Invalid Operation"; | |
| 282 result_ = net::ERR_UNEXPECTED; | |
| 283 } | |
| 284 DCHECK_NE(net::ERR_IO_PENDING, result_); | |
| 285 NotifyController(); | |
| 286 } | |
| 287 | |
| 288 // Runs on the background thread. | |
| 289 void BackendIO::ExecuteEntryOperation() { | |
| 290 switch (operation_) { | |
| 291 case OP_READ: | |
| 292 result_ = | |
| 293 entry_->ReadDataImpl(index_, offset_, buf_.get(), buf_len_, | |
| 294 base::Bind(&BackendIO::OnIOComplete, this)); | |
| 295 break; | |
| 296 case OP_WRITE: | |
| 297 result_ = | |
| 298 entry_->WriteDataImpl(index_, offset_, buf_.get(), buf_len_, | |
| 299 base::Bind(&BackendIO::OnIOComplete, this), | |
| 300 truncate_); | |
| 301 break; | |
| 302 case OP_READ_SPARSE: | |
| 303 result_ = entry_->ReadSparseDataImpl( | |
| 304 offset64_, buf_.get(), buf_len_, | |
| 305 base::Bind(&BackendIO::OnIOComplete, this)); | |
| 306 break; | |
| 307 case OP_WRITE_SPARSE: | |
| 308 result_ = entry_->WriteSparseDataImpl( | |
| 309 offset64_, buf_.get(), buf_len_, | |
| 310 base::Bind(&BackendIO::OnIOComplete, this)); | |
| 311 break; | |
| 312 case OP_GET_RANGE: | |
| 313 result_ = entry_->GetAvailableRangeImpl(offset64_, buf_len_, start_); | |
| 314 break; | |
| 315 case OP_CANCEL_IO: | |
| 316 entry_->CancelSparseIOImpl(); | |
| 317 result_ = net::OK; | |
| 318 break; | |
| 319 case OP_IS_READY: | |
| 320 result_ = entry_->ReadyForSparseIOImpl( | |
| 321 base::Bind(&BackendIO::OnIOComplete, this)); | |
| 322 break; | |
| 323 default: | |
| 324 NOTREACHED() << "Invalid Operation"; | |
| 325 result_ = net::ERR_UNEXPECTED; | |
| 326 } | |
| 327 buf_ = NULL; | |
| 328 if (result_ != net::ERR_IO_PENDING) | |
| 329 NotifyController(); | |
| 330 } | |
| 331 | |
| 332 InFlightBackendIO::InFlightBackendIO(BackendImpl* backend, | |
| 333 base::MessageLoopProxy* background_thread) | |
| 334 : backend_(backend), | |
| 335 background_thread_(background_thread), | |
| 336 ptr_factory_(this) { | |
| 337 } | |
| 338 | |
| 339 InFlightBackendIO::~InFlightBackendIO() { | |
| 340 } | |
| 341 | |
| 342 void InFlightBackendIO::Init(const net::CompletionCallback& callback) { | |
| 343 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 344 operation->Init(); | |
| 345 PostOperation(operation.get()); | |
| 346 } | |
| 347 | |
| 348 void InFlightBackendIO::OpenEntry(const std::string& key, Entry** entry, | |
| 349 const net::CompletionCallback& callback) { | |
| 350 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 351 operation->OpenEntry(key, entry); | |
| 352 PostOperation(operation.get()); | |
| 353 } | |
| 354 | |
| 355 void InFlightBackendIO::CreateEntry(const std::string& key, Entry** entry, | |
| 356 const net::CompletionCallback& callback) { | |
| 357 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 358 operation->CreateEntry(key, entry); | |
| 359 PostOperation(operation.get()); | |
| 360 } | |
| 361 | |
| 362 void InFlightBackendIO::DoomEntry(const std::string& key, | |
| 363 const net::CompletionCallback& callback) { | |
| 364 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 365 operation->DoomEntry(key); | |
| 366 PostOperation(operation.get()); | |
| 367 } | |
| 368 | |
| 369 void InFlightBackendIO::DoomAllEntries( | |
| 370 const net::CompletionCallback& callback) { | |
| 371 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 372 operation->DoomAllEntries(); | |
| 373 PostOperation(operation.get()); | |
| 374 } | |
| 375 | |
| 376 void InFlightBackendIO::DoomEntriesBetween(const base::Time initial_time, | |
| 377 const base::Time end_time, | |
| 378 const net::CompletionCallback& callback) { | |
| 379 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 380 operation->DoomEntriesBetween(initial_time, end_time); | |
| 381 PostOperation(operation.get()); | |
| 382 } | |
| 383 | |
| 384 void InFlightBackendIO::DoomEntriesSince( | |
| 385 const base::Time initial_time, const net::CompletionCallback& callback) { | |
| 386 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 387 operation->DoomEntriesSince(initial_time); | |
| 388 PostOperation(operation.get()); | |
| 389 } | |
| 390 | |
| 391 void InFlightBackendIO::OpenNextEntry(void** iter, Entry** next_entry, | |
| 392 const net::CompletionCallback& callback) { | |
| 393 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 394 operation->OpenNextEntry(iter, next_entry); | |
| 395 PostOperation(operation.get()); | |
| 396 } | |
| 397 | |
| 398 void InFlightBackendIO::OpenPrevEntry(void** iter, Entry** prev_entry, | |
| 399 const net::CompletionCallback& callback) { | |
| 400 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 401 operation->OpenPrevEntry(iter, prev_entry); | |
| 402 PostOperation(operation.get()); | |
| 403 } | |
| 404 | |
| 405 void InFlightBackendIO::EndEnumeration(void* iterator) { | |
| 406 scoped_refptr<BackendIO> operation( | |
| 407 new BackendIO(this, backend_, net::CompletionCallback())); | |
| 408 operation->EndEnumeration(iterator); | |
| 409 PostOperation(operation.get()); | |
| 410 } | |
| 411 | |
| 412 void InFlightBackendIO::OnExternalCacheHit(const std::string& key) { | |
| 413 scoped_refptr<BackendIO> operation( | |
| 414 new BackendIO(this, backend_, net::CompletionCallback())); | |
| 415 operation->OnExternalCacheHit(key); | |
| 416 PostOperation(operation.get()); | |
| 417 } | |
| 418 | |
| 419 void InFlightBackendIO::CloseEntryImpl(EntryImpl* entry) { | |
| 420 scoped_refptr<BackendIO> operation( | |
| 421 new BackendIO(this, backend_, net::CompletionCallback())); | |
| 422 operation->CloseEntryImpl(entry); | |
| 423 PostOperation(operation.get()); | |
| 424 } | |
| 425 | |
| 426 void InFlightBackendIO::DoomEntryImpl(EntryImpl* entry) { | |
| 427 scoped_refptr<BackendIO> operation( | |
| 428 new BackendIO(this, backend_, net::CompletionCallback())); | |
| 429 operation->DoomEntryImpl(entry); | |
| 430 PostOperation(operation.get()); | |
| 431 } | |
| 432 | |
| 433 void InFlightBackendIO::FlushQueue(const net::CompletionCallback& callback) { | |
| 434 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 435 operation->FlushQueue(); | |
| 436 PostOperation(operation.get()); | |
| 437 } | |
| 438 | |
| 439 void InFlightBackendIO::RunTask( | |
| 440 const base::Closure& task, const net::CompletionCallback& callback) { | |
| 441 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 442 operation->RunTask(task); | |
| 443 PostOperation(operation.get()); | |
| 444 } | |
| 445 | |
| 446 void InFlightBackendIO::ReadData(EntryImpl* entry, int index, int offset, | |
| 447 net::IOBuffer* buf, int buf_len, | |
| 448 const net::CompletionCallback& callback) { | |
| 449 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 450 operation->ReadData(entry, index, offset, buf, buf_len); | |
| 451 PostOperation(operation.get()); | |
| 452 } | |
| 453 | |
| 454 void InFlightBackendIO::WriteData(EntryImpl* entry, int index, int offset, | |
| 455 net::IOBuffer* buf, int buf_len, | |
| 456 bool truncate, | |
| 457 const net::CompletionCallback& callback) { | |
| 458 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 459 operation->WriteData(entry, index, offset, buf, buf_len, truncate); | |
| 460 PostOperation(operation.get()); | |
| 461 } | |
| 462 | |
| 463 void InFlightBackendIO::ReadSparseData( | |
| 464 EntryImpl* entry, int64 offset, net::IOBuffer* buf, int buf_len, | |
| 465 const net::CompletionCallback& callback) { | |
| 466 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 467 operation->ReadSparseData(entry, offset, buf, buf_len); | |
| 468 PostOperation(operation.get()); | |
| 469 } | |
| 470 | |
| 471 void InFlightBackendIO::WriteSparseData( | |
| 472 EntryImpl* entry, int64 offset, net::IOBuffer* buf, int buf_len, | |
| 473 const net::CompletionCallback& callback) { | |
| 474 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 475 operation->WriteSparseData(entry, offset, buf, buf_len); | |
| 476 PostOperation(operation.get()); | |
| 477 } | |
| 478 | |
| 479 void InFlightBackendIO::GetAvailableRange( | |
| 480 EntryImpl* entry, int64 offset, int len, int64* start, | |
| 481 const net::CompletionCallback& callback) { | |
| 482 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 483 operation->GetAvailableRange(entry, offset, len, start); | |
| 484 PostOperation(operation.get()); | |
| 485 } | |
| 486 | |
| 487 void InFlightBackendIO::CancelSparseIO(EntryImpl* entry) { | |
| 488 scoped_refptr<BackendIO> operation( | |
| 489 new BackendIO(this, backend_, net::CompletionCallback())); | |
| 490 operation->CancelSparseIO(entry); | |
| 491 PostOperation(operation.get()); | |
| 492 } | |
| 493 | |
| 494 void InFlightBackendIO::ReadyForSparseIO( | |
| 495 EntryImpl* entry, const net::CompletionCallback& callback) { | |
| 496 scoped_refptr<BackendIO> operation(new BackendIO(this, backend_, callback)); | |
| 497 operation->ReadyForSparseIO(entry); | |
| 498 PostOperation(operation.get()); | |
| 499 } | |
| 500 | |
| 501 void InFlightBackendIO::WaitForPendingIO() { | |
| 502 InFlightIO::WaitForPendingIO(); | |
| 503 } | |
| 504 | |
| 505 void InFlightBackendIO::OnOperationComplete(BackgroundIO* operation, | |
| 506 bool cancel) { | |
| 507 BackendIO* op = static_cast<BackendIO*>(operation); | |
| 508 op->OnDone(cancel); | |
| 509 | |
| 510 if (!op->callback().is_null() && (!cancel || op->IsEntryOperation())) | |
| 511 op->callback().Run(op->result()); | |
| 512 } | |
| 513 | |
| 514 void InFlightBackendIO::PostOperation(BackendIO* operation) { | |
| 515 background_thread_->PostTask(FROM_HERE, | |
| 516 base::Bind(&BackendIO::ExecuteOperation, operation)); | |
| 517 OnOperationPosted(operation); | |
| 518 } | |
| 519 | |
| 520 base::WeakPtr<InFlightBackendIO> InFlightBackendIO::GetWeakPtr() { | |
| 521 return ptr_factory_.GetWeakPtr(); | |
| 522 } | |
| 523 | |
| 524 } // namespace | |
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Chromium Code Reviews
Issue 121643003:
Reorganize net/disk_cache into backend specific directories. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src