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| 1 // Copyright 2016 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 "components/leveldb/leveldb_file_thread.h" | |
| 6 | |
| 7 #include <set> | |
| 8 | |
| 9 #include "base/bind.h" | |
| 10 #include "mojo/message_pump/message_pump_mojo.h" | |
| 11 #include "mojo/platform_handle/platform_handle_functions.h" | |
| 12 | |
| 13 namespace leveldb { | |
| 14 | |
| 15 namespace { | |
| 16 const char kLevelDBFileThreadName[] = "LevelDB_File_Thread"; | |
| 17 } // namespace | |
| 18 | |
| 19 struct LevelDBFileThread::OpaqueLock { | |
| 20 filesystem::FilePtr lock_file; | |
| 21 }; | |
| 22 | |
| 23 struct LevelDBFileThread::OpaqueDir { | |
| 24 explicit OpaqueDir( | |
| 25 mojo::InterfacePtrInfo<filesystem::Directory> directory_info) { | |
| 26 directory.Bind(std::move(directory_info)); | |
| 27 } | |
| 28 | |
| 29 filesystem::DirectoryPtr directory; | |
| 30 }; | |
| 31 | |
| 32 struct LevelDBFileThread::WaitableEventDependencies { | |
| 33 WaitableEventDependencies() {} | |
| 34 ~WaitableEventDependencies() {} | |
| 35 std::set<filesystem::DirectoryPtr*> directories; | |
| 36 std::set<filesystem::FilePtr*> files; | |
| 37 }; | |
| 38 | |
| 39 LevelDBFileThread::LevelDBFileThread() | |
| 40 : base::Thread(kLevelDBFileThreadName), | |
| 41 outstanding_opaque_dirs_(0) { | |
| 42 base::Thread::Options options; | |
| 43 options.message_pump_factory = | |
| 44 base::Bind(&mojo::common::MessagePumpMojo::Create); | |
| 45 StartWithOptions(options); | |
| 46 } | |
| 47 | |
| 48 LevelDBFileThread::OpaqueDir* LevelDBFileThread::RegisterDirectory( | |
| 49 filesystem::DirectoryPtr directory) { | |
| 50 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 51 | |
| 52 OpaqueDir* out_dir = nullptr; | |
| 53 | |
| 54 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 55 // from mojo do we return from this. | |
| 56 base::WaitableEvent done_event(false, false); | |
| 57 task_runner()->PostTask( | |
| 58 FROM_HERE, base::Bind(&LevelDBFileThread::RegisterDirectoryImpl, | |
| 59 this, | |
| 60 &done_event, | |
| 61 base::Passed(directory.PassInterface()), | |
| 62 &out_dir)); | |
| 63 done_event.Wait(); | |
| 64 | |
| 65 return out_dir; | |
| 66 } | |
| 67 | |
| 68 void LevelDBFileThread::UnregisterDirectory(OpaqueDir* dir) { | |
| 69 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 70 | |
| 71 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 72 // from mojo do we return from this. | |
| 73 base::WaitableEvent done_event(false, false); | |
| 74 task_runner()->PostTask( | |
| 75 FROM_HERE, base::Bind(&LevelDBFileThread::UnregisterDirectoryImpl, | |
| 76 this, | |
| 77 &done_event, | |
| 78 dir)); | |
| 79 done_event.Wait(); | |
| 80 } | |
| 81 | |
| 82 base::File LevelDBFileThread::OpenFileHandle(OpaqueDir* dir, | |
| 83 const std::string& name, | |
| 84 uint32_t open_flags) { | |
| 85 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 86 | |
| 87 base::File file; | |
| 88 | |
| 89 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 90 // from mojo do we return from this. | |
| 91 base::WaitableEvent done_event(false, false); | |
| 92 task_runner()->PostTask( | |
| 93 FROM_HERE, base::Bind(&LevelDBFileThread::OpenFileHandleImpl, this, | |
| 94 dir, name, &done_event, open_flags, &file)); | |
| 95 done_event.Wait(); | |
| 96 | |
| 97 return file; | |
| 98 } | |
| 99 | |
| 100 filesystem::FileError LevelDBFileThread::SyncDirectory( | |
| 101 OpaqueDir* dir, | |
| 102 const std::string& name) { | |
| 103 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 104 | |
| 105 filesystem::FileError error; | |
| 106 | |
| 107 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 108 // from mojo do we return from this. | |
| 109 base::WaitableEvent done_event(false, false); | |
| 110 task_runner()->PostTask( | |
| 111 FROM_HERE, base::Bind(&LevelDBFileThread::SyncDirectoryImpl, this, | |
| 112 dir, name, &done_event, &error)); | |
| 113 done_event.Wait(); | |
| 114 | |
| 115 return error; | |
| 116 } | |
| 117 | |
| 118 bool LevelDBFileThread::FileExists(OpaqueDir* dir, | |
| 119 const std::string& name) { | |
| 120 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 121 | |
| 122 bool exists; | |
| 123 | |
| 124 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 125 // from mojo do we return from this. | |
| 126 base::WaitableEvent done_event(false, false); | |
| 127 task_runner()->PostTask( | |
| 128 FROM_HERE, base::Bind(&LevelDBFileThread::FileExistsImpl, this, | |
| 129 dir, name, &done_event, &exists)); | |
| 130 done_event.Wait(); | |
| 131 | |
| 132 return exists; | |
| 133 } | |
| 134 | |
| 135 filesystem::FileError LevelDBFileThread::GetChildren( | |
| 136 OpaqueDir* dir, | |
| 137 const std::string& path, | |
| 138 std::vector<std::string>* result) { | |
| 139 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 140 | |
| 141 filesystem::FileError error; | |
| 142 | |
| 143 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 144 // from mojo do we return from this. | |
| 145 base::WaitableEvent done_event(false, false); | |
| 146 task_runner()->PostTask( | |
| 147 FROM_HERE, base::Bind(&LevelDBFileThread::GetChildrenImpl, this, | |
| 148 dir, path, result, &done_event, &error)); | |
| 149 done_event.Wait(); | |
| 150 | |
| 151 return error; | |
| 152 } | |
| 153 | |
| 154 filesystem::FileError LevelDBFileThread::Delete(OpaqueDir* dir, | |
| 155 const std::string& path, | |
| 156 uint32_t delete_flags) { | |
| 157 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 158 | |
| 159 filesystem::FileError error; | |
| 160 | |
| 161 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 162 // from mojo do we return from this. | |
| 163 base::WaitableEvent done_event(false, false); | |
| 164 task_runner()->PostTask(FROM_HERE, | |
| 165 base::Bind(&LevelDBFileThread::DeleteImpl, this, | |
| 166 dir, path, delete_flags, &done_event, | |
| 167 &error)); | |
| 168 done_event.Wait(); | |
| 169 | |
| 170 return error; | |
| 171 } | |
| 172 | |
| 173 filesystem::FileError LevelDBFileThread::CreateDir(OpaqueDir* dir, | |
| 174 const std::string& path) { | |
| 175 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 176 | |
| 177 filesystem::FileError error; | |
| 178 | |
| 179 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 180 // from mojo do we return from this. | |
| 181 base::WaitableEvent done_event(false, false); | |
| 182 task_runner()->PostTask( | |
| 183 FROM_HERE, base::Bind(&LevelDBFileThread::CreateDirImpl, this, | |
| 184 dir, path, &done_event, &error)); | |
| 185 done_event.Wait(); | |
| 186 | |
| 187 return error; | |
| 188 } | |
| 189 | |
| 190 filesystem::FileError LevelDBFileThread::GetFileSize(OpaqueDir* dir, | |
| 191 const std::string& path, | |
| 192 uint64_t* file_size) { | |
| 193 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 194 | |
| 195 filesystem::FileError error; | |
| 196 | |
| 197 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 198 // from mojo do we return from this. | |
| 199 base::WaitableEvent done_event(false, false); | |
| 200 task_runner()->PostTask( | |
| 201 FROM_HERE, base::Bind(&LevelDBFileThread::GetFileSizeImpl, this, | |
| 202 dir, path, file_size, &done_event, &error)); | |
| 203 done_event.Wait(); | |
| 204 | |
| 205 return error; | |
| 206 } | |
| 207 | |
| 208 filesystem::FileError LevelDBFileThread::RenameFile( | |
| 209 OpaqueDir* dir, | |
| 210 const std::string& old_path, | |
| 211 const std::string& new_path) { | |
| 212 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 213 | |
| 214 filesystem::FileError error; | |
| 215 | |
| 216 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 217 // from mojo do we return from this. | |
| 218 base::WaitableEvent done_event(false, false); | |
| 219 task_runner()->PostTask( | |
| 220 FROM_HERE, base::Bind(&LevelDBFileThread::RenameFileImpl, this, | |
| 221 dir, old_path, new_path, &done_event, &error)); | |
| 222 done_event.Wait(); | |
| 223 | |
| 224 return error; | |
| 225 } | |
| 226 | |
| 227 std::pair<filesystem::FileError, LevelDBFileThread::OpaqueLock*> | |
| 228 LevelDBFileThread::LockFile(OpaqueDir* dir, | |
| 229 const std::string& path) { | |
| 230 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 231 | |
| 232 filesystem::FileError error; | |
| 233 OpaqueLock* out_lock = nullptr; | |
| 234 | |
| 235 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 236 // from mojo do we return from this. | |
| 237 base::WaitableEvent done_event(false, false); | |
| 238 task_runner()->PostTask( | |
| 239 FROM_HERE, base::Bind(&LevelDBFileThread::LockFileImpl, this, | |
| 240 dir, path, &done_event, &error, &out_lock)); | |
| 241 done_event.Wait(); | |
| 242 | |
| 243 return std::make_pair(error, out_lock); | |
| 244 } | |
| 245 | |
| 246 filesystem::FileError LevelDBFileThread::UnlockFile(OpaqueLock* lock) { | |
| 247 DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 248 | |
| 249 // Take ownership of the incoming lock so it gets destroyed whatever happens. | |
| 250 scoped_ptr<OpaqueLock> scoped_lock(lock); | |
| 251 | |
| 252 filesystem::FileError error; | |
| 253 | |
| 254 // This proxies to the other thread, which proxies to mojo. Only on the reply | |
| 255 // from mojo do we return from this. | |
| 256 base::WaitableEvent done_event(false, false); | |
| 257 task_runner()->PostTask( | |
| 258 FROM_HERE, base::Bind(&LevelDBFileThread::UnlockFileImpl, this, | |
| 259 base::Passed(&scoped_lock), &done_event, &error)); | |
| 260 done_event.Wait(); | |
| 261 | |
| 262 return error; | |
| 263 } | |
| 264 | |
| 265 LevelDBFileThread::~LevelDBFileThread() { | |
| 266 Stop(); | |
| 267 DCHECK_EQ(0, outstanding_opaque_dirs_); | |
| 268 } | |
| 269 | |
| 270 bool LevelDBFileThread::RegisterDirAndWaitableEvent( | |
| 271 OpaqueDir* dir, | |
| 272 base::WaitableEvent* done_event) { | |
| 273 if (!dir->directory.is_bound()) { | |
| 274 // The directory went out of scope between the PostTask on the other thread | |
| 275 // and now. | |
| 276 done_event->Signal(); | |
| 277 return true; | |
| 278 } | |
| 279 | |
| 280 waitable_event_dependencies_[done_event].directories.insert(&dir->directory); | |
| 281 return false; | |
| 282 } | |
| 283 | |
| 284 void LevelDBFileThread::CompleteWaitableEvent(base::WaitableEvent* done_event) { | |
| 285 // Clean up the dependencies that we no longer care about. | |
| 286 waitable_event_dependencies_.erase(done_event); | |
| 287 done_event->Signal(); | |
| 288 } | |
| 289 | |
| 290 void LevelDBFileThread::OnConnectionError() { | |
| 291 // One of our interface ptrs has become unbound. Signal the event which has | |
| 292 // it as a dependency. | |
| 293 auto it = waitable_event_dependencies_.begin(); | |
| 294 while (it != waitable_event_dependencies_.end()) { | |
| 295 bool unbound_ptr_found = false; | |
| 296 for (const auto* dir : it->second.directories) { | |
| 297 if (!dir->is_bound()) { | |
| 298 unbound_ptr_found = true; | |
| 299 break; | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 if (!unbound_ptr_found) { | |
| 304 for (const auto* file : it->second.files) { | |
| 305 if (!file->is_bound()) { | |
| 306 unbound_ptr_found = true; | |
| 307 break; | |
| 308 } | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 if (unbound_ptr_found) { | |
| 313 base::WaitableEvent* e = it->first; | |
| 314 it = waitable_event_dependencies_.erase(it); | |
| 315 e->Signal(); | |
| 316 } else { | |
| 317 ++it; | |
| 318 } | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 void LevelDBFileThread::OnSimpleComplete(base::WaitableEvent* done_event, | |
| 323 filesystem::FileError* out_error, | |
| 324 filesystem::FileError in_error) { | |
| 325 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 326 *out_error = in_error; | |
| 327 CompleteWaitableEvent(done_event); | |
| 328 } | |
| 329 | |
| 330 void LevelDBFileThread::RegisterDirectoryImpl( | |
| 331 base::WaitableEvent* done_event, | |
| 332 mojo::InterfacePtrInfo<filesystem::Directory> directory_info, | |
| 333 OpaqueDir** out_dir) { | |
| 334 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 335 | |
| 336 // Take the Directory pipe and bind it on this thread. | |
| 337 *out_dir = new OpaqueDir(std::move(directory_info)); | |
| 338 outstanding_opaque_dirs_++; | |
| 339 | |
| 340 // Register the connection error handler for the resulting DirectoryPtr | |
| 341 (*out_dir)->directory.set_connection_error_handler( | |
| 342 base::Bind(&LevelDBFileThread::OnConnectionError, this)); | |
| 343 | |
| 344 done_event->Signal(); | |
| 345 } | |
| 346 | |
| 347 void LevelDBFileThread::UnregisterDirectoryImpl( | |
| 348 base::WaitableEvent* done_event, | |
| 349 OpaqueDir* dir) { | |
| 350 // Only delete the directories on the thread that owns them. | |
| 351 delete dir; | |
| 352 outstanding_opaque_dirs_--; | |
| 353 CompleteWaitableEvent(done_event); | |
| 354 } | |
| 355 | |
| 356 void LevelDBFileThread::OpenFileHandleImpl(OpaqueDir* dir, | |
| 357 std::string name, | |
| 358 base::WaitableEvent* done_event, | |
| 359 uint32_t open_flags, | |
| 360 base::File* out_file) { | |
| 361 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 362 | |
| 363 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 364 return; | |
| 365 | |
| 366 dir->directory->OpenFileHandle( | |
| 367 mojo::String::From(name), open_flags, | |
| 368 base::Bind(&LevelDBFileThread::OnOpenFileHandleComplete, this, done_event, | |
| 369 out_file)); | |
| 370 } | |
| 371 | |
| 372 void LevelDBFileThread::OnOpenFileHandleComplete( | |
| 373 base::WaitableEvent* done_event, | |
| 374 base::File* output_file, | |
| 375 filesystem::FileError err, | |
| 376 mojo::ScopedHandle handle) { | |
| 377 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 378 | |
| 379 if (err != filesystem::FileError::OK) { | |
| 380 *output_file = base::File(static_cast<base::File::Error>(err)); | |
| 381 } else { | |
| 382 MojoPlatformHandle platform_handle; | |
| 383 MojoResult extract_result = | |
| 384 MojoExtractPlatformHandle(handle.release().value(), &platform_handle); | |
| 385 | |
| 386 if (extract_result == MOJO_RESULT_OK) { | |
| 387 *output_file = base::File(platform_handle); | |
| 388 } else { | |
| 389 NOTREACHED(); | |
| 390 *output_file = base::File(base::File::Error::FILE_ERROR_FAILED); | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 CompleteWaitableEvent(done_event); | |
| 395 } | |
| 396 | |
| 397 void LevelDBFileThread::SyncDirectoryImpl(OpaqueDir* dir, | |
| 398 std::string name, | |
| 399 base::WaitableEvent* done_event, | |
| 400 filesystem::FileError* out_error) { | |
| 401 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 402 | |
| 403 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 404 return; | |
| 405 | |
| 406 // Step one: open the directory |name| from the toplevel directory. | |
| 407 scoped_ptr<filesystem::DirectoryPtr> target(new filesystem::DirectoryPtr); | |
| 408 | |
| 409 dir->directory->OpenDirectory( | |
| 410 name, GetProxy(target.get()), | |
| 411 filesystem::kFlagRead | filesystem::kFlagWrite, | |
| 412 base::Bind(&LevelDBFileThread::OnSyncDirctoryOpened, this, | |
| 413 base::Passed(&target), done_event, out_error)); | |
| 414 } | |
| 415 | |
| 416 void LevelDBFileThread::OnSyncDirctoryOpened( | |
| 417 scoped_ptr<filesystem::DirectoryPtr> dir, | |
| 418 base::WaitableEvent* done_event, | |
| 419 filesystem::FileError* out_error, | |
| 420 filesystem::FileError in_error) { | |
| 421 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 422 | |
| 423 if (in_error != filesystem::FileError::OK) { | |
| 424 *out_error = in_error; | |
| 425 CompleteWaitableEvent(done_event); | |
| 426 return; | |
| 427 } | |
| 428 | |
| 429 // Add a dependency between the new directory we opened and the current | |
| 430 // waitable event. | |
| 431 dir->set_connection_error_handler( | |
| 432 base::Bind(&LevelDBFileThread::OnConnectionError, this)); | |
| 433 waitable_event_dependencies_[done_event].directories.insert(dir.get()); | |
| 434 | |
| 435 // We move the object into the bind before we call. Copy to the stack. | |
| 436 filesystem::DirectoryPtr* local = dir.get(); | |
| 437 (*local)->Flush(base::Bind(&LevelDBFileThread::OnSyncDirectoryComplete, this, | |
| 438 base::Passed(&dir), done_event, out_error)); | |
| 439 } | |
| 440 | |
| 441 void LevelDBFileThread::OnSyncDirectoryComplete( | |
| 442 scoped_ptr<filesystem::DirectoryPtr> dir, | |
| 443 base::WaitableEvent* done_event, | |
| 444 filesystem::FileError* out_error, | |
| 445 filesystem::FileError in_error) { | |
| 446 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 447 *out_error = in_error; | |
| 448 CompleteWaitableEvent(done_event); | |
| 449 } | |
| 450 | |
| 451 void LevelDBFileThread::FileExistsImpl(OpaqueDir* dir, | |
| 452 std::string name, | |
| 453 base::WaitableEvent* done_event, | |
| 454 bool* exists) { | |
| 455 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 456 | |
| 457 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 458 return; | |
| 459 | |
| 460 dir->directory->Exists( | |
| 461 mojo::String::From(name), | |
| 462 base::Bind(&LevelDBFileThread::OnFileExistsComplete, this, | |
| 463 done_event, exists)); | |
| 464 } | |
| 465 | |
| 466 void LevelDBFileThread::OnFileExistsComplete(base::WaitableEvent* done_event, | |
| 467 bool* exists, | |
| 468 filesystem::FileError err, | |
| 469 bool in_exists) { | |
| 470 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 471 *exists = in_exists; | |
| 472 CompleteWaitableEvent(done_event); | |
| 473 } | |
| 474 | |
| 475 void LevelDBFileThread::GetChildrenImpl(OpaqueDir* dir, | |
| 476 std::string name, | |
| 477 std::vector<std::string>* contents, | |
| 478 base::WaitableEvent* done_event, | |
| 479 filesystem::FileError* out_error) { | |
| 480 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 481 | |
| 482 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 483 return; | |
| 484 | |
| 485 // Step one: open the directory |name| from the toplevel directory. | |
| 486 scoped_ptr<filesystem::DirectoryPtr> target(new filesystem::DirectoryPtr); | |
| 487 mojo::InterfaceRequest<filesystem::Directory> proxy = GetProxy(target.get()); | |
| 488 dir->directory->OpenDirectory( | |
| 489 name, std::move(proxy), filesystem::kFlagRead | filesystem::kFlagWrite, | |
| 490 base::Bind(&LevelDBFileThread::OnGetChildrenOpened, this, | |
| 491 base::Passed(&target), contents, done_event, out_error)); | |
| 492 } | |
| 493 | |
| 494 void LevelDBFileThread::OnGetChildrenOpened( | |
| 495 scoped_ptr<filesystem::DirectoryPtr> dir, | |
| 496 std::vector<std::string>* contents, | |
| 497 base::WaitableEvent* done_event, | |
| 498 filesystem::FileError* out_error, | |
| 499 filesystem::FileError in_error) { | |
| 500 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 501 | |
| 502 if (in_error != filesystem::FileError::OK) { | |
| 503 *out_error = in_error; | |
| 504 CompleteWaitableEvent(done_event); | |
| 505 return; | |
| 506 } | |
| 507 | |
| 508 // Add a dependency between the new directory we opened and the current | |
| 509 // waitable event. | |
| 510 dir->set_connection_error_handler( | |
| 511 base::Bind(&LevelDBFileThread::OnConnectionError, this)); | |
| 512 waitable_event_dependencies_[done_event].directories.insert(dir.get()); | |
| 513 | |
| 514 // We move the object into the bind before we call. Copy to the stack. | |
| 515 filesystem::DirectoryPtr* local = dir.get(); | |
| 516 (*local)->Read(base::Bind(&LevelDBFileThread::OnGetChildrenComplete, this, | |
| 517 base::Passed(&dir), contents, done_event, | |
| 518 out_error)); | |
| 519 } | |
| 520 | |
| 521 void LevelDBFileThread::OnGetChildrenComplete( | |
| 522 scoped_ptr<filesystem::DirectoryPtr> dir, | |
| 523 std::vector<std::string>* out_contents, | |
| 524 base::WaitableEvent* done_event, | |
| 525 filesystem::FileError* out_error, | |
| 526 filesystem::FileError in_error, | |
| 527 mojo::Array<filesystem::DirectoryEntryPtr> directory_contents) { | |
| 528 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 529 | |
| 530 if (!directory_contents.is_null()) { | |
| 531 for (size_t i = 0; i < directory_contents.size(); ++i) | |
| 532 out_contents->push_back(directory_contents[i]->name.To<std::string>()); | |
| 533 } | |
| 534 | |
| 535 *out_error = in_error; | |
| 536 CompleteWaitableEvent(done_event); | |
| 537 } | |
| 538 | |
| 539 void LevelDBFileThread::DeleteImpl(OpaqueDir* dir, | |
| 540 std::string name, | |
| 541 uint32_t delete_flags, | |
| 542 base::WaitableEvent* done_event, | |
| 543 filesystem::FileError* out_error) { | |
| 544 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 545 | |
| 546 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 547 return; | |
| 548 | |
| 549 dir->directory->Delete(mojo::String::From(name), delete_flags, | |
| 550 base::Bind(&LevelDBFileThread::OnSimpleComplete, this, | |
| 551 done_event, out_error)); | |
| 552 } | |
| 553 | |
| 554 void LevelDBFileThread::CreateDirImpl(OpaqueDir* dir, | |
| 555 std::string name, | |
| 556 base::WaitableEvent* done_event, | |
| 557 filesystem::FileError* out_error) { | |
| 558 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 559 | |
| 560 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 561 return; | |
| 562 | |
| 563 dir->directory->OpenDirectory( | |
| 564 name, nullptr, | |
| 565 filesystem::kFlagRead | filesystem::kFlagWrite | filesystem::kFlagCreate, | |
| 566 base::Bind(&LevelDBFileThread::OnSimpleComplete, this, done_event, | |
| 567 out_error)); | |
| 568 } | |
| 569 | |
| 570 void LevelDBFileThread::GetFileSizeImpl(OpaqueDir* dir, | |
| 571 const std::string& path, | |
| 572 uint64_t* file_size, | |
| 573 base::WaitableEvent* done_event, | |
| 574 filesystem::FileError* out_error) { | |
| 575 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 576 | |
| 577 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 578 return; | |
| 579 | |
| 580 dir->directory->StatFile( | |
| 581 path, base::Bind(&LevelDBFileThread::OnGetFileSizeImpl, this, file_size, | |
| 582 done_event, out_error)); | |
| 583 } | |
| 584 | |
| 585 void LevelDBFileThread::OnGetFileSizeImpl( | |
| 586 uint64_t* file_size, | |
| 587 base::WaitableEvent* done_event, | |
| 588 filesystem::FileError* out_error, | |
| 589 filesystem::FileError in_error, | |
| 590 filesystem::FileInformationPtr file_info) { | |
| 591 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 592 if (file_info) | |
| 593 *file_size = file_info->size; | |
| 594 *out_error = in_error; | |
| 595 CompleteWaitableEvent(done_event); | |
| 596 } | |
| 597 | |
| 598 void LevelDBFileThread::RenameFileImpl(OpaqueDir* dir, | |
| 599 const std::string& old_path, | |
| 600 const std::string& new_path, | |
| 601 base::WaitableEvent* done_event, | |
| 602 filesystem::FileError* out_error) { | |
| 603 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 604 | |
| 605 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 606 return; | |
| 607 | |
| 608 dir->directory->Rename(mojo::String::From(old_path), | |
| 609 mojo::String::From(new_path), | |
| 610 base::Bind(&LevelDBFileThread::OnSimpleComplete, this, | |
| 611 done_event, out_error)); | |
| 612 } | |
| 613 | |
| 614 void LevelDBFileThread::LockFileImpl(OpaqueDir* dir, | |
| 615 const std::string& path, | |
| 616 base::WaitableEvent* done_event, | |
| 617 filesystem::FileError* out_error, | |
| 618 OpaqueLock** out_lock) { | |
| 619 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 620 | |
| 621 if (RegisterDirAndWaitableEvent(dir, done_event)) | |
| 622 return; | |
| 623 | |
| 624 // Since a lock is associated with a file descriptor, we need to open and | |
| 625 // have a persistent file on the other side of the connection. | |
| 626 scoped_ptr<filesystem::FilePtr> target(new filesystem::FilePtr); | |
| 627 mojo::InterfaceRequest<filesystem::File> proxy = GetProxy(target.get()); | |
| 628 dir->directory->OpenFile( | |
| 629 mojo::String::From(path), std::move(proxy), | |
| 630 filesystem::kFlagOpenAlways | filesystem::kFlagRead | | |
| 631 filesystem::kFlagWrite, | |
| 632 base::Bind(&LevelDBFileThread::OnOpenLockFileComplete, this, | |
| 633 base::Passed(&target), done_event, out_error, out_lock)); | |
| 634 } | |
| 635 | |
| 636 void LevelDBFileThread::OnOpenLockFileComplete( | |
| 637 scoped_ptr<filesystem::FilePtr> file, | |
| 638 base::WaitableEvent* done_event, | |
| 639 filesystem::FileError* out_error, | |
| 640 OpaqueLock** out_lock, | |
| 641 filesystem::FileError in_error) { | |
| 642 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 643 | |
| 644 if (in_error != filesystem::FileError::OK) { | |
| 645 *out_error = in_error; | |
| 646 CompleteWaitableEvent(done_event); | |
| 647 return; | |
| 648 } | |
| 649 | |
| 650 // Add a dependency between the new file we opened and the current waitable | |
| 651 // event. (This dependency will get cleared in OnLockFileComplete if we | |
| 652 // complete this call safely.) | |
| 653 file->set_connection_error_handler( | |
| 654 base::Bind(&LevelDBFileThread::OnConnectionError, this)); | |
| 655 waitable_event_dependencies_[done_event].files.insert(file.get()); | |
| 656 | |
| 657 filesystem::FilePtr* local = file.get(); | |
| 658 (*local)->Lock(base::Bind(&LevelDBFileThread::OnLockFileComplete, this, | |
| 659 base::Passed(&file), done_event, out_error, | |
| 660 out_lock)); | |
| 661 } | |
| 662 | |
| 663 void LevelDBFileThread::OnLockFileComplete(scoped_ptr<filesystem::FilePtr> file, | |
| 664 base::WaitableEvent* done_event, | |
| 665 filesystem::FileError* out_error, | |
| 666 OpaqueLock** out_lock, | |
| 667 filesystem::FileError in_error) { | |
| 668 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 669 | |
| 670 *out_error = in_error; | |
| 671 | |
| 672 if (in_error == filesystem::FileError::OK) { | |
| 673 OpaqueLock* l = new OpaqueLock; | |
| 674 l->lock_file = std::move(*file); | |
| 675 *out_lock = l; | |
| 676 } | |
| 677 | |
| 678 CompleteWaitableEvent(done_event); | |
| 679 } | |
| 680 | |
| 681 void LevelDBFileThread::UnlockFileImpl(scoped_ptr<OpaqueLock> lock, | |
| 682 base::WaitableEvent* done_event, | |
| 683 filesystem::FileError* out_error) { | |
| 684 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 685 | |
| 686 OpaqueLock* local = lock.get(); | |
| 687 local->lock_file->Unlock(base::Bind(&LevelDBFileThread::OnUnlockFileCompleted, | |
| 688 this, base::Passed(&lock), done_event, | |
| 689 out_error)); | |
| 690 } | |
| 691 | |
| 692 void LevelDBFileThread::OnUnlockFileCompleted(scoped_ptr<OpaqueLock> lock, | |
| 693 base::WaitableEvent* done_event, | |
| 694 filesystem::FileError* out_error, | |
| 695 filesystem::FileError in_error) { | |
| 696 // We're passed the OpauqeLock here for ownership reasons, but it's going to | |
| 697 // get destructed on its own here. | |
| 698 DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId()); | |
| 699 *out_error = in_error; | |
| 700 CompleteWaitableEvent(done_event); | |
| 701 } | |
| 702 | |
| 703 void LevelDBFileThread::Init() { | |
| 704 } | |
| 705 | |
| 706 void LevelDBFileThread::CleanUp() { | |
| 707 } | |
| 708 | |
| 709 } // namespace leveldb | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1839823002:
mojo leveldb: Remove the created file thread. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master