| 336 | #endif |
| 337 | |
| 338 | void TFileTest::TestCache() { |
| 339 | #ifdef _linux_ |
| 340 | { // create file in /tmp, current dir could be tmpfs which does not support fadvise |
| 341 | TFile file(MakeTempName("/tmp"), OpenAlways | Transient | RdWr | NoReadAhead); |
| 342 | |
| 343 | struct statfs fs; |
| 344 | if (!fstatfs(file.GetHandle(), &fs) && fs.f_type == TMPFS_MAGIC) { |
| 345 | return; |
| 346 | } |
| 347 | |
| 348 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 0); |
| 349 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(0, 0), 0); |
| 350 | |
| 351 | file.Resize(7); |
| 352 | file.PrefetchCache(); |
| 353 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 7); |
| 354 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(3, 2), 2); |
| 355 | |
| 356 | file.FlushCache(); |
| 357 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 7); |
| 358 | |
| 359 | file.EvictCache(); |
| 360 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 0); |
| 361 | |
| 362 | file.PrefetchCache(); |
| 363 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 7); |
| 364 | |
| 365 | file.Resize(12345); |
| 366 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 4096); |
| 367 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(4096, 0), 0); |
| 368 | |
| 369 | file.PrefetchCache(); |
| 370 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 12345); |
| 371 | |
| 372 | file.FlushCache(); |
| 373 | file.EvictCache(); |
| 374 | UNIT_ASSERT_LE(file.CountCache(), 0); |
| 375 | |
| 376 | file.Resize(33333333); |
| 377 | file.PrefetchCache(11111111, 11111111); |
| 378 | UNIT_ASSERT_GE(file.CountCache(), 11111111); |
| 379 | |
| 380 | UNIT_ASSERT_LE(file.CountCache(0, 11111111), 1111111); |
| 381 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(11111111, 11111111), 11111111); |
| 382 | UNIT_ASSERT_LE(file.CountCache(22222222, 11111111), 1111111); |
| 383 | |
| 384 | file.FlushCache(11111111, 11111111); |
| 385 | UNIT_ASSERT_GE(file.CountCache(), 11111111); |
| 386 | |
| 387 | // first and last incomplete pages could stay in cache |
| 388 | file.EvictCache(11111111, 11111111); |
| 389 | UNIT_ASSERT_LT(file.CountCache(11111111, 11111111), 4096 * 2); |
| 390 | |
| 391 | file.EvictCache(); |
| 392 | UNIT_ASSERT_VALUES_EQUAL(file.CountCache(), 0); |
| 393 | } |
| 394 | #else |
| 395 | { |
nothing calls this directly
no test coverage detected