1# 2010 April 13 2# 3# The author disclaims copyright to this source code. In place of 4# a legal notice, here is a blessing: 5# 6# May you do good and not evil. 7# May you find forgiveness for yourself and forgive others. 8# May you share freely, never taking more than you give. 9# 10#*********************************************************************** 11# This file implements regression tests for SQLite library. The 12# focus of this file is testing the operation of the library in 13# "PRAGMA journal_mode=WAL" mode. 14# 15 16set testdir [file dirname $argv0] 17source $testdir/tester.tcl 18source $testdir/lock_common.tcl 19source $testdir/malloc_common.tcl 20source $testdir/wal_common.tcl 21 22set testprefix wal 23 24ifcapable !wal {finish_test ; return } 25test_set_config_pagecache 0 0 26 27proc reopen_db {} { 28 catch { db close } 29 forcedelete test.db test.db-wal test.db-wal-summary 30 sqlite3_wal db test.db 31} 32 33set ::blobcnt 0 34proc blob {nByte} { 35 incr ::blobcnt 36 return [string range [string repeat "${::blobcnt}x" $nByte] 1 $nByte] 37} 38 39proc sqlite3_wal {args} { 40 eval sqlite3 $args 41 [lindex $args 0] eval { PRAGMA auto_vacuum = 0 } 42 [lindex $args 0] eval { PRAGMA page_size = 1024 } 43 [lindex $args 0] eval { PRAGMA journal_mode = wal } 44 [lindex $args 0] eval { PRAGMA synchronous = normal } 45 [lindex $args 0] function blob blob 46} 47 48proc log_deleted {logfile} { 49 return [expr [file exists $logfile]==0] 50} 51 52# 53# These are 'warm-body' tests used while developing the WAL code. They 54# serve to prove that a few really simple cases work: 55# 56# wal-1.*: Read and write the database. 57# wal-2.*: Test MVCC with one reader, one writer. 58# wal-3.*: Test transaction rollback. 59# wal-4.*: Test savepoint/statement rollback. 60# wal-5.*: Test the temp database. 61# wal-6.*: Test creating databases with different page sizes. 62# 63# 64# 65do_test wal-0.1 { 66 execsql { PRAGMA auto_vacuum = 0 } 67 execsql { PRAGMA synchronous = normal } 68 execsql { PRAGMA journal_mode = wal } 69} {wal} 70do_test wal-0.2 { 71 file size test.db 72} {1024} 73 74do_test wal-1.0 { 75 execsql { 76 BEGIN; 77 CREATE TABLE t1(a, b); 78 } 79 list [file exists test.db-journal] \ 80 [file exists test.db-wal] \ 81 [file size test.db] 82} {0 1 1024} 83do_test wal-1.1 { 84 execsql COMMIT 85 list [file exists test.db-journal] [file exists test.db-wal] 86} {0 1} 87do_test wal-1.2 { 88 # There are now two pages in the log. 89 file size test.db-wal 90} [wal_file_size 2 1024] 91 92do_test wal-1.3 { 93 execsql { SELECT * FROM sqlite_master } 94} {table t1 t1 2 {CREATE TABLE t1(a, b)}} 95 96do_test wal-1.4 { 97 execsql { INSERT INTO t1 VALUES(1, 2) } 98 execsql { INSERT INTO t1 VALUES(3, 4) } 99 execsql { INSERT INTO t1 VALUES(5, 6) } 100 execsql { INSERT INTO t1 VALUES(7, 8) } 101 execsql { INSERT INTO t1 VALUES(9, 10) } 102} {} 103 104do_test wal-1.5 { 105 execsql { SELECT * FROM t1 } 106} {1 2 3 4 5 6 7 8 9 10} 107 108do_test wal-2.1 { 109 sqlite3_wal db2 ./test.db 110 execsql { BEGIN; SELECT * FROM t1 } db2 111} {1 2 3 4 5 6 7 8 9 10} 112 113do_test wal-2.2 { 114 execsql { INSERT INTO t1 VALUES(11, 12) } 115 execsql { SELECT * FROM t1 } 116} {1 2 3 4 5 6 7 8 9 10 11 12} 117 118do_test wal-2.3 { 119 execsql { SELECT * FROM t1 } db2 120} {1 2 3 4 5 6 7 8 9 10} 121 122do_test wal-2.4 { 123 execsql { INSERT INTO t1 VALUES(13, 14) } 124 execsql { SELECT * FROM t1 } 125} {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 126 127do_test wal-2.5 { 128 execsql { SELECT * FROM t1 } db2 129} {1 2 3 4 5 6 7 8 9 10} 130 131do_test wal-2.6 { 132 execsql { COMMIT; SELECT * FROM t1 } db2 133} {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 134 135do_test wal-3.1 { 136 execsql { BEGIN; DELETE FROM t1 } 137 execsql { SELECT * FROM t1 } 138} {} 139do_test wal-3.2 { 140 execsql { SELECT * FROM t1 } db2 141} {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 142do_test wal-3.3 { 143 execsql { ROLLBACK } 144 execsql { SELECT * FROM t1 } 145} {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 146db2 close 147 148#------------------------------------------------------------------------- 149# The following tests, wal-4.*, test that savepoints work with WAL 150# databases. 151# 152do_test wal-4.1 { 153 execsql { 154 DELETE FROM t1; 155 BEGIN; 156 INSERT INTO t1 VALUES('a', 'b'); 157 SAVEPOINT sp; 158 INSERT INTO t1 VALUES('c', 'd'); 159 SELECT * FROM t1; 160 } 161} {a b c d} 162do_test wal-4.2 { 163 execsql { 164 ROLLBACK TO sp; 165 SELECT * FROM t1; 166 } 167} {a b} 168do_test wal-4.3 { 169 execsql { 170 COMMIT; 171 SELECT * FROM t1; 172 } 173} {a b} 174 175do_test wal-4.4.1 { 176 db close 177 sqlite3 db test.db 178 db func blob blob 179 list [execsql { SELECT * FROM t1 }] [file size test.db-wal] 180} {{a b} 0} 181do_test wal-4.4.2 { 182 execsql { PRAGMA cache_size = 10 } 183 execsql { 184 CREATE TABLE t2(a, b); 185 INSERT INTO t2 VALUES(blob(400), blob(400)); 186 SAVEPOINT tr; 187 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 2 */ 188 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 4 */ 189 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 8 */ 190 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 16 */ 191 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 32 */ 192 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 2 */ 193 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 4 */ 194 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 8 */ 195 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 16 */ 196 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 32 */ 197 SELECT count(*) FROM t2; 198 } 199} {32} 200do_test wal-4.4.3 { 201 execsql { ROLLBACK TO tr } 202} {} 203do_test wal-4.4.4 { 204 set logsize [file size test.db-wal] 205 execsql { 206 INSERT INTO t1 VALUES('x', 'y'); 207 RELEASE tr; 208 } 209 expr { $logsize == [file size test.db-wal] } 210} {1} 211do_test wal-4.4.5 { 212 execsql { SELECT count(*) FROM t2 } 213} {1} 214do_test wal-4.4.6 { 215 forcecopy test.db test2.db 216 forcecopy test.db-wal test2.db-wal 217 sqlite3 db2 test2.db 218 execsql { SELECT count(*) FROM t2 ; SELECT count(*) FROM t1 } db2 219} {1 2} 220do_test wal-4.4.7 { 221 execsql { PRAGMA integrity_check } db2 222} {ok} 223db2 close 224 225do_test wal-4.5.1 { 226 reopen_db 227 db func blob blob 228 execsql { 229 PRAGMA journal_mode = WAL; 230 CREATE TABLE t1(a, b); 231 INSERT INTO t1 VALUES('a', 'b'); 232 } 233 sqlite3 db test.db 234 db func blob blob 235 list [execsql { SELECT * FROM t1 }] [file size test.db-wal] 236} {{a b} 0} 237do_test wal-4.5.2 { 238 execsql { PRAGMA cache_size = 10 } 239 execsql { 240 CREATE TABLE t2(a, b); 241 BEGIN; 242 INSERT INTO t2 VALUES(blob(400), blob(400)); 243 SAVEPOINT tr; 244 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 2 */ 245 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 4 */ 246 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 8 */ 247 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 16 */ 248 INSERT INTO t2 SELECT blob(400), blob(400) FROM t2; /* 32 */ 249 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 2 */ 250 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 4 */ 251 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 8 */ 252 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 16 */ 253 INSERT INTO t1 SELECT blob(400), blob(400) FROM t1; /* 32 */ 254 SELECT count(*) FROM t2; 255 } 256} {32} 257do_test wal-4.5.3 { 258 execsql { ROLLBACK TO tr } 259} {} 260do_test wal-4.5.4 { 261 set logsize [file size test.db-wal] 262 execsql { 263 INSERT INTO t1 VALUES('x', 'y'); 264 RELEASE tr; 265 COMMIT; 266 } 267 expr { $logsize == [file size test.db-wal] } 268} {1} 269do_test wal-4.5.5 { 270 execsql { SELECT count(*) FROM t2 ; SELECT count(*) FROM t1 } 271} {1 2} 272do_test wal-4.5.6 { 273 forcecopy test.db test2.db 274 forcecopy test.db-wal test2.db-wal 275 sqlite3 db2 test2.db 276 execsql { SELECT count(*) FROM t2 ; SELECT count(*) FROM t1 } db2 277} {1 2} 278do_test wal-4.5.7 { 279 execsql { PRAGMA integrity_check } db2 280} {ok} 281db2 close 282 283do_test wal-4.6.1 { 284 execsql { 285 DELETE FROM t2; 286 PRAGMA wal_checkpoint; 287 BEGIN; 288 INSERT INTO t2 VALUES('w', 'x'); 289 SAVEPOINT save; 290 INSERT INTO t2 VALUES('y', 'z'); 291 ROLLBACK TO save; 292 COMMIT; 293 } 294 execsql { SELECT * FROM t2 } 295} {w x} 296 297 298reopen_db 299do_test wal-5.1 { 300 execsql { 301 CREATE TEMP TABLE t2(a, b); 302 INSERT INTO t2 VALUES(1, 2); 303 } 304} {} 305do_test wal-5.2 { 306 execsql { 307 BEGIN; 308 INSERT INTO t2 VALUES(3, 4); 309 SELECT * FROM t2; 310 } 311} {1 2 3 4} 312do_test wal-5.3 { 313 execsql { 314 ROLLBACK; 315 SELECT * FROM t2; 316 } 317} {1 2} 318do_test wal-5.4 { 319 execsql { 320 CREATE TEMP TABLE t3(x UNIQUE); 321 BEGIN; 322 INSERT INTO t2 VALUES(3, 4); 323 INSERT INTO t3 VALUES('abc'); 324 } 325 catchsql { INSERT INTO t3 VALUES('abc') } 326} {1 {UNIQUE constraint failed: t3.x}} 327do_test wal-5.5 { 328 execsql { 329 COMMIT; 330 SELECT * FROM t2; 331 } 332} {1 2 3 4} 333db close 334 335foreach sector {512 4096} { 336 sqlite3_simulate_device -sectorsize $sector 337 foreach pgsz {512 1024 2048 4096} { 338 forcedelete test.db test.db-wal 339 do_test wal-6.$sector.$pgsz.1 { 340 sqlite3 db test.db -vfs devsym 341 execsql " 342 PRAGMA page_size = $pgsz; 343 PRAGMA auto_vacuum = 0; 344 PRAGMA journal_mode = wal; 345 " 346 execsql " 347 CREATE TABLE t1(a, b); 348 INSERT INTO t1 VALUES(1, 2); 349 " 350 db close 351 file size test.db 352 } [expr $pgsz*2] 353 354 do_test wal-6.$sector.$pgsz.2 { 355 log_deleted test.db-wal 356 } {1} 357 } 358} 359 360do_test wal-7.1 { 361 forcedelete test.db test.db-wal 362 sqlite3_wal db test.db 363 execsql { 364 PRAGMA page_size = 1024; 365 CREATE TABLE t1(a, b); 366 INSERT INTO t1 VALUES(1, 2); 367 } 368 list [file size test.db] [file size test.db-wal] 369} [list 1024 [wal_file_size 3 1024]] 370do_test wal-7.2 { 371 execsql { PRAGMA wal_checkpoint } 372 list [file size test.db] [file size test.db-wal] 373} [list 2048 [wal_file_size 3 1024]] 374 375# Execute some transactions in auto-vacuum mode to test database file 376# truncation. 377# 378do_test wal-8.1 { 379 reopen_db 380 catch { db close } 381 forcedelete test.db test.db-wal 382 383 sqlite3 db test.db 384 db function blob blob 385 execsql { 386 PRAGMA auto_vacuum = 1; 387 PRAGMA journal_mode = wal; 388 PRAGMA auto_vacuum; 389 } 390} {wal 1} 391do_test wal-8.2 { 392 execsql { 393 PRAGMA page_size = 1024; 394 CREATE TABLE t1(x); 395 INSERT INTO t1 VALUES(blob(900)); 396 INSERT INTO t1 VALUES(blob(900)); 397 INSERT INTO t1 SELECT blob(900) FROM t1; /* 4 */ 398 INSERT INTO t1 SELECT blob(900) FROM t1; /* 8 */ 399 INSERT INTO t1 SELECT blob(900) FROM t1; /* 16 */ 400 INSERT INTO t1 SELECT blob(900) FROM t1; /* 32 */ 401 INSERT INTO t1 SELECT blob(900) FROM t1; /* 64 */ 402 PRAGMA wal_checkpoint; 403 } 404 file size test.db 405} [expr 68*1024] 406do_test wal-8.3 { 407 execsql { 408 DELETE FROM t1 WHERE rowid<54; 409 PRAGMA wal_checkpoint; 410 } 411 file size test.db 412} [expr 14*1024] 413 414# Run some "warm-body" tests to ensure that log-summary files with more 415# than 256 entries (log summaries that contain index blocks) work Ok. 416# 417do_test wal-9.1 { 418 reopen_db 419 execsql { 420 PRAGMA cache_size=2000; 421 CREATE TABLE t1(x PRIMARY KEY); 422 INSERT INTO t1 VALUES(blob(900)); 423 INSERT INTO t1 VALUES(blob(900)); 424 INSERT INTO t1 SELECT blob(900) FROM t1; /* 4 */ 425 INSERT INTO t1 SELECT blob(900) FROM t1; /* 8 */ 426 INSERT INTO t1 SELECT blob(900) FROM t1; /* 16 */ 427 INSERT INTO t1 SELECT blob(900) FROM t1; /* 32 */ 428 INSERT INTO t1 SELECT blob(900) FROM t1; /* 64 */ 429 INSERT INTO t1 SELECT blob(900) FROM t1; /* 128 */ 430 INSERT INTO t1 SELECT blob(900) FROM t1; /* 256 */ 431 } 432 file size test.db 433} 1024 434do_test wal-9.2 { 435 sqlite3_wal db2 test.db 436 execsql {PRAGMA integrity_check } db2 437} {ok} 438 439do_test wal-9.3 { 440 forcedelete test2.db test2.db-wal 441 copy_file test.db test2.db 442 copy_file test.db-wal test2.db-wal 443 sqlite3_wal db3 test2.db 444 execsql {PRAGMA integrity_check } db3 445} {ok} 446db3 close 447 448do_test wal-9.4 { 449 execsql { PRAGMA wal_checkpoint } 450 db2 close 451 sqlite3_wal db2 test.db 452 execsql {PRAGMA integrity_check } db2 453} {ok} 454 455foreach handle {db db2 db3} { catch { $handle close } } 456unset handle 457 458#------------------------------------------------------------------------- 459# The following block of tests - wal-10.* - test that the WAL locking 460# scheme works in simple cases. This block of tests is run twice. Once 461# using multiple connections in the address space of the current process, 462# and once with all connections except one running in external processes. 463# 464do_multiclient_test tn { 465 466 # Initialize the database schema and contents. 467 # 468 do_test wal-10.$tn.1 { 469 execsql { 470 PRAGMA auto_vacuum = 0; 471 PRAGMA journal_mode = wal; 472 CREATE TABLE t1(a, b); 473 INSERT INTO t1 VALUES(1, 2); 474 SELECT * FROM t1; 475 } 476 } {wal 1 2} 477 478 # Open a transaction and write to the database using [db]. Check that [db2] 479 # is still able to read the snapshot before the transaction was opened. 480 # 481 do_test wal-10.$tn.2 { 482 execsql { BEGIN; INSERT INTO t1 VALUES(3, 4); } 483 sql2 {SELECT * FROM t1} 484 } {1 2} 485 486 # Have [db] commit the transaction. Check that [db2] is now seeing the 487 # new, updated snapshot. 488 # 489 do_test wal-10.$tn.3 { 490 execsql { COMMIT } 491 sql2 {SELECT * FROM t1} 492 } {1 2 3 4} 493 494 # Have [db2] open a read transaction. Then write to the db via [db]. Check 495 # that [db2] is still seeing the original snapshot. Then read with [db3]. 496 # [db3] should see the newly committed data. 497 # 498 do_test wal-10.$tn.4 { 499 sql2 { BEGIN ; SELECT * FROM t1} 500 } {1 2 3 4} 501 do_test wal-10.$tn.5 { 502 execsql { INSERT INTO t1 VALUES(5, 6); } 503 sql2 {SELECT * FROM t1} 504 } {1 2 3 4} 505 do_test wal-10.$tn.6 { 506 sql3 {SELECT * FROM t1} 507 } {1 2 3 4 5 6} 508 do_test wal-10.$tn.7 { 509 sql2 COMMIT 510 } {} 511 512 # Have [db2] open a write transaction. Then attempt to write to the 513 # database via [db]. This should fail (writer lock cannot be obtained). 514 # 515 # Then open a read-transaction with [db]. Commit the [db2] transaction 516 # to disk. Verify that [db] still cannot write to the database (because 517 # it is reading an old snapshot). 518 # 519 # Close the current [db] transaction. Open a new one. [db] can now write 520 # to the database (as it is not locked and [db] is reading the latest 521 # snapshot). 522 # 523 do_test wal-10.$tn.7 { 524 sql2 { BEGIN; INSERT INTO t1 VALUES(7, 8) ; } 525 catchsql { INSERT INTO t1 VALUES(9, 10) } 526 } {1 {database is locked}} 527 do_test wal-10.$tn.8 { 528 execsql { BEGIN ; SELECT * FROM t1 } 529 } {1 2 3 4 5 6} 530 do_test wal-10.$tn.9 { 531 sql2 COMMIT 532 catchsql { INSERT INTO t1 VALUES(9, 10) } 533 } {1 {database is locked}} 534 do_test wal-10.$tn.10 { 535 execsql { COMMIT } 536 execsql { BEGIN } 537 execsql { INSERT INTO t1 VALUES(9, 10) } 538 execsql { COMMIT } 539 execsql { SELECT * FROM t1 } 540 } {1 2 3 4 5 6 7 8 9 10} 541 542 # Open a read transaction with [db2]. Check that this prevents [db] from 543 # checkpointing the database. But not from writing to it. 544 # 545 do_test wal-10.$tn.11 { 546 sql2 { BEGIN; SELECT * FROM t1 } 547 } {1 2 3 4 5 6 7 8 9 10} 548 do_test wal-10.$tn.12 { 549 catchsql { PRAGMA wal_checkpoint } 550 } {0 {0 7 7}} ;# Reader no longer block checkpoints 551 do_test wal-10.$tn.13 { 552 execsql { INSERT INTO t1 VALUES(11, 12) } 553 sql2 {SELECT * FROM t1} 554 } {1 2 3 4 5 6 7 8 9 10} 555 556 # Writers do not block checkpoints any more either. 557 # 558 do_test wal-10.$tn.14 { 559 catchsql { PRAGMA wal_checkpoint } 560 } {0 {0 8 7}} 561 562 # The following series of test cases used to verify another blocking 563 # case in WAL - a case which no longer blocks. 564 # 565 do_test wal-10.$tn.15 { 566 sql2 { COMMIT; BEGIN; SELECT * FROM t1; } 567 } {1 2 3 4 5 6 7 8 9 10 11 12} 568 do_test wal-10.$tn.16 { 569 catchsql { PRAGMA wal_checkpoint } 570 } {0 {0 8 8}} 571 do_test wal-10.$tn.17 { 572 execsql { PRAGMA wal_checkpoint } 573 } {0 8 8} 574 do_test wal-10.$tn.18 { 575 sql3 { BEGIN; SELECT * FROM t1 } 576 } {1 2 3 4 5 6 7 8 9 10 11 12} 577 do_test wal-10.$tn.19 { 578 catchsql { INSERT INTO t1 VALUES(13, 14) } 579 } {0 {}} 580 do_test wal-10.$tn.20 { 581 execsql { SELECT * FROM t1 } 582 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 583 do_test wal-10.$tn.21 { 584 sql3 COMMIT 585 sql2 COMMIT 586 } {} 587 do_test wal-10.$tn.22 { 588 execsql { SELECT * FROM t1 } 589 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 590 591 # Another series of tests that used to demonstrate blocking behavior 592 # but which now work. 593 # 594 do_test wal-10.$tn.23 { 595 execsql { PRAGMA wal_checkpoint } 596 } {0 9 9} 597 do_test wal-10.$tn.24 { 598 sql2 { BEGIN; SELECT * FROM t1; } 599 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14} 600 do_test wal-10.$tn.25 { 601 execsql { PRAGMA wal_checkpoint } 602 } {0 9 9} 603 do_test wal-10.$tn.26 { 604 catchsql { INSERT INTO t1 VALUES(15, 16) } 605 } {0 {}} 606 do_test wal-10.$tn.27 { 607 sql3 { INSERT INTO t1 VALUES(17, 18) } 608 } {} 609 do_test wal-10.$tn.28 { 610 code3 { 611 set ::STMT [sqlite3_prepare db3 "SELECT * FROM t1" -1 TAIL] 612 sqlite3_step $::STMT 613 } 614 execsql { SELECT * FROM t1 } 615 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18} 616 do_test wal-10.$tn.29 { 617 execsql { INSERT INTO t1 VALUES(19, 20) } 618 catchsql { PRAGMA wal_checkpoint } 619 } {0 {0 3 0}} 620 do_test wal-10.$tn.30 { 621 code3 { sqlite3_finalize $::STMT } 622 execsql { PRAGMA wal_checkpoint } 623 } {0 3 0} 624 625 # At one point, if a reader failed to upgrade to a writer because it 626 # was reading an old snapshot, the write-locks were not being released. 627 # Test that this bug has been fixed. 628 # 629 do_test wal-10.$tn.31 { 630 sql2 COMMIT 631 execsql { BEGIN ; SELECT * FROM t1 } 632 sql2 { INSERT INTO t1 VALUES(21, 22) } 633 catchsql { INSERT INTO t1 VALUES(23, 24) } 634 } {1 {database is locked}} 635 do_test wal-10.$tn.32 { 636 # This statement would fail when the bug was present. 637 sql2 { INSERT INTO t1 VALUES(23, 24) } 638 } {} 639 do_test wal-10.$tn.33 { 640 execsql { SELECT * FROM t1 ; COMMIT } 641 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20} 642 do_test wal-10.$tn.34 { 643 execsql { SELECT * FROM t1 } 644 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24} 645 646 # Test that if a checkpointer cannot obtain the required locks, it 647 # releases all locks before returning a busy error. 648 # 649 do_test wal-10.$tn.35 { 650 execsql { 651 DELETE FROM t1; 652 INSERT INTO t1 VALUES('a', 'b'); 653 INSERT INTO t1 VALUES('c', 'd'); 654 } 655 sql2 { 656 BEGIN; 657 SELECT * FROM t1; 658 } 659 } {a b c d} 660 do_test wal-10.$tn.36 { 661 catchsql { PRAGMA wal_checkpoint } 662 } {0 {0 8 8}} 663 do_test wal-10.$tn.36 { 664 sql3 { INSERT INTO t1 VALUES('e', 'f') } 665 sql2 { SELECT * FROM t1 } 666 } {a b c d} 667 do_test wal-10.$tn.37 { 668 sql2 COMMIT 669 execsql { PRAGMA wal_checkpoint } 670 } {0 9 9} 671} 672 673#------------------------------------------------------------------------- 674# This block of tests, wal-11.*, test that nothing goes terribly wrong 675# if frames must be written to the log file before a transaction is 676# committed (in order to free up memory). 677# 678do_test wal-11.1 { 679 reopen_db 680 execsql { 681 PRAGMA cache_size = 10; 682 PRAGMA page_size = 1024; 683 CREATE TABLE t1(x PRIMARY KEY); 684 } 685 list [expr [file size test.db]/1024] [expr [file size test.db-wal]/1044] 686} {1 3} 687do_test wal-11.2 { 688 execsql { PRAGMA wal_checkpoint } 689 list [expr [file size test.db]/1024] [file size test.db-wal] 690} [list 3 [wal_file_size 3 1024]] 691do_test wal-11.3 { 692 execsql { INSERT INTO t1 VALUES( blob(900) ) } 693 list [expr [file size test.db]/1024] [file size test.db-wal] 694} [list 3 [wal_file_size 4 1024]] 695 696do_test wal-11.4 { 697 execsql { 698 BEGIN; 699 INSERT INTO t1 SELECT blob(900) FROM t1; -- 2 700 INSERT INTO t1 SELECT blob(900) FROM t1; -- 4 701 INSERT INTO t1 SELECT blob(900) FROM t1; -- 8 702 INSERT INTO t1 SELECT blob(900) FROM t1; -- 16 703 } 704 list [expr [file size test.db]/1024] [file size test.db-wal] 705} [list 3 [wal_file_size 32 1024]] 706do_test wal-11.5 { 707 execsql { 708 SELECT count(*) FROM t1; 709 PRAGMA integrity_check; 710 } 711} {16 ok} 712do_test wal-11.6 { 713 execsql COMMIT 714 list [expr [file size test.db]/1024] [file size test.db-wal] 715} [list 3 [wal_file_size 41 1024]] 716do_test wal-11.7 { 717 execsql { 718 SELECT count(*) FROM t1; 719 PRAGMA integrity_check; 720 } 721} {16 ok} 722do_test wal-11.8 { 723 execsql { PRAGMA wal_checkpoint } 724 list [expr [file size test.db]/1024] [file size test.db-wal] 725} [list 37 [wal_file_size 41 1024]] 726do_test wal-11.9 { 727 db close 728 list [expr [file size test.db]/1024] [log_deleted test.db-wal] 729} {37 1} 730sqlite3_wal db test.db 731set nWal 39 732if {[permutation]!="mmap"} {set nWal 37} 733ifcapable !mmap {set nWal 37} 734do_test wal-11.10 { 735 execsql { 736 PRAGMA cache_size = 10; 737 BEGIN; 738 INSERT INTO t1 SELECT blob(900) FROM t1; -- 32 739 SELECT count(*) FROM t1; 740 } 741 list [expr [file size test.db]/1024] [file size test.db-wal] 742} [list 37 [wal_file_size $nWal 1024]] 743do_test wal-11.11 { 744 execsql { 745 SELECT count(*) FROM t1; 746 ROLLBACK; 747 SELECT count(*) FROM t1; 748 } 749} {32 16} 750do_test wal-11.12 { 751 list [expr [file size test.db]/1024] [file size test.db-wal] 752} [list 37 [wal_file_size $nWal 1024]] 753do_test wal-11.13 { 754 execsql { 755 INSERT INTO t1 VALUES( blob(900) ); 756 SELECT count(*) FROM t1; 757 PRAGMA integrity_check; 758 } 759} {17 ok} 760do_test wal-11.14 { 761 list [expr [file size test.db]/1024] [file size test.db-wal] 762} [list 37 [wal_file_size $nWal 1024]] 763 764 765#------------------------------------------------------------------------- 766# This block of tests, wal-12.*, tests the fix for a problem that 767# could occur if a log that is a prefix of an older log is written 768# into a reused log file. 769# 770reopen_db 771do_test wal-12.1 { 772 execsql { 773 PRAGMA page_size = 1024; 774 CREATE TABLE t1(x, y); 775 CREATE TABLE t2(x, y); 776 INSERT INTO t1 VALUES('A', 1); 777 } 778 list [expr [file size test.db]/1024] [file size test.db-wal] 779} [list 1 [wal_file_size 5 1024]] 780do_test wal-12.2 { 781 db close 782 sqlite3 db test.db 783 execsql { 784 PRAGMA synchronous = normal; 785 UPDATE t1 SET y = 0 WHERE x = 'A'; 786 } 787 list [expr [file size test.db]/1024] [expr [file size test.db-wal]/1044] 788} {3 1} 789do_test wal-12.3 { 790 execsql { INSERT INTO t2 VALUES('B', 1) } 791 list [expr [file size test.db]/1024] [expr [file size test.db-wal]/1044] 792} {3 2} 793do_test wal-12.4 { 794 forcecopy test.db test2.db 795 forcecopy test.db-wal test2.db-wal 796 sqlite3_wal db2 test2.db 797 execsql { SELECT * FROM t2 } db2 798} {B 1} 799db2 close 800do_test wal-12.5 { 801 execsql { 802 PRAGMA wal_checkpoint; 803 UPDATE t2 SET y = 2 WHERE x = 'B'; 804 PRAGMA wal_checkpoint; 805 UPDATE t1 SET y = 1 WHERE x = 'A'; 806 PRAGMA wal_checkpoint; 807 UPDATE t1 SET y = 0 WHERE x = 'A'; 808 } 809 execsql { SELECT * FROM t2 } 810} {B 2} 811do_test wal-12.6 { 812 forcecopy test.db test2.db 813 forcecopy test.db-wal test2.db-wal 814 sqlite3_wal db2 test2.db 815 execsql { SELECT * FROM t2 } db2 816} {B 2} 817db2 close 818db close 819 820#------------------------------------------------------------------------- 821# Test large log summaries. 822# 823# In this case "large" usually means a log file that requires a wal-index 824# mapping larger than 64KB (the default initial allocation). A 64KB wal-index 825# is large enough for a log file that contains approximately 13100 frames. 826# So the following tests create logs containing at least this many frames. 827# 828# wal-13.1.*: This test case creates a very large log file within the 829# file-system (around 200MB). The log file does not contain 830# any valid frames. Test that the database file can still be 831# opened and queried, and that the invalid log file causes no 832# problems. 833# 834# wal-13.2.*: Test that a process may create a large log file and query 835# the database (including the log file that it itself created). 836# 837# wal-13.3.*: Test that if a very large log file is created, and then a 838# second connection is opened on the database file, it is possible 839# to query the database (and the very large log) using the 840# second connection. 841# 842# wal-13.4.*: Same test as wal-13.3.*. Except in this case the second 843# connection is opened by an external process. 844# 845do_test wal-13.1.1 { 846 list [file exists test.db] [file exists test.db-wal] 847} {1 0} 848do_test wal-13.1.2 { 849 set fd [open test.db-wal w] 850 seek $fd [expr 200*1024*1024] 851 puts $fd "" 852 close $fd 853 sqlite3 db test.db 854 execsql { SELECT * FROM t2 } 855} {B 2} 856do_test wal-13.1.3 { 857 db close 858 file exists test.db-wal 859} {0} 860 861do_test wal-13.2.1 { 862 sqlite3 db test.db 863 execsql { SELECT count(*) FROM t2 } 864} {1} 865do_test wal-13.2.2 { 866 db function blob blob 867 for {set i 0} {$i < 16} {incr i} { 868 execsql { INSERT INTO t2 SELECT blob(400), blob(400) FROM t2 } 869 } 870 execsql { SELECT count(*) FROM t2 } 871} [expr int(pow(2, 16))] 872do_test wal-13.2.3 { 873 expr [file size test.db-wal] > [wal_file_size 33000 1024] 874} 1 875 876do_multiclient_test tn { 877 incr tn 2 878 879 do_test wal-13.$tn.0 { 880 sql1 { 881 PRAGMA journal_mode = WAL; 882 CREATE TABLE t1(x); 883 INSERT INTO t1 SELECT randomblob(800); 884 } 885 sql1 { SELECT count(*) FROM t1 } 886 } {1} 887 888 for {set ii 1} {$ii<16} {incr ii} { 889 do_test wal-13.$tn.$ii.a { 890 sql2 { INSERT INTO t1 SELECT randomblob(800) FROM t1 } 891 sql2 { SELECT count(*) FROM t1 } 892 } [expr (1<<$ii)] 893 do_test wal-13.$tn.$ii.b { 894 sql1 { SELECT count(*) FROM t1 } 895 } [expr (1<<$ii)] 896 do_test wal-13.$tn.$ii.c { 897 sql1 { SELECT count(*) FROM t1 } 898 } [expr (1<<$ii)] 899 do_test wal-13.$tn.$ii.d { 900 sql1 { PRAGMA integrity_check } 901 } {ok} 902 } 903} 904 905#------------------------------------------------------------------------- 906# Check a fun corruption case has been fixed. 907# 908# The problem was that after performing a checkpoint using a connection 909# that had an out-of-date pager-cache, the next time the connection was 910# used it did not realize the cache was out-of-date and proceeded to 911# operate with an inconsistent cache. Leading to corruption. 912# 913catch { db close } 914catch { db2 close } 915catch { db3 close } 916forcedelete test.db test.db-wal 917sqlite3 db test.db 918sqlite3 db2 test.db 919do_test wal-14 { 920 execsql { 921 PRAGMA journal_mode = WAL; 922 CREATE TABLE t1(a PRIMARY KEY, b); 923 INSERT INTO t1 VALUES(randomblob(10), randomblob(100)); 924 INSERT INTO t1 SELECT randomblob(10), randomblob(100) FROM t1; 925 INSERT INTO t1 SELECT randomblob(10), randomblob(100) FROM t1; 926 INSERT INTO t1 SELECT randomblob(10), randomblob(100) FROM t1; 927 } 928 929 db2 eval { 930 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 931 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 932 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 933 INSERT INTO t1 SELECT randomblob(10), randomblob(100); 934 } 935 936 # After executing the "PRAGMA wal_checkpoint", connection [db] was being 937 # left with an inconsistent cache. Running the CREATE INDEX statement 938 # in this state led to database corruption. 939 catchsql { 940 PRAGMA wal_checkpoint; 941 CREATE INDEX i1 on t1(b); 942 } 943 944 db2 eval { PRAGMA integrity_check } 945} {ok} 946 947catch { db close } 948catch { db2 close } 949 950#------------------------------------------------------------------------- 951# The following block of tests - wal-15.* - focus on testing the 952# implementation of the sqlite3_wal_checkpoint() interface. 953# 954forcedelete test.db test.db-wal 955sqlite3 db test.db 956do_test wal-15.1 { 957 execsql { 958 PRAGMA auto_vacuum = 0; 959 PRAGMA page_size = 1024; 960 PRAGMA journal_mode = WAL; 961 } 962 execsql { 963 CREATE TABLE t1(a, b); 964 INSERT INTO t1 VALUES(1, 2); 965 } 966} {} 967 968# Test that an error is returned if the database name is not recognized 969# 970do_test wal-15.2.1 { 971 sqlite3_wal_checkpoint db aux 972} {SQLITE_ERROR} 973do_test wal-15.2.2 { 974 sqlite3_errcode db 975} {SQLITE_ERROR} 976do_test wal-15.2.3 { 977 sqlite3_errmsg db 978} {unknown database: aux} 979 980# Test that an error is returned if an attempt is made to checkpoint 981# if a transaction is open on the database. 982# 983do_test wal-15.3.1 { 984 execsql { 985 BEGIN; 986 INSERT INTO t1 VALUES(3, 4); 987 } 988 sqlite3_wal_checkpoint db main 989} {SQLITE_LOCKED} 990do_test wal-15.3.2 { 991 sqlite3_errcode db 992} {SQLITE_LOCKED} 993do_test wal-15.3.3 { 994 sqlite3_errmsg db 995} {database table is locked} 996 997# Earlier versions returned an error is returned if the db cannot be 998# checkpointed because of locks held by another connection. Check that 999# this is no longer the case. 1000# 1001sqlite3 db2 test.db 1002do_test wal-15.4.1 { 1003 execsql { 1004 BEGIN; 1005 SELECT * FROM t1; 1006 } db2 1007} {1 2} 1008do_test wal-15.4.2 { 1009 execsql { COMMIT } 1010 sqlite3_wal_checkpoint db 1011} {SQLITE_OK} 1012do_test wal-15.4.3 { 1013 sqlite3_errmsg db 1014} {not an error} 1015 1016# After [db2] drops its lock, [db] may checkpoint the db. 1017# 1018do_test wal-15.4.4 { 1019 execsql { COMMIT } db2 1020 sqlite3_wal_checkpoint db 1021} {SQLITE_OK} 1022do_test wal-15.4.5 { 1023 sqlite3_errmsg db 1024} {not an error} 1025do_test wal-15.4.6 { 1026 file size test.db 1027} [expr 1024*2] 1028 1029catch { db2 close } 1030catch { db close } 1031 1032#------------------------------------------------------------------------- 1033# The following block of tests - wal-16.* - test that if a NULL pointer or 1034# an empty string is passed as the second argument of the wal_checkpoint() 1035# API, an attempt is made to checkpoint all attached databases. 1036# 1037foreach {tn ckpt_cmd ckpt_res ckpt_main ckpt_aux} { 1038 1 {sqlite3_wal_checkpoint db} SQLITE_OK 1 1 1039 2 {sqlite3_wal_checkpoint db ""} SQLITE_OK 1 1 1040 3 {db eval "PRAGMA wal_checkpoint"} {0 10 10} 1 1 1041 1042 4 {sqlite3_wal_checkpoint db main} SQLITE_OK 1 0 1043 5 {sqlite3_wal_checkpoint db aux} SQLITE_OK 0 1 1044 6 {sqlite3_wal_checkpoint db temp} SQLITE_OK 0 0 1045 7 {db eval "PRAGMA main.wal_checkpoint"} {0 10 10} 1 0 1046 8 {db eval "PRAGMA aux.wal_checkpoint"} {0 13 13} 0 1 1047 9 {db eval "PRAGMA temp.wal_checkpoint"} {0 -1 -1} 0 0 1048} { 1049 do_test wal-16.$tn.1 { 1050 forcedelete test2.db test2.db-wal test2.db-journal 1051 forcedelete test.db test.db-wal test.db-journal 1052 1053 sqlite3 db test.db 1054 execsql { 1055 ATTACH 'test2.db' AS aux; 1056 PRAGMA main.auto_vacuum = 0; 1057 PRAGMA aux.auto_vacuum = 0; 1058 PRAGMA main.journal_mode = WAL; 1059 PRAGMA aux.journal_mode = WAL; 1060 PRAGMA main.synchronous = NORMAL; 1061 PRAGMA aux.synchronous = NORMAL; 1062 } 1063 } {wal wal} 1064 1065 do_test wal-16.$tn.2 { 1066 execsql { 1067 CREATE TABLE main.t1(a, b, PRIMARY KEY(a, b)); 1068 CREATE TABLE aux.t2(a, b, PRIMARY KEY(a, b)); 1069 1070 INSERT INTO t2 VALUES(1, randomblob(1000)); 1071 INSERT INTO t2 VALUES(2, randomblob(1000)); 1072 INSERT INTO t1 SELECT * FROM t2; 1073 } 1074 1075 list [file size test.db] [file size test.db-wal] 1076 } [list [expr 1*1024] [wal_file_size 10 1024]] 1077 do_test wal-16.$tn.3 { 1078 list [file size test2.db] [file size test2.db-wal] 1079 } [list [expr 1*1024] [wal_file_size 13 1024]] 1080 1081 do_test wal-16.$tn.4 [list eval $ckpt_cmd] $ckpt_res 1082 1083 do_test wal-16.$tn.5 { 1084 list [file size test.db] [file size test.db-wal] 1085 } [list [expr ($ckpt_main ? 7 : 1)*1024] [wal_file_size 10 1024]] 1086 1087 do_test wal-16.$tn.6 { 1088 list [file size test2.db] [file size test2.db-wal] 1089 } [list [expr ($ckpt_aux ? 7 : 1)*1024] [wal_file_size 13 1024]] 1090 1091 catch { db close } 1092} 1093 1094#------------------------------------------------------------------------- 1095# The following tests - wal-17.* - attempt to verify that the correct 1096# number of "padding" frames are appended to the log file when a transaction 1097# is committed in synchronous=FULL mode. 1098# 1099# Do this by creating a database that uses 512 byte pages. Then writing 1100# a transaction that modifies 171 pages. In synchronous=NORMAL mode, this 1101# produces a log file of: 1102# 1103# 32 + (24+512)*171 = 90312 bytes. 1104# 1105# Slightly larger than 11*8192 = 90112 bytes. 1106# 1107# Run the test using various different sector-sizes. In each case, the 1108# WAL code should write the 90300 bytes of log file containing the 1109# transaction, then append as may frames as are required to extend the 1110# log file so that no part of the next transaction will be written into 1111# a disk-sector used by transaction just committed. 1112# 1113set old_pending_byte [sqlite3_test_control_pending_byte 0x10000000] 1114catch { db close } 1115foreach {tn sectorsize logsize} " 1116 1 128 [wal_file_size 172 512] 1117 2 256 [wal_file_size 172 512] 1118 3 512 [wal_file_size 172 512] 1119 4 1024 [wal_file_size 172 512] 1120 5 2048 [wal_file_size 172 512] 1121 6 4096 [wal_file_size 176 512] 1122 7 8192 [wal_file_size 184 512] 1123" { 1124 forcedelete test.db test.db-wal test.db-journal 1125 sqlite3_simulate_device -sectorsize $sectorsize 1126 sqlite3 db test.db -vfs devsym 1127 1128 do_test wal-17.$tn.1 { 1129 execsql { 1130 PRAGMA auto_vacuum = 0; 1131 PRAGMA page_size = 512; 1132 PRAGMA cache_size = -2000; 1133 PRAGMA journal_mode = WAL; 1134 PRAGMA synchronous = FULL; 1135 } 1136 execsql { 1137 BEGIN; 1138 CREATE TABLE t(x); 1139 } 1140 for {set i 0} {$i<166} {incr i} { 1141 execsql { INSERT INTO t VALUES(randomblob(400)) } 1142 } 1143 execsql COMMIT 1144 1145 file size test.db-wal 1146 } $logsize 1147 1148 do_test wal-17.$tn.2 { 1149 file size test.db 1150 } 512 1151 1152 do_test wal-17.$tn.3 { 1153 db close 1154 file size test.db 1155 } [expr 512*171] 1156} 1157sqlite3_test_control_pending_byte $old_pending_byte 1158 1159#------------------------------------------------------------------------- 1160# This test - wal-18.* - verifies a couple of specific conditions that 1161# may be encountered while recovering a log file are handled correctly: 1162# 1163# wal-18.1.* When the first 32-bits of a frame checksum is correct but 1164# the second 32-bits are false, and 1165# 1166# wal-18.2.* When the page-size field that occurs at the start of a log 1167# file is a power of 2 greater than 16384 or smaller than 512. 1168# 1169forcedelete test.db test.db-wal test.db-journal 1170do_test wal-18.0 { 1171 sqlite3 db test.db 1172 execsql { 1173 PRAGMA page_size = 1024; 1174 PRAGMA auto_vacuum = 0; 1175 PRAGMA journal_mode = WAL; 1176 PRAGMA synchronous = OFF; 1177 1178 CREATE TABLE t1(a, b, UNIQUE(a, b)); 1179 INSERT INTO t1 VALUES(0, 0); 1180 PRAGMA wal_checkpoint; 1181 1182 INSERT INTO t1 VALUES(1, 2); -- frames 1 and 2 1183 INSERT INTO t1 VALUES(3, 4); -- frames 3 and 4 1184 INSERT INTO t1 VALUES(5, 6); -- frames 5 and 6 1185 } 1186 1187 forcecopy test.db testX.db 1188 forcecopy test.db-wal testX.db-wal 1189 db close 1190 list [file size testX.db] [file size testX.db-wal] 1191} [list [expr 3*1024] [wal_file_size 6 1024]] 1192 1193unset -nocomplain nFrame result 1194foreach {nFrame result} { 1195 0 {0 0} 1196 1 {0 0} 1197 2 {0 0 1 2} 1198 3 {0 0 1 2} 1199 4 {0 0 1 2 3 4} 1200 5 {0 0 1 2 3 4} 1201 6 {0 0 1 2 3 4 5 6} 1202} { 1203 do_test wal-18.1.$nFrame { 1204 forcecopy testX.db test.db 1205 forcecopy testX.db-wal test.db-wal 1206 1207 hexio_write test.db-wal [expr 24 + $nFrame*(24+1024) + 20] 00000000 1208 1209 sqlite3 db test.db 1210 execsql { 1211 SELECT * FROM t1; 1212 PRAGMA integrity_check; 1213 } 1214 } [concat $result ok] 1215 db close 1216} 1217 1218proc randomblob {pgsz} { 1219 sqlite3 rbdb :memory: 1220 set blob [rbdb one {SELECT randomblob($pgsz)}] 1221 rbdb close 1222 set blob 1223} 1224 1225proc logcksum {ckv1 ckv2 blob} { 1226 upvar $ckv1 c1 1227 upvar $ckv2 c2 1228 1229 # Since the magic number at the start of the -wal file header is 1230 # 931071618 that indicates that the content should always be read as 1231 # little-endian. 1232 # 1233 set scanpattern i* 1234 1235 binary scan $blob $scanpattern values 1236 foreach {v1 v2} $values { 1237 set c1 [expr {($c1 + $v1 + $c2)&0xFFFFFFFF}] 1238 set c2 [expr {($c2 + $v2 + $c1)&0xFFFFFFFF}] 1239 } 1240} 1241 1242forcecopy test.db testX.db 1243foreach {tn pgsz works} { 1244 1 128 0 1245 2 256 0 1246 3 512 1 1247 4 1024 1 1248 5 2048 1 1249 6 4096 1 1250 7 8192 1 1251 8 16384 1 1252 9 32768 1 1253 10 65536 1 1254 11 131072 0 1255 11 1016 0 1256} { 1257 1258 if {$::SQLITE_MAX_PAGE_SIZE < $pgsz} { 1259 set works 0 1260 } 1261 1262 for {set pg 1} {$pg <= 3} {incr pg} { 1263 forcecopy testX.db test.db 1264 forcedelete test.db-wal 1265 1266 # Check that the database now exists and consists of three pages. And 1267 # that there is no associated wal file. 1268 # 1269 do_test wal-18.2.$tn.$pg.1 { file exists test.db-wal } 0 1270 do_test wal-18.2.$tn.$pg.2 { file exists test.db } 1 1271 do_test wal-18.2.$tn.$pg.3 { file size test.db } [expr 1024*3] 1272 1273 do_test wal-18.2.$tn.$pg.4 { 1274 1275 # Create a wal file that contains a single frame (database page 1276 # number $pg) with the commit flag set. The frame checksum is 1277 # correct, but the contents of the database page are corrupt. 1278 # 1279 # The page-size in the log file header is set to $pgsz. If the 1280 # WAL code considers $pgsz to be a valid SQLite database file page-size, 1281 # the database will be corrupt (because the garbage frame contents 1282 # will be treated as valid content). If $pgsz is invalid (too small 1283 # or too large), the db will not be corrupt as the log file will 1284 # be ignored. 1285 # 1286 set walhdr [binary format IIIIII 931071618 3007000 $pgsz 1234 22 23] 1287 set framebody [randomblob $pgsz] 1288 set framehdr [binary format IIII $pg 5 22 23] 1289 set c1 0 1290 set c2 0 1291 logcksum c1 c2 $walhdr 1292 1293 append walhdr [binary format II $c1 $c2] 1294 logcksum c1 c2 [string range $framehdr 0 7] 1295 logcksum c1 c2 $framebody 1296 set framehdr [binary format IIIIII $pg 5 22 23 $c1 $c2] 1297 1298 set fd [open test.db-wal w] 1299 fconfigure $fd -encoding binary -translation binary 1300 puts -nonewline $fd $walhdr 1301 puts -nonewline $fd $framehdr 1302 puts -nonewline $fd $framebody 1303 close $fd 1304 1305 file size test.db-wal 1306 } [wal_file_size 1 $pgsz] 1307 1308 do_test wal-18.2.$tn.$pg.5 { 1309 sqlite3 db test.db 1310 set rc [catch { db one {PRAGMA integrity_check} } msg] 1311 expr { $rc!=0 || $msg!="ok" } 1312 } $works 1313 1314 db close 1315 } 1316} 1317 1318#------------------------------------------------------------------------- 1319# The following test - wal-19.* - fixes a bug that was present during 1320# development. 1321# 1322# When a database connection in WAL mode is closed, it attempts an 1323# EXCLUSIVE lock on the database file. If the lock is obtained, the 1324# connection knows that it is the last connection to disconnect from 1325# the database, so it runs a checkpoint operation. The bug was that 1326# the connection was not updating its private copy of the wal-index 1327# header before doing so, meaning that it could checkpoint an old 1328# snapshot. 1329# 1330do_test wal-19.1 { 1331 forcedelete test.db test.db-wal test.db-journal 1332 sqlite3 db test.db 1333 sqlite3 db2 test.db 1334 execsql { 1335 PRAGMA journal_mode = WAL; 1336 CREATE TABLE t1(a, b); 1337 INSERT INTO t1 VALUES(1, 2); 1338 INSERT INTO t1 VALUES(3, 4); 1339 } 1340 execsql { SELECT * FROM t1 } db2 1341} {1 2 3 4} 1342do_test wal-19.2 { 1343 execsql { 1344 INSERT INTO t1 VALUES(5, 6); 1345 SELECT * FROM t1; 1346 } 1347} {1 2 3 4 5 6} 1348do_test wal-19.3 { 1349 db close 1350 db2 close 1351 file exists test.db-wal 1352} {0} 1353do_test wal-19.4 { 1354 # When the bug was present, the following was returning {1 2 3 4} only, 1355 # as [db2] had an out-of-date copy of the wal-index header when it was 1356 # closed. 1357 # 1358 sqlite3 db test.db 1359 execsql { SELECT * FROM t1 } 1360} {1 2 3 4 5 6} 1361 1362#------------------------------------------------------------------------- 1363# This test - wal-20.* - uses two connections. One in this process and 1364# the other in an external process. The procedure is: 1365# 1366# 1. Using connection 1, create the database schema. 1367# 1368# 2. Using connection 2 (in an external process), add so much 1369# data to the database without checkpointing that a wal-index 1370# larger than 64KB is required. 1371# 1372# 3. Using connection 1, checkpoint the database. Make sure all 1373# the data is present and the database is not corrupt. 1374# 1375# At one point, SQLite was failing to grow the mapping of the wal-index 1376# file in step 3 and the checkpoint was corrupting the database file. 1377# 1378do_test wal-20.1 { 1379 catch {db close} 1380 forcedelete test.db test.db-wal test.db-journal 1381 sqlite3 db test.db 1382 execsql { 1383 PRAGMA journal_mode = WAL; 1384 CREATE TABLE t1(x); 1385 INSERT INTO t1 VALUES(randomblob(900)); 1386 SELECT count(*) FROM t1; 1387 } 1388} {wal 1} 1389do_test wal-20.2 { 1390 set ::buddy [launch_testfixture] 1391 testfixture $::buddy { 1392 sqlite3 db test.db 1393 db transaction { db eval { 1394 PRAGMA wal_autocheckpoint = 0; 1395 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 2 */ 1396 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4 */ 1397 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 8 */ 1398 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 16 */ 1399 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 32 */ 1400 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 64 */ 1401 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 128 */ 1402 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 256 */ 1403 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 512 */ 1404 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 1024 */ 1405 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 2048 */ 1406 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4096 */ 1407 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 8192 */ 1408 INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 16384 */ 1409 } } 1410 } 1411} {0} 1412do_test wal-20.3 { 1413 close $::buddy 1414 execsql { PRAGMA wal_checkpoint } 1415 execsql { SELECT count(*) FROM t1 } 1416} {16384} 1417do_test wal-20.4 { 1418 db close 1419 sqlite3 db test.db 1420 execsql { SELECT count(*) FROM t1 } 1421} {16384} 1422integrity_check wal-20.5 1423 1424catch { db2 close } 1425catch { db close } 1426 1427do_test wal-21.1 { 1428 faultsim_delete_and_reopen 1429 execsql { 1430 PRAGMA journal_mode = WAL; 1431 CREATE TABLE t1(a, b); 1432 INSERT INTO t1 VALUES(1, 2); 1433 INSERT INTO t1 VALUES(3, 4); 1434 INSERT INTO t1 VALUES(5, 6); 1435 INSERT INTO t1 VALUES(7, 8); 1436 INSERT INTO t1 VALUES(9, 10); 1437 INSERT INTO t1 VALUES(11, 12); 1438 } 1439} {wal} 1440do_test wal-21.2 { 1441 execsql { 1442 PRAGMA cache_size = 10; 1443 PRAGMA wal_checkpoint; 1444 BEGIN; 1445 SAVEPOINT s; 1446 INSERT INTO t1 SELECT randomblob(900), randomblob(900) FROM t1; 1447 ROLLBACK TO s; 1448 COMMIT; 1449 } 1450 execsql { SELECT * FROM t1 } 1451} {1 2 3 4 5 6 7 8 9 10 11 12} 1452do_test wal-21.3 { 1453 execsql { PRAGMA integrity_check } 1454} {ok} 1455 1456#------------------------------------------------------------------------- 1457# Test reading and writing of databases with different page-sizes. 1458# 1459foreach pgsz {512 1024 2048 4096 8192 16384 32768 65536} { 1460 do_multiclient_test tn [string map [list %PGSZ% $pgsz] { 1461 do_test wal-22.%PGSZ%.$tn.1 { 1462 sql1 { 1463 PRAGMA main.page_size = %PGSZ%; 1464 PRAGMA auto_vacuum = 0; 1465 PRAGMA journal_mode = WAL; 1466 CREATE TABLE t1(x UNIQUE); 1467 INSERT INTO t1 SELECT randomblob(800); 1468 INSERT INTO t1 SELECT randomblob(800); 1469 INSERT INTO t1 SELECT randomblob(800); 1470 } 1471 } {wal} 1472 do_test wal-22.%PGSZ%.$tn.2 { sql2 { PRAGMA integrity_check } } {ok} 1473 do_test wal-22.%PGSZ%.$tn.3 { 1474 sql1 {PRAGMA wal_checkpoint} 1475 expr {[file size test.db] % %PGSZ%} 1476 } {0} 1477 }] 1478} 1479 1480#------------------------------------------------------------------------- 1481# Test that when 1 or more pages are recovered from a WAL file, 1482# sqlite3_log() is invoked to report this to the user. 1483# 1484ifcapable curdir { 1485 set walfile [file nativename [file join [get_pwd] test.db-wal]] 1486} else { 1487 set walfile test.db-wal 1488} 1489catch {db close} 1490forcedelete test.db 1491do_test wal-23.1 { 1492 faultsim_delete_and_reopen 1493 execsql { 1494 CREATE TABLE t1(a, b); 1495 PRAGMA journal_mode = WAL; 1496 INSERT INTO t1 VALUES(1, 2); 1497 INSERT INTO t1 VALUES(3, 4); 1498 } 1499 faultsim_save_and_close 1500 1501 sqlite3_shutdown 1502 test_sqlite3_log [list lappend ::log] 1503 set ::log [list] 1504 sqlite3 db test.db 1505 execsql { SELECT * FROM t1 } 1506} {1 2 3 4} 1507do_test wal-23.2 { set ::log } {} 1508 1509do_test wal-23.3 { 1510 db close 1511 set ::log [list] 1512 faultsim_restore_and_reopen 1513 execsql { SELECT * FROM t1 } 1514} {1 2 3 4} 1515do_test wal-23.4 { 1516 set ::log 1517} [list SQLITE_NOTICE_RECOVER_WAL \ 1518 "recovered 2 frames from WAL file $walfile"] 1519 1520 1521ifcapable autovacuum { 1522 # This block tests that if the size of a database is reduced by a 1523 # transaction (because of an incremental or auto-vacuum), that no 1524 # data is written to the WAL file for the truncated pages as part 1525 # of the commit. e.g. if a transaction reduces the size of a database 1526 # to N pages, data for page N+1 should not be written to the WAL file 1527 # when committing the transaction. At one point such data was being 1528 # written. 1529 # 1530 catch {db close} 1531 forcedelete test.db 1532 sqlite3 db test.db 1533 do_execsql_test 24.1 { 1534 PRAGMA auto_vacuum = 2; 1535 PRAGMA journal_mode = WAL; 1536 PRAGMA page_size = 1024; 1537 CREATE TABLE t1(x); 1538 INSERT INTO t1 VALUES(randomblob(5000)); 1539 INSERT INTO t1 SELECT * FROM t1; 1540 INSERT INTO t1 SELECT * FROM t1; 1541 INSERT INTO t1 SELECT * FROM t1; 1542 INSERT INTO t1 SELECT * FROM t1; 1543 } {wal} 1544 do_test 24.2 { 1545 execsql { 1546 DELETE FROM t1; 1547 PRAGMA wal_checkpoint; 1548 } 1549 db close 1550 sqlite3 db test.db 1551 file exists test.db-wal 1552 } 0 1553 do_test 24.3 { 1554 file size test.db 1555 } [expr 84 * 1024] 1556 do_test 24.4 { 1557 execsql { 1558 PRAGMA cache_size = 200; 1559 PRAGMA incremental_vacuum; 1560 PRAGMA wal_checkpoint; 1561 } 1562 file size test.db 1563 } [expr 3 * 1024] 1564 1565 # WAL file now contains a single frame - the new root page for table t1. 1566 # It would be two frames (the new root page and a padding frame) if the 1567 # ZERO_DAMAGE flag were not set. 1568 do_test 24.5 { 1569 file size test.db-wal 1570 } [wal_file_size 1 1024] 1571} 1572 1573db close 1574sqlite3_shutdown 1575test_sqlite3_log 1576sqlite3_initialize 1577 1578# Make sure PRAGMA journal_mode=WAL works with ATTACHED databases in 1579# all journal modes. 1580# 1581foreach mode {OFF MEMORY PERSIST DELETE TRUNCATE WAL} { 1582 delete_file test.db test2.db 1583 sqlite3 db test.db 1584 do_test wal-25.$mode { 1585 db eval "PRAGMA journal_mode=$mode" 1586 db eval {ATTACH 'test2.db' AS t2; PRAGMA journal_mode=WAL;} 1587 } {wal} 1588 db close 1589} 1590 1591test_restore_config_pagecache 1592finish_test 1593