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