database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-07-29 08:01:23 +03:00
Code Activity

If, after obtaining a SHARED lock, there exists a *-wal file in the file-system, use WAL mode. This is necessary to recover from a crash that damages the first page of the database file.

Browse Source 
FossilOrigin-Name: 33cabf271b8f4dda508a610bf59964273fe2cb84
This commit is contained in:
dan
2010-04-21 11:43:38 +00:00
parent 28e5386f79
commit a470aeb4ac
6 changed files with 138 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
test/walcrash.test
View File

@ -32,11 +32,6 @@ db close
set seed 0
set REPEATS 100
proc sqlite3_wal {args} {
eval sqlite3 $args
[lindex $args 0] eval { PRAGMA journal_mode = wal }
}
# walcrash-1.*
#
for {set i 1} {$i < $REPEATS} {incr i} {
@ -51,7 +46,7 @@ for {set i 1} {$i < $REPEATS} {incr i} {
}
} {1 {child process exited abnormally}}
do_test walcrash-1.$i.2 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-1.$i.3
@ -59,17 +54,18 @@ for {set i 1} {$i < $REPEATS} {incr i} {
do_test walcrash-1.$i.4 {
crashsql -delay 2 -file test.db-wal -seed [incr seed] {
PRAGMA journal_mode = WAL;
PRAGMA journal_mode = WAL;
INSERT INTO t1 VALUES(4, (SELECT sum(a) FROM t1) + 4);
INSERT INTO t1 VALUES(5, (SELECT sum(a) FROM t1) + 5);
}
} {1 {child process exited abnormally}}
do_test walcrash-1.$i.5 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-1.$i.6
do_test walcrash-1.$i.5 {
execsql { PRAGMA main.journal_mode }
} {wal}
db close
}
@ -87,7 +83,7 @@ for {set i 1} {$i < $REPEATS} {incr i} {
}
} {1 {child process exited abnormally}}
do_test walcrash-2.$i.2 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-2.$i.3
@ -95,16 +91,18 @@ for {set i 1} {$i < $REPEATS} {incr i} {
do_test walcrash-2.$i.4 {
crashsql -delay 2 -file test.db-wal -seed [incr seed] {
PRAGMA journal_mode = WAL;
INSERT INTO t1 VALUES(6, (SELECT sum(a) FROM t1) + 6);
INSERT INTO t1 VALUES(7, (SELECT sum(a) FROM t1) + 7);
}
} {1 {child process exited abnormally}}
do_test walcrash-2.$i.5 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-2.$i.6
do_test walcrash-2.$i.6 {
execsql { PRAGMA main.journal_mode }
} {wal}
db close
}
@ -157,12 +155,13 @@ for {set i 1} {$i < $REPEATS} {incr i} {
} {1 {child process exited abnormally}}
do_test walcrash-4.$i.2 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql {
SELECT * FROM t1 WHERE a = 1;
}
} {1 2}
do_test walcrash-4.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-4.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
@ -199,10 +198,11 @@ for {set i 1} {$i < $REPEATS} {incr i} {
} {1 {child process exited abnormally}}
do_test walcrash-5.$i.2 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql { SELECT count(*)==33 OR count(*)==34 FROM t1 WHERE x != 1 }
} {1}
do_test walcrash-5.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-5.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
@ -239,10 +239,37 @@ for {set i 1} {$i < $REPEATS} {incr i} {
} {1 {child process exited abnormally}}
do_test walcrash-6.$i.2 {
sqlite3_wal db test.db
sqlite3 db test.db
execsql { SELECT count(*)==34 OR count(*)==35 FROM t1 WHERE x != 1 }
} {1}
do_test walcrash-6.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-6.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
for {set i 1} {$i < $REPEATS} {incr i} {
file delete -force test.db test.db-wal
do_test walcrash-7.$i.1 {
crashsql -delay 3 -file test.db -seed [incr seed] -blocksize 512 {
PRAGMA journal_mode = wal;
BEGIN;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
COMMIT;
PRAGMA checkpoint;
CREATE INDEX i1 ON t1(a);
PRAGMA checkpoint;
}
} {1 {child process exited abnormally}}
do_test walcrash-7.$i.2 {
sqlite3 db test.db
execsql { SELECT b FROM t1 WHERE a = 1 }
} {2}
do_test walcrash-7.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-7.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}