3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #***********************************************************************
13 set testdir [file dirname $argv0]
14 source $testdir/tester.tcl
15 source $testdir/lock_common.tcl
17 set testprefix superlock
21 # 1.*: Test superlock on a rollback database. Test that once the db is
22 # superlocked, it is not possible for a second client to read from
25 # 2.*: Test superlock on a WAL database with zero frames in the WAL file.
26 # Test that once the db is superlocked, it is not possible to read,
27 # write or checkpoint the db.
29 # 3.*: As 2.*, for WAL databases with one or more frames in the WAL.
31 # 4.*: As 2.*, for WAL databases with one or more checkpointed frames
34 # 5.*: Test that a call to sqlite3demo_superlock() uses the busy handler
35 # correctly to wait for existing clients to clear on a WAL database.
36 # And returns SQLITE_BUSY if no busy handler is defined or the busy
37 # handler returns 0 before said clients relinquish their locks.
39 # 6.*: Test that if a superlocked WAL database is overwritten, existing
40 # clients run the recovery to build the new wal-index after the
41 # superlock is released.
46 CREATE TABLE t1(a, b);
47 INSERT INTO t1 VALUES(1, 2);
48 PRAGMA journal_mode = DELETE;
56 do_test 1.2 { sqlite3demo_superlock unlock test.db } {unlock}
57 do_catchsql_test 1.3 { SELECT * FROM t1 } {1 {database is locked}}
58 do_test 1.4 { unlock } {}
61 INSERT INTO t1 VALUES(3, 4);
62 PRAGMA journal_mode = WAL;
65 do_test 2.2 { sqlite3demo_superlock unlock test.db } {unlock}
66 do_catchsql_test 2.3 { SELECT * FROM t1 } {1 {database is locked}}
67 do_catchsql_test 2.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
68 do_catchsql_test 2.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
69 do_test 2.6 { unlock } {}
71 do_execsql_test 3.1 { INSERT INTO t1 VALUES(3, 4) }
73 do_test 3.2 { sqlite3demo_superlock unlock test.db } {unlock}
74 do_catchsql_test 3.3 { SELECT * FROM t1 } {1 {database is locked}}
75 do_catchsql_test 3.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
76 do_catchsql_test 3.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
77 do_test 3.6 { unlock } {}
79 # At this point the WAL file consists of a single frame only - written
80 # by test case 3.1. If the ZERO_DAMAGE flag were not set, it would consist
81 # of two frames - the frame written by 3.1 and a padding frame.
82 do_execsql_test 4.1 { PRAGMA wal_checkpoint } {0 1 1}
84 do_test 4.2 { sqlite3demo_superlock unlock test.db } {unlock}
85 do_catchsql_test 4.3 { SELECT * FROM t1 } {1 {database is locked}}
86 do_catchsql_test 4.4 { INSERT INTO t1 VALUES(5, 6)} {1 {database is locked}}
87 do_catchsql_test 4.5 { PRAGMA wal_checkpoint } {0 {1 -1 -1}}
88 do_test 4.6 { unlock } {}
90 do_multiclient_test tn {
92 proc busyhandler {x} {
101 set ::busylist [list]
105 CREATE TABLE t1(a, b);
106 PRAGMA journal_mode = WAL;
107 INSERT INTO t1 VALUES(1, 2);
112 sql1 { BEGIN ; SELECT * FROM t1 }
113 sql2 { BEGIN ; INSERT INTO t1 VALUES(3, 4) }
114 sql3 { BEGIN ; SELECT * FROM t1 }
118 set ::busylist [list]
119 sqlite3demo_superlock unlock test.db "" busyhandler
123 do_test 5.$tn.4 { csql2 { SELECT * FROM t1 } } {1 {database is locked}}
125 csql3 { INSERT INTO t1 VALUES(5, 6) }
126 } {1 {database is locked}}
127 do_test 5.$tn.6 { csql1 "PRAGMA wal_checkpoint" } {0 {1 -1 -1}}
129 do_test 5.$tn.7 { unlock } {}
133 sql1 { BEGIN ; SELECT * FROM t1 }
134 sql2 { BEGIN ; INSERT INTO t1 VALUES(5, 6) }
135 sql3 { BEGIN ; SELECT * FROM t1 }
139 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
140 } {1 {database is locked}}
143 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
144 } {1 {database is locked}}
147 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
148 } {1 {database is locked}}
151 list [catch {sqlite3demo_superlock unlock test.db} msg] $msg
156 do_test 5.$tn.13 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
157 do_test 5.$tn.14 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
158 do_test 5.$tn.15 { sqlite3demo_superlock unlock test.db } {unlock}
159 do_test 5.$tn.16 { unlock } {}
160 do_test 5.$tn.17 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
161 do_test 5.$tn.18 { sql1 { SELECT * FROM t1 } } {1 2 3 4 5 6}
162 do_test 5.$tn.19 { sql2 { SELECT * FROM t1 } } {1 2 3 4 5 6}
165 proc read_content {file} {
166 if {[file exists $file]==0} {return ""}
168 fconfigure $fd -encoding binary -translation binary
169 set content [read $fd]
174 proc write_content {file content} {
175 set fd [open $file w+]
176 fconfigure $fd -encoding binary -translation binary
177 puts -nonewline $fd $content
181 # Both $file1 and $file2 are database files. This function takes a
182 # superlock on each, then exchanges the content of the two files (i.e.
183 # overwrites $file1 with the initial contents of $file2, and overwrites
184 # $file2 with the initial contents of $file1). The contents of any WAL
185 # file is also exchanged.
187 proc db_swap {file1 file2} {
188 sqlite3demo_superlock unlock1 $file1
189 sqlite3demo_superlock unlock2 $file2
191 set db1 [read_content $file1]
192 set db2 [read_content $file2]
193 write_content $file1 $db2
194 write_content $file2 $db1
196 set wal1 [read_content ${file1}-wal]
197 set wal2 [read_content ${file2}-wal]
198 write_content ${file1}-wal $wal2
199 write_content ${file2}-wal $wal1
207 do_execsql_test 6.1 {
208 ATTACH 'test.db2' AS aux;
209 PRAGMA aux.journal_mode = wal;
210 CREATE TABLE aux.t2(x, y);
211 INSERT INTO aux.t2 VALUES('a', 'b');
212 PRAGMA schema_version = 450;
215 PRAGMA main.journal_mode = wal;
216 CREATE TABLE t1(a, b);
217 INSERT INTO t1 VALUES(1, 2);
218 INSERT INTO t1 VALUES(3, 4);
223 db_swap test.db2 test.db
224 do_catchsql_test 6.2 { SELECT * FROM t1 } {1 {no such table: t1}}
225 do_catchsql_test 6.3 { SELECT * FROM t2 } {0 {a b}}
227 db_swap test.db2 test.db
228 do_catchsql_test 6.4 { SELECT * FROM t1 } {0 {1 2 3 4}}
229 do_catchsql_test 6.5 { SELECT * FROM t2 } {1 {no such table: t2}}
231 do_execsql_test 6.6 { PRAGMA wal_checkpoint } {0 0 0}
233 db_swap test.db2 test.db
234 do_catchsql_test 6.7 { SELECT * FROM t1 } {1 {no such table: t1}}
235 do_catchsql_test 6.8 { SELECT * FROM t2 } {0 {a b}}
237 db_swap test.db2 test.db
238 do_catchsql_test 6.9 { SELECT * FROM t1 } {0 {1 2 3 4}}
239 do_catchsql_test 6.10 { SELECT * FROM t2 } {1 {no such table: t2}}
241 do_execsql_test 6.11 {
242 PRAGMA journal_mode = delete;
243 PRAGMA page_size = 512;
245 PRAGMA journal_mode = wal;
246 INSERT INTO t1 VALUES(5, 6);
249 db_swap test.db2 test.db
250 do_catchsql_test 6.12 { SELECT * FROM t1 } {1 {no such table: t1}}
251 do_catchsql_test 6.13 { SELECT * FROM t2 } {0 {a b}}
253 db_swap test.db2 test.db
254 do_catchsql_test 6.14 { SELECT * FROM t1 } {0 {1 2 3 4 5 6}}
255 do_catchsql_test 6.15 { SELECT * FROM t2 } {1 {no such table: t2}}