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| 1 # 2009 July 2 | |
| 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 # | |
| 12 # $Id: sharedlock.test,v 1.1 2009/07/02 17:21:58 danielk1977 Exp $ | |
| 13 | |
| 14 set testdir [file dirname $argv0] | |
| 15 source $testdir/tester.tcl | |
| 16 set testprefix sharedlock | |
| 17 db close | |
| 18 | |
| 19 ifcapable !shared_cache { | |
| 20 finish_test | |
| 21 return | |
| 22 } | |
| 23 | |
| 24 set ::enable_shared_cache [sqlite3_enable_shared_cache 1] | |
| 25 sqlite3 db test.db | |
| 26 sqlite3 db2 test.db | |
| 27 | |
| 28 do_test sharedlock-1.1 { | |
| 29 execsql { | |
| 30 CREATE TABLE t1(a, b); | |
| 31 INSERT INTO t1 VALUES(1, 'one'); | |
| 32 INSERT INTO t1 VALUES(2, 'two'); | |
| 33 } | |
| 34 } {} | |
| 35 | |
| 36 do_test sharedlock-1.2 { | |
| 37 set res [list] | |
| 38 db eval { SELECT * FROM t1 ORDER BY rowid } { | |
| 39 lappend res $a $b | |
| 40 if {$a == 1} { catch { db eval "INSERT INTO t1 VALUES(3, 'three')" } } | |
| 41 | |
| 42 # This should fail. Connection [db] has a read-lock on t1, which should | |
| 43 # prevent connection [db2] from obtaining the write-lock it needs to | |
| 44 # modify t1. At one point there was a bug causing the previous INSERT | |
| 45 # to drop the read-lock belonging to [db]. | |
| 46 if {$a == 2} { catch { db2 eval "INSERT INTO t1 VALUES(4, 'four')" } } | |
| 47 } | |
| 48 set res | |
| 49 } {1 one 2 two 3 three} | |
| 50 | |
| 51 | |
| 52 #------------------------------------------------------------------------- | |
| 53 # Test that a write-lock is taken on a table when its entire contents | |
| 54 # are deleted using the OP_Clear optimization. | |
| 55 # | |
| 56 foreach {tn delete_sql} { | |
| 57 1 { DELETE FROM t2 WHERE 1 } | |
| 58 2 { DELETE FROM t2 } | |
| 59 } { | |
| 60 do_execsql_test 2.1 { | |
| 61 DROP TABLE IF EXISTS t2; | |
| 62 CREATE TABLE t2(x, y); | |
| 63 INSERT INTO t2 VALUES(1, 2); | |
| 64 INSERT INTO t2 VALUES(3, 4); | |
| 65 } | |
| 66 | |
| 67 do_test 2.2 { execsql { SELECT * FROM t2 } db2 } {1 2 3 4} | |
| 68 | |
| 69 do_execsql_test 2.3 " BEGIN; $delete_sql; " | |
| 70 | |
| 71 do_test 2.4 { | |
| 72 catchsql { SELECT * FROM t2 } db2 | |
| 73 } {1 {database table is locked: t2}} | |
| 74 | |
| 75 do_execsql_test 2.5 COMMIT | |
| 76 } | |
| 77 | |
| 78 | |
| 79 db close | |
| 80 db2 close | |
| 81 sqlite3_enable_shared_cache $::enable_shared_cache | |
| 82 finish_test | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
