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 #***********************************************************************
12 # $Id: shared2.test,v 1.8 2009/06/05 17:09:12 drh Exp $
14 set testdir [file dirname $argv0]
15 source $testdir/tester.tcl
16 source $testdir/lock_common.tcl
17 source $testdir/malloc_common.tcl
20 ifcapable !shared_cache {
24 set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
26 # Test that if we delete all rows from a table any read-uncommitted
27 # cursors are correctly invalidated. Test on both table and index btrees.
32 # Set up some data. Table "numbers" has 64 rows after this block
36 CREATE TABLE numbers(a PRIMARY KEY, b);
37 INSERT INTO numbers(oid) VALUES(NULL);
38 INSERT INTO numbers(oid) SELECT NULL FROM numbers;
39 INSERT INTO numbers(oid) SELECT NULL FROM numbers;
40 INSERT INTO numbers(oid) SELECT NULL FROM numbers;
41 INSERT INTO numbers(oid) SELECT NULL FROM numbers;
42 INSERT INTO numbers(oid) SELECT NULL FROM numbers;
43 INSERT INTO numbers(oid) SELECT NULL FROM numbers;
44 UPDATE numbers set a = oid, b = 'abcdefghijklmnopqrstuvwxyz0123456789';
49 # Put connection 2 in read-uncommitted mode and start a SELECT on table
50 # 'numbers'. Half way through the SELECT, use connection 1 to delete the
51 # contents of this table.
53 pragma read_uncommitted = 1;
55 set count [execsql {SELECT count(*) FROM numbers} db2]
56 db2 eval {SELECT a FROM numbers ORDER BY oid} {
67 # Same test as 1.2, except scan using the index this time.
71 set count [execsql {SELECT count(*) FROM numbers} db2]
72 db2 eval {SELECT a, b FROM numbers ORDER BY a} {
87 sqlite3_enable_shared_cache 1
95 CREATE TABLE t0(a, b);
96 CREATE TABLE t1(a, b DEFAULT 'hello world');
104 do_test shared2-4.2 {
105 execsql { SELECT a, b FROM t0 } db
106 execsql { INSERT INTO t1(a) VALUES(1) } db2
109 do_test shared2-4.3 {
114 # At one point, this was causing a crash.
116 do_test shared2-5.1 {
119 execsql { CREATE TABLE t2(a, b, c) }
121 # The following statement would crash when attempting to sqlite3_free()
122 # a pointer allocated from a lookaside buffer.
123 execsql { CREATE INDEX i1 ON t2(a) } db2
129 # The following test verifies that shared-cache mode does not automatically
130 # turn on exclusive-locking mode for some reason.
131 do_multiclient_test {tn} {
132 sql1 { CREATE TABLE t1(a, b) }
133 sql2 { CREATE TABLE t2(a, b) }
134 do_test shared2-6.$tn.1 { sql1 { SELECT * FROM t2 } } {}
135 do_test shared2-6.$tn.2 { sql2 { SELECT * FROM t1 } } {}
138 sqlite3_enable_shared_cache $::enable_shared_cache