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 # This file is focused on testing the pcache module.
14 # $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $
16 set testdir [file dirname $argv0]
17 source $testdir/tester.tcl
19 # Do not use a codec for tests in this file, as the database file is
20 # manipulated directly using tcl scripts (using the [hexio_write] command).
24 # Only works with a mode-2 pcache where all pcaches share a single set
27 ifcapable {!memorymanage && threadsafe} {
32 # The pcache module limits the number of pages available to purgeable
33 # caches to the sum of the 'cache_size' values for the set of open
34 # caches. This block of tests, pcache-1.*, test that the library behaves
35 # corrctly when it is forced to exceed this limit.
40 } {current 0 max 0 min 0 recyclable 0}
49 } {current 1 max 12 min 10 recyclable 1}
54 CREATE TABLE t1(a, b, c);
55 CREATE TABLE t2(a, b, c);
56 CREATE TABLE t3(a, b, c);
57 CREATE TABLE t4(a, b, c);
58 CREATE TABLE t5(a, b, c);
61 } {current 6 max 12 min 10 recyclable 0}
65 CREATE TABLE t6(a, b, c);
66 CREATE TABLE t7(a, b, c);
67 CREATE TABLE t8(a, b, c);
68 CREATE TABLE t9(a, b, c);
71 } {current 10 max 12 min 10 recyclable 0}
75 execsql "PRAGMA cache_size=10" db2
77 } {current 11 max 22 min 20 recyclable 1}
79 do_test pcache-1.6.1 {
82 SELECT * FROM sqlite_master;
85 } {current 11 max 22 min 20 recyclable 0}
87 # At this point connection db2 has a read lock on the database file and a
88 # single pinned page in its cache. Connection [db] is holding 10 dirty
89 # pages. It cannot recycle them because of the read lock held by db2.
91 do_test pcache-1.6.2 {
93 CREATE INDEX i1 ON t1(a, b);
94 CREATE INDEX i2 ON t2(a, b);
95 CREATE INDEX i3 ON t3(a, b);
96 CREATE INDEX i4 ON t4(a, b);
97 CREATE INDEX i5 ON t5(a, b);
98 CREATE INDEX i6 ON t6(a, b);
99 CREATE INDEX i7 ON t7(a, b);
100 CREATE INDEX i8 ON t8(a, b);
101 CREATE INDEX i9 ON t9(a, b);
102 CREATE INDEX i10 ON t9(a, b);
103 CREATE INDEX i11 ON t9(a, b);
106 } {current 23 max 22 min 20 recyclable 0}
110 CREATE TABLE t10(a, b, c);
113 } {current 24 max 22 min 20 recyclable 0}
115 # Rolling back the transaction held by db2 at this point releases a pinned
116 # page. Because the number of allocated pages is greater than the
117 # configured maximum, this page should be freed immediately instead of
121 execsql {ROLLBACK} db2
123 } {current 23 max 22 min 20 recyclable 0}
128 } {current 22 max 22 min 20 recyclable 22}
130 do_test pcache-1.10 {
133 } {current 12 max 12 min 10 recyclable 12}
135 do_test pcache-1.11 {
136 execsql { PRAGMA cache_size = 20 }
138 } {current 12 max 20 min 10 recyclable 12}
140 do_test pcache-1.12 {
142 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1;
143 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2;
144 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3;
145 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4;
146 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5;
147 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6;
148 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7;
149 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8;
150 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9;
153 } {current 19 max 20 min 10 recyclable 19}
155 do_test pcache-1.13 {
156 execsql { PRAGMA cache_size = 15 }
158 } {current 15 max 15 min 10 recyclable 15}
160 do_test pcache-1.14 {
161 hexio_write test.db 24 [hexio_render_int32 1000]
162 execsql { SELECT * FROM sqlite_master }
164 } {current 2 max 15 min 10 recyclable 2}
166 do_test pcache-1.15 {
168 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1;
169 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2;
170 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3;
171 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4;
172 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5;
173 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6;
174 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7;
175 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8;
176 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9;
179 } {current 14 max 15 min 10 recyclable 14}