1# 2008 August 29 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# This file is focused on testing the pcache module. 13# 14# $Id: pcache.test,v 1.5 2009/05/08 06:52:48 danielk1977 Exp $ 15 16set testdir [file dirname $argv0] 17source $testdir/tester.tcl 18 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). 21# 22do_not_use_codec 23 24# Only works with a mode-2 pcache where all pcaches share a single set 25# of pages. 26# 27ifcapable {!memorymanage && threadsafe} { 28 finish_test 29 return 30} 31 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. 36# 37do_test pcache-1.1 { 38 db close 39 pcache_stats 40} {current 0 max 0 min 0 recyclable 0} 41 42do_test pcache-1.2 { 43 sqlite3 db test.db 44 execsql { 45 PRAGMA cache_size=12; 46 PRAGMA auto_vacuum=0; 47 PRAGMA mmap_size=0; 48 } 49 pcache_stats 50} {current 1 max 12 min 10 recyclable 1} 51 52do_test pcache-1.3 { 53 execsql { 54 BEGIN; 55 CREATE TABLE t1(a, b, c); 56 CREATE TABLE t2(a, b, c); 57 CREATE TABLE t3(a, b, c); 58 CREATE TABLE t4(a, b, c); 59 CREATE TABLE t5(a, b, c); 60 } 61 pcache_stats 62} {current 6 max 12 min 10 recyclable 0} 63 64do_test pcache-1.4 { 65 execsql { 66 CREATE TABLE t6(a, b, c); 67 CREATE TABLE t7(a, b, c); 68 CREATE TABLE t8(a, b, c); 69 CREATE TABLE t9(a, b, c); 70 } 71 pcache_stats 72} {current 10 max 12 min 10 recyclable 0} 73 74do_test pcache-1.5 { 75 sqlite3 db2 test.db 76 execsql "PRAGMA cache_size; PRAGMA cache_size=10" db2 77 pcache_stats 78} {current 11 max 22 min 20 recyclable 1} 79 80do_test pcache-1.6.1 { 81 execsql { 82 BEGIN; 83 SELECT * FROM sqlite_master; 84 } db2 85 pcache_stats 86} {current 11 max 22 min 20 recyclable 0} 87 88# At this point connection db2 has a read lock on the database file and a 89# single pinned page in its cache. Connection [db] is holding 10 dirty 90# pages. It cannot recycle them because of the read lock held by db2. 91# 92do_test pcache-1.6.2 { 93 execsql { 94 CREATE INDEX i1 ON t1(a, b); 95 CREATE INDEX i2 ON t2(a, b); 96 CREATE INDEX i3 ON t3(a, b); 97 CREATE INDEX i4 ON t4(a, b); 98 CREATE INDEX i5 ON t5(a, b); 99 CREATE INDEX i6 ON t6(a, b); 100 CREATE INDEX i7 ON t7(a, b); 101 CREATE INDEX i8 ON t8(a, b); 102 CREATE INDEX i9 ON t9(a, b); 103 CREATE INDEX i10 ON t9(a, b); 104 CREATE INDEX i11 ON t9(a, b); 105 } 106 pcache_stats 107} {current 23 max 22 min 20 recyclable 0} 108 109do_test pcache-1.7 { 110 execsql { 111 CREATE TABLE t10(a, b, c); 112 } 113 pcache_stats 114} {current 24 max 22 min 20 recyclable 0} 115 116# Rolling back the transaction held by db2 at this point releases a pinned 117# page. Because the number of allocated pages is greater than the 118# configured maximum, this page should be freed immediately instead of 119# recycled. 120# 121do_test pcache-1.8 { 122 execsql {ROLLBACK} db2 123 pcache_stats 124} {current 23 max 22 min 20 recyclable 0} 125 126do_test pcache-1.9 { 127 execsql COMMIT 128 pcache_stats 129} {current 22 max 22 min 20 recyclable 22} 130 131do_test pcache-1.10 { 132 db2 close 133 pcache_stats 134} {current 12 max 12 min 10 recyclable 12} 135 136do_test pcache-1.11 { 137 execsql { PRAGMA cache_size = 20 } 138 pcache_stats 139} {current 12 max 20 min 10 recyclable 12} 140 141do_test pcache-1.12 { 142 execsql { 143 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; 144 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; 145 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; 146 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; 147 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; 148 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; 149 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; 150 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; 151 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; 152 } 153 pcache_stats 154} {current 19 max 20 min 10 recyclable 19} 155 156do_test pcache-1.13 { 157 execsql { PRAGMA cache_size = 15 } 158 pcache_stats 159} {current 15 max 15 min 10 recyclable 15} 160 161do_test pcache-1.14 { 162 hexio_write test.db 24 [hexio_render_int32 1000] 163 execsql { SELECT * FROM sqlite_master } 164 pcache_stats 165} {current 2 max 15 min 10 recyclable 2} 166 167do_test pcache-1.15 { 168 execsql { 169 SELECT * FROM t1 ORDER BY a; SELECT * FROM t1; 170 SELECT * FROM t2 ORDER BY a; SELECT * FROM t2; 171 SELECT * FROM t3 ORDER BY a; SELECT * FROM t3; 172 SELECT * FROM t4 ORDER BY a; SELECT * FROM t4; 173 SELECT * FROM t5 ORDER BY a; SELECT * FROM t5; 174 SELECT * FROM t6 ORDER BY a; SELECT * FROM t6; 175 SELECT * FROM t7 ORDER BY a; SELECT * FROM t7; 176 SELECT * FROM t8 ORDER BY a; SELECT * FROM t8; 177 SELECT * FROM t9 ORDER BY a; SELECT * FROM t9; 178 } 179 pcache_stats 180} {current 14 max 15 min 10 recyclable 14} 181 182finish_test 183