Annotation of embedaddon/sqlite3/test/pcache.test, revision 1.1
1.1 ! misho 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:
! 16: set testdir [file dirname $argv0]
! 17: source $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: #
! 22: do_not_use_codec
! 23:
! 24: # Only works with a mode-2 pcache where all pcaches share a single set
! 25: # of pages.
! 26: #
! 27: ifcapable {!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: #
! 37: do_test pcache-1.1 {
! 38: db close
! 39: pcache_stats
! 40: } {current 0 max 0 min 0 recyclable 0}
! 41:
! 42: do_test pcache-1.2 {
! 43: sqlite3 db test.db
! 44: execsql {
! 45: PRAGMA cache_size=12;
! 46: PRAGMA auto_vacuum=0;
! 47: }
! 48: pcache_stats
! 49: } {current 1 max 12 min 10 recyclable 1}
! 50:
! 51: do_test pcache-1.3 {
! 52: execsql {
! 53: BEGIN;
! 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);
! 59: }
! 60: pcache_stats
! 61: } {current 6 max 12 min 10 recyclable 0}
! 62:
! 63: do_test pcache-1.4 {
! 64: execsql {
! 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);
! 69: }
! 70: pcache_stats
! 71: } {current 10 max 12 min 10 recyclable 0}
! 72:
! 73: do_test pcache-1.5 {
! 74: sqlite3 db2 test.db
! 75: execsql "PRAGMA cache_size=10" db2
! 76: pcache_stats
! 77: } {current 11 max 22 min 20 recyclable 1}
! 78:
! 79: do_test pcache-1.6.1 {
! 80: execsql {
! 81: BEGIN;
! 82: SELECT * FROM sqlite_master;
! 83: } db2
! 84: pcache_stats
! 85: } {current 11 max 22 min 20 recyclable 0}
! 86:
! 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.
! 90: #
! 91: do_test pcache-1.6.2 {
! 92: execsql {
! 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);
! 104: }
! 105: pcache_stats
! 106: } {current 23 max 22 min 20 recyclable 0}
! 107:
! 108: do_test pcache-1.7 {
! 109: execsql {
! 110: CREATE TABLE t10(a, b, c);
! 111: }
! 112: pcache_stats
! 113: } {current 24 max 22 min 20 recyclable 0}
! 114:
! 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
! 118: # recycled.
! 119: #
! 120: do_test pcache-1.8 {
! 121: execsql {ROLLBACK} db2
! 122: pcache_stats
! 123: } {current 23 max 22 min 20 recyclable 0}
! 124:
! 125: do_test pcache-1.9 {
! 126: execsql COMMIT
! 127: pcache_stats
! 128: } {current 22 max 22 min 20 recyclable 22}
! 129:
! 130: do_test pcache-1.10 {
! 131: db2 close
! 132: pcache_stats
! 133: } {current 12 max 12 min 10 recyclable 12}
! 134:
! 135: do_test pcache-1.11 {
! 136: execsql { PRAGMA cache_size = 20 }
! 137: pcache_stats
! 138: } {current 12 max 20 min 10 recyclable 12}
! 139:
! 140: do_test pcache-1.12 {
! 141: execsql {
! 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;
! 151: }
! 152: pcache_stats
! 153: } {current 19 max 20 min 10 recyclable 19}
! 154:
! 155: do_test pcache-1.13 {
! 156: execsql { PRAGMA cache_size = 15 }
! 157: pcache_stats
! 158: } {current 15 max 15 min 10 recyclable 15}
! 159:
! 160: do_test pcache-1.14 {
! 161: hexio_write test.db 24 [hexio_render_int32 1000]
! 162: execsql { SELECT * FROM sqlite_master }
! 163: pcache_stats
! 164: } {current 2 max 15 min 10 recyclable 2}
! 165:
! 166: do_test pcache-1.15 {
! 167: execsql {
! 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;
! 177: }
! 178: pcache_stats
! 179: } {current 14 max 15 min 10 recyclable 14}
! 180:
! 181: finish_test
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