wasCSharpSQLite – Blame information for rev 7
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Rev | Author | Line No. | Line |
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1 | office | 1 | # 2007 March 24 |
2 | # |
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3 | # The author disclaims copyright to this source code. In place of |
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4 | # a legal notice, here is a blessing: |
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5 | # |
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6 | # May you do good and not evil. |
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7 | # May you find forgiveness for yourself and forgive others. |
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8 | # May you share freely, never taking more than you give. |
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9 | # |
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10 | #*********************************************************************** |
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11 | # |
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12 | # $Id: cache.test,v 1.4 2007/08/22 02:56:44 drh Exp $ |
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13 | |||
14 | set testdir [file dirname $argv0] |
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15 | source $testdir/tester.tcl |
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16 | |||
17 | ifcapable {!pager_pragmas} { |
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18 | finish_test |
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19 | return |
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20 | } |
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21 | sqlite3_soft_heap_limit 0 |
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22 | |||
23 | proc pager_cache_size {db} { |
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24 | set bt [btree_from_db $db] |
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25 | db_enter $db |
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26 | array set stats [btree_pager_stats $bt] |
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27 | db_leave $db |
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28 | return $stats(page) |
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29 | } |
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30 | |||
31 | if {[permutation] == ""} { |
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32 | do_test cache-1.1 { pager_cache_size db } {0} |
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33 | } |
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34 | |||
35 | do_test cache-1.2 { |
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36 | execsql { |
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37 | PRAGMA auto_vacuum=OFF; |
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38 | CREATE TABLE abc(a, b, c); |
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39 | INSERT INTO abc VALUES(1, 2, 3); |
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40 | } |
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41 | pager_cache_size db |
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42 | } {2} |
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43 | |||
44 | # At one point, repeatedly locking and unlocking the cache was causing |
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45 | # a resource leak of one page per repetition. The page wasn't actually |
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46 | # leaked, but would not be reused until the pager-cache was full (i.e. |
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47 | # 2000 pages by default). |
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48 | # |
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49 | # This tests that once the pager-cache is initialised, it can be locked |
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50 | # and unlocked repeatedly without internally allocating any new pages. |
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51 | # |
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52 | set cache_size [pager_cache_size db] |
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53 | for {set ii 0} {$ii < 10} {incr ii} { |
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54 | do_test cache-1.3.$ii { |
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55 | execsql {SELECT * FROM abc} |
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56 | pager_cache_size db |
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57 | } $::cache_size |
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58 | } |
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59 | |||
60 | #------------------------------------------------------------------------- |
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61 | # This block of tests checks that it is possible to set the cache_size of a |
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62 | # database to a small (< 10) value. More specifically: |
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63 | # |
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64 | # cache-2.1.*: Test that "PRAGMA cache_size" appears to work with small |
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65 | # values. |
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66 | # cache-2.2.*: Test that "PRAGMA main.cache_size" appears to work with |
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67 | # small values. |
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68 | # cache-2.3.*: Test cache_size=1 correctly spills/flushes the cache. |
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69 | # cache-2.4.*: Test cache_size=0 correctly spills/flushes the cache. |
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70 | # |
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71 | # |
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72 | db_delete_and_reopen |
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73 | do_execsql_test cache-2.0 { |
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74 | PRAGMA auto_vacuum=OFF; |
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75 | PRAGMA journal_mode=DELETE; |
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76 | CREATE TABLE t1(a, b); |
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77 | CREATE TABLE t2(c, d); |
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78 | INSERT INTO t1 VALUES('x', 'y'); |
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79 | INSERT INTO t2 VALUES('i', 'j'); |
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80 | } {delete} |
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81 | |||
82 | for {set i 0} {$i < 20} {incr i} { |
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83 | do_execsql_test cache-2.1.$i.1 "PRAGMA cache_size = $i" |
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84 | do_execsql_test cache-2.1.$i.2 "PRAGMA cache_size" $i |
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85 | do_execsql_test cache-2.1.$i.3 "SELECT * FROM t1" {x y} |
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86 | do_execsql_test cache-2.1.$i.4 "PRAGMA cache_size" $i |
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87 | } |
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88 | for {set i 0} {$i < 20} {incr i} { |
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89 | do_execsql_test cache-2.2.$i.1 "PRAGMA main.cache_size = $i" |
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90 | do_execsql_test cache-2.2.$i.2 "PRAGMA main.cache_size" $i |
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91 | do_execsql_test cache-2.2.$i.3 "SELECT * FROM t1" {x y} |
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92 | do_execsql_test cache-2.2.$i.4 "PRAGMA main.cache_size" $i |
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93 | } |
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94 | |||
95 | # Tests for cache_size = 1. |
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96 | # |
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97 | do_execsql_test cache-2.3.1 { |
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98 | PRAGMA cache_size = 1; |
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99 | BEGIN; |
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100 | INSERT INTO t1 VALUES(1, 2); |
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101 | PRAGMA lock_status; |
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102 | } {main reserved temp closed} |
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103 | do_test cache-2.3.2 { pager_cache_size db } 2 |
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104 | do_execsql_test cache-2.3.3 { |
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105 | INSERT INTO t2 VALUES(1, 2); |
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106 | PRAGMA lock_status; |
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107 | } {main exclusive temp closed} |
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108 | do_test cache-2.3.4 { pager_cache_size db } 2 |
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109 | do_execsql_test cache-2.3.5 COMMIT |
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110 | do_test cache-2.3.6 { pager_cache_size db } 1 |
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111 | |||
112 | do_execsql_test cache-2.3.7 { |
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113 | SELECT * FROM t1 UNION SELECT * FROM t2; |
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114 | } {1 2 i j x y} |
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115 | do_test cache-2.3.8 { pager_cache_size db } 1 |
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116 | |||
117 | # Tests for cache_size = 0. |
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118 | # |
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119 | do_execsql_test cache-2.4.1 { |
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120 | PRAGMA cache_size = 0; |
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121 | BEGIN; |
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122 | INSERT INTO t1 VALUES(1, 2); |
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123 | PRAGMA lock_status; |
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124 | } {main reserved temp closed} |
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125 | do_test cache-2.4.2 { pager_cache_size db } 2 |
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126 | do_execsql_test cache-2.4.3 { |
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127 | INSERT INTO t2 VALUES(1, 2); |
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128 | PRAGMA lock_status; |
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129 | } {main exclusive temp closed} |
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130 | do_test cache-2.4.4 { pager_cache_size db } 2 |
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131 | do_execsql_test cache-2.4.5 COMMIT |
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132 | |||
133 | do_test cache-2.4.6 { pager_cache_size db } 0 |
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134 | do_execsql_test cache-2.4.7 { |
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135 | SELECT * FROM t1 UNION SELECT * FROM t2; |
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136 | } {1 2 i j x y} |
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137 | do_test cache-2.4.8 { pager_cache_size db } 0 |
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138 | |||
139 | sqlite3_soft_heap_limit $cmdlinearg(soft-heap-limit) |
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140 | finish_test |