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| 1 # 2006 January 14 | |
| 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 # This file implements regression tests for SQLite library. The | |
| 12 # focus of this script is multithreading behavior | |
| 13 # | |
| 14 # $Id: thread2.test,v 1.3 2008/10/07 15:25:49 drh Exp $ | |
| 15 | |
| 16 | |
| 17 set testdir [file dirname $argv0] | |
| 18 source $testdir/tester.tcl | |
| 19 | |
| 20 ifcapable !mutex { | |
| 21 finish_test | |
| 22 return | |
| 23 } | |
| 24 | |
| 25 | |
| 26 # Skip this whole file if the thread testing code is not enabled | |
| 27 # | |
| 28 if {[llength [info command thread_step]]==0 || [sqlite3 -has-codec]} { | |
| 29 finish_test | |
| 30 return | |
| 31 } | |
| 32 if {![info exists threadsOverrideEachOthersLocks]} { | |
| 33 finish_test | |
| 34 return | |
| 35 } | |
| 36 | |
| 37 # Create some data to work with | |
| 38 # | |
| 39 do_test thread1-1.1 { | |
| 40 execsql { | |
| 41 CREATE TABLE t1(a,b); | |
| 42 INSERT INTO t1 VALUES(1,'abcdefgh'); | |
| 43 INSERT INTO t1 SELECT a+1, b||b FROM t1; | |
| 44 INSERT INTO t1 SELECT a+2, b||b FROM t1; | |
| 45 INSERT INTO t1 SELECT a+4, b||b FROM t1; | |
| 46 SELECT count(*), max(length(b)) FROM t1; | |
| 47 } | |
| 48 } {8 64} | |
| 49 | |
| 50 # Use the thread_swap command to move the database connections between | |
| 51 # threads, then verify that they still work. | |
| 52 # | |
| 53 do_test thread2-1.2 { | |
| 54 db close | |
| 55 thread_create A test.db | |
| 56 thread_create B test.db | |
| 57 thread_swap A B | |
| 58 thread_compile A {SELECT a FROM t1 LIMIT 1} | |
| 59 thread_result A | |
| 60 } {SQLITE_OK} | |
| 61 do_test thread2-1.3 { | |
| 62 thread_step A | |
| 63 thread_result A | |
| 64 } {SQLITE_ROW} | |
| 65 do_test thread2-1.4 { | |
| 66 thread_argv A 0 | |
| 67 } {1} | |
| 68 do_test thread2-1.5 { | |
| 69 thread_finalize A | |
| 70 thread_result A | |
| 71 } {SQLITE_OK} | |
| 72 do_test thread2-1.6 { | |
| 73 thread_compile B {SELECT a FROM t1 LIMIT 1} | |
| 74 thread_result B | |
| 75 } {SQLITE_OK} | |
| 76 do_test thread2-1.7 { | |
| 77 thread_step B | |
| 78 thread_result B | |
| 79 } {SQLITE_ROW} | |
| 80 do_test thread2-1.8 { | |
| 81 thread_argv B 0 | |
| 82 } {1} | |
| 83 do_test thread2-1.9 { | |
| 84 thread_finalize B | |
| 85 thread_result B | |
| 86 } {SQLITE_OK} | |
| 87 | |
| 88 # Swap them again. | |
| 89 # | |
| 90 do_test thread2-2.2 { | |
| 91 thread_swap A B | |
| 92 thread_compile A {SELECT a FROM t1 LIMIT 1} | |
| 93 thread_result A | |
| 94 } {SQLITE_OK} | |
| 95 do_test thread2-2.3 { | |
| 96 thread_step A | |
| 97 thread_result A | |
| 98 } {SQLITE_ROW} | |
| 99 do_test thread2-2.4 { | |
| 100 thread_argv A 0 | |
| 101 } {1} | |
| 102 do_test thread2-2.5 { | |
| 103 thread_finalize A | |
| 104 thread_result A | |
| 105 } {SQLITE_OK} | |
| 106 do_test thread2-2.6 { | |
| 107 thread_compile B {SELECT a FROM t1 LIMIT 1} | |
| 108 thread_result B | |
| 109 } {SQLITE_OK} | |
| 110 do_test thread2-2.7 { | |
| 111 thread_step B | |
| 112 thread_result B | |
| 113 } {SQLITE_ROW} | |
| 114 do_test thread2-2.8 { | |
| 115 thread_argv B 0 | |
| 116 } {1} | |
| 117 do_test thread2-2.9 { | |
| 118 thread_finalize B | |
| 119 thread_result B | |
| 120 } {SQLITE_OK} | |
| 121 thread_halt A | |
| 122 thread_halt B | |
| 123 | |
| 124 # Save the original (correct) value of threadsOverrideEachOthersLocks | |
| 125 # so that it can be restored. If this value is left set incorrectly, lots | |
| 126 # of things will go wrong in future tests. | |
| 127 # | |
| 128 set orig_threadOverride $threadsOverrideEachOthersLocks | |
| 129 | |
| 130 # Pretend we are on a system (like RedHat9) were threads do not | |
| 131 # override each others locks. | |
| 132 # | |
| 133 set threadsOverrideEachOthersLocks 0 | |
| 134 | |
| 135 # Verify that we can move database connections between threads as | |
| 136 # long as no locks are held. | |
| 137 # | |
| 138 do_test thread2-3.1 { | |
| 139 thread_create A test.db | |
| 140 set DB [thread_db_get A] | |
| 141 thread_halt A | |
| 142 } {} | |
| 143 do_test thread2-3.2 { | |
| 144 set STMT [sqlite3_prepare $DB {SELECT a FROM t1 LIMIT 1} -1 TAIL] | |
| 145 sqlite3_step $STMT | |
| 146 } SQLITE_ROW | |
| 147 do_test thread2-3.3 { | |
| 148 sqlite3_column_int $STMT 0 | |
| 149 } 1 | |
| 150 do_test thread2-3.4 { | |
| 151 sqlite3_finalize $STMT | |
| 152 } SQLITE_OK | |
| 153 do_test thread2-3.5 { | |
| 154 set STMT [sqlite3_prepare $DB {SELECT max(a) FROM t1} -1 TAIL] | |
| 155 sqlite3_step $STMT | |
| 156 } SQLITE_ROW | |
| 157 do_test thread2-3.6 { | |
| 158 sqlite3_column_int $STMT 0 | |
| 159 } 8 | |
| 160 do_test thread2-3.7 { | |
| 161 sqlite3_finalize $STMT | |
| 162 } SQLITE_OK | |
| 163 do_test thread2-3.8 { | |
| 164 sqlite3_close $DB | |
| 165 } {SQLITE_OK} | |
| 166 | |
| 167 do_test thread2-3.10 { | |
| 168 thread_create A test.db | |
| 169 thread_compile A {SELECT a FROM t1 LIMIT 1} | |
| 170 thread_step A | |
| 171 thread_finalize A | |
| 172 set DB [thread_db_get A] | |
| 173 thread_halt A | |
| 174 } {} | |
| 175 do_test thread2-3.11 { | |
| 176 set STMT [sqlite3_prepare $DB {SELECT a FROM t1 LIMIT 1} -1 TAIL] | |
| 177 sqlite3_step $STMT | |
| 178 } SQLITE_ROW | |
| 179 do_test thread2-3.12 { | |
| 180 sqlite3_column_int $STMT 0 | |
| 181 } 1 | |
| 182 do_test thread2-3.13 { | |
| 183 sqlite3_finalize $STMT | |
| 184 } SQLITE_OK | |
| 185 do_test thread2-3.14 { | |
| 186 sqlite3_close $DB | |
| 187 } SQLITE_OK | |
| 188 | |
| 189 do_test thread2-3.20 { | |
| 190 thread_create A test.db | |
| 191 thread_compile A {SELECT a FROM t1 LIMIT 3} | |
| 192 thread_step A | |
| 193 set STMT [thread_stmt_get A] | |
| 194 set DB [thread_db_get A] | |
| 195 sqlite3_step $STMT | |
| 196 } SQLITE_ROW | |
| 197 do_test thread2-3.22 { | |
| 198 sqlite3_column_int $STMT 0 | |
| 199 } 2 | |
| 200 do_test thread2-3.23 { | |
| 201 # The unlock fails here. But because we never check the return | |
| 202 # code from sqlite3OsUnlock (because we cannot do anything about it | |
| 203 # if it fails) we do not realize that an error has occurred. | |
| 204 breakpoint | |
| 205 sqlite3_finalize $STMT | |
| 206 } SQLITE_OK | |
| 207 do_test thread2-3.25 { | |
| 208 thread_db_put A $DB | |
| 209 thread_halt A | |
| 210 } {} | |
| 211 | |
| 212 do_test thread2-3.30 { | |
| 213 thread_create A test.db | |
| 214 thread_compile A {BEGIN} | |
| 215 thread_step A | |
| 216 thread_finalize A | |
| 217 thread_compile A {SELECT a FROM t1 LIMIT 1} | |
| 218 thread_step A | |
| 219 thread_finalize A | |
| 220 set DB [thread_db_get A] | |
| 221 set STMT [sqlite3_prepare $DB {INSERT INTO t1 VALUES(99,'error')} -1 TAIL] | |
| 222 sqlite3_step $STMT | |
| 223 } SQLITE_ERROR | |
| 224 do_test thread2-3.32 { | |
| 225 sqlite3_finalize $STMT | |
| 226 } SQLITE_MISUSE | |
| 227 do_test thread2-3.33 { | |
| 228 thread_db_put A $DB | |
| 229 thread_halt A | |
| 230 } {} | |
| 231 | |
| 232 # VERY important to set the override flag back to its true value. | |
| 233 # | |
| 234 set threadsOverrideEachOthersLocks $orig_threadOverride | |
| 235 | |
| 236 # Also important to halt the worker threads, which are using spin | |
| 237 # locks and eating away CPU cycles. | |
| 238 # | |
| 239 thread_halt * | |
| 240 finish_test | |
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