| /* |
| ** 2014 December 9 |
| ** |
| ** The author disclaims copyright to this source code. In place of |
| ** a legal notice, here is a blessing: |
| ** |
| ** May you do good and not evil. |
| ** May you find forgiveness for yourself and forgive others. |
| ** May you share freely, never taking more than you give. |
| ** |
| ************************************************************************* |
| ** |
| ** create_drop_index_1 |
| */ |
| |
| |
| static char *create_drop_index_thread(int iTid, void *pArg){ |
| Error err = {0}; /* Error code and message */ |
| Sqlite db = {0}; /* SQLite database connection */ |
| |
| while( !timetostop(&err) ){ |
| opendb(&err, &db, "test.db", 0); |
| |
| sql_script(&err, &db, |
| "DROP INDEX IF EXISTS i1;" |
| "DROP INDEX IF EXISTS i2;" |
| "DROP INDEX IF EXISTS i3;" |
| "DROP INDEX IF EXISTS i4;" |
| |
| "CREATE INDEX IF NOT EXISTS i1 ON t11(a);" |
| "CREATE INDEX IF NOT EXISTS i2 ON t11(b);" |
| "CREATE INDEX IF NOT EXISTS i3 ON t11(c);" |
| "CREATE INDEX IF NOT EXISTS i4 ON t11(d);" |
| |
| "SELECT * FROM t11 ORDER BY a;" |
| "SELECT * FROM t11 ORDER BY b;" |
| "SELECT * FROM t11 ORDER BY c;" |
| "SELECT * FROM t11 ORDER BY d;" |
| ); |
| clear_error(&err, SQLITE_LOCKED); |
| |
| closedb(&err, &db); |
| } |
| |
| print_and_free_err(&err); |
| return sqlite3_mprintf("ok"); |
| } |
| |
| static void create_drop_index_1(int nMs){ |
| Error err = {0}; |
| Sqlite db = {0}; |
| Threadset threads = {0}; |
| |
| opendb(&err, &db, "test.db", 1); |
| sql_script(&err, &db, |
| "CREATE TABLE t11(a, b, c, d);" |
| "WITH data(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM data WHERE x<100) " |
| "INSERT INTO t11 SELECT x,x,x,x FROM data;" |
| ); |
| closedb(&err, &db); |
| |
| setstoptime(&err, nMs); |
| |
| sqlite3_enable_shared_cache(1); |
| launch_thread(&err, &threads, create_drop_index_thread, 0); |
| launch_thread(&err, &threads, create_drop_index_thread, 0); |
| launch_thread(&err, &threads, create_drop_index_thread, 0); |
| launch_thread(&err, &threads, create_drop_index_thread, 0); |
| launch_thread(&err, &threads, create_drop_index_thread, 0); |
| |
| join_all_threads(&err, &threads); |
| sqlite3_enable_shared_cache(0); |
| print_and_free_err(&err); |
| } |