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/*
** 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.
**
*************************************************************************
**
** This file contains multi-threaded tests that use shared-cache and
** the VACUUM command.
**
** Tests:
**
** vacuum1
**
*/
static char *vacuum1_thread_writer(int iTid, void *pArg){
Error err = {0}; /* Error code and message */
Sqlite db = {0}; /* SQLite database connection */
i64 i = 0;
opendb(&err, &db, "test.db", 0);
while( !timetostop(&err) ){
i++;
/* Insert lots of rows. Then delete some. */
execsql(&err, &db,
"WITH loop(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM loop WHERE i<100) "
"INSERT INTO t1 SELECT randomblob(50), randomblob(2500) FROM loop"
);
/* Delete lots of rows */
execsql(&err, &db, "DELETE FROM t1 WHERE rowid = :i", &i);
clear_error(&err, SQLITE_LOCKED);
/* Select the rows */
execsql(&err, &db, "SELECT * FROM t1 ORDER BY x");
clear_error(&err, SQLITE_LOCKED);
}
closedb(&err, &db);
print_and_free_err(&err);
return sqlite3_mprintf("ok");
}
static char *vacuum1_thread_vacuumer(int iTid, void *pArg){
Error err = {0}; /* Error code and message */
Sqlite db = {0}; /* SQLite database connection */
opendb(&err, &db, "test.db", 0);
do{
sql_script(&err, &db, "VACUUM");
clear_error(&err, SQLITE_LOCKED);
}while( !timetostop(&err) );
closedb(&err, &db);
print_and_free_err(&err);
return sqlite3_mprintf("ok");
}
static void vacuum1(int nMs){
Error err = {0};
Sqlite db = {0};
Threadset threads = {0};
opendb(&err, &db, "test.db", 1);
sql_script(&err, &db,
"CREATE TABLE t1(x PRIMARY KEY, y BLOB);"
"CREATE INDEX i1 ON t1(y);"
);
closedb(&err, &db);
setstoptime(&err, nMs);
sqlite3_enable_shared_cache(1);
launch_thread(&err, &threads, vacuum1_thread_writer, 0);
launch_thread(&err, &threads, vacuum1_thread_writer, 0);
launch_thread(&err, &threads, vacuum1_thread_writer, 0);
launch_thread(&err, &threads, vacuum1_thread_vacuumer, 0);
join_all_threads(&err, &threads);
sqlite3_enable_shared_cache(0);
print_and_free_err(&err);
}
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