# This test doesn't work with the embedded version as this code # assumes that one query is running while we are doing queries on # a second connection. # This would work if mysqltest run would be threaded and handle each # connection in a separate thread. # -- source include/not_embedded.inc drop table if exists t1; #test to see if select will get the lock ahead of low priority update connect (locker,localhost,root,,); connect (reader,localhost,root,,); connect (writer,localhost,root,,); connection locker; create table t1(n int); insert into t1 values (1); lock tables t1 write; connection writer; send update low_priority t1 set n = 4; connection reader; --sleep 2 send select n from t1; connection locker; --sleep 2 unlock tables; connection writer; reap; connection reader; reap; drop table t1; connection locker; create table t1(n int); insert into t1 values (1); lock tables t1 read; connection writer; send update low_priority t1 set n = 4; connection reader; --sleep 2 send select n from t1; connection locker; --sleep 2 unlock tables; connection writer; reap; connection reader; reap; drop table t1;