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Table definition cache, part 2

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The table opening process now works the following way:
- Create common TABLE_SHARE object
- Read the .frm file and unpack it into the TABLE_SHARE object
- Create a TABLE object based on the information in the TABLE_SHARE
  object and open a handler to the table object

Other noteworthy changes:
- In TABLE_SHARE the most common strings are now LEX_STRING's
- Better error message when table is not found
- Variable table_cache is now renamed 'table_open_cache'
- New variable 'table_definition_cache' that is the number of table defintions that will be cached
- strxnmov() calls are now fixed to avoid overflows
- strxnmov() will now always add one end \0 to result
- engine objects are now created with a TABLE_SHARE object instead of a TABLE object.
- After creating a field object one must call field->init(table) before using it

- For a busy system this change will give you:
 - Less memory usage for table object
 - Faster opening of tables (if it's has been in use or is in table definition cache)
 - Allow you to cache many table definitions objects
 - Faster drop of table
This commit is contained in:
monty@mysql.com
2005-11-23 22:45:02 +02:00
parent b167a6679b
commit e42c980967
100 changed files with 3655 additions and 2121 deletions
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20
mysql-test/mysql-test-run.sh
View File

@ -1320,16 +1320,16 @@ start_master()
if [ x$DO_DDD = x1 ]
then
$ECHO "set args $master_args" > $GDB_MASTER_INIT
$ECHO "set args $master_args" > $GDB_MASTER_INIT$1
manager_launch master ddd -display $DISPLAY --debugger \
"gdb -x $GDB_MASTER_INIT" $MASTER_MYSQLD
"gdb -x $GDB_MASTER_INIT$1" $MASTER_MYSQLD
elif [ x$DO_GDB = x1 ]
then
if [ x$MANUAL_GDB = x1 ]
then
$ECHO "set args $master_args" > $GDB_MASTER_INIT
$ECHO "set args $master_args" > $GDB_MASTER_INIT$1
$ECHO "To start gdb for the master , type in another window:"
$ECHO "cd $CWD ; gdb -x $GDB_MASTER_INIT $MASTER_MYSQLD"
$ECHO "cd $CWD ; gdb -x $GDB_MASTER_INIT$1 $MASTER_MYSQLD"
wait_for_master=1500
else
( $ECHO set args $master_args;
@ -1341,9 +1341,9 @@ disa 1
end
r
EOF
fi ) > $GDB_MASTER_INIT
fi ) > $GDB_MASTER_INIT$1
manager_launch master $XTERM -display $DISPLAY \
-title "Master" -e gdb -x $GDB_MASTER_INIT $MASTER_MYSQLD
-title "Master" -e gdb -x $GDB_MASTER_INIT$1 $MASTER_MYSQLD
fi
else
manager_launch master $MASTER_MYSQLD $master_args
@ -1965,10 +1965,10 @@ then
$MYSQLADMIN --no-defaults --socket=$MASTER_MYSOCK -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --socket=$MASTER_MYSOCK1 -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --socket=$SLAVE_MYSOCK -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --port=$MASTER_MYPORT -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --port=`expr $MASTER_MYPORT+1` -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --port=$SLAVE_MYPORT -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --port=`expr $SLAVE_MYPORT + 1` -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --port=$MASTER_MYPORT --protocol=tcp -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --protocol=tcp --port=`expr $MASTER_MYPORT+1` -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --protocol=tcp --port=$SLAVE_MYPORT -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
$MYSQLADMIN --no-defaults --host=$hostname --protocol=tcp --port=`expr $SLAVE_MYPORT + 1` -u root -O connect_timeout=5 -O shutdown_timeout=20 shutdown > /dev/null 2>&1
sleep_until_file_deleted 0 $MASTER_MYPID
sleep_until_file_deleted 0 $MASTER_MYPID"1"
sleep_until_file_deleted 0 $SLAVE_MYPID