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Added isolation levels

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Added SELECT .. FOR UPDATE and SELECT .. IN SHARE MODE
This commit is contained in:
monty@tik.mysql.fi
2001-03-21 01:02:22 +02:00
parent ef75476c67
commit 6f9a73a1ba
22 changed files with 381 additions and 142 deletions
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38
sql/sql_parse.cc
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@ -971,7 +971,7 @@ bool do_command(THD *thd)
send_ok(net); // Tell client we are alive
break;
case COM_PROCESS_INFO:
if (!thd->priv_user[0] && check_access(thd,PROCESS_ACL,any_db))
if (!thd->priv_user[0] && check_process_priv(thd))
break;
mysql_log.write(thd,command,NullS);
mysqld_list_processes(thd,thd->master_access & PROCESS_ACL ? NullS :
@ -984,7 +984,7 @@ bool do_command(THD *thd)
break;
}
case COM_DEBUG:
if (check_access(thd,PROCESS_ACL,any_db))
if (check_process_priv(thd))
break; /* purecov: inspected */
mysql_print_status(thd);
mysql_log.write(thd,command,NullS);
@ -1110,12 +1110,16 @@ mysql_execute_command(void)
#endif
break;
}
if (lex->options & SELECT_HIGH_PRIORITY)
else
{
/*
Normal select:
Change lock if we are using SELECT HIGH PRIORITY,
FOR UPDATE or IN SHARE MODE
*/
TABLE_LIST *table;
for (table = tables ; table ; table=table->next)
table->lock_type=TL_READ_HIGH_PRIORITY;
table->lock_type= lex->lock_option;
}
if (!(res=open_and_lock_tables(thd,tables)))
@ -1141,7 +1145,7 @@ mysql_execute_command(void)
}
case SQLCOM_PURGE:
{
if(check_access(thd, PROCESS_ACL, any_db))
if (check_process_priv(thd))
goto error;
res = purge_master_logs(thd, lex->to_log);
break;
@ -1174,14 +1178,14 @@ mysql_execute_command(void)
}
case SQLCOM_SHOW_SLAVE_STAT:
{
if(check_access(thd, PROCESS_ACL, any_db))
if (check_process_priv(thd))
goto error;
res = show_master_info(thd);
break;
}
case SQLCOM_SHOW_MASTER_STAT:
{
if (check_access(thd, PROCESS_ACL, any_db))
if (check_process_priv(thd))
goto error;
res = show_binlog_info(thd);
break;
@ -1414,7 +1418,7 @@ mysql_execute_command(void)
DBUG_VOID_RETURN;
#else
{
if(check_access(thd, PROCESS_ACL, any_db))
if (check_process_priv(thd))
goto error;
res = show_binlogs(thd);
break;
@ -1632,13 +1636,13 @@ mysql_execute_command(void)
DBUG_VOID_RETURN;
#else
if ((specialflag & SPECIAL_SKIP_SHOW_DB) &&
check_access(thd,PROCESS_ACL,any_db))
check_process_priv(thd))
goto error;
res= mysqld_show_dbs(thd, (lex->wild ? lex->wild->ptr() : NullS));
break;
#endif
case SQLCOM_SHOW_PROCESSLIST:
if (!thd->priv_user[0] && check_access(thd,PROCESS_ACL,any_db))
if (!thd->priv_user[0] && check_process_priv(thd))
break;
mysqld_list_processes(thd,thd->master_access & PROCESS_ACL ? NullS :
thd->priv_user,lex->verbose);
@ -1778,6 +1782,12 @@ mysql_execute_command(void)
thd->update_lock_default= ((thd->options & OPTION_LOW_PRIORITY_UPDATES) ?
TL_WRITE_LOW_PRIORITY : TL_WRITE);
thd->default_select_limit=lex->select_limit;
thd->tx_isolation=lex->tx_isolation;
if (thd->gemini_spin_retries != lex->gemini_spin_retries)
{
thd->gemini_spin_retries= lex->gemini_spin_retries;
ha_set_spin_retries(thd->gemini_spin_retries);
}
DBUG_PRINT("info",("options: %ld limit: %ld",
thd->options,(long) thd->default_select_limit));
@ -2092,6 +2102,12 @@ check_access(THD *thd,uint want_access,const char *db, uint *save_priv,
}
bool check_process_priv(THD *thd)
{
return (check_access(thd ? thd : current_thd,PROCESS_ACL,any_db));
}
/*
** Check the privilege for all used tables. Table privileges are cached
** in the table list for GRANT checking