summaryrefslogtreecommitdiffstats
path: root/storage/myisammrg/myrg_extra.c
diff options
context:
space:
mode:
Diffstat (limited to 'storage/myisammrg/myrg_extra.c')
-rw-r--r--storage/myisammrg/myrg_extra.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/storage/myisammrg/myrg_extra.c b/storage/myisammrg/myrg_extra.c
new file mode 100644
index 00000000..2b3861b9
--- /dev/null
+++ b/storage/myisammrg/myrg_extra.c
@@ -0,0 +1,97 @@
+/* Copyright (c) 2000-2003, 2005-2007 MySQL AB, 2009 Sun Microsystems, Inc.
+ Use is subject to license terms.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/*
+ Extra functions we want to do with a database
+ - All flags, exept record-cache-flags, are set in all used databases
+ record-cache-flags are set in myrg_rrnd when we are changing database.
+*/
+
+#include "myrg_def.h"
+
+int myrg_extra(MYRG_INFO *info,enum ha_extra_function function,
+ void *extra_arg)
+{
+ int error,save_error=0;
+ MYRG_TABLE *file;
+ DBUG_ENTER("myrg_extra");
+ DBUG_PRINT("info",("function: %lu", (ulong) function));
+
+ if (!info->children_attached)
+ DBUG_RETURN(0);
+ if (function == HA_EXTRA_CACHE)
+ {
+ info->cache_in_use=1;
+ info->cache_size= (extra_arg ? *(ulong*) extra_arg :
+ my_default_record_cache_size);
+ }
+ else
+ {
+ if (function == HA_EXTRA_NO_CACHE ||
+ function == HA_EXTRA_PREPARE_FOR_UPDATE)
+ info->cache_in_use=0;
+ if (function == HA_EXTRA_RESET_STATE)
+ {
+ info->current_table=0;
+ info->last_used_table=info->open_tables;
+ }
+ for (file=info->open_tables ; file != info->end_table ; file++)
+ {
+ if ((error=mi_extra(file->table, function, extra_arg)))
+ save_error=error;
+ }
+ }
+ DBUG_RETURN(save_error);
+}
+
+
+void myrg_extrafunc(MYRG_INFO *info, invalidator_by_filename inv)
+{
+ MYRG_TABLE *file;
+ DBUG_ENTER("myrg_extrafunc");
+
+ for (file=info->open_tables ; file != info->end_table ; file++)
+ file->table->s->invalidator = inv;
+
+ DBUG_VOID_RETURN;
+}
+
+
+int myrg_reset(MYRG_INFO *info)
+{
+ int save_error= 0;
+ MYRG_TABLE *file;
+ DBUG_ENTER("myrg_reset");
+
+ info->cache_in_use=0;
+ info->current_table=0;
+ info->last_used_table= info->open_tables;
+
+ /*
+ This is normally called with detached children.
+ Return OK as this is the normal case.
+ */
+ if (!info->children_attached)
+ DBUG_RETURN(0);
+
+ for (file=info->open_tables ; file != info->end_table ; file++)
+ {
+ int error;
+ if ((error= mi_reset(file->table)))
+ save_error=error;
+ }
+ DBUG_RETURN(save_error);
+}