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-rw-r--r--storage/myisam/mi_changed.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/storage/myisam/mi_changed.c b/storage/myisam/mi_changed.c
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+++ b/storage/myisam/mi_changed.c
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+/* Copyright (c) 2000, 2001, 2005, 2006 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 */
+
+/* Check if somebody has changed table since last check. */
+
+#include "myisamdef.h"
+
+ /* Return 0 if table isn't changed */
+
+int mi_is_changed(MI_INFO *info)
+{
+ int result;
+ DBUG_ENTER("mi_is_changed");
+ if (fast_mi_readinfo(info))
+ DBUG_RETURN(-1);
+ (void) _mi_writeinfo(info,0);
+ result=(int) info->data_changed;
+ info->data_changed=0;
+ DBUG_PRINT("exit",("result: %d",result));
+ DBUG_RETURN(result);
+}