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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:07:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:07:14 +0000
commita175314c3e5827eb193872241446f2f8f5c9d33c (patch)
treecd3d60ca99ae00829c52a6ca79150a5b6e62528b /sql/sql_callback.h
parentInitial commit. (diff)
downloadmariadb-10.5-a175314c3e5827eb193872241446f2f8f5c9d33c.tar.xz
mariadb-10.5-a175314c3e5827eb193872241446f2f8f5c9d33c.zip
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+/*
+ Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+
+ 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
+*/
+
+#ifndef SQL_CALLBACK_INCLUDED
+#define SQL_CALLBACK_INCLUDED
+
+/**
+ Macro used for an internal callback.
+
+ The macro will check that the object exists and that the function
+ is defined. If that is the case, it will call the function with the
+ given parameters.
+
+ If the object or the function is not defined, the callback will be
+ considered successful (nothing needed to be done) and will
+ therefore return no error.
+ */
+
+#define MYSQL_CALLBACK(OBJ, FUNC, PARAMS) \
+ do { \
+ if ((OBJ) && ((OBJ)->FUNC)) \
+ (OBJ)->FUNC PARAMS; \
+ } while (0)
+
+#define MYSQL_CALLBACK_ELSE(OBJ, FUNC, PARAMS, ELSE) \
+ (((OBJ) && ((OBJ)->FUNC)) ? (OBJ)->FUNC PARAMS : (ELSE))
+
+#endif /* SQL_CALLBACK_INCLUDED */