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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /sql/sql_callback.h | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.tar.xz mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sql/sql_callback.h')
-rw-r--r-- | sql/sql_callback.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/sql/sql_callback.h b/sql/sql_callback.h new file mode 100644 index 00000000..1f798ad5 --- /dev/null +++ b/sql/sql_callback.h @@ -0,0 +1,42 @@ +/* + 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 */ |