mariadb/sql/wsrep_on.h
Daniele Sciascia 2917bd0d2c Reduce compilation dependencies on wsrep_mysqld.h
Making changes to wsrep_mysqld.h causes large parts of server code to
be recompiled. The reason is that wsrep_mysqld.h is included by
sql_class.h, even tough very little of wsrep_mysqld.h is needed in
sql_class.h. This commit introduces a new header file, wsrep_on.h,
which is meant to be included from sql_class.h, and contains only
macros and variable declarations used to determine whether wsrep is
enabled.
Also, header wsrep.h should only contain definitions that are also
used outside of sql/. Therefore, move WSREP_TO_ISOLATION* and
WSREP_SYNC_WAIT macros to wsrep_mysqld.h.

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
2022-08-31 11:05:23 +03:00

63 lines
1.9 KiB
C

/* Copyright 2022 Codership Oy <http://www.codership.com>
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 Street, Fifth Floor, Boston, MA 02111-1301 USA */
#ifndef WSREP_ON_H
#define WSREP_ON_H
#ifdef WITH_WSREP
extern bool WSREP_ON_;
extern bool WSREP_PROVIDER_EXISTS_;
extern my_bool wsrep_emulate_bin_log;
extern ulong wsrep_forced_binlog_format;
#define WSREP_ON unlikely(WSREP_ON_)
/* use xxxxxx_NNULL macros when thd pointer is guaranteed to be non-null to
* avoid compiler warnings (GCC 6 and later) */
#define WSREP_NNULL(thd) \
(WSREP_PROVIDER_EXISTS_ && thd->variables.wsrep_on)
#define WSREP(thd) \
(thd && WSREP_NNULL(thd))
#define WSREP_CLIENT_NNULL(thd) \
(WSREP_NNULL(thd) && thd->wsrep_client_thread)
#define WSREP_CLIENT(thd) \
(WSREP(thd) && thd->wsrep_client_thread)
#define WSREP_EMULATE_BINLOG_NNULL(thd) \
(WSREP_NNULL(thd) && wsrep_emulate_bin_log)
#define WSREP_EMULATE_BINLOG(thd) \
(WSREP(thd) && wsrep_emulate_bin_log)
#define WSREP_BINLOG_FORMAT(my_format) \
((wsrep_forced_binlog_format != BINLOG_FORMAT_UNSPEC) ? \
wsrep_forced_binlog_format : my_format)
#else
#define WSREP_ON false
#define WSREP(T) (0)
#define WSREP_NNULL(T) (0)
#define WSREP_EMULATE_BINLOG(thd) (0)
#define WSREP_EMULATE_BINLOG_NNULL(thd) (0)
#define WSREP_BINLOG_FORMAT(my_format) ((ulong)my_format)
#endif
#endif