1 files changed, 58 insertions, 0 deletions
diff --git a/sql/wsrep_on.h b/sql/wsrep_on.h
new file mode 100644
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--- /dev/null
+++ b/sql/wsrep_on.h
@@ -0,0 +1,58 @@
+/* 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)
+
+#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)
+
+#endif
+#endif