name : service_thd_mdl.h /* Copyright (c) 2019, MariaDB Corporation. 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 */ #pragma once /** @file include/mysql/service_thd_mdl.h This service provides functions for plugins and storage engines to access metadata locks. */ #ifdef __cplusplus extern "C" { #endif extern struct thd_mdl_service_st { void *(*thd_mdl_context)(MYSQL_THD); } *thd_mdl_service; #ifdef MYSQL_DYNAMIC_PLUGIN # define thd_mdl_context(_THD) thd_mdl_service->thd_mdl_context(_THD) #else /** MDL_context accessor @param thd the current session @return pointer to thd->mdl_context */ void *thd_mdl_context(MYSQL_THD thd); #endif #ifdef __cplusplus } #endif