MDEV-21327 : MDL wait notification for innodb background threadpool

libmysqld/CMakeLists.txt

@@ -21,6 +21,7 @@ INCLUDE_DIRECTORIES(
 ${CMAKE_SOURCE_DIR}/include 
 ${CMAKE_SOURCE_DIR}/libmysqld
 ${CMAKE_SOURCE_DIR}/sql
+${CMAKE_SOURCE_DIR}/tpool
 ${CMAKE_BINARY_DIR}/sql 
 ${PCRE_INCLUDES}
 ${ZLIB_INCLUDE_DIR}
@@ -456,7 +457,7 @@ IF(NOT DISABLE_SHARED)
     SET_TARGET_PROPERTIES(libmysqld PROPERTIES CLEAN_DIRECT_OUTPUT 1)
     TARGET_LINK_LIBRARIES(libmysqld ${CRC32_LIBRARY})
     SET_TARGET_PROPERTIES(mysqlserver PROPERTIES CLEAN_DIRECT_OUTPUT 1)
-    TARGET_LINK_LIBRARIES(mysqlserver ${CRC32_LIBRARY})
+    TARGET_LINK_LIBRARIES(mysqlserver ${CRC32_LIBRARY} tpool)
     IF(LIBMYSQLD_SO_EXTRA_LIBS)
        TARGET_LINK_LIBRARIES(libmysqld ${LIBMYSQLD_SO_EXTRA_LIBS})
     ENDIF()

sql/CMakeLists.txt

@@ -44,18 +44,14 @@ ENDIF()
 
 INCLUDE_DIRECTORIES(
 ${CMAKE_SOURCE_DIR}/include
-${CMAKE_SOURCE_DIR}/sql 
+${CMAKE_SOURCE_DIR}/sql
 ${PCRE_INCLUDES}
 ${ZLIB_INCLUDE_DIR}
 ${SSL_INCLUDE_DIRS}
 ${CMAKE_BINARY_DIR}/sql
+${CMAKE_SOURCE_DIR}/tpool
 )
 
-
-
-
-
-
 ADD_CUSTOM_COMMAND(
   OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/lex_token.h
   COMMAND gen_lex_token > lex_token.h
@@ -194,6 +190,7 @@ ADD_LIBRARY(sql STATIC ${SQL_SOURCE})
 DTRACE_INSTRUMENT(sql)
 TARGET_LINK_LIBRARIES(sql
   mysys mysys_ssl dbug strings vio pcre2-8
+  tpool
   ${LIBWRAP} ${LIBCRYPT} ${LIBDL} ${CMAKE_THREAD_LIBS_INIT}
   ${SSL_LIBRARIES}
   ${LIBSYSTEMD})

sql/mdl.cc

@@ -24,6 +24,8 @@
 #include <mysql/plugin.h>
 #include <mysql/service_thd_wait.h>
 #include <mysql/psi/mysql_stage.h>
+#include <tpool.h>
+
 #ifdef HAVE_PSI_INTERFACE
 static PSI_mutex_key key_MDL_wait_LOCK_wait_status;
 
@@ -1125,6 +1127,7 @@ MDL_wait::timed_wait(MDL_context_owner *owner, struct timespec *abs_timeout,
   owner->ENTER_COND(&m_COND_wait_status, &m_LOCK_wait_status,
                     wait_state_name, & old_stage);
   thd_wait_begin(NULL, THD_WAIT_META_DATA_LOCK);
+  tpool::tpool_wait_begin();
   while (!m_wait_status && !owner->is_killed() &&
          wait_result != ETIMEDOUT && wait_result != ETIME)
   {
@@ -1147,6 +1150,7 @@ MDL_wait::timed_wait(MDL_context_owner *owner, struct timespec *abs_timeout,
     wait_result= mysql_cond_timedwait(&m_COND_wait_status, &m_LOCK_wait_status,
                                       abs_timeout);
   }
+  tpool::tpool_wait_end();
   thd_wait_end(NULL);
 
   if (m_wait_status == EMPTY)

storage/innobase/CMakeLists.txt

@@ -155,8 +155,7 @@ MYSQL_ADD_PLUGIN(innobase ${INNOBASE_SOURCES} STORAGE_ENGINE
 	${CRC32_LIBRARY}
 	${NUMA_LIBRARY}
 	${LIBSYSTEMD}
-	${LINKER_SCRIPT}
-	tpool)
+	${LINKER_SCRIPT})
 
 IF(NOT TARGET innobase)
   RETURN()
@@ -194,5 +193,6 @@ IF(MSVC)
 ENDIF()
 
 IF(NOT (PLUGIN_INNOBASE STREQUAL DYNAMIC))
+  TARGET_LINK_LIBRARIES(innobase tpool)
   ADD_SUBDIRECTORY(${CMAKE_SOURCE_DIR}/extra/mariabackup ${CMAKE_BINARY_DIR}/extra/mariabackup)
 ENDIF()