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# ==== Purpose ==== # # Sets the transaction as high priority while the START TRANSACTION # instruction is processed. # # It basically sets the thd->trx_priority=1 through a DBUG_EXECUTE_IF # instruction while START TRANSACTION is executed. # # Given that this uses the dbug facility to inject a flag into the # THD context, tests including this file will require debug builds to # run. # # This include file is used in WL#6835's testing. # # ==== Usage ==== # # --source include/start_transaction_high_priority.inc # --source include/have_debug.inc --let $include_filename= start_transaction_high_prio.inc --source include/begin_include_file.inc --disable_query_log SET GLOBAL DEBUG='+d,dbug_set_high_prio_trx'; --enable_query_log START TRANSACTION /* HIGH PRIORITY */; --disable_query_log SET GLOBAL DEBUG='-d,dbug_set_high_prio_trx'; --enable_query_log --let $include_filename= start_transaction_high_prio.inc --source include/end_include_file.inc