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aligned.h
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aria_backup.h
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assume_aligned.h
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atomic
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authors.h
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backup.h
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bounded_queue.h
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client_settings.h
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compat56.h
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config.h
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contributors.h
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create_options.h
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create_tmp_table.h
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cset_narrowing.h
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custom_conf.h
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datadict.h
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ddl_log.h
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debug.h
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debug_sync.h
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derived_handler.h
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derror.h
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des_key_file.h
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discover.h
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dur_prop.h
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embedded_priv.h
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event_data_objects.h
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event_db_repository.h
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event_parse_data.h
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event_queue.h
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event_scheduler.h
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events.h
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field.h
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field_comp.h
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filesort.h
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filesort_utils.h
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ft_global.h
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gcalc_slicescan.h
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gcalc_tools.h
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grant.h
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group_by_handler.h
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gstream.h
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ha_handler_stats.h
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ha_partition.h
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ha_sequence.h
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handle_connections_win.h
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handler.h
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hash.h
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hash_filo.h
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heap.h
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hostname.h
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ilist.h
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init.h
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innodb_priv.h
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item.h
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item_cmpfunc.h
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item_create.h
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item_func.h
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item_geofunc.h
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item_jsonfunc.h
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item_row.h
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item_strfunc.h
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item_subselect.h
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item_sum.h
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item_timefunc.h
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item_vers.h
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item_windowfunc.h
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item_xmlfunc.h
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json_table.h
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key.h
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keycaches.h
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lex.h
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lex_string.h
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lex_symbol.h
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lf.h
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lock.h
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log.h
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log_event.h
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log_event_data_type.h
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log_event_old.h
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log_slow.h
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maria.h
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mariadb.h
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mdl.h
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mem_root_array.h
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message.h
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multi_range_read.h
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my_alarm.h
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my_apc.h
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my_atomic.h
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my_atomic_wrapper.h
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my_base.h
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my_bit.h
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my_bitmap.h
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my_check_opt.h
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my_compare.h
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my_counter.h
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my_cpu.h
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my_crypt.h
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my_decimal.h
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my_default.h
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my_handler_errors.h
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my_json_writer.h
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my_libwrap.h
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my_md5.h
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my_minidump.h
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my_nosys.h
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my_rdtsc.h
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my_rnd.h
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my_service_manager.h
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my_stack_alloc.h
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my_stacktrace.h
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my_time.h
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my_tree.h
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my_uctype.h
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my_user.h
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myisam.h
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myisamchk.h
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myisammrg.h
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myisampack.h
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mysqld.h
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mysqld_default_groups.h
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mysqld_suffix.h
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mysys_err.h
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opt_range.h
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opt_subselect.h
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opt_trace.h
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opt_trace_context.h
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parse_file.h
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partition_element.h
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partition_info.h
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password.h
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pfs_file_provider.h
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pfs_idle_provider.h
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pfs_memory_provider.h
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pfs_metadata_provider.h
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pfs_socket_provider.h
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pfs_stage_provider.h
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pfs_statement_provider.h
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pfs_table_provider.h
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pfs_thread_provider.h
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pfs_transaction_provider.h
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privilege.h
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probes_mysql.h
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probes_mysql_dtrace.h
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probes_mysql_nodtrace.h
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procedure.h
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protocol.h
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proxy_protocol.h
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queues.h
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records.h
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repl_failsafe.h
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replication.h
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rijndael.h
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rowid_filter.h
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rpl_constants.h
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rpl_filter.h
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rpl_gtid.h
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rpl_injector.h
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rpl_mi.h
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rpl_parallel.h
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rpl_record.h
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rpl_record_old.h
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rpl_reporting.h
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rpl_rli.h
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rpl_tblmap.h
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rpl_utility.h
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scheduler.h
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scope.h
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select_handler.h
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semisync.h
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semisync_master.h
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semisync_master_ack_receiver.h
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semisync_slave.h
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service_versions.h
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session_tracker.h
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set_var.h
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slave.h
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socketpair.h
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source_revision.h
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sp.h
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sp_cache.h
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sp_head.h
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sp_pcontext.h
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sp_rcontext.h
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span.h
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spatial.h
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sql_acl.h
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sql_admin.h
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sql_alloc.h
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sql_alter.h
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sql_analyse.h
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sql_analyze_stmt.h
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sql_array.h
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sql_audit.h
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sql_base.h
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sql_basic_types.h
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sql_binlog.h
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sql_bitmap.h
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sql_bootstrap.h
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sql_cache.h
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sql_callback.h
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sql_class.h
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sql_cmd.h
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sql_connect.h
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sql_const.h
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sql_crypt.h
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sql_cte.h
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sql_cursor.h
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sql_db.h
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sql_debug.h
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sql_delete.h
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sql_derived.h
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sql_digest.h
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sql_digest_stream.h
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sql_do.h
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sql_error.h
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sql_explain.h
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sql_expression_cache.h
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sql_get_diagnostics.h
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sql_handler.h
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sql_help.h
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sql_hset.h
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sql_i_s.h
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sql_insert.h
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sql_join_cache.h
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sql_lex.h
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sql_lifo_buffer.h
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sql_limit.h
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sql_list.h
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sql_load.h
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sql_locale.h
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sql_manager.h
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sql_mode.h
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sql_parse.h
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sql_partition.h
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sql_partition_admin.h
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sql_plist.h
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sql_plugin.h
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sql_plugin_compat.h
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sql_prepare.h
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sql_priv.h
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sql_profile.h
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sql_reload.h
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sql_rename.h
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sql_repl.h
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sql_schema.h
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sql_select.h
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sql_sequence.h
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sql_servers.h
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sql_show.h
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sql_signal.h
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sql_sort.h
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sql_statistics.h
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sql_string.h
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sql_table.h
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sql_tablespace.h
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sql_test.h
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sql_time.h
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sql_trigger.h
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sql_truncate.h
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sql_tvc.h
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sql_type.h
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sql_type_fixedbin.h
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sql_type_fixedbin_storage.h
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sql_type_geom.h
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sql_type_int.h
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sql_type_json.h
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sql_type_real.h
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sql_type_string.h
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sql_udf.h
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sql_union.h
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sql_update.h
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sql_view.h
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sql_window.h
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ssl_compat.h
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strfunc.h
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structs.h
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sys_vars_shared.h
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t_ctype.h
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table.h
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table_cache.h
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thr_alarm.h
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thr_lock.h
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thr_malloc.h
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thr_timer.h
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thread_cache.h
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threadpool.h
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threadpool_generic.h
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threadpool_winsockets.h
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transaction.h
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tzfile.h
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tztime.h
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uniques.h
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unireg.h
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vers_string.h
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violite.h
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waiting_threads.h
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welcome_copyright_notice.h
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win_tzname_data.h
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winservice.h
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wqueue.h
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wsrep.h
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wsrep_applier.h
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wsrep_binlog.h
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wsrep_client_service.h
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wsrep_client_state.h
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wsrep_condition_variable.h
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wsrep_high_priority_service.h
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wsrep_mutex.h
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wsrep_mysqld.h
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wsrep_mysqld_c.h
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wsrep_on.h
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wsrep_priv.h
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wsrep_schema.h
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wsrep_server_service.h
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wsrep_server_state.h
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wsrep_sst.h
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wsrep_storage_service.h
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wsrep_thd.h
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wsrep_trans_observer.h
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wsrep_types.h
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wsrep_utils.h
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wsrep_var.h
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wsrep_xid.h
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xa.h
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Editing: my_bit.h
/* Copyright (c) 2007, 2011, Oracle and/or its affiliates. Copyright (c) 2009, 2020, 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 */ #ifndef MY_BIT_INCLUDED #define MY_BIT_INCLUDED /* Some useful bit functions */ C_MODE_START extern const uchar _my_bits_reverse_table[256]; /* my_bit_log2_xxx() In the given value, find the highest bit set, which is the smallest X that satisfies the condition: (2^X >= value). Can be used as a reverse operation for (1<<X), to find X. Examples: - returns 0 for (1<<0) - returns 1 for (1<<1) - returns 2 for (1<<2) - returns 2 for 3, which has (1<<2) as the highest bit set. Note, the behaviour of log2(0) is not defined. Let's return 0 for the input 0, for the code simplicity. See the 000x branch. It covers both (1<<0) and 0. */ static inline CONSTEXPR uint my_bit_log2_hex_digit(uint8 value) { return value & 0x0C ? /*1100*/ (value & 0x08 ? /*1000*/ 3 : /*0100*/ 2) : /*0010*/ (value & 0x02 ? /*0010*/ 1 : /*000x*/ 0); } static inline CONSTEXPR uint my_bit_log2_uint8(uint8 value) { return value & 0xF0 ? my_bit_log2_hex_digit((uint8) (value >> 4)) + 4: my_bit_log2_hex_digit(value); } static inline CONSTEXPR uint my_bit_log2_uint16(uint16 value) { return value & 0xFF00 ? my_bit_log2_uint8((uint8) (value >> 8)) + 8 : my_bit_log2_uint8((uint8) value); } static inline CONSTEXPR uint my_bit_log2_uint32(uint32 value) { return value & 0xFFFF0000UL ? my_bit_log2_uint16((uint16) (value >> 16)) + 16 : my_bit_log2_uint16((uint16) value); } static inline CONSTEXPR uint my_bit_log2_uint64(ulonglong value) { return value & 0xFFFFFFFF00000000ULL ? my_bit_log2_uint32((uint32) (value >> 32)) + 32 : my_bit_log2_uint32((uint32) value); } static inline CONSTEXPR uint my_bit_log2_size_t(size_t value) { #ifdef __cplusplus static_assert(sizeof(size_t) <= sizeof(ulonglong), "size_t <= ulonglong is an assumption that needs to be fixed " "for this architecture. Please create an issue on " "https://jira.mariadb.org"); #endif return my_bit_log2_uint64((ulonglong) value); } /* Count bits in 32bit integer Algorithm by Sean Anderson, according to: http://graphics.stanford.edu/~seander/bithacks.html under "Counting bits set, in parallel" (Original code public domain). */ static inline uint my_count_bits_uint32(uint32 v) { v = v - ((v >> 1) & 0x55555555); v = (v & 0x33333333) + ((v >> 2) & 0x33333333); return (((v + (v >> 4)) & 0xF0F0F0F) * 0x1010101) >> 24; } static inline uint my_count_bits(ulonglong x) { return my_count_bits_uint32((uint32)x) + my_count_bits_uint32((uint32)(x >> 32)); } /* Next highest power of two SYNOPSIS my_round_up_to_next_power() v Value to check RETURN Next or equal power of 2 Note: 0 will return 0 NOTES Algorithm by Sean Anderson, according to: http://graphics.stanford.edu/~seander/bithacks.html (Original code public domain) Comments shows how this works with 01100000000000000000000000001011 */ static inline uint32 my_round_up_to_next_power(uint32 v) { v--; /* 01100000000000000000000000001010 */ v|= v >> 1; /* 01110000000000000000000000001111 */ v|= v >> 2; /* 01111100000000000000000000001111 */ v|= v >> 4; /* 01111111110000000000000000001111 */ v|= v >> 8; /* 01111111111111111100000000001111 */ v|= v >> 16; /* 01111111111111111111111111111111 */ return v+1; /* 10000000000000000000000000000000 */ } static inline uint32 my_clear_highest_bit(uint32 v) { uint32 w=v >> 1; w|= w >> 1; w|= w >> 2; w|= w >> 4; w|= w >> 8; w|= w >> 16; return v & w; } static inline uint32 my_reverse_bits(uint32 key) { return ((uint32)_my_bits_reverse_table[ key & 255] << 24) | ((uint32)_my_bits_reverse_table[(key>> 8) & 255] << 16) | ((uint32)_my_bits_reverse_table[(key>>16) & 255] << 8) | (uint32)_my_bits_reverse_table[(key>>24) ]; } /* a number with the n lowest bits set an overflow-safe version of (1 << n) - 1 */ static inline uint64 my_set_bits(int n) { return (((1ULL << (n - 1)) - 1) << 1) | 1; } /* Create a mask of the significant bits for the last byte (1,3,7,..255) */ static inline uchar last_byte_mask(uint bits) { /* Get the number of used bits-1 (0..7) in the last byte */ unsigned int const used = (bits - 1U) & 7U; /* Return bitmask for the significant bits */ return (uchar) ((2U << used) - 1); } static inline uint my_bits_in_bytes(uint n) { return ((n + 7) / 8); } #ifdef _MSC_VER #include <intrin.h> #endif /* Find the position of the first(least significant) bit set in the argument. Returns 64 if the argument was 0. */ static inline uint my_find_first_bit(ulonglong n) { if(!n) return 64; #if defined(__GNUC__) return __builtin_ctzll(n); #elif defined(_MSC_VER) #if defined(_M_IX86) unsigned long bit; if( _BitScanForward(&bit, (uint)n)) return bit; _BitScanForward(&bit, (uint)(n>>32)); return bit + 32; #else unsigned long bit; _BitScanForward64(&bit, n); return bit; #endif #else /* Generic case */ uint shift= 0; static const uchar last_bit[16] = { 32, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0}; uint bit; while ((bit = last_bit[(n >> shift) & 0xF]) == 32) shift+= 4; return shift+bit; #endif } C_MODE_END #endif /* MY_BIT_INCLUDED */
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