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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: sql_bitmap.h
/* Copyright (c) 2003, 2013, Oracle and/or its affiliates Copyright (c) 2009, 2013, Monty Program Ab. 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 */ /* Implementation of a bitmap type. The idea with this is to be able to handle any constant number of bits but also be able to use 32 or 64 bits bitmaps very efficiently */ #ifndef SQL_BITMAP_INCLUDED #define SQL_BITMAP_INCLUDED #include <my_sys.h> #include <my_bitmap.h> #include <my_bit.h> /* An iterator to quickly walk over bits in ulonglong bitmap. */ class Table_map_iterator { ulonglong bmp; public: Table_map_iterator(ulonglong t): bmp(t){} uint next_bit() { if (!bmp) return BITMAP_END; uint bit= my_find_first_bit(bmp); bmp &= ~(1ULL << bit); return bit; } int operator++(int) { return next_bit(); } enum { BITMAP_END= 64 }; }; template <uint width> class Bitmap { /* Workaround GCC optimizer bug (generating SSE instuctions on unaligned data) */ #if defined (__GNUC__) && defined(__x86_64__) && (__GNUC__ < 6) && !defined(__clang__) #define NEED_GCC_NO_SSE_WORKAROUND #endif #ifdef NEED_GCC_NO_SSE_WORKAROUND #pragma GCC push_options #pragma GCC target ("no-sse") #endif private: static const int BITS_PER_ELEMENT= sizeof(ulonglong) * 8; static const int ARRAY_ELEMENTS= (width + BITS_PER_ELEMENT - 1) / BITS_PER_ELEMENT; static const ulonglong ALL_BITS_SET= ULLONG_MAX; ulonglong buffer[ARRAY_ELEMENTS]; uint bit_index(uint n) const { DBUG_ASSERT(n < width); return ARRAY_ELEMENTS == 1 ? 0 : n / BITS_PER_ELEMENT; } ulonglong bit_mask(uint n) const { DBUG_ASSERT(n < width); return ARRAY_ELEMENTS == 1 ? 1ULL << n : 1ULL << (n % BITS_PER_ELEMENT); } ulonglong last_element_mask(int n) const { DBUG_ASSERT(n % BITS_PER_ELEMENT != 0); return bit_mask(n) - 1; } public: /* The default constructor does nothing. The caller is supposed to either zero the memory or to call set_all()/clear_all()/set_prefix() to initialize bitmap. */ Bitmap() = default; explicit Bitmap(uint prefix) { set_prefix(prefix); } void init(uint prefix) { set_prefix(prefix); } uint length() const { return width; } void set_bit(uint n) { buffer[bit_index(n)] |= bit_mask(n); } void clear_bit(uint n) { buffer[bit_index(n)] &= ~bit_mask(n); } bool is_set(uint n) const { return buffer[bit_index(n)] & bit_mask(n); } void set_prefix(uint prefix_size) { set_if_smaller(prefix_size, width); size_t idx= prefix_size / BITS_PER_ELEMENT; for (size_t i= 0; i < idx; i++) buffer[i]= ALL_BITS_SET; if (prefix_size % BITS_PER_ELEMENT) buffer[idx++]= last_element_mask(prefix_size); for (size_t i= idx; i < ARRAY_ELEMENTS; i++) buffer[i]= 0; } bool is_prefix(uint prefix_size) const { DBUG_ASSERT(prefix_size <= width); size_t idx= prefix_size / BITS_PER_ELEMENT; for (size_t i= 0; i < idx; i++) if (buffer[i] != ALL_BITS_SET) return false; if (prefix_size % BITS_PER_ELEMENT) if (buffer[idx++] != last_element_mask(prefix_size)) return false; for (size_t i= idx; i < ARRAY_ELEMENTS; i++) if (buffer[i] != 0) return false; return true; } void set_all() { if (width % BITS_PER_ELEMENT) set_prefix(width); else if (ARRAY_ELEMENTS > 1) memset(buffer, 0xff, sizeof(buffer)); else buffer[0] = ALL_BITS_SET; } void clear_all() { if (ARRAY_ELEMENTS > 1) memset(buffer, 0, sizeof(buffer)); else buffer[0]= 0; } void intersect(const Bitmap& map2) { for (size_t i= 0; i < ARRAY_ELEMENTS; i++) buffer[i] &= map2.buffer[i]; } private: /* Intersect with a bitmap represented as as longlong. In addition, pad the rest of the bitmap with 0 or 1 bits depending on pad_with_ones parameter. */ void intersect_and_pad(ulonglong map2buff, bool pad_with_ones) { buffer[0] &= map2buff; for (size_t i= 1; i < ARRAY_ELEMENTS; i++) buffer[i]= pad_with_ones ? ALL_BITS_SET : 0; if (ARRAY_ELEMENTS > 1 && (width % BITS_PER_ELEMENT) && pad_with_ones) buffer[ARRAY_ELEMENTS - 1]= last_element_mask(width); } public: void intersect(ulonglong map2buff) { intersect_and_pad(map2buff, 0); } /* Use highest bit for all bits above first element. */ void intersect_extended(ulonglong map2buff) { intersect_and_pad(map2buff, (map2buff & (1ULL << 63))); } void subtract(const Bitmap& map2) { for (size_t i= 0; i < ARRAY_ELEMENTS; i++) buffer[i] &= ~(map2.buffer[i]); } void merge(const Bitmap& map2) { for (size_t i= 0; i < ARRAY_ELEMENTS; i++) buffer[i] |= map2.buffer[i]; } bool is_clear_all() const { for (size_t i= 0; i < ARRAY_ELEMENTS; i++) if (buffer[i]) return false; return true; } bool is_subset(const Bitmap& map2) const { for (size_t i= 0; i < ARRAY_ELEMENTS; i++) if (buffer[i] & ~(map2.buffer[i])) return false; return true; } bool is_overlapping(const Bitmap& map2) const { for (size_t i= 0; i < ARRAY_ELEMENTS; i++) if (buffer[i] & map2.buffer[i]) return true; return false; } bool operator==(const Bitmap& map2) const { if (ARRAY_ELEMENTS > 1) return !memcmp(buffer,map2.buffer,sizeof(buffer)); return buffer[0] == map2.buffer[0]; } bool operator!=(const Bitmap& map2) const { return !(*this == map2); } /* Print hexadecimal representation of bitmap. Truncate trailing zeros. */ char *print(char *buf) const { size_t last; /*index of the last non-zero element, or 0. */ for (last= ARRAY_ELEMENTS - 1; last && !buffer[last]; last--){} const int HEX_DIGITS_PER_ELEMENT= BITS_PER_ELEMENT / 4; for (size_t i= 0; i < last; i++) { ulonglong num = buffer[i]; uint shift = BITS_PER_ELEMENT - 4; size_t pos= i * HEX_DIGITS_PER_ELEMENT; for (size_t j= 0; j < HEX_DIGITS_PER_ELEMENT; j++) { buf[pos + j]= _dig_vec_upper[(num >> shift) & 0xf]; shift += 4; } } longlong2str(buffer[last], buf, 16); return buf; } ulonglong to_ulonglong() const { return buffer[0]; } uint bits_set() { uint res= 0; for (size_t i= 0; i < ARRAY_ELEMENTS; i++) res += my_count_bits(buffer[i]); return res; } class Iterator { const Bitmap& map; uint offset; Table_map_iterator tmi; public: Iterator(const Bitmap<width>& map2) : map(map2), offset(0), tmi(map2.buffer[0]) {} int operator++(int) { for (;;) { int nextbit= tmi++; if (nextbit != Table_map_iterator::BITMAP_END) return offset + nextbit; if (offset + BITS_PER_ELEMENT >= map.length()) return BITMAP_END; offset += BITS_PER_ELEMENT; tmi= Table_map_iterator(map.buffer[offset / BITS_PER_ELEMENT]); } } enum { BITMAP_END = width }; }; #ifdef NEED_GCC_NO_SSE_WORKAROUND #pragma GCC pop_options #undef NEED_GCC_NO_SSE_WORKAROUND #endif }; typedef Bitmap<MAX_INDEXES> key_map; /* Used for finding keys */ #endif /* SQL_BITMAP_INCLUDED */
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