Added THD as parameter to filesort. Removed not used 'special' argument.

sql/mysql_priv.h:
  Fix for changed parameters to filesort
sql/sql_delete.cc:
  Fix for changed parameters to filesort
sql/sql_select.cc:
  Fix for changed parameters to filesort
sql/sql_table.cc:
  Fix for changed parameters to filesort
sql/sql_test.cc:
  Removed not used special parameter
sql/sql_update.cc:
  Fix for changed parameters to filesort

sql/filesort.cc

@@ -63,24 +63,21 @@ static uint sortlength(SORT_FIELD *sortorder,uint length);
 	  table->record_pointers
 	*/
 
-ha_rows filesort(TABLE *table, SORT_FIELD *sortorder, uint s_length,
-		 SQL_SELECT *select, ha_rows special, ha_rows max_rows,
-		 ha_rows *examined_rows)
+ha_rows filesort(THD *thd, TABLE *table, SORT_FIELD *sortorder, uint s_length,
+		 SQL_SELECT *select, ha_rows max_rows, ha_rows *examined_rows)
 {
   int error;
   ulong memavl;
   uint maxbuffer;
+  uint i;
   BUFFPEK *buffpek;
   ha_rows records;
   uchar **sort_keys;
   IO_CACHE tempfile, buffpek_pointers, *selected_records_file, *outfile; 
   SORTPARAM param;
-  THD *thd= current_thd;
-
-  DBUG_ENTER("filesort");
-  DBUG_EXECUTE("info",TEST_filesort(sortorder,s_length,special););
   CHARSET_INFO *charset=table->table_charset;
-  uint i;
+  DBUG_ENTER("filesort");
+  DBUG_EXECUTE("info",TEST_filesort(sortorder,s_length););
 #ifdef SKIP_DBUG_IN_FILESORT
   DBUG_PUSH("");		/* No DBUG here */
 #endif
@@ -111,27 +108,15 @@ ha_rows filesort(TABLE *table, SORT_FIELD *sortorder, uint s_length,
   {
     statistic_increment(filesort_scan_count, &LOCK_status);
   }
-  if (select && my_b_inited(&select->file))
-  {
-    records=special=select->records;		/* purecov: deadcode */
-    selected_records_file= &select->file;	/* purecov: deadcode */
-    reinit_io_cache(selected_records_file,READ_CACHE,0L,0,0); /* purecov: deadcode */
-  }
-  else if (special)
-  {
-    records=special;				/* purecov: deadcode */
-    selected_records_file= outfile;		/* purecov: deadcode */
-    reinit_io_cache(selected_records_file,READ_CACHE,0L,0,0); /* purecov: deadcode */
-  }
 #ifdef CAN_TRUST_RANGE
-  else if (select && select->quick && select->quick->records > 0L)
+  if (select && select->quick && select->quick->records > 0L)
   {
     records=min((ha_rows) (select->quick->records*2+EXTRA_RECORDS*2),
 		table->file->records)+EXTRA_RECORDS;
     selected_records_file=0;
   }
-#endif
   else
+#endif
   {
     records=table->file->estimate_number_of_rows();
     selected_records_file= 0;

sql/mysql_priv.h

@@ -611,7 +611,7 @@ pthread_handler_decl(handle_manager, arg);
 #ifndef DBUG_OFF
 void print_where(COND *cond,const char *info);
 void print_cached_tables(void);
-void TEST_filesort(SORT_FIELD *sortorder,uint s_length, ha_rows special);
+void TEST_filesort(SORT_FIELD *sortorder,uint s_length);
 #endif
 void mysql_print_status(THD *thd);
 /* key.cc */
@@ -792,9 +792,9 @@ void init_read_record(READ_RECORD *info, THD *thd, TABLE *reg_form,
 		      SQL_SELECT *select,
 		      int use_record_cache, bool print_errors);
 void end_read_record(READ_RECORD *info);
-ha_rows filesort(TABLE *form,struct st_sort_field *sortorder, uint s_length,
-		 SQL_SELECT *select, ha_rows special,ha_rows max_rows,
-		 ha_rows *examined_rows);
+ha_rows filesort(THD *thd, TABLE *form,struct st_sort_field *sortorder,
+		 uint s_length, SQL_SELECT *select,
+		 ha_rows max_rows, ha_rows *examined_rows);
 void change_double_for_sort(double nr,byte *to);
 int get_quick_record(SQL_SELECT *select);
 int calc_weekday(long daynr,bool sunday_first_day_of_week);

sql/sql_delete.cc

@@ -117,8 +117,8 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, ORDER *order,
                                              MYF(MY_FAE | MY_ZEROFILL));
     if (setup_order(thd, &tables, fields, all_fields, order) ||
         !(sortorder=make_unireg_sortorder(order, &length)) ||
-        (table->found_records = filesort(table, sortorder, length,
-                                        (SQL_SELECT *) 0, 0L, HA_POS_ERROR,
+        (table->found_records = filesort(thd, table, sortorder, length,
+                                        (SQL_SELECT *) 0, HA_POS_ERROR,
 					 &examined_rows))
         == HA_POS_ERROR)
     {

sql/sql_select.cc

@@ -112,7 +112,8 @@ static Item* part_of_refkey(TABLE *form,Field *field);
 static uint find_shortest_key(TABLE *table, key_map usable_keys);
 static bool test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,
 				    ha_rows select_limit, bool no_changes);
-static int create_sort_index(JOIN_TAB *tab,ORDER *order,ha_rows select_limit);
+static int create_sort_index(THD *thd, JOIN_TAB *tab,ORDER *order,
+			     ha_rows select_limit);
 static int remove_duplicates(JOIN *join,TABLE *entry,List<Item> &fields,
 			     Item *having);
 static int remove_dup_with_compare(THD *thd, TABLE *entry, Field **field,
@@ -748,7 +749,7 @@ JOIN::exec()
     {
       DBUG_PRINT("info",("Sorting for group"));
       thd->proc_info="Sorting for group";
-      if (create_sort_index(&join_tab[const_tables], group_list,
+      if (create_sort_index(thd, &join_tab[const_tables], group_list,
 			    HA_POS_ERROR) ||
 	  make_sum_func_list(this, all_fields) ||
 	  alloc_group_fields(this, group_list))
@@ -763,7 +764,7 @@ JOIN::exec()
       {
 	DBUG_PRINT("info",("Sorting for order"));
 	thd->proc_info="Sorting for order";
-	if (create_sort_index(&join_tab[const_tables], order,
+	if (create_sort_index(thd, &join_tab[const_tables], order,
                               HA_POS_ERROR))
 	  DBUG_VOID_RETURN;
 	order=0;
@@ -866,7 +867,7 @@ JOIN::exec()
       if (group_list)
       {
 	thd->proc_info="Creating sort index";
-	if (create_sort_index(join_tab, group_list, HA_POS_ERROR) ||
+	if (create_sort_index(thd, join_tab, group_list, HA_POS_ERROR) ||
 	    alloc_group_fields(this, group_list))
 	{
 	  free_tmp_table(thd,tmp_table2);	/* purecov: inspected */
@@ -962,7 +963,7 @@ JOIN::exec()
 	DBUG_EXECUTE("where",print_where(conds,"having after sort"););
       }
     }
-    if (create_sort_index(&join_tab[const_tables],
+    if (create_sort_index(thd, &join_tab[const_tables],
                         group_list ? group_list : order,
                         (having_list || group_list ||
                          (select_options & OPTION_FOUND_ROWS)) ?
@@ -5795,7 +5796,7 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
 *****************************************************************************/
 
 static int
-create_sort_index(JOIN_TAB *tab,ORDER *order,ha_rows select_limit)
+create_sort_index(THD *thd, JOIN_TAB *tab,ORDER *order,ha_rows select_limit)
 {
   SORT_FIELD *sortorder;
   uint length;
@@ -5839,8 +5840,8 @@ create_sort_index(JOIN_TAB *tab,ORDER *order,ha_rows select_limit)
   }
   if (table->tmp_table)
     table->file->info(HA_STATUS_VARIABLE);	// Get record count
-  table->found_records=filesort(table,sortorder,length,
-				select, 0L, select_limit, &examined_rows);
+  table->found_records=filesort(thd, table,sortorder, length,
+				select, select_limit, &examined_rows);
   tab->records=table->found_records;		// For SQL_CALC_ROWS
   delete select;				// filesort did select
   tab->select=0;
@@ -5938,7 +5939,7 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
   int error;
   ulong reclength,offset;
   uint field_count;
-  THD *thd= current_thd;
+  THD *thd= join->thd;
   DBUG_ENTER("remove_duplicates");
 
   entry->reginfo.lock_type=TL_WRITE;

sql/sql_table.cc

@@ -2099,8 +2099,8 @@ copy_data_between_tables(TABLE *from,TABLE *to,
 
     if (setup_order(thd, &tables, fields, all_fields, order) ||
         !(sortorder=make_unireg_sortorder(order, &length)) ||
-        (from->found_records = filesort(from, sortorder, length, 
-					(SQL_SELECT *) 0, 0L, HA_POS_ERROR,
+        (from->found_records = filesort(thd, from, sortorder, length, 
+					(SQL_SELECT *) 0, HA_POS_ERROR,
 					&examined_rows))
         == HA_POS_ERROR)
       goto err;

sql/sql_test.cc

@@ -97,7 +97,7 @@ void print_cached_tables(void)
 }
 
 
-void TEST_filesort(SORT_FIELD *sortorder,uint s_length, ha_rows special)
+void TEST_filesort(SORT_FIELD *sortorder,uint s_length)
 {
   char buff[256],buff2[256];
   String str(buff,sizeof(buff),default_charset_info);
@@ -131,8 +131,6 @@ void TEST_filesort(SORT_FIELD *sortorder,uint s_length, ha_rows special)
   out.append('\0');				// Purify doesn't like c_ptr()
   DBUG_LOCK_FILE;
   VOID(fputs("\nInfo about FILESORT\n",DBUG_FILE));
-  if (special)
-    fprintf(DBUG_FILE,"Records to sort: %ld\n",special);
   fprintf(DBUG_FILE,"Sortorder: %s\n",out.ptr());
   DBUG_UNLOCK_FILE;
   DBUG_VOID_RETURN;

sql/sql_update.cc

@@ -190,8 +190,8 @@ int mysql_update(THD *thd,
                                                MYF(MY_FAE | MY_ZEROFILL));
       if (setup_order(thd, &tables, fields, all_fields, order) ||
           !(sortorder=make_unireg_sortorder(order, &length)) ||
-          (table->found_records = filesort(table, sortorder, length,
-                                           (SQL_SELECT *) 0, 0L,
+          (table->found_records = filesort(thd, table, sortorder, length,
+                                           (SQL_SELECT *) 0,
 					   HA_POS_ERROR, &examined_rows))
           == HA_POS_ERROR)
       {