Merge shellback.(none):/home/msvensson/mysql/mysql-5.0-maint

into  shellback.(none):/home/msvensson/mysql/mysql-5.1-maint

mysql-test/include/mix1.inc

@@ -149,7 +149,8 @@ DROP TABLE t1, t2;
 #
 # Bug #22728 - Handler_rollback value is growing
 #
-flush status;
+
+let $before= `show /*!50002 GLOBAL */ status like 'Handler_rollback'`;
 create table t1 (c1 int) engine=innodb;
 connect (con1,localhost,root,,);
 connect (con2,localhost,root,,);
@@ -158,7 +159,11 @@ handler t1 open;
 handler t1 read first;
 disconnect con2;
 connection con1;
-show /*!50002 GLOBAL */ status like 'Handler_rollback';
+let $after= `show /*!50002 GLOBAL */ status like 'Handler_rollback'`;
+# Compare the before and after value, it should be equal
+--disable_query_log
+eval select STRCMP("$before", "$after") as "Before and after comparison";
+--enable_query_log
 connection default;
 drop table t1;
 disconnect con1;

mysql-test/r/innodb_mysql.result

@@ -105,14 +105,12 @@ SELECT `id1` FROM `t1` WHERE `id1` NOT IN (SELECT `id1` FROM `t2` WHERE `id2` =
 id1
 2
 DROP TABLE t1, t2;
-flush status;
 create table t1 (c1 int) engine=innodb;
 handler t1 open;
 handler t1 read first;
 c1
-show /*!50002 GLOBAL */ status like 'Handler_rollback';
-Variable_name	Value
-Handler_rollback	0
+Before and after comparison
+0
 drop table t1;
 End of 4.1 tests
 create table t1m (a int) engine = MEMORY;

sql/mysqld.cc

@@ -6581,6 +6581,10 @@ static int show_ssl_get_cipher_list(THD *thd, SHOW_VAR *var, char *buff)
 #endif /* HAVE_OPENSSL */
 
 
+/*
+  Variables shown by SHOW STATUS in alphabetical order
+*/
+
 SHOW_VAR status_vars[]= {
   {"Aborted_clients",          (char*) &aborted_threads,        SHOW_LONG},
   {"Aborted_connects",         (char*) &aborted_connects,       SHOW_LONG},
@@ -8088,16 +8092,20 @@ void refresh_status(THD *thd)
 {
   pthread_mutex_lock(&LOCK_status);
 
-  /* We must update the global status before cleaning up the thread */
+  /* Add thread's status variabes to global status */
   add_to_status(&global_status_var, &thd->status_var);
+
+  /* Reset thread's status variables */
   bzero((char*) &thd->status_var, sizeof(thd->status_var));
 
+  /* Reset some global variables */
   for (SHOW_VAR *ptr= status_vars; ptr->name; ptr++)
   {
     /* Note that SHOW_LONG_NOFLUSH variables are not reset */
     if (ptr->type == SHOW_LONG)
       *(ulong*) ptr->value= 0;
   }
+
   /* Reset the counters of all key caches (default and named). */
   process_key_caches(reset_key_cache_counters);
   pthread_mutex_unlock(&LOCK_status);

sql/set_var.cc

@@ -743,7 +743,7 @@ static int show_slave_skip_errors(THD *thd, SHOW_VAR *var, char *buff)
 #endif /* HAVE_REPLICATION */
 
 /*
-  Variables shown by SHOW variables in alphabetical order
+  Variables shown by SHOW VARIABLES in alphabetical order
 */
 
 SHOW_VAR init_vars[]= {

sql/sql_class.cc

@@ -513,14 +513,13 @@ THD::~THD()
 
 void add_to_status(STATUS_VAR *to_var, STATUS_VAR *from_var)
 {
-  ulong *end= (ulong*) ((byte*) to_var + offsetof(STATUS_VAR,
-						  last_system_status_var) +
+  ulong *end= (ulong*) ((byte*) to_var +
+                        offsetof(STATUS_VAR, last_system_status_var) +
 			sizeof(ulong));
   ulong *to= (ulong*) to_var, *from= (ulong*) from_var;
 
   while (to != end)
     *(to++)+= *(from++);
-  /* it doesn't make sense to add last_query_cost values */
 }
 
 /*

sql/sql_class.h

@@ -337,12 +337,17 @@ typedef struct system_status_var
   ulong com_stmt_reset;
   ulong com_stmt_close;
 
+  /*
+    Status variables which it does not make sense to add to
+    global status variable counter
+  */
   double last_query_cost;
 } STATUS_VAR;
 
 /*
-  This is used for 'show status'. It must be updated to the last ulong
-  variable in system_status_var
+  This is used for 'SHOW STATUS'. It must be updated to the last ulong
+  variable in system_status_var which is makes sens to add to the global
+  counter
 */
 
 #define last_system_status_var com_stmt_close

storage/myisam/sort.c

@@ -322,6 +322,9 @@ pthread_handler_t thr_find_all_keys(void *arg)
 
   if (my_thread_init())
     goto err;
+
+
+  { /* Add extra block since DBUG_ENTER declare variables */
     DBUG_ENTER("thr_find_all_keys");
     DBUG_PRINT("enter", ("master: %d", sort_param->master));
     if (sort_param->sort_info->got_error)
@@ -361,7 +364,7 @@ pthread_handler_t thr_find_all_keys(void *arg)
         uint skr;
         do
         {
-        skr=maxbuffer;
+          skr= maxbuffer;
           if (memavl < sizeof(BUFFPEK)*maxbuffer ||
               (keys=(memavl-sizeof(BUFFPEK)*maxbuffer)/
                (sort_length+sizeof(char*))) <= 1 ||
@@ -388,13 +391,15 @@ pthread_handler_t thr_find_all_keys(void *arg)
         else
           break;
       }
-    old_memavl=memavl;
-    if ((memavl=memavl/4*3) < MIN_SORT_MEMORY && old_memavl > MIN_SORT_MEMORY)
-      memavl=MIN_SORT_MEMORY;
+      old_memavl= memavl;
+      if ((memavl= memavl/4*3) < MIN_SORT_MEMORY &&
+          old_memavl > MIN_SORT_MEMORY)
+        memavl= MIN_SORT_MEMORY;
     }
     if (memavl < MIN_SORT_MEMORY)
     {
-    mi_check_print_error(sort_param->sort_info->param, "Sort buffer too small");
+      mi_check_print_error(sort_param->sort_info->param,
+                           "Sort buffer too small");
       goto err; /* purecov: tested */
     }
 
@@ -403,8 +408,8 @@ pthread_handler_t thr_find_all_keys(void *arg)
              sort_param->key + 1, keys);
     sort_param->sort_keys= sort_keys;
 
-  idx=error=0;
-  sort_keys[0]=(uchar*) (sort_keys+keys);
+    idx= error= 0;
+    sort_keys[0]= (uchar*) (sort_keys+keys);
 
     DBUG_PRINT("info", ("reading keys"));
     while (!(error= sort_param->sort_info->got_error) &&
@@ -424,9 +429,9 @@ pthread_handler_t thr_find_all_keys(void *arg)
                                    (BUFFPEK*) alloc_dynamic(&sort_param->buffpek),
                                    &sort_param->tempfile))
           goto err;
-      sort_keys[0]=(uchar*) (sort_keys+keys);
+        sort_keys[0]= (uchar*) (sort_keys+keys);
         memcpy(sort_keys[0], sort_keys[idx - 1], (size_t) sort_param->key_length);
-      idx=1;
+        idx= 1;
       }
       sort_keys[idx]= sort_keys[idx - 1] + sort_param->key_length;
     }
@@ -474,8 +479,8 @@ pthread_handler_t thr_find_all_keys(void *arg)
     if (!--sort_param->sort_info->threads_running)
       pthread_cond_signal(&sort_param->sort_info->cond);
     pthread_mutex_unlock(&sort_param->sort_info->mutex);
-
     DBUG_PRINT("exit", ("======== ending thread ========"));
+  }
   my_thread_end();
   return NULL;
 }