WL#1034 update

cleanup before throwin away DYNAMIC_ARRAY for event storage,
once reallocated I get dangling pointers so that's not good.
solution will be found however ;)


sql/event.cc:
  - remove unneeded variables
  - remove commented out code
  - remove non-cs compliant comment
  - fix a bug when removing from memory cache
  - better close the tables than relying on sql_parse.cc::do_command()
    to do that
sql/event_executor.cc:
  - cleanup
sql/event_priv.h:
  -cleanup
sql/event_timed.cc:
  cleanup

sql/event.cc

@@ -73,17 +73,11 @@ Warning:
 
 bool mysql_event_table_exists= 1;
 DYNAMIC_ARRAY events_array;
-DYNAMIC_ARRAY EXEC_QUEUE_DARR_NAME;
-QUEUE EXEC_QUEUE_QUEUE_NAME;
+QUEUE EVEX_EQ_NAME;
 MEM_ROOT evex_mem_root;
 
 
-//extern volatile uint thread_running;
-////////////////////////////////////////////////////////////////////////
-////////////////////////////////////////////////////////////////////////
-////////////////     Static functions follow ///////////////////////////
-////////////////////////////////////////////////////////////////////////
-////////////////////////////////////////////////////////////////////////
+
 void
 evex_queue_init(EVEX_QUEUE_TYPE *queue)
 {
@@ -202,6 +196,7 @@ my_time_compare(TIME *a, TIME *b)
   DBUG_RETURN(0);
 }
 
+
 int
 evex_time_diff(TIME *a, TIME *b)
 {
@@ -519,14 +514,17 @@ db_create_event(THD *thd, event_timed *et)
     mysql_bin_log.write(&qinfo);
   }
 
-  // No need to close the table, it will be closed in sql_parse::do_command
   if (dbchanged)
     (void) mysql_change_db(thd, olddb, 1);
+  if (table)
+    close_thread_tables(thd);
   DBUG_RETURN(EVEX_OK);
 
 err:
   if (dbchanged)
     (void) mysql_change_db(thd, olddb, 1);
+  if (table)
+    close_thread_tables(thd);
   DBUG_RETURN(EVEX_GENERAL_ERROR);
 }
 
@@ -742,9 +740,7 @@ evex_load_and_compile_event(THD * thd, sp_name *spn, bool use_lock)
   VOID(push_dynamic(&events_array,(gptr) ett));
   ett_copy= dynamic_element(&events_array, events_array.elements - 1,
                             event_timed*);
-/**
-  VOID(push_dynamic(&evex_executing_queue, (gptr) &ett_copy));
-**/
+
   evex_queue_insert(&EVEX_EQ_NAME, (EVEX_PTOQEL) ett_copy);
 
   /*
@@ -754,19 +750,6 @@ evex_load_and_compile_event(THD * thd, sp_name *spn, bool use_lock)
   ett->free_sphead_on_delete= false;
   delete ett;
 
-  /*
-    We find where the first element resides in the array. And then do a
-    qsort of events_array.elements (the current number of elements).
-    We know that the elements are stored in a contiguous block w/o holes.
-  */
-/**
-  qsort((gptr) dynamic_element(&evex_executing_queue, 0, event_timed**),
-                               evex_executing_queue.elements,
-                               sizeof(event_timed **),
-                               (qsort_cmp) event_timed_compare);
-**/
-  evex_queue_sort(&EVEX_EQ_NAME);
-  
   if (use_lock)
     VOID(pthread_mutex_unlock(&LOCK_event_arrays));
 
@@ -791,40 +774,10 @@ evex_remove_from_cache(LEX_STRING *db, LEX_STRING *name, bool use_lock)
 
   if (use_lock)
     VOID(pthread_mutex_lock(&LOCK_event_arrays));
-/**
-  for (i= 0; i < evex_executing_queue.elements; ++i)
-  {
-    event_timed *et= *dynamic_element(&evex_executing_queue, i, event_timed**);
-    DBUG_PRINT("info", ("[%s.%s]==[%s.%s]?",db->str,name->str, et->dbname.str, 
-                        et->name.str));
-    if (!sortcmp_lex_string(*name, et->name, system_charset_info) &&
-        !sortcmp_lex_string(*db, et->dbname, system_charset_info))
-    {
-      int idx= get_index_dynamic(&events_array, (gptr) et);
-      //we are lucky the event is in the executing queue, no need of second pass
-      if (idx == -1)
-      {
-        //this should never happen
-        DBUG_PRINT("error", (" get_index_dynamic problem. %d."
-          "i=%d idx=%d evex_ex_queue.buf=%p evex_ex_queue.elements=%d et=%p\n"
-          "events_array=%p events_array.elements=%d events_array.buf=%p et=%p\n",
-           __LINE__, i, idx, &evex_executing_queue.buffer,
-           evex_executing_queue.elements, et, &events_array,
-           events_array.elements, events_array.buffer, et));
-        DBUG_ASSERT(0);
-      }
-      //destruct first and then remove. the destructor will delete sp_head
-      et->free_sp();
-      delete_dynamic_element(&events_array, idx);
-      delete_dynamic_element(&evex_executing_queue, i);
-      // ok, we have cleaned
-      goto done;
-    }
-  }
-**/
+
   for (i= 0; i < evex_queue_num_elements(EVEX_EQ_NAME); ++i)
   {
-    event_timed *et= *evex_queue_element(&EVEX_EQ_NAME, i, event_timed**);
+    event_timed *et= evex_queue_element(&EVEX_EQ_NAME, i, event_timed*);
     DBUG_PRINT("info", ("[%s.%s]==[%s.%s]?",db->str,name->str, et->dbname.str, 
                         et->name.str));
     if (!sortcmp_lex_string(*name, et->name, system_charset_info) &&
@@ -834,7 +787,7 @@ evex_remove_from_cache(LEX_STRING *db, LEX_STRING *name, bool use_lock)
       //we are lucky the event is in the executing queue, no need of second pass
       //destruct first and then remove. the destructor will delete sp_head
       et->free_sp();
-      evex_queue_delete_element(&EVEX_EQ_NAME, idx);
+      delete_dynamic_element(&events_array, idx);
       evex_queue_delete_element(&EVEX_EQ_NAME, i);
       // ok, we have cleaned
       goto done;

sql/event_executor.cc

@@ -25,7 +25,7 @@
   are not possible because the scheduler thread code is ran inside the
   main thread (no spawning takes place. If you want to debug client 
   connection then start with --one-thread and make the define
-  DBUG_FAULTY_THR2 !
+  DBUG_FAULTY_THR !
 */
 #define DBUG_FAULTY_THR2
 
@@ -202,9 +202,6 @@ event_executor_main(void *arg)
     thus data should be freed at later stage.
   */
   VOID(my_init_dynamic_array(&events_array, sizeof(event_timed), 50, 100));
-/**
-  VOID(my_init_dynamic_array(&evex_executing_queue, sizeof(event_timed *), 50, 100));
-**/
 
   evex_queue_init(&EVEX_EQ_NAME);
 
@@ -533,7 +530,7 @@ evex_load_events_from_db(THD *thd)
   while (!(read_record_info.read_record(&read_record_info)))
   {
     event_timed *et, *et_copy;
-    if (!(et= new event_timed()))
+    if (!(et= new event_timed))
     {
       DBUG_PRINT("evex_load_events_from_db", ("Out of memory"));
       ret= -1;

sql/event_priv.h

@@ -113,13 +113,11 @@ evex_queue_sort(EVEX_QUEUE_TYPE *queue);
 extern bool evex_is_running;
 extern bool mysql_event_table_exists;
 extern DYNAMIC_ARRAY events_array;
-extern DYNAMIC_ARRAY EXEC_QUEUE_DARR_NAME;
-extern QUEUE EXEC_QUEUE_QUEUE_NAME;
 extern MEM_ROOT evex_mem_root;
 extern pthread_mutex_t LOCK_event_arrays,
                        LOCK_workers_count,
                        LOCK_evex_running;
 extern ulonglong evex_main_thread_id;
-
+extern QUEUE EVEX_EQ_NAME;
 
 #endif /* _EVENT_PRIV_H_ */

sql/event_timed.cc

@@ -776,17 +776,7 @@ event_timed::get_show_create_event(THD *thd, uint *length)
   uint len, tmp_len;
 
   len = strlen("CREATE EVENT ") + dbname.length + strlen(".") + name.length +
-        strlen(" ON SCHEDULE ") + strlen("EVERY 5 MINUTE ")
-/*
-	+ strlen("ON COMPLETION ")
-	+ (on_completion==MYSQL_EVENT_ON_COMPLETION_DROP?
-		         strlen("NOT PRESERVE "):strlen("PRESERVE "))
-	+ (status==MYSQL_EVENT_ENABLED?
-		         strlen("ENABLE "):strlen("DISABLE "))
-	+ strlen("COMMENT \"") + comment.length + strlen("\" ")
-*/
-    + strlen("DO ") +
-	+ body.length + strlen(";");
+        strlen(" ON SCHEDULE EVERY 5 MINUTE DO ") + body.length + strlen(";");
   
   ret= dst= (char*) alloc_root(thd->mem_root, len + 1);
   memcpy(dst, "CREATE EVENT ", tmp_len= strlen("CREATE EVENT "));
@@ -797,31 +787,8 @@ event_timed::get_show_create_event(THD *thd, uint *length)
   dst+= tmp_len;
   memcpy(dst, name.str, tmp_len= name.length);
   dst+= tmp_len;
-  memcpy(dst, " ON SCHEDULE ", tmp_len= strlen(" ON SCHEDULE "));
-  dst+= tmp_len;
-  memcpy(dst, "EVERY 5 MINUTE ", tmp_len= strlen("EVERY 5 MINUTE "));
-  dst+= tmp_len;
-/*
-  memcpy(dst, "ON COMPLETION ", tmp_len =strlen("ON COMPLETION "));
-  dst+= tmp_len;
-  memcpy(dst, (on_completion==MYSQL_EVENT_ON_COMPLETION_DROP?
-		         "NOT PRESERVE ":"PRESERVE "),
-			 tmp_len =(on_completion==MYSQL_EVENT_ON_COMPLETION_DROP? 13:9));
-  dst+= tmp_len;
-
-  memcpy(dst, (status==MYSQL_EVENT_ENABLED?
-		         "ENABLE  ":"DISABLE  "),
-			 tmp_len= (status==MYSQL_EVENT_ENABLED? 8:9));
-  dst+=tmp_len;
-
-  memcpy(dst, "COMMENT \"", tmp_len= strlen("COMMENT \""));
-  dst+= tmp_len;
-  memcpy(dst, comment.str, tmp_len= comment.length);
-  dst+= tmp_len;
-  memcpy(dst, "\" ", tmp_len=2);
-  dst+= tmp_len;
-*/
-  memcpy(dst, "DO ", tmp_len=3);
+  memcpy(dst, " ON SCHEDULE EVERY 5 MINUTE DO ",
+         tmp_len= strlen(" ON SCHEDULE EVERY 5 MINUTE DO "));
   dst+= tmp_len;
 
   memcpy(dst, body.str, tmp_len= body.length);
@@ -832,6 +799,7 @@ event_timed::get_show_create_event(THD *thd, uint *length)
  
   *length= len;
   dst[len]= '\0'; 
+  sql_print_information("%d %d[%s]", len, dst-ret, ret);
   return ret;
 }