This removes the passing of global hton to engine instance.

sql/ha_ndbcluster.cc:
  Removed global hton
sql/ha_ndbcluster.h:
  Removed global hton need
sql/ha_partition.cc:
  Removed global hton
sql/ha_partition.h:
  Removed global hton
sql/handler.cc:
  Removed global hton
sql/handler.h:
  Removed global hton
storage/archive/ha_archive.cc:
  Removed global hton
storage/archive/ha_archive.h:
  Global hton removed
storage/blackhole/ha_blackhole.cc:
  Global removed hton
storage/blackhole/ha_blackhole.h:
  Global hton removal
storage/csv/ha_tina.cc:
  Global hton removal
storage/csv/ha_tina.h:
  Removed global removed
storage/example/ha_example.cc:
  Global removed hton
storage/example/ha_example.h:
  Global removed hton
storage/federated/ha_federated.cc:
  Global removed hton
storage/federated/ha_federated.h:
  Global removed hton
storage/heap/ha_heap.cc:
  Global removed hton
storage/heap/ha_heap.h:
  Global removed hton
storage/innobase/handler/ha_innodb.cc:
  Global removed hton
storage/innobase/handler/ha_innodb.h:
  Removed global hton
storage/myisam/ha_myisam.cc:
  Globally removed hton
storage/myisam/ha_myisam.h:
  Globally removed hton
storage/myisammrg/ha_myisammrg.cc:
  Globally removed hton
storage/myisammrg/ha_myisammrg.h:
  Globaly removed hton

sql/ha_ndbcluster.cc

@@ -82,10 +82,11 @@ static int ndbcluster_fill_files_table(THD *thd, TABLE_LIST *tables, COND *cond)
 
 handlerton *ndbcluster_hton;
 
-static handler *ndbcluster_create_handler(TABLE_SHARE *table,
+static handler *ndbcluster_create_handler(handlerton *hton,
+                                          TABLE_SHARE *table,
                                           MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_ndbcluster(table);
+  return new (mem_root) ha_ndbcluster(hton, table);
 }
 
 static uint ndbcluster_partition_flags()
@@ -5552,8 +5553,8 @@ void ha_ndbcluster::get_auto_increment(ulonglong offset, ulonglong increment,
                 HA_HAS_OWN_BINLOGGING | \
                 HA_HAS_RECORDS
 
-ha_ndbcluster::ha_ndbcluster(TABLE_SHARE *table_arg):
-  handler(ndbcluster_hton, table_arg),
+ha_ndbcluster::ha_ndbcluster(handlerton *hton, TABLE_SHARE *table_arg):
+  handler(hton, table_arg),
   m_active_trans(NULL),
   m_active_cursor(NULL),
   m_table(NULL),
@@ -6623,7 +6624,7 @@ void ndbcluster_print_error(int error, const NdbOperation *error_op)
   share.db.length= 0;
   share.table_name.str= (char *) tab_name;
   share.table_name.length= strlen(tab_name);
-  ha_ndbcluster error_handler(&share);
+  ha_ndbcluster error_handler(ndbcluster_hton, &share);
   error_handler.print_error(error, MYF(0));
   DBUG_VOID_RETURN;
 }

sql/ha_ndbcluster.h

@@ -627,7 +627,7 @@ class Thd_ndb
 class ha_ndbcluster: public handler
 {
  public:
-  ha_ndbcluster(TABLE_SHARE *table);
+  ha_ndbcluster(handlerton *hton, TABLE_SHARE *table);
   ~ha_ndbcluster();
 
   int ha_initialise();

sql/ha_partition.cc

@@ -69,7 +69,8 @@ static PARTITION_SHARE *get_share(const char *table_name, TABLE * table);
                 MODULE create/delete handler object
 ****************************************************************************/
 
-static handler *partition_create_handler(TABLE_SHARE *share,
+static handler *partition_create_handler(handlerton *hton,
+                                         TABLE_SHARE *share,
                                          MEM_ROOT *mem_root);
 static uint partition_flags();
 static uint alter_table_flags(uint flags);
@@ -102,10 +103,11 @@ static int partition_initialize(void *p)
     New partition object
 */
 
-static handler *partition_create_handler(TABLE_SHARE *share,
+static handler *partition_create_handler(handlerton *hton, 
+                                         TABLE_SHARE *share,
                                          MEM_ROOT *mem_root)
 {
-  ha_partition *file= new (mem_root) ha_partition(share);
+  ha_partition *file= new (mem_root) ha_partition(hton, share);
   if (file && file->initialise_partition(mem_root))
   {
     delete file;
@@ -155,8 +157,8 @@ static uint alter_table_flags(uint flags __attribute__((unused)))
     NONE
 */
 
-ha_partition::ha_partition(TABLE_SHARE *share)
-  :handler(partition_hton, share), m_part_info(NULL), m_create_handler(FALSE),
+ha_partition::ha_partition(handlerton *hton, TABLE_SHARE *share)
+  :handler(hton, share), m_part_info(NULL), m_create_handler(FALSE),
    m_is_sub_partitioned(0)
 {
   DBUG_ENTER("ha_partition::ha_partition(table)");
@@ -176,8 +178,8 @@ ha_partition::ha_partition(TABLE_SHARE *share)
     NONE
 */
 
-ha_partition::ha_partition(partition_info *part_info)
-  :handler(partition_hton, NULL), m_part_info(part_info),
+ha_partition::ha_partition(handlerton *hton, partition_info *part_info)
+  :handler(hton, NULL), m_part_info(part_info),
    m_create_handler(TRUE),
    m_is_sub_partitioned(m_part_info->is_sub_partitioned())
 

sql/ha_partition.h

@@ -149,8 +149,8 @@ public:
     partition handler.
     -------------------------------------------------------------------------
   */
-    ha_partition(TABLE_SHARE * table);
-    ha_partition(partition_info * part_info);
+    ha_partition(handlerton *hton, TABLE_SHARE * table);
+    ha_partition(handlerton *hton, partition_info * part_info);
    ~ha_partition();
   /*
     A partition handler has no characteristics in itself. It only inherits

sql/handler.cc

@@ -170,7 +170,7 @@ const char *ha_get_storage_engine(enum legacy_db_type db_type)
 static handler *create_default(TABLE_SHARE *table, MEM_ROOT *mem_root)
 {
   handlerton *hton= ha_default_handlerton(current_thd);
-  return (hton && hton->create) ? hton->create(table, mem_root) : NULL;
+  return (hton && hton->create) ? hton->create(hton, table, mem_root) : NULL;
 }
 
 
@@ -232,7 +232,7 @@ handler *get_new_handler(TABLE_SHARE *share, MEM_ROOT *alloc,
 
   if (db_type && db_type->state == SHOW_OPTION_YES && db_type->create)
   {
-    if ((file= db_type->create(share, alloc)))
+    if ((file= db_type->create(db_type, share, alloc)))
       file->init();
     DBUG_RETURN(file);
   }
@@ -251,7 +251,7 @@ handler *get_ha_partition(partition_info *part_info)
 {
   ha_partition *partition;
   DBUG_ENTER("get_ha_partition");
-  if ((partition= new ha_partition(part_info)))
+  if ((partition= new ha_partition(partition_hton, part_info)))
   {
     if (partition->initialise_partition(current_thd->mem_root))
     {
@@ -3296,7 +3296,7 @@ static my_bool exts_handlerton(THD *unused, st_plugin_int *plugin,
   handlerton *hton= (handlerton *)plugin->data;
   handler *file;
   if (hton->state == SHOW_OPTION_YES && hton->create &&
-      (file= hton->create((TABLE_SHARE*) 0, current_thd->mem_root)))
+      (file= hton->create(hton, (TABLE_SHARE*) 0, current_thd->mem_root)))
   {
     List_iterator_fast<char> it(*found_exts);
     const char **ext, *old_ext;

sql/handler.h

@@ -633,7 +633,7 @@ struct handlerton
    void *(*create_cursor_read_view)();
    void (*set_cursor_read_view)(void *);
    void (*close_cursor_read_view)(void *);
-   handler *(*create)(TABLE_SHARE *table, MEM_ROOT *mem_root);
+   handler *(*create)(handlerton *hton, TABLE_SHARE *table, MEM_ROOT *mem_root);
    void (*drop_database)(char* path);
    int (*panic)(enum ha_panic_function flag);
    int (*start_consistent_snapshot)(THD *thd);

storage/archive/ha_archive.cc

@@ -139,7 +139,9 @@ static HASH archive_open_tables;
 #define ARCHIVE_CHECK_HEADER 254 // The number we use to determine corruption
 
 /* Static declarations for handerton */
-static handler *archive_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root);
+static handler *archive_create_handler(handlerton *hton, 
+                                       TABLE_SHARE *table, 
+                                       MEM_ROOT *mem_root);
 /*
   Number of rows that will force a bulk insert.
 */
@@ -147,9 +149,11 @@ static handler *archive_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root);
 
 handlerton *archive_hton;
 
-static handler *archive_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
+static handler *archive_create_handler(handlerton *hton,
+                                       TABLE_SHARE *table, 
+                                       MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_archive(table);
+  return new (mem_root) ha_archive(hton, table);
 }
 
 /*
@@ -231,8 +235,8 @@ int archive_db_end(ha_panic_function type)
   return archive_db_done(NULL);
 }
 
-ha_archive::ha_archive(TABLE_SHARE *table_arg)
-  :handler(archive_hton, table_arg), delayed_insert(0), bulk_insert(0)
+ha_archive::ha_archive(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg), delayed_insert(0), bulk_insert(0)
 {
   /* Set our original buffer from pre-allocated memory */
   buffer.set((char *)byte_buffer, IO_SIZE, system_charset_info);

storage/archive/ha_archive.h

@@ -67,7 +67,7 @@ class ha_archive: public handler
   uint current_k_offset;
 
 public:
-  ha_archive(TABLE_SHARE *table_arg);
+  ha_archive(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_archive()
   {
   }

storage/blackhole/ha_blackhole.cc

@@ -25,10 +25,11 @@
 /* Static declarations for handlerton */
 
 handlerton *blackhole_hton;
-static handler *blackhole_create_handler(TABLE_SHARE *table,
+static handler *blackhole_create_handler(handlerton *hton,
+                                         TABLE_SHARE *table,
                                          MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_blackhole(table);
+  return new (mem_root) ha_blackhole(hton, table);
 }
 
 
@@ -36,8 +37,9 @@ static handler *blackhole_create_handler(TABLE_SHARE *table,
 ** BLACKHOLE tables
 *****************************************************************************/
 
-ha_blackhole::ha_blackhole(TABLE_SHARE *table_arg)
-  :handler(blackhole_hton, table_arg)
+ha_blackhole::ha_blackhole(handlerton *hton,
+                           TABLE_SHARE *table_arg)
+  :handler(hton, table_arg)
 {}
 
 

storage/blackhole/ha_blackhole.h

@@ -28,7 +28,7 @@ class ha_blackhole: public handler
   THR_LOCK thr_lock;
 
 public:
-  ha_blackhole(TABLE_SHARE *table_arg);
+  ha_blackhole(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_blackhole()
   {
   }

storage/csv/ha_tina.cc

@@ -74,7 +74,9 @@ static int write_meta_file(File meta_file, ha_rows rows, bool dirty);
 pthread_mutex_t tina_mutex;
 static HASH tina_open_tables;
 static int tina_init= 0;
-static handler *tina_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root);
+static handler *tina_create_handler(handlerton *hton,
+                                    TABLE_SHARE *table, 
+                                    MEM_ROOT *mem_root);
 
 off_t Transparent_file::read_next()
 {
@@ -493,14 +495,16 @@ off_t find_eoln_buff(Transparent_file *data_buff, off_t begin,
 }
 
 
-static handler *tina_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
+static handler *tina_create_handler(handlerton *hton,
+                                    TABLE_SHARE *table, 
+                                    MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_tina(table);
+  return new (mem_root) ha_tina(hton, table);
 }
 
 
-ha_tina::ha_tina(TABLE_SHARE *table_arg)
-  :handler(tina_hton, table_arg),
+ha_tina::ha_tina(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg),
   /*
     These definitions are found in handler.h
     They are not probably completely right.

storage/csv/ha_tina.h

@@ -129,7 +129,7 @@ private:
   int init_tina_writer();
 
 public:
-  ha_tina(TABLE_SHARE *table_arg);
+  ha_tina(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_tina()
   {
     if (chain_alloced)

storage/example/ha_example.cc

@@ -73,7 +73,9 @@
 
 #include <mysql/plugin.h>
 
-static handler *example_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root);
+static handler *example_create_handler(handlerton *hton,
+                                       TABLE_SHARE *table, 
+                                       MEM_ROOT *mem_root);
 static int example_init_func();
 static bool example_init_func_for_handlerton();
 static int example_panic(enum ha_panic_function flag);
@@ -201,14 +203,16 @@ static int free_share(EXAMPLE_SHARE *share)
 }
 
 
-static handler* example_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
+static handler* example_create_handler(handlerton *hton,
+                                       TABLE_SHARE *table, 
+                                       MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_example(table);
+  return new (mem_root) ha_example(hton, table);
 }
 
 
-ha_example::ha_example(TABLE_SHARE *table_arg)
-  :handler(example_hton, table_arg)
+ha_example::ha_example(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg)
 {}
 
 /*

storage/example/ha_example.h

@@ -45,7 +45,7 @@ class ha_example: public handler
   EXAMPLE_SHARE *share;    /* Shared lock info */
 
 public:
-  ha_example(TABLE_SHARE *table_arg);
+  ha_example(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_example()
   {
   }

storage/federated/ha_federated.cc

@@ -359,7 +359,8 @@ static const uint sizeof_trailing_and= sizeof(" AND ") - 1;
 static const uint sizeof_trailing_where= sizeof(" WHERE ") - 1;
 
 /* Static declaration for handerton */
-static handler *federated_create_handler(TABLE_SHARE *table,
+static handler *federated_create_handler(handlerton *hton,
+                                         TABLE_SHARE *table,
                                          MEM_ROOT *mem_root);
 static int federated_commit(THD *thd, bool all);
 static int federated_rollback(THD *thd, bool all);
@@ -368,10 +369,11 @@ static int federated_rollback(THD *thd, bool all);
 
 handlerton *federated_hton;
 
-static handler *federated_create_handler(TABLE_SHARE *table,
+static handler *federated_create_handler(handlerton *hton, 
+                                         TABLE_SHARE *table,
                                          MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_federated(table);
+  return new (mem_root) ha_federated(hton, table);
 }
 
 
@@ -723,8 +725,9 @@ error:
 ** FEDERATED tables
 *****************************************************************************/
 
-ha_federated::ha_federated(TABLE_SHARE *table_arg)
-  :handler(federated_hton, table_arg),
+ha_federated::ha_federated(handlerton *hton,
+                           TABLE_SHARE *table_arg)
+  :handler(hton, table_arg),
   mysql(0), stored_result(0)
 {
   trx_next= 0;

storage/federated/ha_federated.h

@@ -94,7 +94,7 @@ private:
   int stash_remote_error();
 
 public:
-  ha_federated(TABLE_SHARE *table_arg);
+  ha_federated(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_federated() {}
   /* The name that will be used for display purposes */
   const char *table_type() const { return "FEDERATED"; }

storage/heap/ha_heap.cc

@@ -25,7 +25,9 @@
 #include "ha_heap.h"
 
 
-static handler *heap_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root);
+static handler *heap_create_handler(handlerton *hton,
+                                    TABLE_SHARE *table, 
+                                    MEM_ROOT *mem_root);
 
 handlerton *heap_hton;
 
@@ -41,9 +43,11 @@ int heap_init(void *p)
   return 0;
 }
 
-static handler *heap_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
+static handler *heap_create_handler(handlerton *hton,
+                                    TABLE_SHARE *table, 
+                                    MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_heap(table);
+  return new (mem_root) ha_heap(hton, table);
 }
 
 
@@ -51,8 +55,8 @@ static handler *heap_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
 ** HEAP tables
 *****************************************************************************/
 
-ha_heap::ha_heap(TABLE_SHARE *table_arg)
-  :handler(heap_hton, table_arg), file(0), records_changed(0),
+ha_heap::ha_heap(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg), file(0), records_changed(0),
   key_stat_version(0)
 {}
 

storage/heap/ha_heap.h

@@ -31,7 +31,7 @@ class ha_heap: public handler
   uint    records_changed;
   uint    key_stat_version;
 public:
-  ha_heap(TABLE_SHARE *table);
+  ha_heap(handlerton *hton, TABLE_SHARE *table);
   ~ha_heap() {}
   const char *table_type() const
   {

storage/innobase/handler/ha_innodb.cc

@@ -203,16 +203,19 @@ static int innobase_rollback(THD* thd, bool all);
 static int innobase_rollback_to_savepoint(THD* thd, void *savepoint);
 static int innobase_savepoint(THD* thd, void *savepoint);
 static int innobase_release_savepoint(THD* thd, void *savepoint);
-static handler *innobase_create_handler(TABLE_SHARE *table,
+static handler *innobase_create_handler(handlerton *hton,
+                                        TABLE_SHARE *table,
                                         MEM_ROOT *mem_root);
 
 static const char innobase_hton_name[]= "InnoDB";
 
 handlerton *innobase_hton;
 
-static handler *innobase_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
+static handler *innobase_create_handler(handlerton *hton,
+                                        TABLE_SHARE *table, 
+                                        MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_innobase(table);
+  return new (mem_root) ha_innobase(hton, table);
 }
 
 
@@ -889,7 +892,7 @@ check_trx_exists(
 /*************************************************************************
 Construct ha_innobase handler. */
 
-ha_innobase::ha_innobase(TABLE_SHARE *table_arg)
+ha_innobase::ha_innobase(handlerton *hton, TABLE_SHARE *table_arg)
   :handler(innobase_hton, table_arg),
   int_table_flags(HA_REC_NOT_IN_SEQ |
 		  HA_NULL_IN_KEY |

storage/innobase/handler/ha_innodb.h

@@ -80,7 +80,7 @@ class ha_innobase: public handler
 
 	/* Init values for the class: */
  public:
-	ha_innobase(TABLE_SHARE *table_arg);
+	ha_innobase(handlerton *hton, TABLE_SHARE *table_arg);
 	~ha_innobase() {}
 	/*
 	  Get the row type from the storage engine.  If this method returns

storage/myisam/ha_myisam.cc

@@ -48,9 +48,11 @@ TYPELIB myisam_stats_method_typelib= {
 ** MyISAM tables
 *****************************************************************************/
 
-static handler *myisam_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
+static handler *myisam_create_handler(handlerton *hton,
+                                      TABLE_SHARE *table, 
+                                      MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_myisam(table);
+  return new (mem_root) ha_myisam(hton, table);
 }
 
 // collect errors printed by mi_check routines
@@ -133,8 +135,8 @@ void mi_check_print_warning(MI_CHECK *param, const char *fmt,...)
 }
 
 
-ha_myisam::ha_myisam(TABLE_SHARE *table_arg)
-  :handler(myisam_hton, table_arg), file(0),
+ha_myisam::ha_myisam(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg), file(0),
   int_table_flags(HA_NULL_IN_KEY | HA_CAN_FULLTEXT | HA_CAN_SQL_HANDLER |
                   HA_DUPLICATE_POS | HA_CAN_INDEX_BLOBS | HA_AUTO_PART_KEY |
                   HA_FILE_BASED | HA_CAN_GEOMETRY | HA_NO_TRANSACTIONS |
@@ -1792,11 +1794,11 @@ handlerton *myisam_hton;
 static int myisam_init(void *p)
 {
   myisam_hton= (handlerton *)p;
-  myisam_hton->state=SHOW_OPTION_YES;
-  myisam_hton->db_type=DB_TYPE_MYISAM;
-  myisam_hton->create=myisam_create_handler;
-  myisam_hton->panic=mi_panic;
-  myisam_hton->flags=HTON_CAN_RECREATE;
+  myisam_hton->state= SHOW_OPTION_YES;
+  myisam_hton->db_type= DB_TYPE_MYISAM;
+  myisam_hton->create= myisam_create_handler;
+  myisam_hton->panic= mi_panic;
+  myisam_hton->flags= HTON_CAN_RECREATE;
   return 0;
 }
 

storage/myisam/ha_myisam.h

@@ -43,7 +43,7 @@ class ha_myisam: public handler
   int repair(THD *thd, MI_CHECK &param, bool optimize);
 
  public:
-  ha_myisam(TABLE_SHARE *table_arg);
+  ha_myisam(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_myisam() {}
   handler *clone(MEM_ROOT *mem_root);
   const char *table_type() const { return "MyISAM"; }

storage/myisammrg/ha_myisammrg.cc

@@ -38,15 +38,16 @@ static handler *myisammrg_create_handler(TABLE_SHARE *table,
 
 handlerton *myisammrg_hton;
 
-static handler *myisammrg_create_handler(TABLE_SHARE *table,
+static handler *myisammrg_create_handler(handlerton *hton,
+                                         TABLE_SHARE *table,
                                          MEM_ROOT *mem_root)
 {
-  return new (mem_root) ha_myisammrg(table);
+  return new (mem_root) ha_myisammrg(hton, table);
 }
 
 
-ha_myisammrg::ha_myisammrg(TABLE_SHARE *table_arg)
-  :handler(myisammrg_hton, table_arg), file(0)
+ha_myisammrg::ha_myisammrg(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg), file(0)
 {}
 
 static const char *ha_myisammrg_exts[] = {

storage/myisammrg/ha_myisammrg.h

@@ -28,7 +28,7 @@ class ha_myisammrg: public handler
   MYRG_INFO *file;
 
  public:
-  ha_myisammrg(TABLE_SHARE *table_arg);
+  ha_myisammrg(handlerton *hton, TABLE_SHARE *table_arg);
   ~ha_myisammrg() {}
   const char *table_type() const { return "MRG_MyISAM"; }
   const char **bas_ext() const;