Added support for 'internal temporary tables' in HEAP tables.

Now we don't take any mutexes when creating or dropping internal HEAP tables during SELECT.
Change buffer sizes to size_t to make keycache 64 bit safe on platforms where sizeof(ulong) != sizeof(size_t)


BitKeeper/etc/ignore:
  added support-files/mysqld_multi.server
include/heap.h:
  Added 'internal_table' to HP_CREATE_INFO
include/keycache.h:
  Change buffer sizes to size_t to make keycache 64 bit safe
include/my_base.h:
  Added HA_OPEN_INTERNAL_TABLE to mark temporary tables that should be deleted on close
mysys/mf_keycache.c:
  Change buffer sizes to size_t to make keycache 64 bit safe
sql/sql_select.cc:
  Added HA_OPEN_INTERNAL_TABLE to mark temporary tables that should be deleted on close
  Removed not anymore needed call to delete_table()
storage/heap/ha_heap.cc:
  Added support for internal temporary tables that should be deleted on close.
  Internal tables now use dedicated open and close calls to avoid taking mutexes.
  If heap_open() failes, now delete the newly created table. (This fixes a possible memory leak)
  Remove never executed info() in create()
storage/heap/ha_heap.h:
  Added slots needed to handle internal temporary tables
storage/heap/heapdef.h:
  Protect against C++ inclusion
storage/heap/hp_close.c:
  Don't call list_delete() for internal temporary tables (They are not in the list)
storage/heap/hp_create.c:
  Added HP_SHARE ** element to heap_create() to store the SHARE of the newly created table.
  For internal temporary tables: Don't take any mutex and don't put them into the open table list.
storage/heap/hp_open.c:
  Split heap_open() into sub functions to be able to create internal temporary tables without putting them in the heap_share_list.
  Add faster open() functions for when we already know the 'share'.
storage/heap/hp_test1.c:
  Update call to heap_create()
  Initialize all keyinfo members.
storage/heap/hp_test2.c:
  Update call to heap_create()

1 files changed, 3 insertions, 3 deletions

diff --git a/include/keycache.h b/include/keycache.h
index 7f4ce86cea0..a6005bae878 100644
--- a/include/keycache.h
+++ b/include/keycache.h
@@ -47,7 +47,7 @@ typedef struct st_key_cache
   my_bool in_resize;             /* true during resize operation             */
   my_bool resize_in_flush;       /* true during flush of resize operation    */
   my_bool can_be_used;           /* usage of cache for read/write is allowed */
-  ulong key_cache_mem_size;      /* specified size of the cache memory       */
+  size_t key_cache_mem_size;      /* specified size of the cache memory       */
   uint key_cache_block_size;     /* size of the page buffer of a cache block */
   ulong min_warm_blocks;         /* min number of warm blocks;               */
   ulong age_threshold;           /* age threshold for hot blocks             */
@@ -107,10 +107,10 @@ typedef struct st_key_cache
 extern KEY_CACHE dflt_key_cache_var, *dflt_key_cache;
 
 extern int init_key_cache(KEY_CACHE *keycache, uint key_cache_block_size,
-			  ulong use_mem, uint division_limit,
+			  size_t use_mem, uint division_limit,
 			  uint age_threshold);
 extern int resize_key_cache(KEY_CACHE *keycache, uint key_cache_block_size,
-			    ulong use_mem, uint division_limit,
+			    size_t use_mem, uint division_limit,
 			    uint age_threshold);
 extern void change_key_cache_param(KEY_CACHE *keycache, uint division_limit,
 				   uint age_threshold);