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BitKeeper/etc/logging_ok: auto-union BitKeeper/deleted/.del-Makefile.am: Delete: Docs/Images/Makefile.am configure.in: Auto merged innobase/include/row0mysql.h: Auto merged innobase/lock/lock0lock.c: Auto merged innobase/row/row0mysql.c: Auto merged mysql-test/r/ps.result: Auto merged mysql-test/t/ps.test: Auto merged sql/ha_innodb.cc: Auto merged sql/ha_innodb.h: Auto merged sql/item.cc: Auto merged sql/item.h: Auto merged sql/mysql_priv.h: Auto merged sql/sql_base.cc: Auto merged sql/sql_class.h: Auto merged sql/sql_parse.cc: Auto merged sql/sql_prepare.cc: Auto merged sql/table.cc: Auto merged
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@ -515,7 +515,8 @@ public:
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itself to the list on creation (see Item::Item() for details))
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*/
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Item *free_list;
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MEM_ROOT mem_root;
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MEM_ROOT main_mem_root;
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MEM_ROOT *mem_root; // Pointer to current memroot
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#ifndef DBUG_OFF
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bool backup_arena;
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#endif
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@ -557,24 +558,24 @@ public:
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{ return state == PREPARED || state == EXECUTED; }
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inline bool is_conventional() const
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{ return state == CONVENTIONAL_EXECUTION; }
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inline gptr alloc(unsigned int size) { return alloc_root(&mem_root,size); }
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inline gptr alloc(unsigned int size) { return alloc_root(mem_root,size); }
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inline gptr calloc(unsigned int size)
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{
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gptr ptr;
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if ((ptr=alloc_root(&mem_root,size)))
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if ((ptr=alloc_root(mem_root,size)))
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bzero((char*) ptr,size);
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return ptr;
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}
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inline char *strdup(const char *str)
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{ return strdup_root(&mem_root,str); }
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{ return strdup_root(mem_root,str); }
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inline char *strmake(const char *str, uint size)
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{ return strmake_root(&mem_root,str,size); }
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{ return strmake_root(mem_root,str,size); }
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inline char *memdup(const char *str, uint size)
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{ return memdup_root(&mem_root,str,size); }
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{ return memdup_root(mem_root,str,size); }
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inline char *memdup_w_gap(const char *str, uint size, uint gap)
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{
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gptr ptr;
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if ((ptr=alloc_root(&mem_root,size+gap)))
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if ((ptr=alloc_root(mem_root,size+gap)))
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memcpy(ptr,str,size);
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return ptr;
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}
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@ -1171,11 +1172,26 @@ public:
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inline CHARSET_INFO *charset() { return variables.character_set_client; }
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void update_charset();
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inline Item_arena *change_arena_if_needed(Item_arena *backup)
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{
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/*
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use new arena if we are in a prepared statements and we have not
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already changed to use this arena.
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*/
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if (!current_arena->is_conventional() &&
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mem_root != ¤t_arena->main_mem_root)
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{
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set_n_backup_item_arena(current_arena, backup);
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return current_arena;
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}
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return 0;
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}
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void change_item_tree(Item **place, Item *new_value)
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{
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/* TODO: check for OOM condition here */
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if (!current_arena->is_conventional())
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nocheck_register_item_tree_change(place, *place, &mem_root);
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nocheck_register_item_tree_change(place, *place, mem_root);
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*place= new_value;
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}
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void nocheck_register_item_tree_change(Item **place, Item *old_value,
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