mirror of
https://github.com/MariaDB/server.git
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08dd5dcf16
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()
111 lines
4.2 KiB
C
111 lines
4.2 KiB
C
/* Copyright (C) 2000-2002, 2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* This file is included in all heap-files */
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#include <my_base.h> /* This includes global */
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C_MODE_START
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#ifdef THREAD
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#include <my_pthread.h>
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#endif
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#include "heap.h" /* Structs & some defines */
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#include "my_tree.h"
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/*
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When allocating keys /rows in the internal block structure, do it
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within the following boundaries.
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The challenge is to find the balance between allocate as few blocks
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as possible and keep memory consumption down.
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*/
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#define HP_MIN_RECORDS_IN_BLOCK 16
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#define HP_MAX_RECORDS_IN_BLOCK 8192
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/* Some extern variables */
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extern LIST *heap_open_list,*heap_share_list;
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#define test_active(info) \
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if (!(info->update & HA_STATE_AKTIV))\
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{ my_errno=HA_ERR_NO_ACTIVE_RECORD; DBUG_RETURN(-1); }
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#define hp_find_hash(A,B) ((HASH_INFO*) hp_find_block((A),(B)))
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/* Find pos for record and update it in info->current_ptr */
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#define hp_find_record(info,pos) (info)->current_ptr= hp_find_block(&(info)->s->block,pos)
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typedef struct st_hp_hash_info
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{
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struct st_hp_hash_info *next_key;
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uchar *ptr_to_rec;
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} HASH_INFO;
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typedef struct {
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HA_KEYSEG *keyseg;
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uint key_length;
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uint search_flag;
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} heap_rb_param;
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/* Prototypes for intern functions */
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extern HP_SHARE *hp_find_named_heap(const char *name);
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extern int hp_rectest(HP_INFO *info,const uchar *old);
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extern uchar *hp_find_block(HP_BLOCK *info,ulong pos);
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extern int hp_get_new_block(HP_BLOCK *info, size_t* alloc_length);
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extern void hp_free(HP_SHARE *info);
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extern uchar *hp_free_level(HP_BLOCK *block,uint level,HP_PTRS *pos,
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uchar *last_pos);
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extern int hp_write_key(HP_INFO *info, HP_KEYDEF *keyinfo,
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const uchar *record, uchar *recpos);
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extern int hp_rb_write_key(HP_INFO *info, HP_KEYDEF *keyinfo,
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const uchar *record, uchar *recpos);
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extern int hp_rb_delete_key(HP_INFO *info,HP_KEYDEF *keyinfo,
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const uchar *record,uchar *recpos,int flag);
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extern int hp_delete_key(HP_INFO *info,HP_KEYDEF *keyinfo,
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const uchar *record,uchar *recpos,int flag);
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extern HASH_INFO *_heap_find_hash(HP_BLOCK *block,ulong pos);
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extern uchar *hp_search(HP_INFO *info,HP_KEYDEF *keyinfo,const uchar *key,
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uint nextflag);
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extern uchar *hp_search_next(HP_INFO *info, HP_KEYDEF *keyinfo,
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const uchar *key, HASH_INFO *pos);
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extern ulong hp_hashnr(HP_KEYDEF *keyinfo,const uchar *key);
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extern ulong hp_rec_hashnr(HP_KEYDEF *keyinfo,const uchar *rec);
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extern ulong hp_mask(ulong hashnr,ulong buffmax,ulong maxlength);
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extern void hp_movelink(HASH_INFO *pos,HASH_INFO *next_link,
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HASH_INFO *newlink);
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extern int hp_rec_key_cmp(HP_KEYDEF *keydef,const uchar *rec1,
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const uchar *rec2,
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my_bool diff_if_only_endspace_difference);
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extern int hp_key_cmp(HP_KEYDEF *keydef,const uchar *rec,
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const uchar *key);
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extern void hp_make_key(HP_KEYDEF *keydef,uchar *key,const uchar *rec);
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extern uint hp_rb_make_key(HP_KEYDEF *keydef, uchar *key,
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const uchar *rec, uchar *recpos);
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extern uint hp_rb_key_length(HP_KEYDEF *keydef, const uchar *key);
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extern uint hp_rb_null_key_length(HP_KEYDEF *keydef, const uchar *key);
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extern uint hp_rb_var_key_length(HP_KEYDEF *keydef, const uchar *key);
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extern my_bool hp_if_null_in_key(HP_KEYDEF *keyinfo, const uchar *record);
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extern int hp_close(register HP_INFO *info);
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extern void hp_clear(HP_SHARE *info);
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extern void hp_clear_keys(HP_SHARE *info);
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extern uint hp_rb_pack_key(HP_KEYDEF *keydef, uchar *key, const uchar *old,
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key_part_map keypart_map);
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#ifdef THREAD
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extern pthread_mutex_t THR_LOCK_heap;
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#else
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#define pthread_mutex_lock(A)
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#define pthread_mutex_unlock(A)
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#endif
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C_MODE_END
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