diff options
Diffstat (limited to 'heap/hp_delete.c')
-rw-r--r-- | heap/hp_delete.c | 58 |
1 files changed, 38 insertions, 20 deletions
diff --git a/heap/hp_delete.c b/heap/hp_delete.c index 3ac321d5fa2..4ba2f2c5310 100644 --- a/heap/hp_delete.c +++ b/heap/hp_delete.c @@ -20,25 +20,26 @@ int heap_delete(HP_INFO *info, const byte *record) { - uint key; byte *pos; HP_SHARE *share=info->s; + HP_KEYDEF *keydef, *end, *p_lastinx; DBUG_ENTER("heap_delete"); DBUG_PRINT("enter",("info: %lx record: %lx",info,record)); test_active(info); - if (info->opt_flag & READ_CHECK_USED && _hp_rectest(info,record)) + if (info->opt_flag & READ_CHECK_USED && hp_rectest(info,record)) DBUG_RETURN(my_errno); /* Record changed */ share->changed=1; if ( --(share->records) < share->blength >> 1) share->blength>>=1; pos=info->current_ptr; - for (key=0 ; key < share->keys ; key++) + p_lastinx = share->keydef + info->lastinx; + for (keydef = share->keydef, end = keydef + share->keys; keydef < end; + keydef++) { - if (_hp_delete_key(info,share->keydef+key,record,pos, - key == (uint) info->lastinx)) + if ((*keydef->delete_key)(info, keydef, record, pos, keydef == p_lastinx)) goto err; } @@ -49,22 +50,39 @@ int heap_delete(HP_INFO *info, const byte *record) share->deleted++; info->current_hash_ptr=0; DBUG_RETURN(0); - err: +err: if (++(share->records) == share->blength) share->blength+= share->blength; DBUG_RETURN(my_errno); } +/* +Remove one key from rb-tree +*/ +int hp_rb_delete_key(HP_INFO *info, register HP_KEYDEF *keyinfo, + const byte *record, byte *recpos, int flag) +{ + heap_rb_param custom_arg; + + if (flag) + info->last_pos= NULL; /* For heap_rnext/heap_rprev */ + + custom_arg.keyseg= keyinfo->seg; + custom_arg.key_length= hp_rb_make_key(keyinfo, info->recbuf, record, recpos); + custom_arg.search_flag= SEARCH_SAME; + return tree_delete(&keyinfo->rb_tree, info->recbuf, &custom_arg); +} + /* Remove one key from hash-table */ /* Flag is set if we want's to correct info->current_ptr */ -int _hp_delete_key(HP_INFO *info, register HP_KEYDEF *keyinfo, +int hp_delete_key(HP_INFO *info, register HP_KEYDEF *keyinfo, const byte *record, byte *recpos, int flag) { ulong blength,pos2,pos_hashnr,lastpos_hashnr; HASH_INFO *lastpos,*gpos,*pos,*pos3,*empty,*last_ptr; HP_SHARE *share=info->s; - DBUG_ENTER("_hp_delete_key"); + DBUG_ENTER("hp_delete_key"); blength=share->blength; if (share->records+1 == blength) @@ -74,13 +92,13 @@ int _hp_delete_key(HP_INFO *info, register HP_KEYDEF *keyinfo, /* Search after record with key */ pos= hp_find_hash(&keyinfo->block, - _hp_mask(_hp_rec_hashnr(keyinfo,record),blength, - share->records+1)); + hp_mask(hp_rec_hashnr(keyinfo, record), blength, + share->records + 1)); gpos = pos3 = 0; while (pos->ptr_to_rec != recpos) { - if (flag && !_hp_rec_key_cmp(keyinfo,record,pos->ptr_to_rec)) + if (flag && !hp_rec_key_cmp(keyinfo, record, pos->ptr_to_rec)) last_ptr=pos; /* Previous same key */ gpos=pos; if (!(pos=pos->next_key)) @@ -113,33 +131,33 @@ int _hp_delete_key(HP_INFO *info, register HP_KEYDEF *keyinfo, DBUG_RETURN (0); /* Move the last key (lastpos) */ - lastpos_hashnr=_hp_rec_hashnr(keyinfo,lastpos->ptr_to_rec); + lastpos_hashnr = hp_rec_hashnr(keyinfo, lastpos->ptr_to_rec); /* pos is where lastpos should be */ - pos=hp_find_hash(&keyinfo->block,_hp_mask(lastpos_hashnr,share->blength, + pos=hp_find_hash(&keyinfo->block, hp_mask(lastpos_hashnr, share->blength, share->records)); if (pos == empty) /* Move to empty position. */ { empty[0]=lastpos[0]; DBUG_RETURN(0); } - pos_hashnr=_hp_rec_hashnr(keyinfo,pos->ptr_to_rec); + pos_hashnr = hp_rec_hashnr(keyinfo, pos->ptr_to_rec); /* pos3 is where the pos should be */ pos3= hp_find_hash(&keyinfo->block, - _hp_mask(pos_hashnr,share->blength,share->records)); + hp_mask(pos_hashnr, share->blength, share->records)); if (pos != pos3) { /* pos is on wrong posit */ empty[0]=pos[0]; /* Save it here */ pos[0]=lastpos[0]; /* This shold be here */ - _hp_movelink(pos,pos3,empty); /* Fix link to pos */ + hp_movelink(pos, pos3, empty); /* Fix link to pos */ DBUG_RETURN(0); } - pos2= _hp_mask(lastpos_hashnr,blength,share->records+1); - if (pos2 == _hp_mask(pos_hashnr,blength,share->records+1)) + pos2= hp_mask(lastpos_hashnr, blength, share->records + 1); + if (pos2 == hp_mask(pos_hashnr, blength, share->records + 1)) { /* Identical key-positions */ if (pos2 != share->records) { empty[0]=lastpos[0]; - _hp_movelink(lastpos,pos,empty); + hp_movelink(lastpos, pos, empty); DBUG_RETURN(0); } pos3= pos; /* Link pos->next after lastpos */ @@ -147,7 +165,7 @@ int _hp_delete_key(HP_INFO *info, register HP_KEYDEF *keyinfo, else pos3= 0; /* Different positions merge */ empty[0]=lastpos[0]; - _hp_movelink(pos3,empty,pos->next_key); + hp_movelink(pos3, empty, pos->next_key); pos->next_key=empty; DBUG_RETURN(0); } |