HP_INFO *heap_open_from_share(HP_SHARE *share, int mode)
{
HP_INFO *info;
DBUG_ENTER("heap_open_from_share");
if (!(info= (HP_INFO*) my_malloc(sizeof(HP_INFO) +
2 * share->max_key_length,
MYF(MY_ZEROFILL +
(share->internal ?
MY_THREAD_SPECIFIC : 0)))))
{
DBUG_RETURN(0);
}
share->open_count++;
thr_lock_data_init(&share->lock,&info->lock,NULL);
info->s= share;
info->lastkey= (uchar*) (info + 1);
info->recbuf= (uchar*) (info->lastkey + share->max_key_length);
info->mode= mode;
info->current_record= (ulong) ~0L; /* No current record */
info->lastinx= info->errkey= -1;
#ifndef DBUG_OFF
info->opt_flag= READ_CHECK_USED; /* Check when changing */
#endif
DBUG_PRINT("exit",("heap: 0x%lx reclength: %d records_in_block: %lu",
(long) info, share->reclength,
share->block.records_in_block));
DBUG_RETURN(info);
}
HP_INFO *heap_open(const char *name, int mode)
{
HP_INFO *info;
HP_SHARE *share;
DBUG_ENTER("heap_open");
pthread_mutex_lock(&THR_LOCK_heap);
if (!(share= hp_find_named_heap(name)))
{
my_errno= ENOENT;
pthread_mutex_unlock(&THR_LOCK_heap);
DBUG_RETURN(0);
}
if (!(info= (HP_INFO*) my_malloc((uint) sizeof(HP_INFO) +
2 * share->max_key_length,
MYF(MY_ZEROFILL))))
{
pthread_mutex_unlock(&THR_LOCK_heap);
DBUG_RETURN(0);
}
share->open_count++;
#ifdef THREAD
thr_lock_data_init(&share->lock,&info->lock,NULL);
#endif
info->open_list.data= (void*) info;
heap_open_list= list_add(heap_open_list,&info->open_list);
pthread_mutex_unlock(&THR_LOCK_heap);
info->s= share;
info->lastkey= (byte*) (info + 1);
info->recbuf= (byte*) (info->lastkey + share->max_key_length);
info->mode= mode;
info->current_record= (ulong) ~0L; /* No current record */
info->current_ptr= 0;
info->current_hash_ptr= 0;
info->lastinx= info->errkey= -1;
info->update= 0;
#ifndef DBUG_OFF
info->opt_flag= READ_CHECK_USED; /* Check when changing */
#endif
DBUG_PRINT("exit",("heap: 0x%lx reclength: %d records_in_block: %d",
(long) info, share->reclength,
share->block.records_in_block));
DBUG_RETURN(info);
}
