Z S newSymbol(const C *str,S prevsym)
{
int mw;
SBS cur,prev;
S res;
mw=((12+strlen(str))>>2)&~0x01;
for(cur=&SymBlockListHead,prev=cur;cur=cur->next;prev=cur)
{
if (cur->size-cur->idx>=mw) break;
}
if(!cur)
{
allocNewBlock(mw);
prev=&SymBlockListHead;
cur=prev->next;
}
res=(S)(cur->buf+cur->idx);
res->s=prevsym->s,prevsym->s=res,strcpy(res->n,str);
/* See if we need to move block to Full list. */
cur->idx += mw;
++cur->count;
if(cur->size-cur->idx<SBS_BLOCKTHRESHOLD)
{
prev->next=cur->next;
cur->next=FullSymBlockList;
FullSymBlockList=cur;
}
/* See if we need to grow hash table. */
if(SymHashTable->nb*SBS_TRIGGERRATIO<++SymHashTable->ni)growSymHashTable();
R res;
}
int dbfile::findEnoughSpace(int offset, int size)
{
unsigned int block_count = m_file.GetLength() / 4096;
int array[2];
if(offset == 0)
offset = 1;
for(int i = offset; i < block_count; i++)
{
m_file.Seek(i*4096,CFile::begin);
m_file.Read((void *)array,8);
if(array[1] + 1 - 2*4 - array[0]*8 >= size + 8)
return i;
}
return allocNewBlock();
}
