unsigned HashTable::hash(const void *key, int ksize) const
{
unsigned h = 0x811C9DC5;
unsigned char *bp = (unsigned char *) key;
if (ksize<=0)
{
if (ksize==PSTRINGDATA) {
ksize = (*(unsigned char*)key)+1;
goto BlockHash;
}
if (ksize<0) {
h = hashc(bp,-ksize,h);
bp -= ksize;
}
unsigned char* ks = bp;
while (*bp) bp++;
if (ignorecase)
h = hashnc(ks,(size32_t)(bp-ks),h);
else
h = hashc(ks,(size32_t)(bp-ks),h);
}
else
{
BlockHash:
if (ignorecase)
h = hashnc(bp,ksize,h);
else
h = hashc(bp,ksize,h);
}
//Strings that only differ by a single character don't generate hashes very far apart without this
h *= 0x01000193;
//h = ((h << 7) ^ (h >> 25));
return h;
}
inline unsigned getHashFromFindParam(const void *fp) const
{
return hashnc((const unsigned char *)fp, strlen((const char *)fp), 0);
}
CThorNodeGroup(const char* _groupName, unsigned _nodeCount, bool _replicateOutputs)
: groupName(_groupName), nodeCount(_nodeCount), replicateOutputs(_replicateOutputs)
{
keyhash = hashnc((const byte *)groupName.get(),groupName.length(),0);
timeCached = msTick();
}
