bloom_filter(size_t m, unsigned long k, const HashPair& fns = HashPair()) :
mem_block_t(super::nb_bytes__(m)),
super(m, k, (unsigned char*)mem_block_t::get_ptr(), fns)
{
if(!mem_block_t::get_ptr())
throw std::runtime_error(err::msg() << "Failed to allocate " << super::nb_bytes__(m) << " bytes of memory for bloom_filter");
}
bloom_filter(double fp, size_t n, const HashPair& fns = HashPair()) :
mem_block_t(super::nb_bytes__(super::opt_m(fp, n))),
super(super::opt_m(fp, n), super::opt_k(fp), (unsigned char*)mem_block_t::get_ptr(), fns)
{
if(!mem_block_t::get_ptr())
throw std::runtime_error(err::msg() << "Failed to allocate " << super::nb_bytes__(super::opt_m(fp, n))
<< " bytes of memory for bloom_filter");
}
bloom_filter(size_t m, unsigned long k, std::istream& is, const HashPair& fns = HashPair()) :
mem_block_t(super::nb_bytes__(m)),
super(m, k, (unsigned char*)mem_block_t::get_ptr(), fns)
{
if(!mem_block_t::get_ptr())
eraise(std::runtime_error) << "Failed to allocate " << super::nb_bytes__(m) << " bytes of memory for bloom_filter";
is.read((char*)mem_block_t::get_ptr(), mem_block_t::get_size());
}
bloom_filter_base(size_t m, unsigned long k, unsigned char* ptr, const HashPair& fns = HashPair()) :
super(m, k, ptr, fns)
{ }
bloom_filter_file(size_t m, unsigned long k, const char* path, const HashPair& fns = HashPair(), off_t offset = 0) :
mapped_file(path),
super(m, k, (unsigned char*)mapped_file::base() + offset, fns)
{ }
bloom_base(size_t m, unsigned long k, unsigned char* ptr, const HashPair& fns = HashPair()) :
d_(m), k_(k), data_(ptr), hash_fns_(fns)
{ }
void StaticHashTableBuilder::add (const std::string & key, const std::string & value) {
sf::HashValue h = sf::hash ((unsigned char*) key.c_str());
mHashes.push_back (HashPair (KeyValue (key, value), h));
}
