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#include <iostream>
#include "probing_hash_utils.h"
#include "util/file.hh"
namespace probingpt
{
//Read table from disk, return memory map location
char * readTable(const char * filename, util::LoadMethod load_method, util::scoped_fd &file, util::scoped_memory &memory)
{
//std::cerr << "filename=" << filename << std::endl;
file.reset(util::OpenReadOrThrow(filename));
uint64_t total_size_ = util::SizeFile(file.get());
MapRead(load_method, file.get(), 0, total_size_, memory);
return (char*) memory.get();
}
void serialize_table(char *mem, size_t size, const std::string &filename)
{
std::ofstream os(filename.c_str(), std::ios::binary);
os.write((const char*) &mem[0], size);
os.close();
}
uint64_t getKey(const uint64_t source_phrase[], size_t size)
{
//TOO SLOW
//uint64_t key = util::MurmurHashNative(&source_phrase[0], source_phrase.size());
uint64_t key = 0;
for (size_t i = 0; i < size; i++) {
key += (source_phrase[i] << i);
}
return key;
}
}
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