static void RunAll <TKey>(List <TKey> keys, string content)
{
var xxHash = XXHash32.Create();
xxHash.Initialize();
var murmur = new System.Data.HashFunction.MurmurHash3();
var city = new System.Data.HashFunction.CityHash();
// Default:
DrawHashes(keys, x => x.GetHashCode(), $"hash_{content}_default");
// xxHash:
DrawHashes(keys, x =>
{
var h = xxHash.ComputeHash(ToBytes((dynamic)x));
return(BitConverter.ToInt32(h, 0));
},
$"hash_{content}_xx");
// Murmur:
DrawHashes(keys, x =>
{
var h = murmur.ComputeHash(ToBytes((dynamic)x));
return(BitConverter.ToInt32(h, 0));
},
$"hash_{content}_murmur");
// City:
DrawHashes(keys, x =>
{
var h = city.ComputeHash(ToBytes((dynamic)x));
return(BitConverter.ToInt32(h, 0));
},
$"hash_{content}_city");
}
private static long CalculateHash(string filename, long offset)
{
var hasher = new System.Data.HashFunction.MurmurHash3(128);
var stream = FileHelper.GetStreamAtOffset(filename, offset);
var rawHash = hasher.ComputeHash(stream);
return(BitConverter.ToInt64(rawHash, 0) ^ BitConverter.ToInt64(rawHash, 8));
}