private static Dictionary <string, double> RunTest(IDawgFactory factory)
{
IEnumerable <KeyValuePair <string, ushort> > pairs = GetWordNumberPairs();
var metrics = new Dictionary <string, double> ();
IDawgBuilder dawgBuilder = null;
var buildTime = Time(() =>
{
dawgBuilder = factory.CreateBuilder(pairs);
});
metrics.Add("Build Time, ms", buildTime);
MemoryStream stream = null;
var saveTime = Time(() =>
{
stream = new MemoryStream();
dawgBuilder.Save(new NonDisposableStream(stream));
});
metrics.Add("Save Time, ms", saveTime);
metrics.Add("File Size, bytes", stream.Position);
stream.Position = 0;
IDawg dawg = null;
var before = GC.GetTotalMemory(true);
var loadTime = Time(() =>
{
dawg = factory.Load(stream);
});
var after = GC.GetTotalMemory(true);
metrics.Add("Load Time, ms", loadTime);
metrics.Add("RAM, bytes", after - before);
const int nLookups = 1000000;
var lookupTime = Time(() =>
{
foreach (string word in RandomWords().Take(nLookups))
{
if (dawg [word] == 0)
{
throw new Exception("dawg [" + word + "] == 0");
}
}
});
metrics.Add("Lookups Per Sec", nLookups * 1000.0 / lookupTime);
var matchPrefixTime = Time(() =>
{
#pragma warning disable 219
int x = 0;
#pragma warning restore 219
foreach (var keyValuePair in RandomWords().SelectMany(w => dawg.MatchPrefix(w.Take(w.Length / 2))).Take(nLookups))
{
x += keyValuePair.Value;
}
});
metrics.Add("Prefix Matches Per Sec", nLookups * 1000.0 / matchPrefixTime);
return(metrics);
}
public IEnumerable <KeyValuePair <string, TPayload> > MatchPrefix(IEnumerable <char> prefix)
{
return(dawg.MatchPrefix(prefix));
}