internal static int SetupStatePos = 0; // *SetupState = StateRingBuf;
/// Wait for a command from the user, parse this text string as an UCI command,
/// and call the appropriate functions. Also intercepts EOF from stdin to ensure
/// that we exit gracefully if the GUI dies unexpectedly. In addition to the UCI
/// commands, the function also supports a few debug commands.
internal static void uci_loop(string args)
{
for (int i = 0; i < 102; i++)
{
StateRingBuf[i] = new StateInfo();
}
Position pos = new Position(StartFEN, false, Threads.main_thread()); // The root position
string cmd, token = string.Empty;
while (token != "quit")
{
if (args.Length > 0)
{
cmd = args;
}
else if (String.IsNullOrEmpty(cmd = Plug.ReadLine())) // Block here waiting for input
{
cmd = "quit";
}
Stack <string> stack = Utils.CreateStack(cmd);
token = stack.Pop();
if (token == "quit" || token == "stop")
{
Search.SignalsStop = true;
Threads.wait_for_search_finished(); // Cannot quit while threads are running
}
else if (token == "ponderhit")
{
// The opponent has played the expected move. GUI sends "ponderhit" if
// we were told to ponder on the same move the opponent has played. We
// should continue searching but switching from pondering to normal search.
Search.Limits.ponder = false;
if (Search.SignalsStopOnPonderhit)
{
Search.SignalsStop = true;
Threads.main_thread().wake_up(); // Could be sleeping
}
}
else if (token == "go")
{
go(pos, stack);
}
else if (token == "ucinewgame")
{ /* Avoid returning "Unknown command" */
}
else if (token == "isready")
{
Plug.Write("readyok");
Plug.Write(Constants.endl);
}
else if (token == "position")
{
set_position(pos, stack);
}
else if (token == "setoption")
{
set_option(stack);
}
else if (token == "d")
{
pos.print(0);
}
else if (token == "flip")
{
pos.flip();
}
else if (token == "eval")
{
Plug.Write(Evaluate.trace(pos));
Plug.Write(Constants.endl);
}
else if (token == "bench")
{
Benchmark.benchmark(pos, stack);
}
else if (token == "key")
{
Plug.Write("key: ");
Plug.Write(String.Format("{0:X}", pos.key()));
Plug.Write("\nmaterial key: ");
Plug.Write(pos.material_key().ToString());
Plug.Write("\npawn key: ");
Plug.Write(pos.pawn_key().ToString());
Plug.Write(Constants.endl);
}
else if (token == "uci")
{
Plug.Write("id name "); Plug.Write(Utils.engine_info(true));
Plug.Write("\n"); Plug.Write(OptionMap.Instance.ToString());
Plug.Write("\nuciok"); Plug.Write(Constants.endl);
}
else if (token == "perft")
{
token = stack.Pop(); // Read depth
Stack <string> ss = Utils.CreateStack(
string.Format("{0} {1} {2} current perft", OptionMap.Instance["Hash"].v, OptionMap.Instance["Threads"].v, token)
);
Benchmark.benchmark(pos, ss);
}
else
{
Plug.Write("Unknown command: ");
Plug.Write(cmd);
Plug.Write(Constants.endl);
}
if (args.Length > 0) // Command line arguments have one-shot behaviour
{
Threads.wait_for_search_finished();
break;
}
}
}
/// benchmark() runs a simple benchmark by letting Stockfish analyze a set
/// of positions for a given limit each. There are five parameters; the
/// transposition table size, the number of search threads that should
/// be used, the limit value spent for each position (optional, default is
/// depth 12), an optional file name where to look for positions in fen
/// format (defaults are the positions defined above) and the type of the
/// limit value: depth (default), time in secs or number of nodes.
internal static void benchmark(Position current, Stack <string> stack)
{
List <string> fens = new List <string>();
LimitsType limits = new LimitsType();
Int64 nodes = 0;
Int64 nodesAll = 0;
long e = 0;
long eAll = 0;
// Assign default values to missing arguments
string ttSize = (stack.Count > 0) ? (stack.Pop()) : "128";
string threads = (stack.Count > 0) ? (stack.Pop()) : "1";
string limit = (stack.Count > 0) ? (stack.Pop()) : "12";
string fenFile = (stack.Count > 0) ? (stack.Pop()) : "default";
string limitType = (stack.Count > 0) ? (stack.Pop()) : "depth";
OptionMap.Instance["Hash"].v = ttSize;
OptionMap.Instance["Threads"].v = threads;
TT.clear();
if (limitType == "time")
{
limits.movetime = 1000 * int.Parse(limit); // maxTime is in ms
}
else if (limitType == "nodes")
{
limits.nodes = int.Parse(limit);
}
else
{
limits.depth = int.Parse(limit);
}
if (fenFile == "default")
{
fens.AddRange(Defaults);
}
else if (fenFile == "current")
{
fens.Add(current.to_fen());
}
else
{
#if PORTABLE
throw new Exception("File cannot be read.");
#else
System.IO.StreamReader sr = new System.IO.StreamReader(fenFile, true);
string fensFromFile = sr.ReadToEnd();
sr.Close();
sr.Dispose();
string[] split = fensFromFile.Replace("\r", "").Split('\n');
foreach (string fen in split)
{
if (fen.Trim().Length > 0)
{
fens.Add(fen.Trim());
}
}
#endif
}
Stopwatch time = new Stopwatch();
long[] res = new long[fens.Count];
for (int i = 0; i < fens.Count; i++)
{
time.Reset(); time.Start();
Position pos = new Position(fens[i], bool.Parse(OptionMap.Instance["UCI_Chess960"].v), Threads.main_thread());
Plug.Write("\nPosition: ");
Plug.Write((i + 1).ToString());
Plug.Write("/");
Plug.Write(fens.Count.ToString());
Plug.Write(Constants.endl);
if (limitType == "perft")
{
Int64 cnt = Search.perft(pos, limits.depth * DepthC.ONE_PLY);
Plug.Write("\nPerft ");
Plug.Write(limits.depth.ToString());
Plug.Write(" leaf nodes: ");
Plug.Write(cnt.ToString());
Plug.Write(Constants.endl);
nodes = cnt;
}
else
{
Threads.start_searching(pos, limits, new List <Move>());
Threads.wait_for_search_finished();
nodes = Search.RootPosition.nodes;
res[i] = nodes;
}
e = time.ElapsedMilliseconds;
nodesAll += nodes;
eAll += e;
Plug.Write("\n===========================");
Plug.Write("\nTotal time (ms) : ");
Plug.Write(e.ToString());
Plug.Write("\nNodes searched : ");
Plug.Write(nodes.ToString());
Plug.Write("\nNodes/second : ");
Plug.Write(((int)(nodes / (e / 1000.0))).ToString());
Plug.Write(Constants.endl);
}
Plug.Write("\n===========================");
Plug.Write("\nTotal time (ms) : ");
Plug.Write(eAll.ToString());
Plug.Write("\nNodes searched : ");
Plug.Write(nodesAll.ToString());
Plug.Write("\nNodes/second : ");
Plug.Write(((int)(nodesAll / (eAll / 1000.0))).ToString());
Plug.Write(Constants.endl);
//for (int i = 0; i < res.Length; i++)
//{
// Plug.Write(string.Format("{0}: {1}", i, res[i]));
// Plug.Write(Constants.endl);
//}
}