vector<string> positions;

string ttSize, threads, valStr, posFile, valType;

int val, secsPerPos, maxDepth, maxNodes;

ttSize = argc > 2 ? argv[2] : "128";

threads = argc > 3 ? argv[3] : "1";

valStr = argc > 4 ? argv[4] : "12";

posFile = argc > 5 ? argv[5] : "default";

valType = argc > 6 ? argv[6] : "depth";

Options["Hash"].set_value(ttSize);

Options["Threads"].set_value(threads);

Options["OwnBook"].set_value("false");

Options["Use Search Log"].set_value("true");

Options["Search Log Filename"].set_value("bench.txt");

Options["Mode"].set_value("3");

secsPerPos = maxDepth = maxNodes = 0;

val = atoi(valStr.c_str());

if (valType == "depth" || valType == "perft")

maxDepth = val;

else if (valType == "time")

secsPerPos = val * 1000;

else

maxNodes = val;

if (posFile != "default")

{

ifstream fenFile(posFile.c_str());

if (!fenFile.is_open())

{

cerr << "Unable to open positions file " << posFile << endl;

exit(EXIT_FAILURE);

}

string pos;

while (fenFile.good())

{

getline(fenFile, pos);

if (!pos.empty())

positions.push_back(pos);

}

fenFile.close();

} else

for (int i = 0; !BenchmarkPositions[i].empty(); i++)

positions.push_back(BenchmarkPositions[i]);

vector<string>::iterator it;

int cnt = 1;

int64_t totalNodes = 0;

int startTime = get_system_time();

for (it = positions.begin(); it != positions.end(); ++it, ++cnt)

{

Move moves[1] = { MOVE_NONE };

int dummy[2] = { 0, 0 };

Position pos(*it, false, 0);

cerr << "\nBench position: " << cnt << '/' << positions.size() << endl << endl;

if (valType == "perft")

{

int64_t perftCnt = perft(pos, maxDepth * ONE_PLY);

cerr << "\nPerft " << maxDepth << " result (nodes searched): " << perftCnt << endl << endl;

totalNodes += perftCnt;

} else {

if (!think(pos, false, false, dummy, dummy, 0, maxDepth, maxNodes, secsPerPos, moves))

break;

totalNodes += pos.nodes_searched();

}

}

cnt = get_system_time() - startTime;

cerr << "==============================="

<< "\nTotal time (ms) : " << cnt

<< "\nNodes searched : " << totalNodes

<< "\nNodes/second : " << (int)(totalNodes/(cnt/1000.0)) << endl << endl;

// Under MS Visual C++ debug window always unconditionally closes

// when program exits, this is bad because we want to read results before.

#if (defined(WINDOWS) || defined(WIN32) || defined(WIN64))

cerr << "Press any key to exit" << endl;

cin >> ttSize;

#endif