Return all candidate moves from the probe.

[stockfish] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index 31337fa676ef9fba1de2c99d4f3ade7bf7bde8d2..0e3e3abbb0a8b57c129bf62f39d901fe1ff2a16d 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,8 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -18,48 +19,116 @@
 */
 
 #include <iostream>
-#include <string>
+#include <thread>
 
 #include "bitboard.h"
-#include "evaluate.h"
 #include "position.h"
 #include "search.h"
 #include "thread.h"
-#include "ucioption.h"
+#include "tt.h"
+#include "uci.h"
+#include "syzygy/tbprobe.h"
 
-using namespace std;
+#include <grpc/grpc.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include "hashprobe.grpc.pb.h"
 
-extern void uci_loop();
-extern void benchmark(int argc, char* argv[]);
-extern void kpk_bitbase_init();
+using grpc::Server;
+using grpc::ServerBuilder;
+using grpc::ServerContext;
+using grpc::Status;
+using grpc::StatusCode;
 
-int main(int argc, char* argv[]) {
+class HashProbeImpl final : public HashProbe::Service {
+public:
+       Status Probe(ServerContext* context,
+                    const HashProbeRequest* request,
+                    HashProbeResponse *response) {
+               Position pos(request->fen(), /*isChess960=*/false, Threads.main());
+               if (!pos.pos_is_ok()) {
+                       return Status(StatusCode::INVALID_ARGUMENT, "Invalid FEN");
+               }
+
+               bool invert = (pos.side_to_move() == BLACK);
+
+               HashProbeMove *root_move = response->add_move();
+               root_move->set_move(MOVE_NONE);
+               ProbeMove(pos.key(), invert, root_move);
+
+               MoveList<LEGAL> moves(pos);
+               for (const ExtMove* em = moves.begin(); em != moves.end(); ++em) {
+                       HashProbeMove *move = response->add_move();
+                       move->set_move(em->move);
+                       ProbeMove(pos.key_after(em->move), !invert, move);
+               }
+
+               return Status::OK;
+       }
+
+       void ProbeMove(const int64_t key, bool invert, HashProbeMove* response) {
+               bool found;
+               TTEntry *entry = TT.probe(key, found);
+               response->set_found(found);
+               if (found) {
+                       Value value = entry->value();
+                       Value eval = entry->eval();
+                       Bound bound = entry->bound();
+
+                       if (invert) {
+                               value = -value;
+                               eval = -eval;
+                               if (bound == BOUND_UPPER) {
+                                       bound = BOUND_LOWER;
+                               } else if (bound == BOUND_LOWER) {
+                                       bound = BOUND_UPPER;
+                               }
+                       }
 
-  // Don't sync with C library I/O buffers, faster but now using printf()
-  // or scanf() could yield to issues because buffers are independent.
-  cout.sync_with_stdio(false);
-  cin.sync_with_stdio(false);
+                       response->set_pv_move(entry->move());
+                       response->set_depth(entry->depth());
+                       response->set_eval(eval);
+                       response->set_value(value);
+                       response->set_bound(HashProbeMove::ValueBound(bound));
+               }
+       }
+};
+       
+void rpc_thread()
+{
+       std::string server_address("0.0.0.0:50051");
+       HashProbeImpl service;
 
-  cout << engine_info() << endl;
+       ServerBuilder builder;
+       builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
+       builder.RegisterService(&service);
+       std::unique_ptr<Server> server(builder.BuildAndStart());
+       std::cout << "Server listening on " << server_address << std::endl;
+       server->Wait();
+}
+
+namespace PSQT {
+  void init();
+}
 
-  bitboards_init();
+int main(int argc, char* argv[]) {
+
+  std::cout << engine_info() << std::endl;
+
+  UCI::init(Options);
+  PSQT::init();
+  Bitboards::init();
   Position::init();
-  kpk_bitbase_init();
+  Bitbases::init();
   Search::init();
-  Threads.init();
-  Eval::init();
-  TT.set_size(Options["Hash"]);
-
-  if (argc == 1)
-      uci_loop();
+  Pawns::init();
+  Threads.set(Options["Threads"]);
+  Search::clear(); // After threads are up
 
-  else if (string(argv[1]) == "bench")
-      benchmark(argc, argv);
+  std::thread(&rpc_thread).detach();
 
-  else
-      cerr << "\nUsage: stockfish bench [hash size = 128] [threads = 1] "
-           << "[limit = 12] [fen positions file = default] "
-           << "[limited by depth, time, nodes or perft = depth]" << endl;
+  UCI::loop(argc, argv);
 
-  Threads.exit();
+  Threads.set(0);
+  return 0;
 }