along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <deque>
#include <iostream>
+#include <stack>
#include <thread>
#include "bitboard.h"
#include <grpc/grpc.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
+#include "hashprobe.h"
#include "hashprobe.grpc.pb.h"
using grpc::Server;
using grpc::ServerContext;
using grpc::Status;
using grpc::StatusCode;
+using namespace hashprobe;
+
+Status HashProbeImpl::Probe(ServerContext* context,
+ const HashProbeRequest* request,
+ HashProbeResponse *response) {
+ Position pos;
+ StateInfo st;
+ pos.set(request->fen(), /*isChess960=*/false, &st, Threads.main());
+ if (!pos.pos_is_ok()) {
+ return Status(StatusCode::INVALID_ARGUMENT, "Invalid FEN");
+ }
+
+ bool invert = (pos.side_to_move() == BLACK);
+ StateListPtr setup_states = StateListPtr(new std::deque<StateInfo>(1));
+
+ ProbeMove(&pos, setup_states.get(), invert, response->mutable_root());
+
+ MoveList<LEGAL> moves(pos);
+ for (const ExtMove* em = moves.begin(); em != moves.end(); ++em) {
+ HashProbeLine *line = response->add_line();
+ FillMove(em->move, line->mutable_move());
+ setup_states->push_back(StateInfo());
+ pos.do_move(em->move, setup_states->back(), pos.gives_check(em->move));
+ ProbeMove(&pos, setup_states.get(), !invert, line);
+ pos.undo_move(em->move);
+ }
+
+ return Status::OK;
+}
+
+void HashProbeImpl::FillMove(Move move, HashProbeMove* decoded) {
+ if (!is_ok(move)) return;
+
+ Square from = from_sq(move);
+ Square to = to_sq(move);
+
+ if (type_of(move) == CASTLING) {
+ to = make_square(to > from ? FILE_G : FILE_C, rank_of(from));
+ }
+
+ decoded->set_from_sq(UCI::square(from));
+ decoded->set_to_sq(UCI::square(to));
+
+ if (type_of(move) == PROMOTION) {
+ decoded->set_promotion(std::string() + " PNBRQK"[promotion_type(move)]);
+ }
+}
+
+void HashProbeImpl::ProbeMove(Position* pos, std::deque<StateInfo>* setup_states, bool invert, HashProbeLine* response) {
+ bool found;
+ TTEntry *entry = TT.probe(pos->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;
+ }
+ }
-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");
+ response->set_depth(entry->depth());
+ FillValue(eval, response->mutable_eval());
+ if (entry->depth() > DEPTH_NONE) {
+ FillValue(value, response->mutable_value());
}
- bool found;
- TTEntry *entry = TT.probe(pos.key(), found);
- response->set_found(found);
- if (found) {
- response->set_move(entry->move());
- response->set_value(entry->value());
- response->set_eval(entry->eval());
- response->set_depth(entry->depth());
- response->set_bound(entry->bound());
+ response->set_bound(HashProbeLine::ValueBound(bound));
+
+ // Follow the PV until we hit an illegal move.
+ std::stack<Move> pv;
+ std::set<Key> seen;
+ while (found && is_ok(entry->move())) {
+ FillMove(entry->move(), response->add_pv());
+ if (seen.count(pos->key())) break;
+ pv.push(entry->move());
+ seen.insert(pos->key());
+ setup_states->push_back(StateInfo());
+ pos->do_move(entry->move(), setup_states->back(), pos->gives_check(entry->move()));
+ entry = TT.probe(pos->key(), found);
+ }
+
+ // Unroll the PV back again, so the Position object remains unchanged.
+ while (!pv.empty()) {
+ pos->undo_move(pv.top());
+ pv.pop();
}
- return Status::OK;
}
-};
-
-void rpc_thread()
-{
- std::string server_address("0.0.0.0:50051");
- HashProbeImpl service;
-
- ServerBuilder builder;
+}
+
+void HashProbeImpl::FillValue(Value value, HashProbeScore* score) {
+ if (abs(value) < VALUE_MATE - MAX_PLY) {
+ score->set_score_type(HashProbeScore::SCORE_CP);
+ score->set_score_cp(value * 100 / PawnValueEg);
+ } else {
+ score->set_score_type(HashProbeScore::SCORE_MATE);
+ score->set_score_mate((value > 0 ? VALUE_MATE - value + 1 : -VALUE_MATE - value) / 2);
+ }
+}
+
+HashProbeThread::HashProbeThread(const std::string &server_address) {
builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
builder.RegisterService(&service);
- std::unique_ptr<Server> server(builder.BuildAndStart());
+ server = std::move(builder.BuildAndStart());
std::cout << "Server listening on " << server_address << std::endl;
- server->Wait();
+ std::thread([this]{ server->Wait(); }).detach();
+}
+
+void HashProbeThread::Shutdown() {
+ server->Shutdown();
}
namespace PSQT {
Threads.set(Options["Threads"]);
Search::clear(); // After threads are up
- std::thread(&rpc_thread).detach();
-
UCI::loop(argc, argv);
Threads.set(0);
projects / stockfish / blobdiff