--- /dev/null
- FillValue(eval, response->mutable_eval());
+#include <deque>
+#include <cstddef>
+#include <iostream>
+#include <stack>
+#include <thread>
+
+#include "bitboard.h"
+#include "evaluate.h"
+#include "misc.h"
+#include "position.h"
+#include "search.h"
+#include "thread.h"
+#include "tune.h"
+#include "types.h"
+#include "uci.h"
+
+#include <grpc/grpc.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include "hashprobe.h"
+#include "hashprobe.grpc.pb.h"
+#include "tt.h"
+
+using grpc::Server;
+using grpc::ServerBuilder;
+using grpc::ServerContext;
+using grpc::Status;
+using grpc::StatusCode;
+using namespace hashprobe;
+using namespace Stockfish;
+
+Status HashProbeImpl::Probe(ServerContext* context,
+ const HashProbeRequest* request,
+ HashProbeResponse *response) {
+ Position pos;
+ StateInfo st;
+ pos.set(request->fen(), /*isChess960=*/false, &st);
+ 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(&pos, *em, line->mutable_move());
+ setup_states->push_back(StateInfo());
+ pos.do_move(*em, setup_states->back());
+ ProbeMove(&pos, setup_states.get(), !invert, line);
+ pos.undo_move(*em);
+ }
+
+ return Status::OK;
+}
+
+void HashProbeImpl::FillMove(Position *pos, Move move, HashProbeMove* decoded) {
+ if (!move.is_ok()) return;
+
+ Square from = move.from_sq();
+ Square to = move.to_sq();
+
+ if (move.type_of() == CASTLING) {
+ to = make_square(to > from ? FILE_G : FILE_C, rank_of(from));
+ }
+
+ Piece moved_piece = pos->moved_piece(move);
+ std::string pretty;
+ if (move.type_of() == CASTLING) {
+ if (to > from) {
+ pretty = "O-O";
+ } else {
+ pretty = "O-O-O";
+ }
+ } else if (type_of(moved_piece) == PAWN) {
+ if (move.type_of() == EN_PASSANT || pos->piece_on(to) != NO_PIECE) {
+ // Capture.
+ pretty = char('a' + file_of(from));
+ pretty += "x";
+ }
+ pretty += UCI::square(to);
+ if (move.type_of() == PROMOTION) {
+ pretty += "=";
+ pretty += " PNBRQK"[move.promotion_type()];
+ }
+ } else {
+ pretty = " PNBRQK"[type_of(moved_piece)];
+ Bitboard attackers = pos->attackers_to(to) & pos->pieces(color_of(moved_piece), type_of(moved_piece));
+ if (more_than_one(attackers)) {
+ // Remove all illegal moves to disambiguate.
+ Bitboard att_copy = attackers;
+ while (att_copy) {
+ Square s = pop_lsb(att_copy);
+ Move m(s, to);
+ if (!pos->pseudo_legal(m) || !pos->legal(m)) {
+ attackers &= ~square_bb(s);
+ }
+ }
+ }
+ if (more_than_one(attackers)) {
+ // Disambiguate by file if possible.
+ Bitboard attackers_this_file = attackers & file_bb(file_of(from));
+ if (attackers != attackers_this_file) {
+ pretty += char('a' + file_of(from));
+ attackers = attackers_this_file;
+ }
+ if (more_than_one(attackers)) {
+ // Still ambiguous, so need to disambiguate by rank.
+ pretty += char('1' + rank_of(from));
+ }
+ }
+
+ if (move.type_of() == EN_PASSANT || pos->piece_on(to) != NO_PIECE) {
+ pretty += "x";
+ }
+
+ pretty += UCI::square(to);
+ }
+
+ if (pos->gives_check(move)) {
+ // Check if mate.
+ StateInfo si;
+ pos->do_move(move, si, true);
+ if (MoveList<LEGAL>(*pos).size() > 0) {
+ pretty += "+";
+ } else {
+ pretty += "#";
+ }
+ pos->undo_move(move);
+ }
+
+ decoded->set_pretty(pretty);
+}
+
+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) {
+ TTEntry entry_copy = *entry;
+ Value value = entry_copy.value();
+ Value eval = entry_copy.eval();
+ Bound bound = entry_copy.bound();
+
+ if (invert) {
+ value = -value;
+ eval = -eval;
+ if (bound == BOUND_UPPER) {
+ bound = BOUND_LOWER;
+ } else if (bound == BOUND_LOWER) {
+ bound = BOUND_UPPER;
+ }
+ }
+
+ response->set_depth(entry_copy.depth());
- FillValue(value, response->mutable_value());
++ FillValue(eval, response->mutable_eval(), *pos);
+ if (entry_copy.depth() > DEPTH_NONE) {
- void HashProbeImpl::FillValue(Value value, HashProbeScore* score) {
++ FillValue(value, response->mutable_value(), *pos);
+ }
+ response->set_bound(HashProbeLine::ValueBound(bound));
+
+ // Follow the PV until we hit an illegal move.
+ std::stack<Move> pv;
+ std::set<Key> seen;
+ while (entry_copy.move().is_ok() &&
+ pos->pseudo_legal(entry_copy.move()) &&
+ pos->legal(entry_copy.move())) {
+ FillMove(pos, entry_copy.move(), response->add_pv());
+ if (seen.count(pos->key())) break;
+ pv.push(entry_copy.move());
+ seen.insert(pos->key());
+ setup_states->push_back(StateInfo());
+ pos->do_move(entry_copy.move(), setup_states->back());
+ entry = tt.probe(pos->key(), found);
+ if (!found) {
+ break;
+ }
+ entry_copy = *entry;
+ }
+
+ // Unroll the PV back again, so the Position object remains unchanged.
+ while (!pv.empty()) {
+ pos->undo_move(pv.top());
+ pv.pop();
+ }
+ }
+}
+
- score->set_score_cp(UCI::to_cp(value));
++void HashProbeImpl::FillValue(Value value, HashProbeScore* score, Position& pos) {
+ if (abs(value) < VALUE_MATE - MAX_PLY) {
+ score->set_score_type(HashProbeScore::SCORE_CP);
++ score->set_score_cp(UCI::to_cp(value, pos));
+ } 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, TranspositionTable &tt)
+ : service(tt) {
+ builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
+ builder.RegisterService(&service);
+ server = std::move(builder.BuildAndStart());
+ std::cout << "Server listening on " << server_address << std::endl;
+ std::thread([this]{ server->Wait(); }).detach();
+}
+
+void HashProbeThread::Shutdown() {
+ server->Shutdown();
+}
+
--- /dev/null
- void FillValue(Stockfish::Value value, hashprobe::HashProbeScore* score);
+#ifndef HASHPROBE_H_INCLUDED
+#define HASHPROBE_H_INCLUDED
+
+#include "position.h"
+#include "types.h"
+#include "tt.h"
+
+#include <deque>
+#include <string>
+
+#include <grpc/grpc.h>
+#include <grpc++/server.h>
+#include <grpc++/server_builder.h>
+#include "hashprobe.grpc.pb.h"
+
+class HashProbeImpl final : public hashprobe::HashProbe::Service {
+public:
+ HashProbeImpl(Stockfish::TranspositionTable& tt) : tt(tt) {}
+
+ grpc::Status Probe(grpc::ServerContext* context,
+ const hashprobe::HashProbeRequest* request,
+ hashprobe::HashProbeResponse *response);
+
+private:
+ void FillMove(Stockfish::Position* pos, Stockfish::Move move, hashprobe::HashProbeMove* decoded);
+ void ProbeMove(Stockfish::Position* pos, std::deque<Stockfish::StateInfo>* setup_states, bool invert, hashprobe::HashProbeLine* response);
++ void FillValue(Stockfish::Value value, hashprobe::HashProbeScore* score, Stockfish::Position& pos);
+
+ Stockfish::TranspositionTable& tt;
+};
+
+class HashProbeThread {
+public:
+ HashProbeThread(const std::string &server_address, Stockfish::TranspositionTable& tt);
+ void Shutdown();
+
+private:
+ HashProbeImpl service;
+ grpc::ServerBuilder builder;
+ std::unique_ptr<grpc::Server> server;
+};
+
+#endif
projects / stockfish / commitdiff