std::vector<RootMove> RootMoves;
Position RootPosition;
Time SearchTime;
+ StateStackPtr SetupStates;
}
using std::string;
-using std::cout;
-using std::endl;
using Eval::evaluate;
using namespace Search;
-// For some reason argument-dependent lookup (ADL) doesn't work for Android's
-// STLPort, so explicitly qualify following functions.
-using std::count;
-using std::find;
-
namespace {
// Set to true to force running with one thread. Used for debugging
&& type_of(pos.piece_on(to_sq(m))) != PAWN
&& type_of(m) == NORMAL
&& ( pos.non_pawn_material(WHITE) + pos.non_pawn_material(BLACK)
- - PieceValueMidgame[pos.piece_on(to_sq(m))] == VALUE_ZERO))
+ - PieceValue[Mg][pos.piece_on(to_sq(m))] == VALUE_ZERO))
return true;
return false;
/// Search::perft() is our utility to verify move generation. All the leaf nodes
/// up to the given depth are generated and counted and the sum returned.
-int64_t Search::perft(Position& pos, Depth depth) {
-
- StateInfo st;
- int64_t cnt = 0;
-
- MoveList<LEGAL> ml(pos);
+size_t Search::perft(Position& pos, Depth depth) {
- // At the last ply just return the number of moves (leaf nodes)
+ // At the last ply just return the number of legal moves (leaf nodes)
if (depth == ONE_PLY)
- return ml.size();
+ return MoveList<LEGAL>(pos).size();
+ StateInfo st;
+ size_t cnt = 0;
CheckInfo ci(pos);
- for ( ; !ml.end(); ++ml)
+
+ for (MoveList<LEGAL> ml(pos); !ml.end(); ++ml)
{
pos.do_move(ml.move(), st, ci, pos.move_gives_check(ml.move(), ci));
cnt += perft(pos, depth - ONE_PLY);
pos.undo_move(ml.move());
}
+
return cnt;
}
if (RootMoves.empty())
{
- cout << "info depth 0 score "
- << score_to_uci(pos.in_check() ? -VALUE_MATE : VALUE_DRAW) << endl;
+ sync_cout << "info depth 0 score "
+ << score_to_uci(pos.in_check() ? -VALUE_MATE : VALUE_DRAW) << sync_endl;
RootMoves.push_back(MOVE_NONE);
goto finalize;
{
Move bookMove = book.probe(pos, Options["Book File"], Options["Best Book Move"]);
- if (bookMove && count(RootMoves.begin(), RootMoves.end(), bookMove))
+ if (bookMove && std::count(RootMoves.begin(), RootMoves.end(), bookMove))
{
- std::swap(RootMoves[0], *find(RootMoves.begin(), RootMoves.end(), bookMove));
+ std::swap(RootMoves[0], *std::find(RootMoves.begin(), RootMoves.end(), bookMove));
goto finalize;
}
}
<< " time: " << Limits.time[pos.side_to_move()]
<< " increment: " << Limits.inc[pos.side_to_move()]
<< " moves to go: " << Limits.movestogo
- << endl;
+ << std::endl;
}
Threads.wake_up();
StateInfo st;
pos.do_move(RootMoves[0].pv[0], st);
- log << "\nPonder move: " << move_to_san(pos, RootMoves[0].pv[1]) << endl;
+ log << "\nPonder move: " << move_to_san(pos, RootMoves[0].pv[1]) << std::endl;
pos.undo_move(RootMoves[0].pv[0]);
}
pos.this_thread()->wait_for_stop_or_ponderhit();
// Best move could be MOVE_NONE when searching on a stalemate position
- cout << "bestmove " << move_to_uci(RootMoves[0].pv[0], Chess960)
- << " ponder " << move_to_uci(RootMoves[0].pv[1], Chess960) << endl;
+ sync_cout << "bestmove " << move_to_uci(RootMoves[0].pv[0], Chess960)
+ << " ponder " << move_to_uci(RootMoves[0].pv[1], Chess960) << sync_endl;
}
// Send full PV info to GUI if we are going to leave the loop or
// if we have a fail high/low and we are deep in the search.
if ((bestValue > alpha && bestValue < beta) || SearchTime.elapsed() > 2000)
- cout << uci_pv(pos, depth, alpha, beta) << endl;
+ sync_cout << uci_pv(pos, depth, alpha, beta) << sync_endl;
// In case of failing high/low increase aspiration window and
// research, otherwise exit the fail high/low loop.
{
Log log(Options["Search Log Filename"]);
log << pretty_pv(pos, depth, bestValue, SearchTime.elapsed(), &RootMoves[0].pv[0])
- << endl;
+ << std::endl;
}
// Filter out startup noise when monitoring best move stability
if (skillBest == MOVE_NONE) // Still unassigned ?
skillBest = do_skill_level();
- std::swap(RootMoves[0], *find(RootMoves.begin(), RootMoves.end(), skillBest));
+ std::swap(RootMoves[0], *std::find(RootMoves.begin(), RootMoves.end(), skillBest));
}
}
Depth R = 3 * ONE_PLY + depth / 4;
// Null move dynamic reduction based on value
- if (refinedValue - PawnValueMidgame > beta)
+ if (refinedValue - PawnValueMg > beta)
R += ONE_PLY;
pos.do_null_move<true>(st);
// At root obey the "searchmoves" option and skip moves not listed in Root
// Move List, as a consequence any illegal move is also skipped. In MultiPV
// mode we also skip PV moves which have been already searched.
- if (RootNode && !count(RootMoves.begin() + PVIdx, RootMoves.end(), move))
+ if (RootNode && !std::count(RootMoves.begin() + PVIdx, RootMoves.end(), move))
continue;
// At PV and SpNode nodes we want all moves to be legal since the beginning
if (SpNode)
{
moveCount = ++sp->moveCount;
- lock_release(sp->lock);
+ sp->mutex.unlock();
}
else
moveCount++;
Signals.firstRootMove = (moveCount == 1);
if (thisThread == Threads.main_thread() && SearchTime.elapsed() > 2000)
- cout << "info depth " << depth / ONE_PLY
- << " currmove " << move_to_uci(move, Chess960)
- << " currmovenumber " << moveCount + PVIdx << endl;
+ sync_cout << "info depth " << depth / ONE_PLY
+ << " currmove " << move_to_uci(move, Chess960)
+ << " currmovenumber " << moveCount + PVIdx << sync_endl;
}
isPvMove = (PvNode && moveCount <= 1);
&& (!threatMove || !connected_threat(pos, move, threatMove)))
{
if (SpNode)
- lock_grab(sp->lock);
+ sp->mutex.lock();
continue;
}
if (futilityValue < beta)
{
if (SpNode)
- lock_grab(sp->lock);
+ sp->mutex.lock();
continue;
}
&& pos.see_sign(move) < 0)
{
if (SpNode)
- lock_grab(sp->lock);
+ sp->mutex.lock();
continue;
}
// Step 18. Check for new best move
if (SpNode)
{
- lock_grab(sp->lock);
+ sp->mutex.lock();
bestValue = sp->bestValue;
alpha = sp->alpha;
}
// be trusted, and we don't update the best move and/or PV.
if (RootNode && !Signals.stop)
{
- RootMove& rm = *find(RootMoves.begin(), RootMoves.end(), move);
+ RootMove& rm = *std::find(RootMoves.begin(), RootMoves.end(), move);
// PV move or new best move ?
if (isPvMove || value > alpha)
alpha = bestValue;
futilityBase = ss->eval + evalMargin + FutilityMarginQS;
- enoughMaterial = pos.non_pawn_material(pos.side_to_move()) > RookValueMidgame;
+ enoughMaterial = pos.non_pawn_material(pos.side_to_move()) > RookValueMg;
}
// Initialize a MovePicker object for the current position, and prepare
&& !pos.is_passed_pawn_push(move))
{
futilityValue = futilityBase
- + PieceValueEndgame[pos.piece_on(to_sq(move))]
- + (type_of(move) == ENPASSANT ? PawnValueEndgame : VALUE_ZERO);
+ + PieceValue[Eg][pos.piece_on(to_sq(move))]
+ + (type_of(move) == ENPASSANT ? PawnValueEg : VALUE_ZERO);
if (futilityValue < beta)
{
&& givesCheck
&& move != ttMove
&& !pos.is_capture_or_promotion(move)
- && ss->eval + PawnValueMidgame / 4 < beta
+ && ss->eval + PawnValueMg / 4 < beta
&& !check_is_dangerous(pos, move, futilityBase, beta))
continue;
while (b)
{
// Note that here we generate illegal "double move"!
- if (futilityBase + PieceValueEndgame[pos.piece_on(pop_lsb(&b))] >= beta)
+ if (futilityBase + PieceValue[Eg][pos.piece_on(pop_lsb(&b))] >= beta)
return true;
}
// Case 2: If the threatened piece has value less than or equal to the
// value of the threatening piece, don't prune moves which defend it.
if ( pos.is_capture(threat)
- && ( PieceValueMidgame[pos.piece_on(tfrom)] >= PieceValueMidgame[pos.piece_on(tto)]
+ && ( PieceValue[Mg][pos.piece_on(tfrom)] >= PieceValue[Mg][pos.piece_on(tto)]
|| type_of(pos.piece_on(tfrom)) == KING)
&& pos.move_attacks_square(m, tto))
return true;
// RootMoves are already sorted by score in descending order
size_t size = std::min(MultiPV, RootMoves.size());
- int variance = std::min(RootMoves[0].score - RootMoves[size - 1].score, PawnValueMidgame);
+ int variance = std::min(RootMoves[0].score - RootMoves[size - 1].score, PawnValueMg);
int weakness = 120 - 2 * SkillLevel;
int max_s = -VALUE_INFINITE;
Move best = MOVE_NONE;
int t = SearchTime.elapsed();
int selDepth = 0;
- for (int i = 0; i < Threads.size(); i++)
+ for (size_t i = 0; i < Threads.size(); i++)
if (Threads[i].maxPly > selDepth)
selDepth = Threads[i].maxPly;
}
-/// Thread::idle_loop() is where the thread is parked when it has no work to do.
-/// The parameter 'master_sp', if non-NULL, is a pointer to an active SplitPoint
-/// object for which the thread is the master.
+/// Thread::idle_loop() is where the thread is parked when it has no work to do
+
+void Thread::idle_loop() {
+
+ // Pointer 'sp_master', if non-NULL, points to the active SplitPoint
+ // object for which the thread is the master.
+ const SplitPoint* sp_master = splitPointsCnt ? curSplitPoint : NULL;
-void Thread::idle_loop(SplitPoint* sp_master) {
+ assert(!sp_master || (sp_master->master == this && is_searching));
// If this thread is the master of a split point and all slaves have
// finished their work at this split point, return from the idle loop.
}
// Grab the lock to avoid races with Thread::wake_up()
- lock_grab(sleepLock);
+ mutex.lock();
// If we are master and all slaves have finished don't go to sleep
if (sp_master && !sp_master->slavesMask)
{
- lock_release(sleepLock);
+ mutex.unlock();
break;
}
// in the meanwhile, allocated us and sent the wake_up() call before we
// had the chance to grab the lock.
if (do_sleep || !is_searching)
- cond_wait(sleepCond, sleepLock);
+ sleepCondition.wait(mutex);
- lock_release(sleepLock);
+ mutex.unlock();
}
// If this thread has been assigned work, launch a search
{
assert(!do_sleep && !do_exit);
- lock_grab(Threads.splitLock);
+ Threads.mutex.lock();
assert(is_searching);
SplitPoint* sp = curSplitPoint;
- lock_release(Threads.splitLock);
+ Threads.mutex.unlock();
Stack ss[MAX_PLY_PLUS_2];
Position pos(*sp->pos, this);
memcpy(ss, sp->ss - 1, 4 * sizeof(Stack));
(ss+1)->sp = sp;
- lock_grab(sp->lock);
+ sp->mutex.lock();
if (sp->nodeType == Root)
search<SplitPointRoot>(pos, ss+1, sp->alpha, sp->beta, sp->depth);
// case we are the last slave of the split point.
if ( Threads.use_sleeping_threads()
&& this != sp->master
- && !sp->master->is_searching)
+ && !sp->slavesMask)
+ {
+ assert(!sp->master->is_searching);
sp->master->wake_up();
+ }
// After releasing the lock we cannot access anymore any SplitPoint
// related data in a safe way becuase it could have been released under
// our feet by the sp master. Also accessing other Thread objects is
// unsafe because if we are exiting there is a chance are already freed.
- lock_release(sp->lock);
+ sp->mutex.unlock();
}
}
}
if (lastInfoTime.elapsed() >= 1000)
{
- lastInfoTime.restart();
+ lastInfoTime = Time::current_time();
dbg_print();
}
projects / stockfish / blobdiff