### Object files
OBJS = benchmark.o bitbase.o bitboard.o endgame.o evaluate.o main.o \
material.o misc.o movegen.o movepick.o pawns.o position.o \
- search.o thread.o timeman.o tt.o uci.o ucioption.o syzygy/tbprobe.o
+ search.o thread.o timeman.o tt.o uci.o ucioption.o
### ==========================================================================
### Section 2. High-level Configuration
### 3.1 Selecting compiler (default = gcc)
-CXXFLAGS += -Wall -Wcast-qual -fno-exceptions -fno-rtti $(EXTRACXXFLAGS)
+CXXFLAGS += -Wall -Wcast-qual -fno-exceptions -fno-rtti -std=c++11 $(EXTRACXXFLAGS)
LDFLAGS += $(EXTRALDFLAGS)
ifeq ($(COMP),)
ifeq ($(COMP),gcc)
comp=gcc
CXX=g++
- CXXFLAGS += -ansi -pedantic -Wno-long-long -Wextra -Wshadow
+ CXXFLAGS += -pedantic -Wno-long-long -Wextra -Wshadow
+ LDFLAGS += -Wl,--no-as-needed
endif
ifeq ($(COMP),mingw)
$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_prepare)
@echo ""
@echo "Step 1/4. Building executable for benchmark ..."
- @touch *.cpp *.h syzygy/*.cpp syzygy/*.h
+ @touch *.cpp *.h
$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_make)
@echo ""
@echo "Step 2/4. Running benchmark for pgo-build ..."
@$(PGOBENCH) > /dev/null
@echo ""
@echo "Step 3/4. Building final executable ..."
- @touch *.cpp *.h syzygy/*.cpp syzygy/*.h
+ @touch *.cpp *.h
$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_use)
@echo ""
@echo "Step 4/4. Deleting profile data ..."
-strip $(BINDIR)/$(EXE)
clean:
- $(RM) $(EXE) $(EXE).exe *.o .depend *~ core bench.txt *.gcda ./syzygy/*.o ./syzygy/*.gcda
+ $(RM) $(EXE) $(EXE).exe *.o .depend *~ core bench.txt *.gcda
default:
help
all
gcc-profile-clean:
- @rm -rf *.gcda *.gcno syzygy/*.gcda syzygy/*.gcno bench.txt
+ @rm -rf *.gcda *.gcno bench.txt
icc-profile-prepare:
$(MAKE) ARCH=$(ARCH) COMP=$(COMP) icc-profile-clean
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <algorithm>
#include <fstream>
#include <iostream>
#include <istream>
namespace {
-const char* Defaults[] = {
+const vector<string> Defaults = {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
"r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 10",
"8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 11",
TT.clear();
if (limitType == "time")
- limits.movetime = atoi(limit.c_str()); // movetime is in ms
+ limits.movetime = stoi(limit); // movetime is in ms
else if (limitType == "nodes")
- limits.nodes = atoi(limit.c_str());
+ limits.nodes = stoi(limit);
else if (limitType == "mate")
- limits.mate = atoi(limit.c_str());
+ limits.mate = stoi(limit);
else
- limits.depth = atoi(limit.c_str());
+ limits.depth = stoi(limit);
if (fenFile == "default")
- fens.assign(Defaults, Defaults + 37);
+ fens = Defaults;
else if (fenFile == "current")
fens.push_back(current.fen());
else
{
string fen;
- ifstream file(fenFile.c_str());
+ ifstream file(fenFile);
if (!file.is_open())
{
}
}
- elapsed = std::max(Time::now() - elapsed, Time::point(1)); // Avoid a 'divide by zero'
+ elapsed = Time::now() - elapsed + 1; // Ensure positivity to avoid a 'divide by zero'
dbg_print(); // Just before to exit
string fen = sides[0] + char(8 - sides[0].length() + '0') + "/8/8/8/8/8/8/"
+ sides[1] + char(8 - sides[1].length() + '0') + " w - - 0 10";
- return Position(fen, false, NULL).material_key();
+ return Position(fen, false, nullptr).material_key();
}
- template<typename M>
- void delete_endgame(const typename M::value_type& p) { delete p.second; }
-
} // namespace
add<KRPPKRP>("KRPPKRP");
}
-Endgames::~Endgames() {
-
- for_each(m1.begin(), m1.end(), delete_endgame<M1>);
- for_each(m2.begin(), m2.end(), delete_endgame<M2>);
-}
-template<EndgameType E>
+template<EndgameType E, typename T>
void Endgames::add(const string& code) {
- map((Endgame<E>*)0)[key(code, WHITE)] = new Endgame<E>(WHITE);
- map((Endgame<E>*)0)[key(code, BLACK)] = new Endgame<E>(BLACK);
+ map<T>()[key(code, WHITE)] = std::unique_ptr<T>(new Endgame<E>(WHITE));
+ map<T>()[key(code, BLACK)] = std::unique_ptr<T>(new Endgame<E>(BLACK));
}
#define ENDGAME_H_INCLUDED
#include <map>
+#include <memory>
#include <string>
+#include <type_traits>
+#include <utility>
#include "position.h"
#include "types.h"
/// Endgame functions can be of two types depending on whether they return a
-/// Value or a ScaleFactor. Type eg_fun<int>::type returns either ScaleFactor
-/// or Value depending on whether the template parameter is 0 or 1.
-
-template<int> struct eg_fun { typedef Value type; };
-template<> struct eg_fun<1> { typedef ScaleFactor type; };
+/// Value or a ScaleFactor.
+template<EndgameType E>
+using eg_fun = std::conditional<(E < SCALING_FUNCTIONS), Value, ScaleFactor>;
/// Base and derived templates for endgame evaluation and scaling functions
};
-template<EndgameType E, typename T = typename eg_fun<(E > SCALING_FUNCTIONS)>::type>
+template<EndgameType E, typename T = typename eg_fun<E>::type>
struct Endgame : public EndgameBase<T> {
explicit Endgame(Color c) : strongSide(c), weakSide(~c) {}
class Endgames {
- typedef std::map<Key, EndgameBase<eg_fun<0>::type>*> M1;
- typedef std::map<Key, EndgameBase<eg_fun<1>::type>*> M2;
+ template<typename T> using Map = std::map<Key, std::unique_ptr<T>>;
- M1 m1;
- M2 m2;
+ template<EndgameType E, typename T = EndgameBase<typename eg_fun<E>::type>>
+ void add(const std::string& code);
- M1& map(M1::mapped_type) { return m1; }
- M2& map(M2::mapped_type) { return m2; }
+ template<typename T, int I = std::is_same<T, EndgameBase<ScaleFactor>>::value>
+ Map<T>& map() { return std::get<I>(maps); }
- template<EndgameType E> void add(const std::string& code);
+ std::pair<Map<EndgameBase<Value>>, Map<EndgameBase<ScaleFactor>>> maps;
public:
Endgames();
- ~Endgames();
- template<typename T> T probe(Key key, T& eg) {
- return eg = map(eg).count(key) ? map(eg)[key] : NULL;
- }
+ template<typename T> T* probe(Key key, T** eg)
+ { return *eg = map<T>().count(key) ? map<T>()[key].get() : nullptr; }
};
#endif // #ifndef ENDGAME_H_INCLUDED
#include "thread.h"
#include "tt.h"
#include "uci.h"
-#include "syzygy/tbprobe.h"
int main(int argc, char* argv[]) {
Eval::init();
Pawns::init();
Threads.init();
- Tablebases::init(Options["SyzygyPath"]);
TT.resize(Options["Hash"]);
UCI::loop(argc, argv);
// Let's look if we have a specialized evaluation function for this particular
// material configuration. Firstly we look for a fixed configuration one, then
// for a generic one if the previous search failed.
- if (pos.this_thread()->endgames.probe(key, e->evaluationFunction))
+ if (pos.this_thread()->endgames.probe(key, &e->evaluationFunction))
return e;
if (is_KXK<WHITE>(pos))
// configuration. Is there a suitable specialized scaling function?
EndgameBase<ScaleFactor>* sf;
- if (pos.this_thread()->endgames.probe(key, sf))
+ if (pos.this_thread()->endgames.probe(key, &sf))
{
e->scalingFunction[sf->strong_side()] = sf; // Only strong color assigned
return e;
Score imbalance() const { return make_score(value, value); }
Phase game_phase() const { return gamePhase; }
- bool specialized_eval_exists() const { return evaluationFunction != NULL; }
+ bool specialized_eval_exists() const { return evaluationFunction != nullptr; }
Value evaluate(const Position& pos) const { return (*evaluationFunction)(pos); }
// scale_factor takes a position and a color as input and returns a scale factor
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <chrono>
#include <fstream>
#include <iomanip>
#include <iostream>
#include "thread.h"
using namespace std;
+using namespace std::chrono;
namespace {
}
+/// Convert system time to milliseconds. That's all we need.
+
+Time::point Time::now() {
+ return duration_cast<milliseconds>(steady_clock::now().time_since_epoch()).count();
+}
+
+
/// Debug functions used mainly to collect run-time statistics
void dbg_hit_on(bool b) { ++hits[0]; if (b) ++hits[1]; }
std::ostream& operator<<(std::ostream& os, SyncCout sc) {
- static Mutex m;
+ static std::mutex m;
if (sc == IO_LOCK)
m.lock();
void start_logger(bool b) { Logger::start(b); }
-/// timed_wait() waits for msec milliseconds. It is mainly a helper to wrap
-/// the conversion from milliseconds to struct timespec, as used by pthreads.
-
-void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) {
-
-#ifdef _WIN32
- int tm = msec;
-#else
- timespec ts, *tm = &ts;
- uint64_t ms = Time::now() + msec;
-
- ts.tv_sec = ms / 1000;
- ts.tv_nsec = (ms % 1000) * 1000000LL;
-#endif
-
- cond_timedwait(sleepCond, sleepLock, tm);
-}
-
-
/// prefetch() preloads the given address in L1/L2 cache. This is a non-blocking
/// function that doesn't stall the CPU waiting for data to be loaded from memory,
/// which can be quite slow.
#include "types.h"
const std::string engine_info(bool to_uci = false);
-void timed_wait(WaitCondition&, Lock&, int);
void prefetch(char* addr);
void start_logger(bool b);
namespace Time {
typedef int64_t point;
- inline point now() { return system_time_to_msec(); }
+ point now();
}
template<Color Us, GenType Type> FORCE_INLINE
ExtMove* generate_all(const Position& pos, ExtMove* moveList, Bitboard target,
- const CheckInfo* ci = NULL) {
+ const CheckInfo* ci = nullptr) {
const bool Checks = Type == QUIET_CHECKS;
template<GenType T>
struct MoveList {
- explicit MoveList(const Position& pos) : cur(moveList), last(generate<T>(pos, moveList)) { last->move = MOVE_NONE; }
- void operator++() { ++cur; }
- Move operator*() const { return cur->move; }
+ explicit MoveList(const Position& pos) : last(generate<T>(pos, moveList)) {}
+ const ExtMove* begin() const { return moveList; }
+ const ExtMove* end() const { return last; }
size_t size() const { return last - moveList; }
bool contains(Move m) const {
- for (const ExtMove* it(moveList); it != last; ++it) if (it->move == m) return true;
+ for (const ExtMove& ms : *this) if (ms.move == m) return true;
return false;
}
private:
- ExtMove moveList[MAX_MOVES];
- ExtMove *cur, *last;
+ ExtMove moveList[MAX_MOVES], *last;
};
#endif // #ifndef MOVEGEN_H_INCLUDED
+++ /dev/null
-/*
- Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, 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
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Stockfish is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef PLATFORM_H_INCLUDED
-#define PLATFORM_H_INCLUDED
-
-#ifdef _MSC_VER
-
-// Disable some silly and noisy warnings from MSVC compiler
-#pragma warning(disable: 4127) // Conditional expression is constant
-#pragma warning(disable: 4146) // Unary minus operator applied to unsigned type
-#pragma warning(disable: 4800) // Forcing value to bool 'true' or 'false'
-#pragma warning(disable: 4996) // Function _ftime() may be unsafe
-
-// MSVC does not support <inttypes.h>
-typedef signed __int8 int8_t;
-typedef unsigned __int8 uint8_t;
-typedef signed __int16 int16_t;
-typedef unsigned __int16 uint16_t;
-typedef signed __int32 int32_t;
-typedef unsigned __int32 uint32_t;
-typedef signed __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-
-#else
-# include <inttypes.h>
-#endif
-
-#ifndef _WIN32 // Linux - Unix
-
-# include <sys/time.h>
-
-inline int64_t system_time_to_msec() {
- timeval t;
- gettimeofday(&t, NULL);
- return t.tv_sec * 1000LL + t.tv_usec / 1000;
-}
-
-# include <pthread.h>
-typedef pthread_mutex_t Lock;
-typedef pthread_cond_t WaitCondition;
-typedef pthread_t NativeHandle;
-typedef void*(*pt_start_fn)(void*);
-
-# define lock_init(x) pthread_mutex_init(&(x), NULL)
-# define lock_grab(x) pthread_mutex_lock(&(x))
-# define lock_release(x) pthread_mutex_unlock(&(x))
-# define lock_destroy(x) pthread_mutex_destroy(&(x))
-# define cond_destroy(x) pthread_cond_destroy(&(x))
-# define cond_init(x) pthread_cond_init(&(x), NULL)
-# define cond_signal(x) pthread_cond_signal(&(x))
-# define cond_wait(x,y) pthread_cond_wait(&(x),&(y))
-# define cond_timedwait(x,y,z) pthread_cond_timedwait(&(x),&(y),z)
-# define thread_create(x,f,t) pthread_create(&(x),NULL,(pt_start_fn)f,t)
-# define thread_join(x) pthread_join(x, NULL)
-
-#else // Windows and MinGW
-
-# include <sys/timeb.h>
-
-inline int64_t system_time_to_msec() {
- _timeb t;
- _ftime(&t);
- return t.time * 1000LL + t.millitm;
-}
-
-#ifndef NOMINMAX
-# define NOMINMAX // disable macros min() and max()
-#endif
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-#undef NOMINMAX
-
-// We use critical sections on Windows to support Windows XP and older versions.
-// Unfortunately, cond_wait() is racy between lock_release() and WaitForSingleObject()
-// but apart from this they have the same speed performance of SRW locks.
-typedef CRITICAL_SECTION Lock;
-typedef HANDLE WaitCondition;
-typedef HANDLE NativeHandle;
-
-// On Windows 95 and 98 parameter lpThreadId may not be null
-inline DWORD* dwWin9xKludge() { static DWORD dw; return &dw; }
-
-# define lock_init(x) InitializeCriticalSection(&(x))
-# define lock_grab(x) EnterCriticalSection(&(x))
-# define lock_release(x) LeaveCriticalSection(&(x))
-# define lock_destroy(x) DeleteCriticalSection(&(x))
-# define cond_init(x) { x = CreateEvent(0, FALSE, FALSE, 0); }
-# define cond_destroy(x) CloseHandle(x)
-# define cond_signal(x) SetEvent(x)
-# define cond_wait(x,y) { lock_release(y); WaitForSingleObject(x, INFINITE); lock_grab(y); }
-# define cond_timedwait(x,y,z) { lock_release(y); WaitForSingleObject(x,z); lock_grab(y); }
-# define thread_create(x,f,t) (x = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)f,t,0,dwWin9xKludge()))
-# define thread_join(x) { WaitForSingleObject(x, INFINITE); CloseHandle(x); }
-
-#endif
-
-#endif // #ifndef PLATFORM_H_INCLUDED
uint64_t nodes_searched() const;
void set_nodes_searched(uint64_t n);
bool is_draw() const;
- int rule50_count() const;
Score psq_score() const;
Value non_pawn_material(Color c) const;
// Position consistency check, for debugging
- bool pos_is_ok(int* step = NULL) const;
+ bool pos_is_ok(int* step = nullptr) const;
void flip();
private:
return gamePly;
}
-inline int Position::rule50_count() const {
- return st->rule50;
-}
-
inline uint64_t Position::nodes_searched() const {
return nodes;
}
#include "thread.h"
#include "tt.h"
#include "uci.h"
-#include "syzygy/tbprobe.h"
namespace Search {
StateStackPtr SetupStates;
}
-namespace Tablebases {
-
- int Cardinality;
- uint64_t Hits;
- bool RootInTB;
- bool UseRule50;
- Depth ProbeDepth;
- Value Score;
-}
-
-namespace TB = Tablebases;
-
using std::string;
using Eval::evaluate;
using namespace Search;
CheckInfo ci(pos);
const bool leaf = (depth == 2 * ONE_PLY);
- for (MoveList<LEGAL> it(pos); *it; ++it)
+ for (const ExtMove& ms : MoveList<LEGAL>(pos))
{
if (Root && depth <= ONE_PLY)
cnt = 1, nodes++;
else
{
- pos.do_move(*it, st, ci, pos.gives_check(*it, ci));
+ pos.do_move(ms.move, st, ci, pos.gives_check(ms.move, ci));
cnt = leaf ? MoveList<LEGAL>(pos).size() : perft<false>(pos, depth - ONE_PLY);
nodes += cnt;
- pos.undo_move(*it);
+ pos.undo_move(ms.move);
}
if (Root)
- sync_cout << UCI::move(*it, pos.is_chess960()) << ": " << cnt << sync_endl;
+ sync_cout << UCI::move(ms.move, pos.is_chess960()) << ": " << cnt << sync_endl;
}
return nodes;
}
DrawValue[ RootPos.side_to_move()] = VALUE_DRAW - Value(contempt);
DrawValue[~RootPos.side_to_move()] = VALUE_DRAW + Value(contempt);
- TB::Hits = 0;
- TB::RootInTB = false;
- TB::UseRule50 = Options["Syzygy50MoveRule"];
- TB::ProbeDepth = Options["SyzygyProbeDepth"] * ONE_PLY;
- TB::Cardinality = Options["SyzygyProbeLimit"];
-
- // Skip TB probing when no TB found: !TBLargest -> !TB::Cardinality
- if (TB::Cardinality > TB::MaxCardinality)
- {
- TB::Cardinality = TB::MaxCardinality;
- TB::ProbeDepth = DEPTH_ZERO;
- }
-
if (RootMoves.empty())
{
RootMoves.push_back(MOVE_NONE);
}
else
{
- if (TB::Cardinality >= RootPos.count<ALL_PIECES>(WHITE)
- + RootPos.count<ALL_PIECES>(BLACK))
- {
- // If the current root position is in the tablebases then RootMoves
- // contains only moves that preserve the draw or win.
- TB::RootInTB = Tablebases::root_probe(RootPos, RootMoves, TB::Score);
-
- if (TB::RootInTB)
- TB::Cardinality = 0; // Do not probe tablebases during the search
-
- else // If DTZ tables are missing, use WDL tables as a fallback
- {
- // Filter out moves that do not preserve a draw or win
- TB::RootInTB = Tablebases::root_probe_wdl(RootPos, RootMoves, TB::Score);
-
- // Only probe during search if winning
- if (TB::Score <= VALUE_DRAW)
- TB::Cardinality = 0;
- }
-
- if (TB::RootInTB)
- {
- TB::Hits = RootMoves.size();
-
- if (!TB::UseRule50)
- TB::Score = TB::Score > VALUE_DRAW ? VALUE_MATE - MAX_PLY - 1
- : TB::Score < VALUE_DRAW ? -VALUE_MATE + MAX_PLY + 1
- : VALUE_DRAW;
- }
- }
-
- for (size_t i = 0; i < Threads.size(); ++i)
- Threads[i]->maxPly = 0;
+ for (Thread* th : Threads)
+ th->maxPly = 0;
Threads.timer->run = true;
Threads.timer->notify_one(); // Wake up the recurring timer
// Save the last iteration's scores before first PV line is searched and
// all the move scores except the (new) PV are set to -VALUE_INFINITE.
- for (size_t i = 0; i < RootMoves.size(); ++i)
- RootMoves[i].previousScore = RootMoves[i].score;
+ for (RootMove& rm : RootMoves)
+ rm.previousScore = rm.score;
// MultiPV loop. We perform a full root search for each PV line
for (PVIdx = 0; PVIdx < std::min(multiPV, RootMoves.size()) && !Signals.stop; ++PVIdx)
splitPoint = ss->splitPoint;
bestMove = splitPoint->bestMove;
bestValue = splitPoint->bestValue;
- tte = NULL;
+ tte = nullptr;
ttHit = false;
ttMove = excludedMove = MOVE_NONE;
ttValue = VALUE_NONE;
// If ttMove is quiet, update killers, history, counter move and followup move on TT hit
if (ttValue >= beta && ttMove && !pos.capture_or_promotion(ttMove) && !inCheck)
- update_stats(pos, ss, ttMove, depth, NULL, 0);
+ update_stats(pos, ss, ttMove, depth, nullptr, 0);
return ttValue;
}
- // Step 4a. Tablebase probe
- if (!RootNode && TB::Cardinality)
- {
- int piecesCnt = pos.count<ALL_PIECES>(WHITE) + pos.count<ALL_PIECES>(BLACK);
-
- if ( piecesCnt <= TB::Cardinality
- && (piecesCnt < TB::Cardinality || depth >= TB::ProbeDepth)
- && pos.rule50_count() == 0)
- {
- int found, v = Tablebases::probe_wdl(pos, &found);
-
- if (found)
- {
- TB::Hits++;
-
- int drawScore = TB::UseRule50 ? 1 : 0;
-
- value = v < -drawScore ? -VALUE_MATE + MAX_PLY + ss->ply
- : v > drawScore ? VALUE_MATE - MAX_PLY - ss->ply
- : VALUE_DRAW + 2 * v * drawScore;
-
- tte->save(posKey, value_to_tt(value, ss->ply), BOUND_EXACT,
- std::min(DEPTH_MAX - ONE_PLY, depth + 6 * ONE_PLY),
- MOVE_NONE, VALUE_NONE, TT.generation());
-
- return value;
- }
- }
- }
-
// Step 5. Evaluate the position statically and update parent's gain statistics
if (inCheck)
{
}
if (PvNode)
- (ss+1)->pv = NULL;
+ (ss+1)->pv = nullptr;
extension = DEPTH_ZERO;
captureOrPromotion = pos.capture_or_promotion(move);
size_t uciPVSize = std::min((size_t)Options["MultiPV"], RootMoves.size());
int selDepth = 0;
- for (size_t i = 0; i < Threads.size(); ++i)
- if (Threads[i]->maxPly > selDepth)
- selDepth = Threads[i]->maxPly;
+ for (Thread* th : Threads)
+ if (th->maxPly > selDepth)
+ selDepth = th->maxPly;
for (size_t i = 0; i < uciPVSize; ++i)
{
Depth d = updated ? depth : depth - ONE_PLY;
Value v = updated ? RootMoves[i].score : RootMoves[i].previousScore;
- bool tb = TB::RootInTB && abs(v) < VALUE_MATE - MAX_PLY;
- v = tb ? TB::Score : v;
-
if (ss.rdbuf()->in_avail()) // Not at first line
ss << "\n";
<< " multipv " << i + 1
<< " score " << UCI::value(v);
- if (!tb && i == PVIdx)
+ if (i == PVIdx)
ss << (v >= beta ? " lowerbound" : v <= alpha ? " upperbound" : "");
ss << " nodes " << pos.nodes_searched()
<< " nps " << pos.nodes_searched() * 1000 / elapsed
- << " tbhits " << TB::Hits
<< " time " << elapsed
<< " pv";
// Pointer 'this_sp' is not null only if we are called from split(), and not
// at the thread creation. This means we are the split point's master.
- SplitPoint* this_sp = splitPointsSize ? activeSplitPoint : NULL;
+ SplitPoint* this_sp = splitPointsSize ? activeSplitPoint : nullptr;
assert(!this_sp || (this_sp->masterThread == this && searching));
sp->mutex.lock();
- assert(activePosition == NULL);
+ assert(activePosition == nullptr);
activePosition = &pos;
assert(searching);
searching = false;
- activePosition = NULL;
+ activePosition = nullptr;
sp->slavesMask.reset(idx);
sp->allSlavesSearching = false;
sp->nodes += pos.nodes_searched();
for (size_t i = 0; i < Threads.size(); ++i)
{
const int size = Threads[i]->splitPointsSize; // Local copy
- sp = size ? &Threads[i]->splitPoints[size - 1] : NULL;
+ sp = size ? &Threads[i]->splitPoints[size - 1] : nullptr;
if ( sp
&& sp->allSlavesSearching
}
// Grab the lock to avoid races with Thread::notify_one()
- mutex.lock();
+ std::unique_lock<std::mutex> lk(mutex);
// If we are master and all slaves have finished then exit idle_loop
if (this_sp && this_sp->slavesMask.none())
{
assert(!searching);
- mutex.unlock();
break;
}
// If we are not searching, wait for a condition to be signaled instead of
// wasting CPU time polling for work.
if (!searching && !exit)
- sleepCondition.wait(mutex);
-
- mutex.unlock();
+ sleepCondition.wait(lk);
}
}
// Loop across all split points and sum accumulated SplitPoint nodes plus
// all the currently active positions nodes.
- for (size_t i = 0; i < Threads.size(); ++i)
- for (int j = 0; j < Threads[i]->splitPointsSize; ++j)
+ for (Thread* th : Threads)
+ for (int i = 0; i < th->splitPointsSize; ++i)
{
- SplitPoint& sp = Threads[i]->splitPoints[j];
+ SplitPoint& sp = th->splitPoints[i];
sp.mutex.lock();
bool stop, stopOnPonderhit, firstRootMove, failedLowAtRoot;
};
-typedef std::auto_ptr<std::stack<StateInfo> > StateStackPtr;
+typedef std::unique_ptr<std::stack<StateInfo>> StateStackPtr;
extern volatile SignalsType Signals;
extern LimitsType Limits;
namespace {
- // start_routine() is the C function which is called when a new thread
- // is launched. It is a wrapper to the virtual function idle_loop().
-
- extern "C" { long start_routine(ThreadBase* th) { th->idle_loop(); return 0; } }
-
-
// Helpers to launch a thread after creation and joining before delete. Must be
// outside Thread c'tor and d'tor because the object must be fully initialized
// when start_routine (and hence virtual idle_loop) is called and when joining.
template<typename T> T* new_thread() {
T* th = new T();
- thread_create(th->handle, start_routine, th); // Will go to sleep
+ th->nativeThread = std::thread(&ThreadBase::idle_loop, th); // Will go to sleep
return th;
}
th->mutex.unlock();
th->notify_one();
- thread_join(th->handle); // Wait for thread termination
+ th->nativeThread.join(); // Wait for thread termination
delete th;
}
void ThreadBase::notify_one() {
- mutex.lock();
+ std::unique_lock<std::mutex>(this->mutex);
sleepCondition.notify_one();
- mutex.unlock();
}
void ThreadBase::wait_for(volatile const bool& condition) {
- mutex.lock();
- while (!condition) sleepCondition.wait(mutex);
- mutex.unlock();
+ std::unique_lock<std::mutex> lk(mutex);
+ sleepCondition.wait(lk, [&]{ return condition; });
}
searching = false;
maxPly = splitPointsSize = 0;
- activeSplitPoint = NULL;
- activePosition = NULL;
+ activeSplitPoint = nullptr;
+ activePosition = nullptr;
idx = Threads.size(); // Starts from 0
}
sp.allSlavesSearching = true; // Must be set under lock protection
++splitPointsSize;
activeSplitPoint = &sp;
- activePosition = NULL;
+ activePosition = nullptr;
Thread* slave;
- while ((slave = Threads.available_slave(this)) != NULL)
+ while ((slave = Threads.available_slave(this)) != nullptr)
{
sp.slavesMask.set(slave->idx);
slave->activeSplitPoint = &sp;
while (!exit)
{
- mutex.lock();
+ std::unique_lock<std::mutex> lk(mutex);
if (!exit)
- sleepCondition.wait_for(mutex, run ? Resolution : INT_MAX);
+ sleepCondition.wait_for(lk, std::chrono::milliseconds(run ? Resolution : INT_MAX));
- mutex.unlock();
+ lk.unlock();
if (run)
check_time();
while (!exit)
{
- mutex.lock();
+ std::unique_lock<std::mutex> lk(mutex);
thinking = false;
while (!thinking && !exit)
{
Threads.sleepCondition.notify_one(); // Wake up the UI thread if needed
- sleepCondition.wait(mutex);
+ sleepCondition.wait(lk);
}
- mutex.unlock();
+ lk.unlock();
if (!exit)
{
delete_thread(timer); // As first because check_time() accesses threads data
- for (iterator it = begin(); it != end(); ++it)
- delete_thread(*it);
+ for (Thread* th : *this)
+ delete_thread(th);
}
Thread* ThreadPool::available_slave(const Thread* master) const {
- for (const_iterator it = begin(); it != end(); ++it)
- if ((*it)->available_to(master))
- return *it;
+ for (Thread* th : *this)
+ if (th->available_to(master))
+ return th;
- return NULL;
+ return nullptr;
}
void ThreadPool::wait_for_think_finished() {
- MainThread* th = main();
- th->mutex.lock();
- while (th->thinking) sleepCondition.wait(th->mutex);
- th->mutex.unlock();
+ std::unique_lock<std::mutex> lk(main()->mutex);
+ sleepCondition.wait(lk, [&]{ return !main()->thinking; });
}
Limits = limits;
if (states.get()) // If we don't set a new position, preserve current state
{
- SetupStates = states; // Ownership transfer here
+ SetupStates = std::move(states); // Ownership transfer here
assert(!states.get());
}
- for (MoveList<LEGAL> it(pos); *it; ++it)
+ for (const ExtMove& ms : MoveList<LEGAL>(pos))
if ( limits.searchmoves.empty()
- || std::count(limits.searchmoves.begin(), limits.searchmoves.end(), *it))
- RootMoves.push_back(RootMove(*it));
+ || std::count(limits.searchmoves.begin(), limits.searchmoves.end(), ms.move))
+ RootMoves.push_back(RootMove(ms.move));
main()->thinking = true;
main()->notify_one(); // Starts main thread
#define THREAD_H_INCLUDED
#include <bitset>
+#include <condition_variable>
+#include <mutex>
+#include <thread>
#include <vector>
#include "material.h"
const int MAX_THREADS = 128;
const int MAX_SPLITPOINTS_PER_THREAD = 8;
-/// Mutex and ConditionVariable struct are wrappers of the low level locking
-/// machinery and are modeled after the corresponding C++11 classes.
-
-struct Mutex {
- Mutex() { lock_init(l); }
- ~Mutex() { lock_destroy(l); }
-
- void lock() { lock_grab(l); }
- void unlock() { lock_release(l); }
-
-private:
- friend struct ConditionVariable;
-
- Lock l;
-};
-
-struct ConditionVariable {
- ConditionVariable() { cond_init(c); }
- ~ConditionVariable() { cond_destroy(c); }
-
- void wait(Mutex& m) { cond_wait(c, m.l); }
- void wait_for(Mutex& m, int ms) { timed_wait(c, m.l, ms); }
- void notify_one() { cond_signal(c); }
-
-private:
- WaitCondition c;
-};
-
+struct Thread;
/// SplitPoint struct stores information shared by the threads searching in
/// parallel below the same split point. It is populated at splitting time.
SplitPoint* parentSplitPoint;
// Shared variable data
- Mutex mutex;
+ std::mutex mutex;
std::bitset<MAX_THREADS> slavesMask;
volatile bool allSlavesSearching;
volatile uint64_t nodes;
struct ThreadBase {
- ThreadBase() : handle(NativeHandle()), exit(false) {}
+ ThreadBase() : exit(false) {}
virtual ~ThreadBase() {}
virtual void idle_loop() = 0;
void notify_one();
void wait_for(volatile const bool& b);
- Mutex mutex;
- ConditionVariable sleepCondition;
- NativeHandle handle;
+ std::thread nativeThread;
+ std::mutex mutex;
+ std::condition_variable sleepCondition;
volatile bool exit;
};
void start_thinking(const Position&, const Search::LimitsType&, Search::StateStackPtr&);
Depth minimumSplitDepth;
- Mutex mutex;
- ConditionVariable sleepCondition;
+ std::mutex mutex;
+ std::condition_variable sleepCondition;
TimerThread* timer;
};
#include <cassert>
#include <cctype>
#include <climits>
+#include <cstdint>
#include <cstdlib>
-#include "platform.h"
+#if defined(_MSC_VER)
+// Disable some silly and noisy warning from MSVC compiler
+#pragma warning(disable: 4127) // Conditional expression is constant
+#pragma warning(disable: 4146) // Unary minus operator applied to unsigned type
+#pragma warning(disable: 4800) // Forcing value to bool 'true' or 'false'
+#endif
/// Predefined macros hell:
///
BOUND_EXACT = BOUND_UPPER | BOUND_LOWER
};
-enum Value {
+enum Value : int {
VALUE_ZERO = 0,
VALUE_DRAW = 0,
VALUE_KNOWN_WIN = 10000,
VALUE_INFINITE = 32001,
VALUE_NONE = 32002,
- VALUE_MATE_IN_MAX_PLY = VALUE_MATE - 2 * MAX_PLY,
- VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY,
-
- VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
- VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN,
+ VALUE_MATE_IN_MAX_PLY = VALUE_MATE - MAX_PLY,
+ VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + MAX_PLY,
PawnValueMg = 198, PawnValueEg = 258,
KnightValueMg = 817, KnightValueEg = 846,
};
-/// Score enum stores a middlegame and an endgame value in a single integer.
-/// The least significant 16 bits are used to store the endgame value and
-/// the upper 16 bits are used to store the middlegame value. The compiler
-/// is free to choose the enum type as long as it can store the data, so we
-/// ensure that Score is an integer type by assigning some big int values.
-enum Score {
- SCORE_ZERO,
- SCORE_ENSURE_INTEGER_SIZE_P = INT_MAX,
- SCORE_ENSURE_INTEGER_SIZE_N = INT_MIN
-};
+/// Score enum stores a middlegame and an endgame value in a single integer
+/// (enum). The least significant 16 bits are used to store the endgame value
+/// and the upper 16 bits are used to store the middlegame value.
+enum Score : int { SCORE_ZERO };
inline Score make_score(int mg, int eg) {
return Score((mg << 16) + eg);
stringstream ss;
- if (abs(v) < VALUE_MATE - MAX_PLY)
+ if (abs(v) < VALUE_MATE_IN_MAX_PLY)
ss << "cp " << v * 100 / PawnValueEg;
else
ss << "mate " << (v > 0 ? VALUE_MATE - v + 1 : -VALUE_MATE - v) / 2;
if (str.length() == 5) // Junior could send promotion piece in uppercase
str[4] = char(tolower(str[4]));
- for (MoveList<LEGAL> it(pos); *it; ++it)
- if (str == UCI::move(*it, pos.is_chess960()))
- return *it;
+ for (const ExtMove& ms : MoveList<LEGAL>(pos))
+ if (str == UCI::move(ms.move, pos.is_chess960()))
+ return ms.move;
return MOVE_NONE;
}
typedef void (*OnChange)(const Option&);
public:
- Option(OnChange = NULL);
- Option(bool v, OnChange = NULL);
- Option(const char* v, OnChange = NULL);
- Option(int v, int min, int max, OnChange = NULL);
+ Option(OnChange = nullptr);
+ Option(bool v, OnChange = nullptr);
+ Option(const char* v, OnChange = nullptr);
+ Option(int v, int min, int max, OnChange = nullptr);
Option& operator=(const std::string&);
void operator<<(const Option&);
#include <algorithm>
#include <cassert>
-#include <cstdlib>
#include <sstream>
#include "misc.h"
#include "thread.h"
#include "tt.h"
#include "uci.h"
-#include "syzygy/tbprobe.h"
using std::string;
void on_hash_size(const Option& o) { TT.resize(o); }
void on_logger(const Option& o) { start_logger(o); }
void on_threads(const Option&) { Threads.read_uci_options(); }
-void on_tb_path(const Option& o) { Tablebases::init(o); }
/// Our case insensitive less() function as required by UCI protocol
-bool ci_less(char c1, char c2) { return tolower(c1) < tolower(c2); }
-
bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
- return std::lexicographical_compare(s1.begin(), s1.end(), s2.begin(), s2.end(), ci_less);
+
+ return std::lexicographical_compare(s1.begin(), s1.end(), s2.begin(), s2.end(),
+ [](char c1, char c2) { return tolower(c1) < tolower(c2); });
}
o["Minimum Thinking Time"] << Option(20, 0, 5000);
o["Slow Mover"] << Option(80, 10, 1000);
o["UCI_Chess960"] << Option(false);
- o["SyzygyPath"] << Option("<empty>", on_tb_path);
- o["SyzygyProbeDepth"] << Option(1, 1, 100);
- o["Syzygy50MoveRule"] << Option(true);
- o["SyzygyProbeLimit"] << Option(6, 0, 6);
}
std::ostream& operator<<(std::ostream& os, const OptionsMap& om) {
for (size_t idx = 0; idx < om.size(); ++idx)
- for (OptionsMap::const_iterator it = om.begin(); it != om.end(); ++it)
- if (it->second.idx == idx)
+ for (auto it : om)
+ if (it.second.idx == idx)
{
- const Option& o = it->second;
- os << "\noption name " << it->first << " type " << o.type;
+ const Option& o = it.second;
+ os << "\noption name " << it.first << " type " << o.type;
if (o.type != "button")
os << " default " << o.defaultValue;
break;
}
+
return os;
}
{}
Option::Option(int v, int minv, int maxv, OnChange f) : type("spin"), min(minv), max(maxv), on_change(f)
-{ std::ostringstream ss; ss << v; defaultValue = currentValue = ss.str(); }
-
+{ defaultValue = currentValue = std::to_string(v); }
Option::operator int() const {
assert(type == "check" || type == "spin");
- return (type == "spin" ? atoi(currentValue.c_str()) : currentValue == "true");
+ return (type == "spin" ? stoi(currentValue) : currentValue == "true");
}
Option::operator std::string() const {
if ( (type != "button" && v.empty())
|| (type == "check" && v != "true" && v != "false")
- || (type == "spin" && (atoi(v.c_str()) < min || atoi(v.c_str()) > max)))
+ || (type == "spin" && (stoi(v) < min || stoi(v) > max)))
return *this;
if (type != "button")
projects / stockfish / commitdiff