UciProtocol Class Reference

Main engine controller implementing the UCI protocol. More...

#include <UCI.h>

Collaboration diagram for UciProtocol:

Public Member Functions
	UciProtocol (const std::string &modelPath, bool useSimpleEval=false, const std::string &tbPath="", const std::string &bookPath="", const std::string &bookPath2="", int evalThreads=0)
	Constructs the UCI Protocol handler.
	~UciProtocol ()
void	loop ()
	The main blocking loop that reads commands from standard input.
void	resizeHash (size_t mb)
void	updateThreads (int numThreads)
void	reinitEngine ()
void	updateEvalContexts ()
void	initTablebase ()
void	loadBooks ()
void	setTTDisabled (bool disable)
void	setPendingTTLoadFile (const std::string &file)

Private Member Functions
void	handleUci ()
void	handleIsReady ()
void	handleSetOption (std::istringstream &is)
void	handleUciNewGame ()
void	handlePosition (std::istringstream &is)
void	handleGo (std::istringstream &is)
void	handlePonderHit ()
void	handleStop ()
void	handleQuit ()
void	handleEval ()
void	initializeEngine ()
void	sendInfo (int depth, int score, int nodes, int nps, const std::vector< Move > &pv, const Board &board)
void	sendBestMove (Move move, Move ponderMove=Move(Move::NO_MOVE))
void	saveTTSnapshotForMove (const std::string &moveUci)

Static Private Member Functions
static std::string	formatScore (int score)
static std::string	sanitizeForFilename (const std::string &value)

Private Attributes
std::vector< std::unique_ptr< Evaluator > >	evaluators_
std::vector< std::unique_ptr< IEvaluator > >	evalCtxs_
TranspositionTable	tt_
std::unique_ptr< PolyglotBook >	book_
std::vector< std::thread >	threadPool_
std::shared_ptr< SearchSharedData >	searchData_
std::unique_ptr< ISearch >	searcher_
std::thread	searchThread_
std::atomic< bool >	searchRunning_ {false}
std::atomic< bool >	searchMayRunForever_ {false}
std::atomic< bool >	pondering_ {false}
std::atomic< bool >	ponderResultReady_ {false}
Move	ponderResultMove_ {}
Move	ponderMove_ {}
	Expected opponent reply (2nd move in PV).
SearchParams	ponderParams_ {}
	Time params from go ponder for ponderhit use.
std::mutex	ponderMutex_
Board	currentBoard_
UciOptions	options_
std::unique_ptr< PolyglotBook >	book2_
int	consecutiveBookMisses_ = 0
std::string	pendingTTLoadFile_
uint64_t	ttSnapshotCounter_ = 0
uint64_t	searchBaseFullRebuilds_ = 0
uint64_t	searchBaseTbHits_ = 0
uint64_t	searchBaseTtHits_ = 0

Static Private Attributes
static constexpr const char *	ENGINE_NAME = "io-chess-engine"
static constexpr const char *	ENGINE_AUTHOR = "Alessandro Gobbetti!"
static constexpr int	MAX_BOOK_MISSES = 3

Detailed Description

Main engine controller implementing the UCI protocol.

Orchestrates parsing input from standard input, managing engine options, starting/stopping search threads, and reporting results to standard output.

Constructor & Destructor Documentation

UciProtocol()

UciProtocol::UciProtocol ( const std::string & modelPath, bool useSimpleEval = false, const std::string & tbPath = "", const std::string & bookPath = "", const std::string & bookPath2 = "", int evalThreads = 0 )

explicit

Constructs the UCI Protocol handler.

Here is the call graph for this function:

~UciProtocol()

UciProtocol::~UciProtocol

(

)

Member Function Documentation

formatScore()

std::string UciProtocol::formatScore ( int score )

staticprivate

Here is the caller graph for this function:

handleEval()

void UciProtocol::handleEval ( )

private

Here is the call graph for this function:

Here is the caller graph for this function:

handleGo()

void UciProtocol::handleGo ( std::istringstream & is )

private

Here is the call graph for this function:

Here is the caller graph for this function:

handleIsReady()

void UciProtocol::handleIsReady ( )

private

Here is the call graph for this function:

Here is the caller graph for this function:

handlePonderHit()

void UciProtocol::handlePonderHit ( )

private

Here is the call graph for this function:

Here is the caller graph for this function:

handlePosition()

void UciProtocol::handlePosition ( std::istringstream & is )

private

Here is the call graph for this function:

Here is the caller graph for this function:

handleQuit()

void UciProtocol::handleQuit ( )

private

Here is the call graph for this function:

Here is the caller graph for this function:

handleSetOption()

void UciProtocol::handleSetOption ( std::istringstream & is )

private

Here is the caller graph for this function:

handleStop()

void UciProtocol::handleStop ( )

private

Here is the caller graph for this function:

handleUci()

void UciProtocol::handleUci ( )

private

Here is the caller graph for this function:

handleUciNewGame()

void UciProtocol::handleUciNewGame ( )

private

Here is the caller graph for this function:

initializeEngine()

void UciProtocol::initializeEngine ( )

private

Here is the caller graph for this function:

initTablebase()

void UciProtocol::initTablebase

(

)

Here is the call graph for this function:

Here is the caller graph for this function:

loadBooks()

void UciProtocol::loadBooks

(

)

Here is the caller graph for this function:

loop()

void UciProtocol::loop

(

)

The main blocking loop that reads commands from standard input.

Here is the call graph for this function:

Here is the caller graph for this function:

reinitEngine()

void UciProtocol::reinitEngine

(

)

Here is the call graph for this function:

Here is the caller graph for this function:

resizeHash()

void UciProtocol::resizeHash

(

size_t

mb

)

Here is the caller graph for this function:

sanitizeForFilename()

std::string UciProtocol::sanitizeForFilename ( const std::string & value )

staticprivate

Here is the caller graph for this function:

saveTTSnapshotForMove()

void UciProtocol::saveTTSnapshotForMove ( const std::string & moveUci )

private

Here is the call graph for this function:

Here is the caller graph for this function:

sendBestMove()

void UciProtocol::sendBestMove ( Move move, Move ponderMove = Move(Move::NO_MOVE) )

private

Here is the caller graph for this function:

sendInfo()

void UciProtocol::sendInfo ( int depth, int score, int nodes, int nps, const std::vector< Move > & pv, const Board & board )

private

Here is the call graph for this function:

Here is the caller graph for this function:

setPendingTTLoadFile()

void UciProtocol::setPendingTTLoadFile ( const std::string & file )

inline

Here is the caller graph for this function:

setTTDisabled()

void UciProtocol::setTTDisabled

(

bool

disable

)

Here is the caller graph for this function:

updateEvalContexts()

void UciProtocol::updateEvalContexts

(

)

Here is the caller graph for this function:

updateThreads()

void UciProtocol::updateThreads

(

int

numThreads

)

Here is the caller graph for this function:

Member Data Documentation

book2_

std::unique_ptr<PolyglotBook> UciProtocol::book2_

private

book_

std::unique_ptr<PolyglotBook> UciProtocol::book_

private

consecutiveBookMisses_

int UciProtocol::consecutiveBookMisses_ = 0

private

currentBoard_

Board UciProtocol::currentBoard_

private

ENGINE_AUTHOR

const char* UciProtocol::ENGINE_AUTHOR = "Alessandro Gobbetti!"

staticconstexprprivate

ENGINE_NAME

const char* UciProtocol::ENGINE_NAME = "io-chess-engine"

staticconstexprprivate

evalCtxs_

std::vector<std::unique_ptr<IEvaluator> > UciProtocol::evalCtxs_

private

evaluators_

std::vector<std::unique_ptr<Evaluator> > UciProtocol::evaluators_

private

MAX_BOOK_MISSES

int UciProtocol::MAX_BOOK_MISSES = 3

staticconstexprprivate

options_

UciOptions UciProtocol::options_

private

pendingTTLoadFile_

std::string UciProtocol::pendingTTLoadFile_

private

pondering_

std::atomic<bool> UciProtocol::pondering_ {false}

private

ponderMove_

Move UciProtocol::ponderMove_ {}

private

Expected opponent reply (2nd move in PV).

ponderMutex_

std::mutex UciProtocol::ponderMutex_

private

ponderParams_

SearchParams UciProtocol::ponderParams_ {}

private

Time params from go ponder for ponderhit use.

ponderResultMove_

Move UciProtocol::ponderResultMove_ {}

private

ponderResultReady_

std::atomic<bool> UciProtocol::ponderResultReady_ {false}

private

searchBaseFullRebuilds_

uint64_t UciProtocol::searchBaseFullRebuilds_ = 0

private

searchBaseTbHits_

uint64_t UciProtocol::searchBaseTbHits_ = 0

private

searchBaseTtHits_

uint64_t UciProtocol::searchBaseTtHits_ = 0

private

searchData_

std::shared_ptr<SearchSharedData> UciProtocol::searchData_

private

searcher_

std::unique_ptr<ISearch> UciProtocol::searcher_

private

searchMayRunForever_

std::atomic<bool> UciProtocol::searchMayRunForever_ {false}

private

searchRunning_

std::atomic<bool> UciProtocol::searchRunning_ {false}

private

searchThread_

std::thread UciProtocol::searchThread_

private

threadPool_

std::vector<std::thread> UciProtocol::threadPool_

private

tt_

TranspositionTable UciProtocol::tt_

private

ttSnapshotCounter_

uint64_t UciProtocol::ttSnapshotCounter_ = 0

private

---

The documentation for this class was generated from the following files:

• engine/src/uci/UCI.h
• engine/src/uci/UCI.cpp