X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.h;h=abf7221d8a33bbbe9f22a66db31e4995932d0c3c;hp=62d3fe9ed9f4055eadd1800679bee69f9f25b274;hb=bb3427ca85bdb20b4c8af12b63f635d03c5e9146;hpb=e1ed67aacbe7fb4b462b9141d3137bed0a3ea70b diff --git a/src/search.h b/src/search.h index 62d3fe9e..abf7221d 100644 --- a/src/search.h +++ b/src/search.h @@ -1,7 +1,7 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2009 Marco Costalba + Copyright (C) 2008-2010 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 @@ -17,35 +17,16 @@ along with this program. If not, see . */ - #if !defined(SEARCH_H_INCLUDED) #define SEARCH_H_INCLUDED -//// -//// Includes -//// - -#include "depth.h" -#include "history.h" -#include "lock.h" -#include "movegen.h" -#include "position.h" -#include "tt.h" -#include "value.h" - - -//// -//// Constants -//// - -const int PLY_MAX = 100; -const int PLY_MAX_PLUS_2 = 102; -const int KILLER_MAX = 2; +#include "move.h" +#include "types.h" +#include -//// -//// Types -//// +class Position; +struct SplitPoint; /// The SearchStack struct keeps track of the information we need to remember /// from nodes shallower and deeper in the tree during the search. Each @@ -53,40 +34,47 @@ const int KILLER_MAX = 2; /// current ply. struct SearchStack { - Move pv[PLY_MAX]; + SplitPoint* sp; + int ply; Move currentMove; - Move mateKiller; - Move threatMove; - Move killers[KILLER_MAX]; + Move excludedMove; + Move bestMove; + Move killers[2]; Depth reduction; - - void init(int ply); - void initKillers(); + Value eval; + Value evalMargin; + int skipNullMove; }; +namespace Search { + +/// The SearchLimits struct stores information sent by GUI about available time +/// to search the current move, maximum depth/time, if we are in analysis mode +/// or if we have to ponder while is our opponent's side to move. -//// -//// Global variables -//// +struct LimitsType { -extern TranspositionTable TT; -extern int ActiveThreads; -extern Lock SMPLock; + LimitsType() { memset(this, 0, sizeof(LimitsType)); } + bool useTimeManagement() const { return !(maxTime | maxDepth | maxNodes | infinite); } -// Perhaps better to make H local, and pass as parameter to MovePicker? -extern History H; + int time, increment, movesToGo, maxTime, maxDepth, maxNodes, infinite, ponder; +}; + +struct SignalsType { + bool stopOnPonderhit, firstRootMove, stop, failedLowAtRoot; +}; +extern volatile SignalsType Signals; +extern LimitsType Limits; +extern std::vector RootMoves; +extern Position RootPosition; -//// -//// Prototypes -//// +extern void init(); +extern int64_t perft(Position& pos, Depth depth); +extern void think(); -extern void init_threads(); -extern void stop_threads(); -extern bool think(const Position &pos, bool infinite, bool ponder, int side_to_move, - int time[], int increment[], int movesToGo, int maxDepth, - int maxNodes, int maxTime, Move searchMoves[]); -extern int64_t nodes_searched(); +} +extern void do_timer_event(); #endif // !defined(SEARCH_H_INCLUDED)