X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.h;h=463739fe2eff7c39617ad66ee59953214731676a;hp=0348ed82cb722e68035d2ec7e85911db860d5562;hb=c980163316d48ff304bfb253089c7d474d090b12;hpb=7bcd97933a20b649964bf96eb840a6190e777428 diff --git a/src/thread.h b/src/thread.h index 0348ed82..463739fe 100644 --- a/src/thread.h +++ b/src/thread.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 @@ -17,15 +17,9 @@ along with this program. If not, see . */ - #if !defined(THREAD_H_INCLUDED) #define THREAD_H_INCLUDED - -//// -//// Includes -//// - #include #include "lock.h" @@ -33,63 +27,51 @@ #include "position.h" #include "search.h" - -//// -//// Constants and variables -//// - -const int MAX_THREADS = 8; -const int ACTIVE_SPLIT_POINTS_MAX = 8; - - -//// -//// Types -//// +const int MAX_THREADS = 32; +const int MAX_ACTIVE_SPLIT_POINTS = 8; struct SplitPoint { // Const data after splitPoint has been setup SplitPoint* parent; const Position* pos; - bool pvNode; Depth depth; + bool pvNode, mateThreat; Value beta; - int ply, master, slaves[MAX_THREADS]; - SearchStack sstack[MAX_THREADS][PLY_MAX_PLUS_2]; + int ply; + int master; + Move threatMove; // Const pointers to shared data MovePicker* mp; - SearchStack* parentSstack; + SearchStack* ss; // Shared data Lock lock; + volatile int64_t nodes; volatile Value alpha; volatile Value bestValue; - volatile int moves; - volatile int cpus; - volatile bool stopRequest; + volatile int moveCount; + volatile bool betaCutoff; + volatile int slaves[MAX_THREADS]; }; // ThreadState type is used to represent thread's current state - enum ThreadState { + THREAD_INITIALIZING, // thread is initializing itself THREAD_SEARCHING, // thread is performing work - THREAD_AVAILABLE, // thread is polling for work - THREAD_SLEEPING, // we are not thinking, so thread is sleeping + THREAD_AVAILABLE, // thread is waiting for work THREAD_BOOKED, // other thread (master) has booked us as a slave THREAD_WORKISWAITING, // master has ordered us to start THREAD_TERMINATED // we are quitting and thread is terminated }; struct Thread { - SplitPoint* splitPoint; - volatile int activeSplitPoints; - uint64_t nodes; - uint64_t betaCutOffs[2]; volatile ThreadState state; - unsigned char pad[64]; // set some distance among local data for each thread + SplitPoint* volatile splitPoint; + volatile int activeSplitPoints; + SplitPoint splitPoints[MAX_ACTIVE_SPLIT_POINTS]; }; - #endif // !defined(THREAD_H_INCLUDED)