X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.h;h=d06291ebd61526a1a4b672833489ba2979d5c185;hp=3800928b76a3eda5e4f8455f5797a9e790ea25fe;hb=dee878082960be198fdb1493940b3d8a2be0bd58;hpb=79b57dd4ca54bcb80a50c8fadadc7e64269fb756 diff --git a/src/thread.h b/src/thread.h index 3800928b..d06291eb 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 @@ -38,8 +38,8 @@ //// Constants and variables //// -const int MAX_THREADS = 8; -const int ACTIVE_SPLIT_POINTS_MAX = 8; +const int MAX_THREADS = 16; +const int MAX_ACTIVE_SPLIT_POINTS = 8; //// @@ -51,10 +51,12 @@ struct SplitPoint { // Const data after splitPoint has been setup SplitPoint* parent; const Position* pos; - bool pvNode; Depth depth; - Value beta, futilityValue; - int ply, master, slaves[MAX_THREADS]; + bool pvNode, mateThreat; + Value beta; + int ply; + int master; + Move threatMove; SearchStack sstack[MAX_THREADS][PLY_MAX_PLUS_2]; // Const pointers to shared data @@ -63,33 +65,31 @@ struct SplitPoint { // 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 bool printCurrentLineRequest; 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]; };