Move struct RootMove to Search namespace

[stockfish] / src / thread.h

diff --git a/src/thread.h b/src/thread.h
index 8d3fd615bcb3fa089c0d072075cb3299b37a01a0..cc490639ed4f4c8bb23a400166a840fa10a9ec86 100644 (file)
--- 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) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2012 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
@@ -21,12 +21,14 @@
 #define THREAD_H_INCLUDED
 
 #include <cstring>
+#include <set>
 
 #include "lock.h"
 #include "material.h"
 #include "movepick.h"
 #include "pawns.h"
 #include "position.h"
+#include "search.h"
 
 const int MAX_THREADS = 32;
 const int MAX_ACTIVE_SPLIT_POINTS = 8;
@@ -45,7 +47,7 @@ struct SplitPoint {
 
   // Const pointers to shared data
   MovePicker* mp;
-  SearchStack* ss;
+  Search::Stack* ss;
 
   // Shared data
   Lock lock;
@@ -58,23 +60,19 @@ struct SplitPoint {
 };
 
 
-/// Thread struct is used to keep together all the thread related stuff like locks,
-/// state and especially split points. We also use per-thread pawn and material hash
-/// tables so that once we get a pointer to an entry its life time is unlimited and
-/// we don't have to care about someone changing the entry under our feet.
+/// Thread struct keeps together all the thread related stuff like locks, state
+/// and especially split points. We also use per-thread pawn and material hash
+/// tables so that once we get a pointer to an entry its life time is unlimited
+/// and we don't have to care about someone changing the entry under our feet.
 
 struct Thread {
 
-  enum ThreadState
-  {
-    AVAILABLE,     // Thread is waiting for work
-    SEARCHING      // Thread is performing work
-  };
-
   void wake_up();
   bool cutoff_occurred() const;
   bool is_available_to(int master) const;
   void idle_loop(SplitPoint* sp);
+  void main_loop();
+  void timer_loop();
 
   SplitPoint splitPoints[MAX_ACTIVE_SPLIT_POINTS];
   MaterialInfoTable materialTable;
@@ -83,9 +81,9 @@ struct Thread {
   int maxPly;
   Lock sleepLock;
   WaitCondition sleepCond;
-  volatile ThreadState state;
   SplitPoint* volatile splitPoint;
   volatile int activeSplitPoints;
+  volatile bool is_searching;
   volatile bool do_sleep;
   volatile bool do_terminate;
 
@@ -97,9 +95,9 @@ struct Thread {
 };
 
 
-/// ThreadsManager class is used to handle all the threads related stuff like init,
-/// starting, parking and, the most important, launching a slave thread at a split
-/// point. All the access to shared thread data is done through this class.
+/// ThreadsManager class handles all the threads related stuff like init, starting,
+/// parking and, the most important, launching a slave thread at a split point.
+/// All the access to shared thread data is done through this class.
 
 class ThreadsManager {
   /* As long as the single ThreadsManager object is defined as a global we don't
@@ -118,17 +116,26 @@ public:
   void set_size(int cnt);
   void read_uci_options();
   bool available_slave_exists(int master) const;
+  bool split_point_finished(SplitPoint* sp) const;
+  void set_timer(int msec);
+  void wait_for_stop_or_ponderhit();
+  void stop_thinking();
+  void start_thinking(const Position& pos, const Search::LimitsType& limits,
+                      const std::set<Move>& = std::set<Move>(), bool async = false);
 
   template <bool Fake>
-  Value split(Position& pos, SearchStack* ss, Value alpha, Value beta, Value bestValue,
+  Value split(Position& pos, Search::Stack* ss, Value alpha, Value beta, Value bestValue,
               Depth depth, Move threatMove, int moveCount, MovePicker* mp, int nodeType);
 private:
-  Thread threads[MAX_THREADS];
+  friend struct Thread;
+
+  Thread threads[MAX_THREADS + 1]; // Last one is used as a timer
   Lock threadsLock;
   Depth minimumSplitDepth;
   int maxThreadsPerSplitPoint;
   int activeThreads;
   bool useSleepingThreads;
+  WaitCondition sleepCond;
 };
 
 extern ThreadsManager Threads;