X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fthread.h;h=556ebc59a27eb9c5f8b89ef2e9ac1cba7c024330;hb=b39a24ecca28620239818ca393a46a47f9d42824;hp=d12ec845c01f4bc4a288bd6bfe076b8652ca9b5b;hpb=0ff91e16da5d66d7b47274203d460ff0144f1e39;p=stockfish

diff --git a/src/thread.h b/src/thread.h
index d12ec845..556ebc59 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -26,6 +26,8 @@
 //// Includes
 ////
 
+#include <cstring>
+
 #include "lock.h"
 #include "movepick.h"
 #include "position.h"
@@ -36,7 +38,7 @@
 //// Constants and variables
 ////
 
-const int THREAD_MAX = 8;
+const int MAX_THREADS = 8;
 const int ACTIVE_SPLIT_POINTS_MAX = 8;
 
 
@@ -47,13 +49,14 @@ const int ACTIVE_SPLIT_POINTS_MAX = 8;
 struct SplitPoint {
   SplitPoint *parent;
   const Position* pos;
-  SearchStack sstack[THREAD_MAX][PLY_MAX_PLUS_2];
+  SearchStack sstack[MAX_THREADS][PLY_MAX_PLUS_2];
   SearchStack *parentSstack;
   int ply;
   Depth depth;
-  volatile Value alpha, beta, bestValue, futilityValue;
+  volatile Value alpha, beta, bestValue;
+  Value futilityValue;
   bool pvNode;
-  int master, slaves[THREAD_MAX];
+  int master, slaves[MAX_THREADS];
   Lock lock;
   MovePicker *mp;
   volatile int moves;
@@ -61,18 +64,26 @@ struct SplitPoint {
   bool finished;
 };
 
+// ThreadState type is used to represent thread's current state
+
+enum ThreadState
+{
+  THREAD_SEARCHING,     // thread is performing work
+  THREAD_AVAILABLE,     // thread is polling for work
+  THREAD_SLEEPING,      // we are not thinking, so thread is sleeping
+  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;
-  int activeSplitPoints;
+  volatile int activeSplitPoints;
   uint64_t nodes;
   uint64_t betaCutOffs[2];
-  bool failHighPly1;
-  volatile bool stop;
-  volatile bool running;
-  volatile bool idle;
-  volatile bool workIsWaiting;
-  volatile bool printCurrentLine;
+  volatile bool stopRequest;
+  volatile bool printCurrentLineRequest;
+  volatile ThreadState state;
   unsigned char pad[64]; // set some distance among local data for each thread
 };