Cache line aligned TT

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index 0774557e000a421aa63a5958368f0fb04237960c..dae86db310d6d80bc715e99c7aafd9ca482225e4 100644 (file)
--- a/src/types.h
+++ b/src/types.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) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2013 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
@@ -35,6 +35,7 @@
 ///               | only in 64-bit mode. For compiling requires hardware with
 ///               | popcnt support.
 
+#include <cassert>
 #include <cctype>
 #include <climits>
 #include <cstdlib>
@@ -55,10 +56,11 @@
 #   include <xmmintrin.h> // Intel and Microsoft header for _mm_prefetch()
 #  endif
 
+#define CACHE_LINE_SIZE 64
 #if defined(_MSC_VER) || defined(__INTEL_COMPILER)
-#  define CACHE_LINE_ALIGNMENT __declspec(align(64))
+#  define CACHE_LINE_ALIGNMENT __declspec(align(CACHE_LINE_SIZE))
 #else
-#  define CACHE_LINE_ALIGNMENT  __attribute__ ((aligned(64)))
+#  define CACHE_LINE_ALIGNMENT  __attribute__ ((aligned(CACHE_LINE_SIZE)))
 #endif
 
 #if defined(_MSC_VER)
@@ -136,12 +138,20 @@ enum CastleRight {  // Defined as in PolyGlot book hash key
   WHITE_OOO    = 2,
   BLACK_OO     = 4,
   BLACK_OOO    = 8,
-  ALL_CASTLES  = 15
+  ALL_CASTLES  = 15,
+  CASTLE_RIGHT_NB = 16
 };
 
 enum CastlingSide {
   KING_SIDE,
-  QUEEN_SIDE
+  QUEEN_SIDE,
+  CASTLING_SIDE_NB = 2
+};
+
+enum Phase {
+  PHASE_ENDGAME = 0,
+  PHASE_MIDGAME = 128,
+  MG = 0, EG = 1, PHASE_NB = 2
 };
 
 enum ScaleFactor {
@@ -172,8 +182,6 @@ enum Value {
   VALUE_ENSURE_INTEGER_SIZE_P = INT_MAX,
   VALUE_ENSURE_INTEGER_SIZE_N = INT_MIN,
 
-  Mg = 0, Eg = 1,
-
   PawnValueMg   = 198,   PawnValueEg   = 258,
   KnightValueMg = 817,   KnightValueEg = 846,
   BishopValueMg = 836,   BishopValueEg = 857,
@@ -183,17 +191,19 @@ enum Value {
 
 enum PieceType {
   NO_PIECE_TYPE = 0, ALL_PIECES = 0,
-  PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6
+  PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6,
+  PIECE_TYPE_NB = 8
 };
 
 enum Piece {
-  NO_PIECE = 16, // color_of(NO_PIECE) == NO_COLOR
+  NO_PIECE = 0,
   W_PAWN = 1, W_KNIGHT =  2, W_BISHOP =  3, W_ROOK =  4, W_QUEEN =  5, W_KING =  6,
-  B_PAWN = 9, B_KNIGHT = 10, B_BISHOP = 11, B_ROOK = 12, B_QUEEN = 13, B_KING = 14
+  B_PAWN = 9, B_KNIGHT = 10, B_BISHOP = 11, B_ROOK = 12, B_QUEEN = 13, B_KING = 14,
+  PIECE_NB = 16
 };
 
 enum Color {
-  WHITE, BLACK, NO_COLOR
+  WHITE, BLACK, NO_COLOR, COLOR_NB = 2
 };
 
 enum Depth {
@@ -219,6 +229,8 @@ enum Square {
   SQ_A8, SQ_B8, SQ_C8, SQ_D8, SQ_E8, SQ_F8, SQ_G8, SQ_H8,
   SQ_NONE,
 
+  SQUARE_NB = 64,
+
   DELTA_N =  8,
   DELTA_E =  1,
   DELTA_S = -8,
@@ -233,11 +245,11 @@ enum Square {
 };
 
 enum File {
-  FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H
+  FILE_A, FILE_B, FILE_C, FILE_D, FILE_E, FILE_F, FILE_G, FILE_H, FILE_NB = 8
 };
 
 enum Rank {
-  RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8
+  RANK_1, RANK_2, RANK_3, RANK_4, RANK_5, RANK_6, RANK_7, RANK_8, RANK_NB = 8
 };
 
 
@@ -324,9 +336,9 @@ inline Score apply_weight(Score v, Score w) {
 
 namespace Zobrist {
 
-  extern Key psq[2][8][64]; // [color][pieceType][square / piece count]
-  extern Key enpassant[8];  // [file]
-  extern Key castle[16];    // [castleRight]
+  extern Key psq[COLOR_NB][PIECE_TYPE_NB][SQUARE_NB];
+  extern Key enpassant[FILE_NB];
+  extern Key castle[CASTLE_RIGHT_NB];
   extern Key side;
   extern Key exclusion;
 
@@ -335,9 +347,9 @@ namespace Zobrist {
 
 CACHE_LINE_ALIGNMENT
 
-extern Score pieceSquareTable[16][64]; // [piece][square]
-extern Value PieceValue[2][18];        // [Mg / Eg][piece / pieceType]
-extern int SquareDistance[64][64];     // [square][square]
+extern Score pieceSquareTable[PIECE_NB][SQUARE_NB];
+extern Value PieceValue[PHASE_NB][PIECE_NB];
+extern int SquareDistance[SQUARE_NB][SQUARE_NB];
 
 struct MoveStack {
   Move move;
@@ -381,6 +393,7 @@ inline PieceType type_of(Piece p)  {
 }
 
 inline Color color_of(Piece p) {
+  assert(p != NO_PIECE);
   return Color(p >> 3);
 }
 
@@ -429,12 +442,12 @@ inline int square_distance(Square s1, Square s2) {
   return SquareDistance[s1][s2];
 }
 
-inline char file_to_char(File f) {
-  return char(f - FILE_A + int('a'));
+inline char file_to_char(File f, bool tolower = true) {
+  return char(f - FILE_A + (tolower ? 'a' : 'A'));
 }
 
 inline char rank_to_char(Rank r) {
-  return char(r - RANK_1 + int('1'));
+  return char(r - RANK_1 + '1');
 }
 
 inline Square pawn_push(Color c) {
@@ -463,7 +476,7 @@ inline Move make_move(Square from, Square to) {
 
 template<MoveType T>
 inline Move make(Square from, Square to, PieceType pt = KNIGHT) {
-  return Move(to | (from << 6) | T | ((pt - KNIGHT) << 12)) ;
+  return Move(to | (from << 6) | T | ((pt - KNIGHT) << 12));
 }
 
 inline bool is_ok(Move m) {
@@ -477,21 +490,4 @@ inline const std::string square_to_string(Square s) {
   return ch;
 }
 
-/// Our insertion sort implementation, works with pointers and iterators and is
-/// guaranteed to be stable, as is needed.
-template<typename T, typename K>
-void sort(K first, K last)
-{
-  T tmp;
-  K p, q;
-
-  for (p = first + 1; p < last; p++)
-  {
-      tmp = *p;
-      for (q = p; q != first && *(q-1) < tmp; --q)
-          *q = *(q-1);
-      *q = tmp;
-  }
-}
-
 #endif // !defined(TYPES_H_INCLUDED)