X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fendgame.h;h=4642e44857b4ac7500652941f57243ea736e5260;hb=7150183d07a40653aff6ba64a73f27fe049f525d;hp=81afb2e55478ccbd62764c009d43f3cbf7cdc22f;hpb=4a7b8180ecaef7d164fa53a1d545372df1173596;p=stockfish

diff --git a/src/endgame.h b/src/endgame.h
index 81afb2e5..4642e448 100644
--- a/src/endgame.h
+++ b/src/endgame.h
@@ -2,7 +2,7 @@
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
   Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
-  Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+  Copyright (C) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, 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
@@ -21,7 +21,7 @@
 #ifndef ENDGAME_H_INCLUDED
 #define ENDGAME_H_INCLUDED
 
-#include <map>
+#include <unordered_map>
 #include <memory>
 #include <string>
 #include <type_traits>
@@ -91,17 +91,19 @@ struct Endgame : public EndgameBase<T> {
 };
 
 
-/// The Endgames class stores the pointers to endgame evaluation and scaling
+/// The Endgames namespace handles the pointers to endgame evaluation and scaling
 /// base objects in two std::map. We use polymorphism to invoke the actual
 /// endgame function by calling its virtual operator().
 
 namespace Endgames {
 
   template<typename T> using Ptr = std::unique_ptr<EndgameBase<T>>;
-  template<typename T> using Map = std::map<Key, Ptr<T>>;
-  
+  template<typename T> using Map = std::unordered_map<Key, Ptr<T>>;
+
   extern std::pair<Map<Value>, Map<ScaleFactor>> maps;
 
+  void init();
+
   template<typename T>
   Map<T>& map() {
     return std::get<std::is_same<T, ScaleFactor>::value>(maps);
@@ -117,10 +119,9 @@ namespace Endgames {
 
   template<typename T>
   const EndgameBase<T>* probe(Key key) {
-    return map<T>().count(key) ? map<T>()[key].get() : nullptr;
+    auto it = map<T>().find(key);
+    return it != map<T>().end() ? it->second.get() : nullptr;
   }
-
-  void init();
 }
 
 #endif // #ifndef ENDGAME_H_INCLUDED