X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.h;h=ddd05e4e13d56dc67a829cbf08bc07504e945505;hp=28bf045255ccd8b6aae115020ce285cc4fafb651;hb=770c8d92f3886d11ae88afef13f6552f9132a714;hpb=99c9cae5865575c03a3eeea4ee6ea54ec8d59b18

diff --git a/src/misc.h b/src/misc.h
index 28bf0452..ddd05e4e 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -2,6 +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
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -21,6 +22,7 @@
 #define MISC_H_INCLUDED
 
 #include <cassert>
+#include <chrono>
 #include <ostream>
 #include <string>
 #include <vector>
@@ -29,26 +31,28 @@
 
 const std::string engine_info(bool to_uci = false);
 void prefetch(void* addr);
-void start_logger(bool b);
+void start_logger(const std::string& fname);
 
 void dbg_hit_on(bool b);
 void dbg_hit_on(bool c, bool b);
 void dbg_mean_of(int v);
 void dbg_print();
 
+typedef std::chrono::milliseconds::rep TimePoint; // A value in milliseconds
 
-namespace Time {
-  typedef int64_t point;
-  point now();
-}
+static_assert(sizeof(TimePoint) == sizeof(int64_t), "TimePoint should be 64 bits");
 
+inline TimePoint now() {
+  return std::chrono::duration_cast<std::chrono::milliseconds>
+        (std::chrono::steady_clock::now().time_since_epoch()).count();
+}
 
 template<class Entry, int Size>
 struct HashTable {
   Entry* operator[](Key key) { return &table[(uint32_t)key & (Size - 1)]; }
 
 private:
-  std::vector<Entry> table = std::vector<Entry>(Size);
+  std::vector<Entry> table = std::vector<Entry>(Size); // Allocate on the heap
 };
 
 
@@ -95,4 +99,15 @@ public:
   { return T(rand64() & rand64() & rand64()); }
 };
 
+
+/// Under Windows it is not possible for a process to run on more than one
+/// logical processor group. This usually means to be limited to use max 64
+/// cores. To overcome this, some special platform specific API should be
+/// called to set group affinity for each thread. Original code from Texel by
+/// Peter Österlund.
+
+namespace WinProcGroup {
+  void bindThisThread(size_t idx);
+}
+
 #endif // #ifndef MISC_H_INCLUDED