X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmisc.h;h=37f1e706347b5e55d54d7dbc514207b49a2c330b;hb=27c5cb59127101d834636d4faa0062d4e7bd05ce;hp=6fffabfba1233aae8134ef88f9593c6a5294d242;hpb=efeb37c33f15a903dbe5706529a7a26511e9ca58;p=stockfish
diff --git a/src/misc.h b/src/misc.h
index 6fffabfb..37f1e706 100644
--- a/src/misc.h
+++ b/src/misc.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) 2008-2015 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
@@ -17,55 +17,83 @@
along with this program. If not, see .
*/
-
-#if !defined(MISC_H_INCLUDED)
+#ifndef MISC_H_INCLUDED
#define MISC_H_INCLUDED
-
-////
-//// Includes
-////
-
-#include
+#include
+#include
+#include
#include
+#include
#include "types.h"
-////
-//// Macros
-////
+const std::string engine_info(bool to_uci = false);
+void prefetch(void* addr);
+void start_logger(bool b);
+
+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
+
+inline TimePoint now() {
+ return std::chrono::duration_cast
+ (std::chrono::steady_clock::now().time_since_epoch()).count();
+}
+
+template
+struct HashTable {
+ Entry* operator[](Key key) { return &table[(uint32_t)key & (Size - 1)]; }
+
+private:
+ std::vector table = std::vector(Size);
+};
+
+
+enum SyncCout { IO_LOCK, IO_UNLOCK };
+std::ostream& operator<<(std::ostream&, SyncCout);
+
+#define sync_cout std::cout << IO_LOCK
+#define sync_endl std::endl << IO_UNLOCK
+
-#define Min(x, y) (((x) < (y))? (x) : (y))
-#define Max(x, y) (((x) < (y))? (y) : (x))
+/// xorshift64star Pseudo-Random Number Generator
+/// This class is based on original code written and dedicated
+/// to the public domain by Sebastiano Vigna (2014).
+/// It has the following characteristics:
+///
+/// - Outputs 64-bit numbers
+/// - Passes Dieharder and SmallCrush test batteries
+/// - Does not require warm-up, no zeroland to escape
+/// - Internal state is a single 64-bit integer
+/// - Period is 2^64 - 1
+/// - Speed: 1.60 ns/call (Core i7 @3.40GHz)
+///
+/// For further analysis see
+///
+class PRNG {
-////
-//// Prototypes
-////
+ uint64_t s;
-extern const std::string engine_name();
-extern int get_system_time();
-extern int cpu_count();
-extern int data_available();
-extern void prefetch(char* addr);
-extern void prefetchPawn(Key, int);
+ uint64_t rand64() {
+ s ^= s >> 12, s ^= s << 25, s ^= s >> 27;
+ return s * 2685821657736338717LL;
+ }
-////
-//// Debug
-////
+public:
+ PRNG(uint64_t seed) : s(seed) { assert(seed); }
-extern bool dbg_show_mean;
-extern bool dbg_show_hit_rate;
+ template T rand() { return T(rand64()); }
-extern void dbg_hit_on(bool b);
-extern void dbg_hit_on_c(bool c, bool b);
-extern void dbg_before();
-extern void dbg_after();
-extern void dbg_mean_of(int v);
-extern void dbg_print_hit_rate();
-extern void dbg_print_mean();
-extern void dbg_print_hit_rate(std::ofstream& logFile);
-extern void dbg_print_mean(std::ofstream& logFile);
+ /// Special generator used to fast init magic numbers.
+ /// Output values only have 1/8th of their bits set on average.
+ template T sparse_rand()
+ { return T(rand64() & rand64() & rand64()); }
+};
-#endif // !defined(MISC_H_INCLUDED)
+#endif // #ifndef MISC_H_INCLUDED