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) 2015-2018 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
if (!fname.empty() && !l.file.is_open())
{
l.file.open(fname, ifstream::out);
+
+ if (!l.file.is_open())
+ {
+ cerr << "Unable to open debug log file " << fname << endl;
+ exit(EXIT_FAILURE);
+ }
+
cin.rdbuf(&l.in);
cout.rdbuf(&l.out);
}
}
+/// compiler_info() returns a string trying to describe the compiler we use
+
+const std::string compiler_info() {
+
+ #define STRINGIFY2(x) #x
+ #define STRINGIFY(x) STRINGIFY2(x)
+ #define VER_STRING(major, minor, patch) STRINGIFY(major) "." STRINGIFY(minor) "." STRINGIFY(patch)
+
+/// Predefined macros hell:
+///
+/// __GNUC__ Compiler is gcc, Clang or Intel on Linux
+/// __INTEL_COMPILER Compiler is Intel
+/// _MSC_VER Compiler is MSVC or Intel on Windows
+/// _WIN32 Building on Windows (any)
+/// _WIN64 Building on Windows 64 bit
+
+ std::string compiler = "\nCompiled by ";
+
+ #ifdef __clang__
+ compiler += "clang++ ";
+ compiler += VER_STRING(__clang_major__, __clang_minor__, __clang_patchlevel__);
+ #elif __INTEL_COMPILER
+ compiler += "Intel compiler ";
+ compiler += "(version ";
+ compiler += STRINGIFY(__INTEL_COMPILER) " update " STRINGIFY(__INTEL_COMPILER_UPDATE);
+ compiler += ")";
+ #elif _MSC_VER
+ compiler += "MSVC ";
+ compiler += "(version ";
+ compiler += STRINGIFY(_MSC_FULL_VER) "." STRINGIFY(_MSC_BUILD);
+ compiler += ")";
+ #elif __GNUC__
+ compiler += "g++ (GNUC) ";
+ compiler += VER_STRING(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__);
+ #else
+ compiler += "Unknown compiler ";
+ compiler += "(unknown version)";
+ #endif
+
+ #if defined(__APPLE__)
+ compiler += " on Apple";
+ #elif defined(__CYGWIN__)
+ compiler += " on Cygwin";
+ #elif defined(__MINGW64__)
+ compiler += " on MinGW64";
+ #elif defined(__MINGW32__)
+ compiler += " on MinGW32";
+ #elif defined(__ANDROID__)
+ compiler += " on Android";
+ #elif defined(__linux__)
+ compiler += " on Linux";
+ #elif defined(_WIN64)
+ compiler += " on Microsoft Windows 64-bit";
+ #elif defined(_WIN32)
+ compiler += " on Microsoft Windows 32-bit";
+ #else
+ compiler += " on unknown system";
+ #endif
+
+ compiler += "\n __VERSION__ macro expands to: ";
+ #ifdef __VERSION__
+ compiler += __VERSION__;
+ #else
+ compiler += "(undefined macro)";
+ #endif
+ compiler += "\n";
+
+ return compiler;
+}
+
+
/// Debug functions used mainly to collect run-time statistics
-static int64_t hits[2], means[2];
+static std::atomic<int64_t> hits[2], means[2];
void dbg_hit_on(bool b) { ++hits[0]; if (b) ++hits[1]; }
void dbg_hit_on(bool c, bool b) { if (c) dbg_hit_on(b); }
std::ostream& operator<<(std::ostream& os, SyncCout sc) {
- static Mutex m;
+ static std::mutex m;
if (sc == IO_LOCK)
m.lock();
#endif
-void prefetch2(void* addr) {
-
- prefetch(addr);
- prefetch((uint8_t*)addr + 64);
-}
-
namespace WinProcGroup {
#ifndef _WIN32
#else
-/// get_group() retrieves logical processor information using Windows specific
+/// best_group() retrieves logical processor information using Windows specific
/// API and returns the best group id for the thread with index idx. Original
/// code from Texel by Peter Ă–sterlund.
-int get_group(size_t idx) {
+int best_group(size_t idx) {
int threads = 0;
int nodes = 0;
// Early exit if the needed API is not available at runtime
HMODULE k32 = GetModuleHandle("Kernel32.dll");
- auto fun1 = (fun1_t)GetProcAddress(k32, "GetLogicalProcessorInformationEx");
+ auto fun1 = (fun1_t)(void(*)())GetProcAddress(k32, "GetLogicalProcessorInformationEx");
if (!fun1)
return -1;
return -1;
}
- while (ptr->Size > 0 && byteOffset + ptr->Size <= returnLength)
+ while (byteOffset < returnLength)
{
if (ptr->Relationship == RelationNumaNode)
nodes++;
threads += (ptr->Processor.Flags == LTP_PC_SMT) ? 2 : 1;
}
+ assert(ptr->Size);
byteOffset += ptr->Size;
ptr = (SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX*)(((char*)ptr) + ptr->Size);
}
void bindThisThread(size_t idx) {
// Use only local variables to be thread-safe
- int group = get_group(idx);
+ int group = best_group(idx);
if (group == -1)
return;
// Early exit if the needed API are not available at runtime
HMODULE k32 = GetModuleHandle("Kernel32.dll");
- auto fun2 = (fun2_t)GetProcAddress(k32, "GetNumaNodeProcessorMaskEx");
- auto fun3 = (fun3_t)GetProcAddress(k32, "SetThreadGroupAffinity");
+ auto fun2 = (fun2_t)(void(*)())GetProcAddress(k32, "GetNumaNodeProcessorMaskEx");
+ auto fun3 = (fun3_t)(void(*)())GetProcAddress(k32, "SetThreadGroupAffinity");
if (!fun2 || !fun3)
return;