/*
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) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+ Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <iostream>
#include <sstream>
#include <vector>
+#include <cstdlib>
#if defined(__linux__) && !defined(__ANDROID__)
#include <stdlib.h>
#include <sys/mman.h>
#endif
+#if defined(__APPLE__) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32))
+#define POSIXALIGNEDALLOC
+#include <stdlib.h>
+#endif
+
#include "misc.h"
#include "thread.h"
ss << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2);
}
- ss << (Is64Bit ? " 64" : "")
- << (HasPext ? " BMI2" : (HasPopCnt ? " POPCNT" : ""))
- << (to_uci ? "\nid author ": " by ")
- << "T. Romstad, M. Costalba, J. Kiiski, G. Linscott";
+ ss << (to_uci ? "\nid author ": " by ")
+ << "the Stockfish developers (see AUTHORS file)";
return ss.str();
}
compiler += " on unknown system";
#endif
- compiler += "\n __VERSION__ macro expands to: ";
+ compiler += "\nCompilation settings include: ";
+ compiler += (Is64Bit ? " 64bit" : " 32bit");
+ #if defined(USE_VNNI)
+ compiler += " VNNI";
+ #endif
+ #if defined(USE_AVX512)
+ compiler += " AVX512";
+ #endif
+ compiler += (HasPext ? " BMI2" : "");
+ #if defined(USE_AVX2)
+ compiler += " AVX2";
+ #endif
+ #if defined(USE_SSE41)
+ compiler += " SSE41";
+ #endif
+ #if defined(USE_SSSE3)
+ compiler += " SSSE3";
+ #endif
+ #if defined(USE_SSE2)
+ compiler += " SSE2";
+ #endif
+ compiler += (HasPopCnt ? " POPCNT" : "");
+ #if defined(USE_MMX)
+ compiler += " MMX";
+ #endif
+ #if defined(USE_NEON)
+ compiler += " NEON";
+ #endif
+
+ #if !defined(NDEBUG)
+ compiler += " DEBUG";
+ #endif
+
+ compiler += "\n__VERSION__ macro expands to: ";
#ifdef __VERSION__
compiler += __VERSION__;
#else
#endif
+/// Wrappers for systems where the c++17 implementation doesn't guarantee the availability of aligned_alloc.
+/// Memory allocated with std_aligned_alloc must be freed with std_aligned_free.
+///
+
+void* std_aligned_alloc(size_t alignment, size_t size) {
+#if defined(POSIXALIGNEDALLOC)
+ void *pointer;
+ if(posix_memalign(&pointer, alignment, size) == 0)
+ return pointer;
+ return nullptr;
+#elif defined(_WIN32)
+ return _mm_malloc(size, alignment);
+#else
+ return std::aligned_alloc(alignment, size);
+#endif
+}
+
+void std_aligned_free(void* ptr) {
+#if defined(POSIXALIGNEDALLOC)
+ free(ptr);
+#elif defined(_WIN32)
+ _mm_free(ptr);
+#else
+ free(ptr);
+#endif
+}
+
+/// aligned_ttmem_alloc() will return suitably aligned memory, and if possible use large pages.
+/// The returned pointer is the aligned one, while the mem argument is the one that needs
+/// to be passed to free. With c++17 some of this functionality could be simplified.
-/// aligned_ttmem_alloc will return suitably aligned memory, and if possible use large pages.
-/// The returned pointer is the aligned one, while the mem argument is the one that needs to be passed to free.
-/// With c++17 some of this functionality can be simplified.
#if defined(__linux__) && !defined(__ANDROID__)
void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
size_t size = ((allocSize + alignment - 1) / alignment) * alignment; // multiple of alignment
if (posix_memalign(&mem, alignment, size))
mem = nullptr;
+#if defined(MADV_HUGEPAGE)
madvise(mem, allocSize, MADV_HUGEPAGE);
+#endif
return mem;
}
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
// Try to enable SeLockMemoryPrivilege. Note that even if AdjustTokenPrivileges() succeeds,
- // we still need to query GetLastError() to ensure that the privileges were actually obtained...
+ // we still need to query GetLastError() to ensure that the privileges were actually obtained.
if (AdjustTokenPrivileges(
hProcessToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), &prevTp, &prevTpLen) &&
GetLastError() == ERROR_SUCCESS)
{
- // round up size to full pages and allocate
+ // Round up size to full pages and allocate
allocSize = (allocSize + largePageSize - 1) & ~size_t(largePageSize - 1);
mem = VirtualAlloc(
NULL, allocSize, MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
- // privilege no longer needed, restore previous state
+ // Privilege no longer needed, restore previous state
AdjustTokenPrivileges(hProcessToken, FALSE, &prevTp, 0, NULL, NULL);
}
}
void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
- // try to allocate large pages
+ static bool firstCall = true;
+
+ // Try to allocate large pages
mem = aligned_ttmem_alloc_large_pages(allocSize);
- if (mem)
- sync_cout << "info string Hash table allocation: Windows large pages used." << sync_endl;
- else
- sync_cout << "info string Hash table allocation: Windows large pages not used." << sync_endl;
- // fall back to regular, page aligned, allocation if necessary
+ // Suppress info strings on the first call. The first call occurs before 'uci'
+ // is received and in that case this output confuses some GUIs.
+ if (!firstCall)
+ {
+ if (mem)
+ sync_cout << "info string Hash table allocation: Windows large pages used." << sync_endl;
+ else
+ sync_cout << "info string Hash table allocation: Windows large pages not used." << sync_endl;
+ }
+ firstCall = false;
+
+ // Fall back to regular, page aligned, allocation if necessary
if (!mem)
mem = VirtualAlloc(NULL, allocSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
#endif
-/// aligned_ttmem_free will free the previously allocated ttmem
+
+/// aligned_ttmem_free() will free the previously allocated ttmem
+
#if defined(_WIN64)
void aligned_ttmem_free(void* mem) {
- if (!VirtualFree(mem, 0, MEM_RELEASE))
+ if (mem && !VirtualFree(mem, 0, MEM_RELEASE))
{
DWORD err = GetLastError();
std::cerr << "Failed to free transposition table. Error code: 0x" <<
projects / stockfish / blobdiff