X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=bdd7bccbc1d33001d3ab171fc67d883fd5b4e94d;hp=b1c0feeb9e139b6b91476663d5a5987872746c0e;hb=cd1bb27dd452f336d434a45131bfbe43f8a8c5b3;hpb=d4763424d2728fe2dfd0a6fe747666feb6a2fdbb

diff --git a/src/misc.cpp b/src/misc.cpp
index b1c0feeb..bdd7bccb 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -1,8 +1,6 @@
 /*
   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
@@ -46,6 +44,7 @@ typedef bool(*fun3_t)(HANDLE, CONST GROUP_AFFINITY*, PGROUP_AFFINITY);
 #include <iostream>
 #include <sstream>
 #include <vector>
+#include <cstdlib>
 
 #if defined(__linux__) && !defined(__ANDROID__)
 #include <stdlib.h>
@@ -147,10 +146,8 @@ const string engine_info(bool to_uci) {
       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();
 }
@@ -215,7 +212,33 @@ const std::string compiler_info() {
      compiler += " on unknown system";
   #endif
 
-  compiler += "\n __VERSION__ macro expands to: ";
+  compiler += "\nCompilation settings include: ";
+  compiler += (Is64Bit ? " 64bit" : " 32bit");
+  #if defined(USE_AVX512)
+    compiler += " AVX512";
+  #endif
+  #if defined(USE_AVX2)
+    compiler += " AVX2";
+  #endif
+  #if defined(USE_SSE42)
+    compiler += " SSE42";
+  #endif
+  #if defined(USE_SSE41)
+    compiler += " SSE41";
+  #endif
+  #if defined(USE_SSSE3)
+    compiler += " SSSE3";
+  #endif
+  #if defined(USE_SSE3)
+    compiler += " SSE3";
+  #endif
+    compiler += (HasPext ? " BMI2" : "");
+    compiler += (HasPopCnt ? " POPCNT" : "");
+  #if !defined(NDEBUG)
+    compiler += " DEBUG";
+  #endif
+
+  compiler += "\n__VERSION__ macro expands to: ";
   #ifdef __VERSION__
      compiler += __VERSION__;
   #else
@@ -293,10 +316,34 @@ void prefetch(void* addr) {
 
 #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(__APPLE__) && defined(_LIBCPP_HAS_C11_FEATURES)) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32))
+  return aligned_alloc(alignment, size);
+#elif (defined(_WIN32) || (defined(__APPLE__) && !defined(_LIBCPP_HAS_C11_FEATURES)))
+  return _mm_malloc(size, alignment);
+#else
+  return std::aligned_alloc(alignment, size);
+#endif
+}
+
+void std_aligned_free(void* ptr) {
+#if (defined(__APPLE__) && defined(_LIBCPP_HAS_C11_FEATURES)) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32))
+  free(ptr);
+#elif (defined(_WIN32) || (defined(__APPLE__) && !defined(_LIBCPP_HAS_C11_FEATURES)))
+  _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) {
@@ -336,17 +383,17 @@ static void* aligned_ttmem_alloc_large_pages(size_t allocSize) {
       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);
       }
   }
@@ -358,14 +405,23 @@ static void* aligned_ttmem_alloc_large_pages(size_t allocSize) {
 
 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);
 
@@ -385,12 +441,14 @@ void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
 
 #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" <<