} // namespace
+
/// engine_info() returns the full name of the current Stockfish version. This
/// will be either "Stockfish <Tag> DD-MM-YY" (where DD-MM-YY is the date when
/// the program was compiled) or "Stockfish <Version>", depending on whether
{
date >> month >> day >> year;
ss << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2);
+ ss << "-asn";
}
ss << (to_uci ? "\nid author ": " by ")
#if defined(USE_MMX)
compiler += " MMX";
#endif
+ #if defined(USE_NEON)
+ compiler += " NEON";
+ #endif
#if !defined(NDEBUG)
compiler += " DEBUG";
#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.
-///
+
+/// std_aligned_alloc() is our wrapper for systems where the c++17 implementation
+/// does not 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;
+ void *mem;
+ return posix_memalign(&mem, alignment, size) ? nullptr : mem;
#elif defined(_WIN32)
return _mm_malloc(size, alignment);
#else
}
void std_aligned_free(void* ptr) {
+
#if defined(POSIXALIGNEDALLOC)
free(ptr);
#elif defined(_WIN32)
#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.
-
-#if defined(__linux__) && !defined(__ANDROID__)
+/// aligned_large_pages_alloc() will return suitably aligned memory, if possible using large pages.
-void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
+#if defined(_WIN32)
- constexpr size_t alignment = 2 * 1024 * 1024; // assumed 2MB page sizes
- size_t size = ((allocSize + alignment - 1) / alignment) * alignment; // multiple of alignment
- if (posix_memalign(&mem, alignment, size))
- mem = nullptr;
- madvise(mem, allocSize, MADV_HUGEPAGE);
- return mem;
-}
-
-#elif defined(_WIN64)
-
-static void* aligned_ttmem_alloc_large_pages(size_t allocSize) {
+static void* aligned_large_pages_alloc_win(size_t allocSize) {
HANDLE hProcessToken { };
LUID luid { };
return mem;
}
-void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
-
- static bool firstCall = true;
+void* aligned_large_pages_alloc(size_t allocSize) {
// Try to allocate large pages
- mem = aligned_ttmem_alloc_large_pages(allocSize);
-
- // 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;
+ void* mem = aligned_large_pages_alloc_win(allocSize);
// Fall back to regular, page aligned, allocation if necessary
if (!mem)
#else
-void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
+void* aligned_large_pages_alloc(size_t allocSize) {
+
+#if defined(__linux__)
+ constexpr size_t alignment = 2 * 1024 * 1024; // assumed 2MB page size
+#else
+ constexpr size_t alignment = 4096; // assumed small page size
+#endif
- constexpr size_t alignment = 64; // assumed cache line size
- size_t size = allocSize + alignment - 1; // allocate some extra space
- mem = malloc(size);
- void* ret = reinterpret_cast<void*>((uintptr_t(mem) + alignment - 1) & ~uintptr_t(alignment - 1));
- return ret;
+ // round up to multiples of alignment
+ size_t size = ((allocSize + alignment - 1) / alignment) * alignment;
+ void *mem = std_aligned_alloc(alignment, size);
+#if defined(MADV_HUGEPAGE)
+ madvise(mem, size, MADV_HUGEPAGE);
+#endif
+ return mem;
}
#endif
-/// aligned_ttmem_free() will free the previously allocated ttmem
+/// aligned_large_pages_free() will free the previously allocated ttmem
-#if defined(_WIN64)
+#if defined(_WIN32)
-void aligned_ttmem_free(void* mem) {
+void aligned_large_pages_free(void* mem) {
if (mem && !VirtualFree(mem, 0, MEM_RELEASE))
{
#else
-void aligned_ttmem_free(void *mem) {
- free(mem);
+void aligned_large_pages_free(void *mem) {
+ std_aligned_free(mem);
}
#endif
#endif
} // namespace WinProcGroup
+
+#ifdef _WIN32
+#include <direct.h>
+#define GETCWD _getcwd
+#else
+#include <unistd.h>
+#define GETCWD getcwd
+#endif
+
+namespace CommandLine {
+
+string argv0; // path+name of the executable binary, as given by argv[0]
+string binaryDirectory; // path of the executable directory
+string workingDirectory; // path of the working directory
+
+void init(int argc, char* argv[]) {
+ (void)argc;
+ string pathSeparator;
+
+ // extract the path+name of the executable binary
+ argv0 = argv[0];
+
+#ifdef _WIN32
+ pathSeparator = "\\";
+ #ifdef _MSC_VER
+ // Under windows argv[0] may not have the extension. Also _get_pgmptr() had
+ // issues in some windows 10 versions, so check returned values carefully.
+ char* pgmptr = nullptr;
+ if (!_get_pgmptr(&pgmptr) && pgmptr != nullptr && *pgmptr)
+ argv0 = pgmptr;
+ #endif
+#else
+ pathSeparator = "/";
+#endif
+
+ // extract the working directory
+ workingDirectory = "";
+ char buff[40000];
+ char* cwd = GETCWD(buff, 40000);
+ if (cwd)
+ workingDirectory = cwd;
+
+ // extract the binary directory path from argv0
+ binaryDirectory = argv0;
+ size_t pos = binaryDirectory.find_last_of("\\/");
+ if (pos == std::string::npos)
+ binaryDirectory = "." + pathSeparator;
+ else
+ binaryDirectory.resize(pos + 1);
+
+ // pattern replacement: "./" at the start of path is replaced by the working directory
+ if (binaryDirectory.find("." + pathSeparator) == 0)
+ binaryDirectory.replace(0, 1, workingDirectory);
+}
+
+
+} // namespace CommandLine
projects / stockfish / blobdiff