Revision control
++ // Copyright 2009-2021 Intel Corporation
++ // SPDX-License-Identifier: Apache-2.0
++
++ #include "sysinfo.h"
++ #include "intrinsics.h"
++ #include "string.h"
++ #include "ref.h"
++ #if defined(__FREEBSD__)
++ #include <sys/cpuset.h>
++ #include <pthread_np.h>
++ typedef cpuset_t cpu_set_t;
++ #endif
++
++ ////////////////////////////////////////////////////////////////////////////////
++ /// All Platforms
++ ////////////////////////////////////////////////////////////////////////////////
++
++ namespace embree
++ {
++ NullTy null;
++
++ std::string getPlatformName()
++ {
++ #if defined(__ANDROID__) && !defined(__64BIT__)
++ return "Android (32bit)";
++ #elif defined(__ANDROID__) && defined(__64BIT__)
++ return "Android (64bit)";
++ #elif defined(__LINUX__) && !defined(__64BIT__)
++ return "Linux (32bit)";
++ #elif defined(__LINUX__) && defined(__64BIT__)
++ return "Linux (64bit)";
++ #elif defined(__FREEBSD__) && !defined(__64BIT__)
++ return "FreeBSD (32bit)";
++ #elif defined(__FREEBSD__) && defined(__64BIT__)
++ return "FreeBSD (64bit)";
++ #elif defined(__CYGWIN__) && !defined(__64BIT__)
++ return "Cygwin (32bit)";
++ #elif defined(__CYGWIN__) && defined(__64BIT__)
++ return "Cygwin (64bit)";
++ #elif defined(__WIN32__) && !defined(__64BIT__)
++ return "Windows (32bit)";
++ #elif defined(__WIN32__) && defined(__64BIT__)
++ return "Windows (64bit)";
++ #elif defined(__MACOSX__) && !defined(__64BIT__)
++ return "Mac OS X (32bit)";
++ #elif defined(__MACOSX__) && defined(__64BIT__)
++ return "Mac OS X (64bit)";
++ #elif defined(__UNIX__) && !defined(__64BIT__)
++ return "Unix (32bit)";
++ #elif defined(__UNIX__) && defined(__64BIT__)
++ return "Unix (64bit)";
++ #else
++ return "Unknown";
++ #endif
++ }
++
++ std::string getCompilerName()
++ {
++ #if defined(__INTEL_COMPILER)
++ int icc_mayor = __INTEL_COMPILER / 100 % 100;
++ int icc_minor = __INTEL_COMPILER % 100;
++ std::string version = "Intel Compiler ";
++ version += toString(icc_mayor);
++ version += "." + toString(icc_minor);
++ #if defined(__INTEL_COMPILER_UPDATE)
++ version += "." + toString(__INTEL_COMPILER_UPDATE);
++ #endif
++ return version;
++ #elif defined(__clang__)
++ return "CLANG " __clang_version__;
++ #elif defined (__GNUC__)
++ return "GCC " __VERSION__;
++ #elif defined(_MSC_VER)
++ std::string version = toString(_MSC_FULL_VER);
++ version.insert(4,".");
++ version.insert(9,".");
++ version.insert(2,".");
++ return "Visual C++ Compiler " + version;
++ #else
++ return "Unknown Compiler";
++ #endif
++ }
++
++ std::string getCPUVendor()
++ {
++ #if defined(__X86_ASM__)
++ int cpuinfo[4];
++ __cpuid (cpuinfo, 0);
++ int name[4];
++ name[0] = cpuinfo[1];
++ name[1] = cpuinfo[3];
++ name[2] = cpuinfo[2];
++ name[3] = 0;
++ return (char*)name;
++ #elif defined(__ARM_NEON)
++ return "ARM";
++ #else
++ return "Unknown";
++ #endif
++ }
++
++ CPU getCPUModel()
++ {
++ #if defined(__X86_ASM__)
++ if (getCPUVendor() != "GenuineIntel")
++ return CPU::UNKNOWN;
++
++ int out[4];
++ __cpuid(out, 0);
++ if (out[0] < 1) return CPU::UNKNOWN;
++ __cpuid(out, 1);
++
++ /* please see CPUID documentation for these formulas */
++ uint32_t family_ID = (out[0] >> 8) & 0x0F;
++ uint32_t extended_family_ID = (out[0] >> 20) & 0xFF;
++
++ uint32_t model_ID = (out[0] >> 4) & 0x0F;
++ uint32_t extended_model_ID = (out[0] >> 16) & 0x0F;
++
++ uint32_t DisplayFamily = family_ID;
++ if (family_ID == 0x0F)
++ DisplayFamily += extended_family_ID;
++
++ uint32_t DisplayModel = model_ID;
++ if (family_ID == 0x06 || family_ID == 0x0F)
++ DisplayModel += extended_model_ID << 4;
++
++ uint32_t DisplayFamily_DisplayModel = (DisplayFamily << 8) + (DisplayModel << 0);
++
++ // Data from Intel® 64 and IA-32 Architectures, Volume 4, Chapter 2, Table 2-1 (CPUID Signature Values of DisplayFamily_DisplayModel)
++ if (DisplayFamily_DisplayModel == 0x067D) return CPU::CORE_ICE_LAKE;
++ if (DisplayFamily_DisplayModel == 0x067E) return CPU::CORE_ICE_LAKE;
++ if (DisplayFamily_DisplayModel == 0x068C) return CPU::CORE_TIGER_LAKE;
++ if (DisplayFamily_DisplayModel == 0x06A5) return CPU::CORE_COMET_LAKE;
++ if (DisplayFamily_DisplayModel == 0x06A6) return CPU::CORE_COMET_LAKE;
++ if (DisplayFamily_DisplayModel == 0x0666) return CPU::CORE_CANNON_LAKE;
++ if (DisplayFamily_DisplayModel == 0x068E) return CPU::CORE_KABY_LAKE;
++ if (DisplayFamily_DisplayModel == 0x069E) return CPU::CORE_KABY_LAKE;
++ if (DisplayFamily_DisplayModel == 0x066A) return CPU::XEON_ICE_LAKE;
++ if (DisplayFamily_DisplayModel == 0x066C) return CPU::XEON_ICE_LAKE;
++ if (DisplayFamily_DisplayModel == 0x0655) return CPU::XEON_SKY_LAKE;
++ if (DisplayFamily_DisplayModel == 0x064E) return CPU::CORE_SKY_LAKE;
++ if (DisplayFamily_DisplayModel == 0x065E) return CPU::CORE_SKY_LAKE;
++ if (DisplayFamily_DisplayModel == 0x0656) return CPU::XEON_BROADWELL;
++ if (DisplayFamily_DisplayModel == 0x064F) return CPU::XEON_BROADWELL;
++ if (DisplayFamily_DisplayModel == 0x0647) return CPU::CORE_BROADWELL;
++ if (DisplayFamily_DisplayModel == 0x063D) return CPU::CORE_BROADWELL;
++ if (DisplayFamily_DisplayModel == 0x063F) return CPU::XEON_HASWELL;
++ if (DisplayFamily_DisplayModel == 0x063C) return CPU::CORE_HASWELL;
++ if (DisplayFamily_DisplayModel == 0x0645) return CPU::CORE_HASWELL;
++ if (DisplayFamily_DisplayModel == 0x0646) return CPU::CORE_HASWELL;
++ if (DisplayFamily_DisplayModel == 0x063E) return CPU::XEON_IVY_BRIDGE;
++ if (DisplayFamily_DisplayModel == 0x063A) return CPU::CORE_IVY_BRIDGE;
++ if (DisplayFamily_DisplayModel == 0x062D) return CPU::SANDY_BRIDGE;
++ if (DisplayFamily_DisplayModel == 0x062F) return CPU::SANDY_BRIDGE;
++ if (DisplayFamily_DisplayModel == 0x062A) return CPU::SANDY_BRIDGE;
++ if (DisplayFamily_DisplayModel == 0x062E) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x0625) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x062C) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x061E) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x061F) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x061A) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x061D) return CPU::NEHALEM;
++ if (DisplayFamily_DisplayModel == 0x0617) return CPU::CORE2;
++ if (DisplayFamily_DisplayModel == 0x060F) return CPU::CORE2;
++ if (DisplayFamily_DisplayModel == 0x060E) return CPU::CORE1;
++
++ if (DisplayFamily_DisplayModel == 0x0685) return CPU::XEON_PHI_KNIGHTS_MILL;
++ if (DisplayFamily_DisplayModel == 0x0657) return CPU::XEON_PHI_KNIGHTS_LANDING;
++
++ #elif defined(__ARM_NEON)
++ return CPU::ARM;
++ #endif
++
++ return CPU::UNKNOWN;
++ }
++
++ std::string stringOfCPUModel(CPU model)
++ {
++ switch (model) {
++ case CPU::XEON_ICE_LAKE : return "Xeon Ice Lake";
++ case CPU::CORE_ICE_LAKE : return "Core Ice Lake";
++ case CPU::CORE_TIGER_LAKE : return "Core Tiger Lake";
++ case CPU::CORE_COMET_LAKE : return "Core Comet Lake";
++ case CPU::CORE_CANNON_LAKE : return "Core Cannon Lake";
++ case CPU::CORE_KABY_LAKE : return "Core Kaby Lake";
++ case CPU::XEON_SKY_LAKE : return "Xeon Sky Lake";
++ case CPU::CORE_SKY_LAKE : return "Core Sky Lake";
++ case CPU::XEON_PHI_KNIGHTS_MILL : return "Xeon Phi Knights Mill";
++ case CPU::XEON_PHI_KNIGHTS_LANDING: return "Xeon Phi Knights Landing";
++ case CPU::XEON_BROADWELL : return "Xeon Broadwell";
++ case CPU::CORE_BROADWELL : return "Core Broadwell";
++ case CPU::XEON_HASWELL : return "Xeon Haswell";
++ case CPU::CORE_HASWELL : return "Core Haswell";
++ case CPU::XEON_IVY_BRIDGE : return "Xeon Ivy Bridge";
++ case CPU::CORE_IVY_BRIDGE : return "Core Ivy Bridge";
++ case CPU::SANDY_BRIDGE : return "Sandy Bridge";
++ case CPU::NEHALEM : return "Nehalem";
++ case CPU::CORE2 : return "Core2";
++ case CPU::CORE1 : return "Core";
++ case CPU::ARM : return "ARM";
++ case CPU::UNKNOWN : return "Unknown CPU";
++ }
++ return "Unknown CPU (error)";
++ }
++
++ #if defined(__X86_ASM__)
++ /* constants to access destination registers of CPUID instruction */
++ static const int EAX = 0;
++ static const int EBX = 1;
++ static const int ECX = 2;
++ static const int EDX = 3;
++
++ /* cpuid[eax=1].ecx */
++ static const int CPU_FEATURE_BIT_SSE3 = 1 << 0;
++ static const int CPU_FEATURE_BIT_SSSE3 = 1 << 9;
++ static const int CPU_FEATURE_BIT_FMA3 = 1 << 12;
++ static const int CPU_FEATURE_BIT_SSE4_1 = 1 << 19;
++ static const int CPU_FEATURE_BIT_SSE4_2 = 1 << 20;
++ //static const int CPU_FEATURE_BIT_MOVBE = 1 << 22;
++ static const int CPU_FEATURE_BIT_POPCNT = 1 << 23;
++ //static const int CPU_FEATURE_BIT_XSAVE = 1 << 26;
++ static const int CPU_FEATURE_BIT_OXSAVE = 1 << 27;
++ static const int CPU_FEATURE_BIT_AVX = 1 << 28;
++ static const int CPU_FEATURE_BIT_F16C = 1 << 29;
++ static const int CPU_FEATURE_BIT_RDRAND = 1 << 30;
++
++ /* cpuid[eax=1].edx */
++ static const int CPU_FEATURE_BIT_SSE = 1 << 25;
++ static const int CPU_FEATURE_BIT_SSE2 = 1 << 26;
++
++ /* cpuid[eax=0x80000001].ecx */
++ static const int CPU_FEATURE_BIT_LZCNT = 1 << 5;
++
++ /* cpuid[eax=7,ecx=0].ebx */
++ static const int CPU_FEATURE_BIT_BMI1 = 1 << 3;
++ static const int CPU_FEATURE_BIT_AVX2 = 1 << 5;
++ static const int CPU_FEATURE_BIT_BMI2 = 1 << 8;
++ static const int CPU_FEATURE_BIT_AVX512F = 1 << 16; // AVX512F (foundation)
++ static const int CPU_FEATURE_BIT_AVX512DQ = 1 << 17; // AVX512DQ (doubleword and quadword instructions)
++ static const int CPU_FEATURE_BIT_AVX512PF = 1 << 26; // AVX512PF (prefetch gather/scatter instructions)
++ static const int CPU_FEATURE_BIT_AVX512ER = 1 << 27; // AVX512ER (exponential and reciprocal instructions)
++ static const int CPU_FEATURE_BIT_AVX512CD = 1 << 28; // AVX512CD (conflict detection instructions)
++ static const int CPU_FEATURE_BIT_AVX512BW = 1 << 30; // AVX512BW (byte and word instructions)
++ static const int CPU_FEATURE_BIT_AVX512VL = 1 << 31; // AVX512VL (vector length extensions)
++ static const int CPU_FEATURE_BIT_AVX512IFMA = 1 << 21; // AVX512IFMA (integer fused multiple-add instructions)
++
++ /* cpuid[eax=7,ecx=0].ecx */
++ static const int CPU_FEATURE_BIT_AVX512VBMI = 1 << 1; // AVX512VBMI (vector bit manipulation instructions)
++ #endif
++
++ #if defined(__X86_ASM__)
++ __noinline int64_t get_xcr0()
++ {
++ #if defined (__WIN32__) && !defined (__MINGW32__)
++ int64_t xcr0 = 0; // int64_t is workaround for compiler bug under VS2013, Win32
++ xcr0 = _xgetbv(0);
++ return xcr0;
++ #else
++ int xcr0 = 0;
++ __asm__ ("xgetbv" : "=a" (xcr0) : "c" (0) : "%edx" );
++ return xcr0;
++ #endif
++ }
++ #endif
++
++ int getCPUFeatures()
++ {
++ #if defined(__X86_ASM__)
++ /* cache CPU features access */
++ static int cpu_features = 0;
++ if (cpu_features)
++ return cpu_features;
++
++ /* get number of CPUID leaves */
++ int cpuid_leaf0[4];
++ __cpuid(cpuid_leaf0, 0x00000000);
++ unsigned nIds = cpuid_leaf0[EAX];
++
++ /* get number of extended CPUID leaves */
++ int cpuid_leafe[4];
++ __cpuid(cpuid_leafe, 0x80000000);
++ unsigned nExIds = cpuid_leafe[EAX];
++
++ /* get CPUID leaves for EAX = 1,7, and 0x80000001 */
++ int cpuid_leaf_1[4] = { 0,0,0,0 };
++ int cpuid_leaf_7[4] = { 0,0,0,0 };
++ int cpuid_leaf_e1[4] = { 0,0,0,0 };
++ if (nIds >= 1) __cpuid (cpuid_leaf_1,0x00000001);
++ #if _WIN32
++ #if _MSC_VER && (_MSC_FULL_VER < 160040219)
++ #else
++ if (nIds >= 7) __cpuidex(cpuid_leaf_7,0x00000007,0);
++ #endif
++ #else
++ if (nIds >= 7) __cpuid_count(cpuid_leaf_7,0x00000007,0);
++ #endif
++ if (nExIds >= 0x80000001) __cpuid(cpuid_leaf_e1,0x80000001);
++
++ /* detect if OS saves XMM, YMM, and ZMM states */
++ bool xmm_enabled = true;
++ bool ymm_enabled = false;
++ bool zmm_enabled = false;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_OXSAVE) {
++ int64_t xcr0 = get_xcr0();
++ xmm_enabled = ((xcr0 & 0x02) == 0x02); /* checks if xmm are enabled in XCR0 */
++ ymm_enabled = xmm_enabled && ((xcr0 & 0x04) == 0x04); /* checks if ymm state are enabled in XCR0 */
++ zmm_enabled = ymm_enabled && ((xcr0 & 0xE0) == 0xE0); /* checks if OPMASK state, upper 256-bit of ZMM0-ZMM15 and ZMM16-ZMM31 state are enabled in XCR0 */
++ }
++ if (xmm_enabled) cpu_features |= CPU_FEATURE_XMM_ENABLED;
++ if (ymm_enabled) cpu_features |= CPU_FEATURE_YMM_ENABLED;
++ if (zmm_enabled) cpu_features |= CPU_FEATURE_ZMM_ENABLED;
++
++ if (cpuid_leaf_1[EDX] & CPU_FEATURE_BIT_SSE ) cpu_features |= CPU_FEATURE_SSE;
++ if (cpuid_leaf_1[EDX] & CPU_FEATURE_BIT_SSE2 ) cpu_features |= CPU_FEATURE_SSE2;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_SSE3 ) cpu_features |= CPU_FEATURE_SSE3;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_SSSE3 ) cpu_features |= CPU_FEATURE_SSSE3;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_SSE4_1) cpu_features |= CPU_FEATURE_SSE41;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_SSE4_2) cpu_features |= CPU_FEATURE_SSE42;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_POPCNT) cpu_features |= CPU_FEATURE_POPCNT;
++
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_AVX ) cpu_features |= CPU_FEATURE_AVX;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_F16C ) cpu_features |= CPU_FEATURE_F16C;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_RDRAND) cpu_features |= CPU_FEATURE_RDRAND;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX2 ) cpu_features |= CPU_FEATURE_AVX2;
++ if (cpuid_leaf_1[ECX] & CPU_FEATURE_BIT_FMA3 ) cpu_features |= CPU_FEATURE_FMA3;
++ if (cpuid_leaf_e1[ECX] & CPU_FEATURE_BIT_LZCNT) cpu_features |= CPU_FEATURE_LZCNT;
++ if (cpuid_leaf_7 [EBX] & CPU_FEATURE_BIT_BMI1 ) cpu_features |= CPU_FEATURE_BMI1;
++ if (cpuid_leaf_7 [EBX] & CPU_FEATURE_BIT_BMI2 ) cpu_features |= CPU_FEATURE_BMI2;
++
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512F ) cpu_features |= CPU_FEATURE_AVX512F;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512DQ ) cpu_features |= CPU_FEATURE_AVX512DQ;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512PF ) cpu_features |= CPU_FEATURE_AVX512PF;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512ER ) cpu_features |= CPU_FEATURE_AVX512ER;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512CD ) cpu_features |= CPU_FEATURE_AVX512CD;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512BW ) cpu_features |= CPU_FEATURE_AVX512BW;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512IFMA) cpu_features |= CPU_FEATURE_AVX512IFMA;
++ if (cpuid_leaf_7[EBX] & CPU_FEATURE_BIT_AVX512VL ) cpu_features |= CPU_FEATURE_AVX512VL;
++ if (cpuid_leaf_7[ECX] & CPU_FEATURE_BIT_AVX512VBMI) cpu_features |= CPU_FEATURE_AVX512VBMI;
++
++ return cpu_features;
++ #elif defined(__ARM_NEON) || defined(__EMSCRIPTEN__)
++ /* emulated features with sse2neon */
++ return CPU_FEATURE_SSE|CPU_FEATURE_SSE2|CPU_FEATURE_XMM_ENABLED;
++ #else
++ /* Unknown CPU. */
++ return 0;
++ #endif
++ }
++
++ std::string stringOfCPUFeatures(int features)
++ {
++ std::string str;
++ if (features & CPU_FEATURE_XMM_ENABLED) str += "XMM ";
++ if (features & CPU_FEATURE_YMM_ENABLED) str += "YMM ";
++ if (features & CPU_FEATURE_ZMM_ENABLED) str += "ZMM ";
++ if (features & CPU_FEATURE_SSE ) str += "SSE ";
++ if (features & CPU_FEATURE_SSE2 ) str += "SSE2 ";
++ if (features & CPU_FEATURE_SSE3 ) str += "SSE3 ";
++ if (features & CPU_FEATURE_SSSE3 ) str += "SSSE3 ";
++ if (features & CPU_FEATURE_SSE41 ) str += "SSE4.1 ";
++ if (features & CPU_FEATURE_SSE42 ) str += "SSE4.2 ";
++ if (features & CPU_FEATURE_POPCNT) str += "POPCNT ";
++ if (features & CPU_FEATURE_AVX ) str += "AVX ";
++ if (features & CPU_FEATURE_F16C ) str += "F16C ";
++ if (features & CPU_FEATURE_RDRAND) str += "RDRAND ";
++ if (features & CPU_FEATURE_AVX2 ) str += "AVX2 ";
++ if (features & CPU_FEATURE_FMA3 ) str += "FMA3 ";
++ if (features & CPU_FEATURE_LZCNT ) str += "LZCNT ";
++ if (features & CPU_FEATURE_BMI1 ) str += "BMI1 ";
++ if (features & CPU_FEATURE_BMI2 ) str += "BMI2 ";
++ if (features & CPU_FEATURE_AVX512F) str += "AVX512F ";
++ if (features & CPU_FEATURE_AVX512DQ) str += "AVX512DQ ";
++ if (features & CPU_FEATURE_AVX512PF) str += "AVX512PF ";
++ if (features & CPU_FEATURE_AVX512ER) str += "AVX512ER ";
++ if (features & CPU_FEATURE_AVX512CD) str += "AVX512CD ";
++ if (features & CPU_FEATURE_AVX512BW) str += "AVX512BW ";
++ if (features & CPU_FEATURE_AVX512VL) str += "AVX512VL ";
++ if (features & CPU_FEATURE_AVX512IFMA) str += "AVX512IFMA ";
++ if (features & CPU_FEATURE_AVX512VBMI) str += "AVX512VBMI ";
++ return str;
++ }
++
++ std::string stringOfISA (int isa)
++ {
++ if (isa == SSE) return "SSE";
++ if (isa == SSE2) return "SSE2";
++ if (isa == SSE3) return "SSE3";
++ if (isa == SSSE3) return "SSSE3";
++ if (isa == SSE41) return "SSE4.1";
++ if (isa == SSE42) return "SSE4.2";
++ if (isa == AVX) return "AVX";
++ if (isa == AVX2) return "AVX2";
++ if (isa == AVX512) return "AVX512";
++ return "UNKNOWN";
++ }
++
++ bool hasISA(int features, int isa) {
++ return (features & isa) == isa;
++ }
++
++ std::string supportedTargetList (int features)
++ {
++ std::string v;
++ if (hasISA(features,SSE)) v += "SSE ";
++ if (hasISA(features,SSE2)) v += "SSE2 ";
++ if (hasISA(features,SSE3)) v += "SSE3 ";
++ if (hasISA(features,SSSE3)) v += "SSSE3 ";
++ if (hasISA(features,SSE41)) v += "SSE4.1 ";
++ if (hasISA(features,SSE42)) v += "SSE4.2 ";
++ if (hasISA(features,AVX)) v += "AVX ";
++ if (hasISA(features,AVXI)) v += "AVXI ";
++ if (hasISA(features,AVX2)) v += "AVX2 ";
++ if (hasISA(features,AVX512)) v += "AVX512 ";
++ return v;
++ }
++ }
++
++ ////////////////////////////////////////////////////////////////////////////////
++ /// Windows Platform
++ ////////////////////////////////////////////////////////////////////////////////
++
++ #if defined(__WIN32__)
++
++ #define WIN32_LEAN_AND_MEAN
++ #include <windows.h>
++ #include <psapi.h>
++
++ namespace embree
++ {
++ std::string getExecutableFileName() {
++ char filename[1024];
++ if (!GetModuleFileName(nullptr, filename, sizeof(filename)))
++ return std::string();
++ return std::string(filename);
++ }
++
++ unsigned int getNumberOfLogicalThreads()
++ {
++ static int nThreads = -1;
++ if (nThreads != -1) return nThreads;
++
++ typedef WORD (WINAPI *GetActiveProcessorGroupCountFunc)();
++ typedef DWORD (WINAPI *GetActiveProcessorCountFunc)(WORD);
++ HMODULE hlib = LoadLibrary("Kernel32");
++ GetActiveProcessorGroupCountFunc pGetActiveProcessorGroupCount = (GetActiveProcessorGroupCountFunc)GetProcAddress(hlib, "GetActiveProcessorGroupCount");
++ GetActiveProcessorCountFunc pGetActiveProcessorCount = (GetActiveProcessorCountFunc) GetProcAddress(hlib, "GetActiveProcessorCount");
++
++ if (pGetActiveProcessorGroupCount && pGetActiveProcessorCount)
++ {
++ int groups = pGetActiveProcessorGroupCount();
++ int totalProcessors = 0;
++ for (int i = 0; i < groups; i++)
++ totalProcessors += pGetActiveProcessorCount(i);
++ nThreads = totalProcessors;
++ }
++ else
++ {
++ SYSTEM_INFO sysinfo;
++ GetSystemInfo(&sysinfo);
++ nThreads = sysinfo.dwNumberOfProcessors;
++ }
++ assert(nThreads);
++ return nThreads;
++ }
++
++ int getTerminalWidth()
++ {
++ HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
++ if (handle == INVALID_HANDLE_VALUE) return 80;
++ CONSOLE_SCREEN_BUFFER_INFO info;
++ memset(&info,0,sizeof(info));
++ GetConsoleScreenBufferInfo(handle, &info);
++ return info.dwSize.X;
++ }
++
++ double getSeconds()
++ {
++ LARGE_INTEGER freq, val;
++ QueryPerformanceFrequency(&freq);
++ QueryPerformanceCounter(&val);
++ return (double)val.QuadPart / (double)freq.QuadPart;
++ }
++
++ void sleepSeconds(double t) {
++ Sleep(DWORD(1000.0*t));
++ }
++
++ size_t getVirtualMemoryBytes()
++ {
++ PROCESS_MEMORY_COUNTERS info;
++ GetProcessMemoryInfo( GetCurrentProcess( ), &info, sizeof(info) );
++ return (size_t)info.QuotaPeakPagedPoolUsage;
++ }
++
++ size_t getResidentMemoryBytes()
++ {
++ PROCESS_MEMORY_COUNTERS info;
++ GetProcessMemoryInfo( GetCurrentProcess( ), &info, sizeof(info) );
++ return (size_t)info.WorkingSetSize;
++ }
++ }
++ #endif
++
++ ////////////////////////////////////////////////////////////////////////////////
++ /// Linux Platform
++ ////////////////////////////////////////////////////////////////////////////////
++
++ #if defined(__LINUX__)
++
++ #include <stdio.h>
++ #include <unistd.h>
++
++ namespace embree
++ {
++ std::string getExecutableFileName()
++ {
++ std::string pid = "/proc/" + toString(getpid()) + "/exe";
++ char buf[4096];
++ memset(buf,0,sizeof(buf));
++ if (readlink(pid.c_str(), buf, sizeof(buf)-1) == -1)
++ return std::string();
++ return std::string(buf);
++ }
++
++ size_t getVirtualMemoryBytes()
++ {
++ size_t virt, resident, shared;
++ std::ifstream buffer("/proc/self/statm");
++ buffer >> virt >> resident >> shared;
++ return virt*sysconf(_SC_PAGE_SIZE);
++ }
++
++ size_t getResidentMemoryBytes()
++ {
++ size_t virt, resident, shared;
++ std::ifstream buffer("/proc/self/statm");
++ buffer >> virt >> resident >> shared;
++ return resident*sysconf(_SC_PAGE_SIZE);
++ }
++ }
++
++ #endif
++
++ ////////////////////////////////////////////////////////////////////////////////
++ /// FreeBSD Platform
++ ////////////////////////////////////////////////////////////////////////////////
++
++ #if defined (__FreeBSD__)
++
++ #include <sys/sysctl.h>
++
++ namespace embree
++ {
++ std::string getExecutableFileName()
++ {
++ const int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
++ char buf[4096];
++ memset(buf,0,sizeof(buf));
++ size_t len = sizeof(buf)-1;
++ if (sysctl(mib, 4, buf, &len, 0x0, 0) == -1)
++ return std::string();
++ return std::string(buf);
++ }
++
++ size_t getVirtualMemoryBytes() {
++ return 0;
++ }
++
++ size_t getResidentMemoryBytes() {
++ return 0;
++ }
++ }
++
++ #endif
++
++ ////////////////////////////////////////////////////////////////////////////////
++ /// Mac OS X Platform
++ ////////////////////////////////////////////////////////////////////////////////
++
++ #if defined(__MACOSX__)
++
++ #include <mach-o/dyld.h>
++
++ namespace embree
++ {
++ std::string getExecutableFileName()
++ {
++ char buf[4096];
++ uint32_t size = sizeof(buf);
++ if (_NSGetExecutablePath(buf, &size) != 0)
++ return std::string();
++ return std::string(buf);
++ }
++
++ size_t getVirtualMemoryBytes() {
++ return 0;
++ }
++
++ size_t getResidentMemoryBytes() {
++ return 0;
++ }
++ }
++
++ #endif
++
++ ////////////////////////////////////////////////////////////////////////////////
++ /// Unix Platform
++ ////////////////////////////////////////////////////////////////////////////////
++
++ #if defined(__UNIX__)
++
++ #include <unistd.h>
++ #include <sys/ioctl.h>
++ #include <sys/time.h>
++ #include <pthread.h>
++
++ #if defined(__EMSCRIPTEN__)
++ #include <emscripten.h>
++ #endif
++
++ namespace embree
++ {
++ unsigned int getNumberOfLogicalThreads()
++ {
++ static int nThreads = -1;
++ if (nThreads != -1) return nThreads;
++
++ #if defined(__MACOSX__) || defined(__ANDROID__)
++ nThreads = sysconf(_SC_NPROCESSORS_ONLN); // does not work in Linux LXC container
++ assert(nThreads);
++ #elif defined(__EMSCRIPTEN__)
++ // WebAssembly supports pthreads, but not pthread_getaffinity_np. Get the number of logical
++ // threads from the browser or Node.js using JavaScript.
++ nThreads = MAIN_THREAD_EM_ASM_INT({
++ const isBrowser = typeof window !== 'undefined';
++ const isNode = typeof process !== 'undefined' && process.versions != null &&
++ process.versions.node != null;
++ if (isBrowser) {
++ // Return 1 if the browser does not expose hardwareConcurrency.
++ return window.navigator.hardwareConcurrency || 1;
++ } else if (isNode) {
++ return require('os').cpus().length;
++ } else {
++ return 1;
++ }
++ });
++ #else
++ cpu_set_t set;
++ if (pthread_getaffinity_np(pthread_self(), sizeof(set), &set) == 0)
++ nThreads = CPU_COUNT(&set);
++ #endif
++
++ assert(nThreads);
++ return nThreads;
++ }
++
++ int getTerminalWidth()
++ {
++ struct winsize info;
++ if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &info) < 0) return 80;
++ return info.ws_col;
++ }
++
++ double getSeconds() {
++ struct timeval tp; gettimeofday(&tp,nullptr);
++ return double(tp.tv_sec) + double(tp.tv_usec)/1E6;
++ }
++
++ void sleepSeconds(double t) {
++ usleep(1000000.0*t);
++ }
++ }
++ #endif
++