// Copyright 2009-2020 Intel Corporation // SPDX-License-Identifier: Apache-2.0 #include "sysinfo.h" #include "intrinsics.h" #include "string.h" #include "ref.h" #if defined(__FREEBSD__) #include #include typedef cpuset_t cpu_set_t; #endif //////////////////////////////////////////////////////////////////////////////// /// All Platforms //////////////////////////////////////////////////////////////////////////////// namespace embree { NullTy null; std::string getPlatformName() { #if defined(__LINUX__) && !defined(__X86_64__) return "Linux (32bit)"; #elif defined(__LINUX__) && defined(__X86_64__) return "Linux (64bit)"; #elif defined(__FREEBSD__) && !defined(__X86_64__) return "FreeBSD (32bit)"; #elif defined(__FREEBSD__) && defined(__X86_64__) return "FreeBSD (64bit)"; #elif defined(__CYGWIN__) && !defined(__X86_64__) return "Cygwin (32bit)"; #elif defined(__CYGWIN__) && defined(__X86_64__) return "Cygwin (64bit)"; #elif defined(__WIN32__) && !defined(__X86_64__) return "Windows (32bit)"; #elif defined(__WIN32__) && defined(__X86_64__) return "Windows (64bit)"; #elif defined(__MACOSX__) && !defined(__X86_64__) return "Mac OS X (32bit)"; #elif defined(__MACOSX__) && defined(__X86_64__) return "Mac OS X (64bit)"; #elif defined(__UNIX__) && !defined(__X86_64__) return "Unix (32bit)"; #elif defined(__UNIX__) && defined(__X86_64__) 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() { 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; } CPU getCPUModel() { 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; 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::UNKNOWN : return "Unknown CPU"; } return "Unknown CPU (error)"; } /* 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) __noinline int64_t get_xcr0() { #if defined (__WIN32__) 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 } int getCPUFeatures() { /* 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; } 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 == AVX512KNL) return "AVX512KNL"; if (isa == AVX512SKX) return "AVX512SKX"; 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,AVX512KNL)) v += "AVX512KNL "; if (hasISA(features,AVX512SKX)) v += "AVX512SKX "; return v; } } //////////////////////////////////////////////////////////////////////////////// /// Windows Platform //////////////////////////////////////////////////////////////////////////////// #if defined(__WIN32__) #define WIN32_LEAN_AND_MEAN #include #include 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 #include 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 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 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 #include #include #include namespace embree { unsigned int getNumberOfLogicalThreads() { static int nThreads = -1; if (nThreads != -1) return nThreads; #if defined(__MACOSX__) nThreads = sysconf(_SC_NPROCESSORS_ONLN); // does not work in Linux LXC container assert(nThreads); #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