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81 lines
1.7 KiB
C++
81 lines
1.7 KiB
C++
#include "sysinfo.h"
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#include "StrFmt.h"
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#ifdef _WIN32
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#include "windows.h"
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#else
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#include <unistd.h>
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#endif
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bool utils::has_ssse3()
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{
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static const bool g_value = get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x200;
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return g_value;
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}
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bool utils::has_avx()
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{
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static const bool g_value = get_cpuid(0, 0)[0] >= 0x1 && get_cpuid(1, 0)[2] & 0x10000000;
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return g_value;
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}
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bool utils::has_rtm()
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{
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// Check RTM and MPX extensions in order to filter out TSX on Haswell CPUs
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static const bool g_value = get_cpuid(0, 0)[0] >= 0x7 && (get_cpuid(7, 0)[1] & 0x4800) == 0x4800;
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return g_value;
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}
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std::string utils::get_system_info()
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{
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std::string result;
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std::string brand;
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if (get_cpuid(0x80000000, 0)[0] >= 0x80000004)
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{
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for (u32 i = 0; i < 3; i++)
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{
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brand.append(reinterpret_cast<const char*>(get_cpuid(0x80000002 + i, 0).data()), 16);
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}
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}
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else
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{
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brand = "Unknown CPU";
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}
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brand.erase(0, brand.find_first_not_of(' '));
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brand.erase(brand.find_last_not_of(' ') + 1);
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while (auto found = brand.find(" ") + 1)
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{
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brand.erase(brand.begin() + found);
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}
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#ifdef _WIN32
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::SYSTEM_INFO sysInfo;
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::GetNativeSystemInfo(&sysInfo);
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::MEMORYSTATUSEX memInfo;
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memInfo.dwLength = sizeof(memInfo);
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::GlobalMemoryStatusEx(&memInfo);
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const u32 num_proc = sysInfo.dwNumberOfProcessors;
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const u64 mem_total = memInfo.ullTotalPhys;
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#else
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const u32 num_proc = ::sysconf(_SC_NPROCESSORS_ONLN);
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const u64 mem_total = ::sysconf(_SC_PHYS_PAGES) * ::sysconf(_SC_PAGE_SIZE);
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#endif
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fmt::append(result, "%s | %d Threads | %.2f GiB RAM", brand, num_proc, mem_total / (1024.0f * 1024 * 1024));
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if (has_avx())
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{
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result += " | AVX+";
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}
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if (has_rtm())
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{
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result += " | TSX";
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}
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return result;
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}
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