Library
ColumbusTech
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26560b92cd
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/*
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* Part of corinfo, a library for obtaining CPU, RAM and GPU information.
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* https://github.com/ColumbusUtrigas/corinfo
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*
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* Copyright (c) 2018 ColumbusUtrigas.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef CORINFO_H
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#define CORINFO_H
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#if !defined(__linux) && !defined(_WIN32)
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#error "Unsupported platform"
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#endif
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#ifdef __linux
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#include <sys/sysinfo.h>
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdlib.h>
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/*!
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* @file corinfo.h
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*/
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struct corinfo
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{
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uint32_t CpuCount;
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uint32_t CpuFrequency;
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uint8_t VendorString[12];
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uint8_t BrandString[48];
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uint8_t MMX;
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uint8_t SSE;
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uint8_t SSE2;
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uint8_t SSE3;
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uint8_t SSE41;
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uint8_t SSE42;
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uint8_t AVX;
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uint32_t RamSize;
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uint32_t RamFree;
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uint32_t RamUsage;
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};
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int corinfo_GetInfo(struct corinfo* info);
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#ifdef __linux
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#define __cpuid(cpu, command) \
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asm volatile \
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("cpuid" : "=a" (cpu[0]), "=b" (cpu[1]), "=c" (cpu[2]), "=d" (cpu[3]) \
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: "a" (command), "c" (0));
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#endif
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static void __null_corinfo(struct corinfo* info);
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static void __vendor_string(int cpu[4], uint8_t* string);
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static void __brand_string(int cpu[4], uint8_t* string);
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static void __extensions(int cpu[4], struct corinfo* info);
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#ifdef __linux
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int corinfo_GetInfo(struct corinfo* info)
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{
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if (info == NULL) return -1;
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__null_corinfo(info);
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struct sysinfo sys;
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if (sysinfo(&sys) == -1) return -1;
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int cpu[4];
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__cpuid(cpu, 0x00000000);
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__vendor_string(cpu, info->VendorString);
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__brand_string(cpu, info->BrandString);
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__extensions(cpu, info);
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info->CpuCount = sysconf(_SC_NPROCESSORS_ONLN);
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FILE* f = fopen("/proc/cpuinfo", "rb");
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if (f == NULL) return -1;
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char* line = NULL;
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size_t line_length = 0;
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size_t line_read = 0;
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while ((line_read = getline(&line, &line_length, f)) != -1)
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{
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if (memcmp(line, "cpu MHz", 7) == 0)
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{
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info->CpuFrequency = atoi(strchr(line, ':') + 2);
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break;
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}
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}
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if (line) free(line);
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fclose(f);
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info->RamSize = sys.totalram / 1024;
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info->RamFree = sys.freeram / 1024;
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info->RamUsage = 100 - (info->RamFree / (float)info->RamSize) * 100;
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return 0;
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}
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#endif
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#ifdef _WIN32
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int corinfo_GetInfo(struct corinfo* info)
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{
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}
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#endif
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void __null_corinfo(struct corinfo* info)
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{
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info->CpuCount = 0;
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info->CpuFrequency = 0;
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for (int i = 0; i < 12; i++) info->VendorString[i] = 0;
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for (int i = 0; i < 48; i++) info->BrandString[i] = 0;
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info->MMX = 0;
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info->SSE = 0;
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info->SSE2 = 0;
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info->SSE3 = 0;
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info->SSE41 = 0;
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info->SSE42 = 0;
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info->AVX = 0;
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info->RamSize = 0;
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info->RamFree = 0;
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info->RamUsage = 0;
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}
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void __vendor_string(int cpu[4], uint8_t* string)
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{
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for (int i = 0; i < 4; i++)
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{
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string[i + 0] = (cpu[1] >> (i * 8)) & 0xFF;
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string[i + 4] = (cpu[3] >> (i * 8)) & 0xFF;
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string[i + 8] = (cpu[2] >> (i * 8)) & 0xFF;
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}
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}
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void __brand_string(int cpu[4], uint8_t* string)
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{
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int commands[3] = { 0x80000002, 0x80000003, 0x80000004 };
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int offset = 0;
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for (int i = 0; i < 3; i++)
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{
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__cpuid(cpu, commands[i]);
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for (int j = 0; j < 4; j++)
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{
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string[offset + j + 0] = (cpu[0] >> (j * 8)) & 0xFF;
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string[offset + j + 4] = (cpu[1] >> (j * 8)) & 0xFF;
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string[offset + j + 8] = (cpu[2] >> (j * 8)) & 0xFF;
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string[offset + j + 12] = (cpu[3] >> (j * 8)) & 0xFF;
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}
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offset += 16;
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}
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}
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void __extensions(int cpu[4], struct corinfo* info)
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{
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__cpuid(cpu, 0x00000001);
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info->MMX = (cpu[3] >> 23) & 0x1;
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info->SSE = (cpu[3] >> 25) & 0x1;
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info->SSE2 = (cpu[3] >> 26) & 0x1;
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info->SSE3 = (cpu[2] >> 0) & 0x1;
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info->SSE41 = (cpu[2] >> 19) & 0x1;
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info->SSE42 = (cpu[2] >> 20) & 0x1;
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info->AVX = (cpu[2] >> 28) & 0x1;
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}
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#undef __cpuid
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#endif
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