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corinfo
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ColumbusTech 2018-11-22 14:10:23 +03:00
parent b5e2da2d14
commit 8c621c33c9
1 changed files with 57 additions and 3 deletions
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60
corinfo.h
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@ -35,6 +35,10 @@
#include <unistd.h>
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdint.h>
@ -87,6 +91,12 @@ int corinfo_GetInfo(struct corinfo* info);
: "a" (command), "c" (0));
#endif
#ifdef _WIN32
#ifdef _MSC_VER
// __cpuid(cpu, command) is actually defined in MSVC
#endif
#endif
static void __null_corinfo(struct corinfo* info);
static void __vendor_string(int cpu[4], uint8_t* string);
static void __brand_string(int cpu[4], uint8_t* string);
@ -108,8 +118,6 @@ static void __extensions(int cpu[4], struct corinfo* info);
__brand_string(cpu, info->BrandString);
__extensions(cpu, info);
info->CpuCount = sysconf(_SC_NPROCESSORS_ONLN);
// /proc/cpuinfo reading is necessary for CPUs not implementing CPUID 0x16 code.
FILE* f = fopen("/proc/cpuinfo", "rb");
if (f == NULL) return -1;
@ -117,12 +125,13 @@ static void __extensions(int cpu[4], struct corinfo* info);
char* line = NULL;
size_t line_length = 0;
ssize_t line_read = 0;
size_t MHz;
while ((line_read = getline(&line, &line_length, f)) != -1)
{
if (memcmp(line, "cpu MHz", 7) == 0)
{
info->CpuFrequency = atoi(strchr(line, ':') + 2);
MHz = atoi(strchr(line, ':') + 2);
break;
}
}
@ -131,6 +140,9 @@ static void __extensions(int cpu[4], struct corinfo* info);
fclose(f);
info->CpuCount = sysconf(_SC_NPROCESSORS_ONLN);
info->CpuFrequency = MHz;
info->RamSize = sys.totalram / 1024;
info->RamFree = sys.freeram / 1024;
info->RamUsage = 100 - (info->RamFree / (float)info->RamSize) * 100;
@ -144,7 +156,49 @@ static void __extensions(int cpu[4], struct corinfo* info);
#ifdef _WIN32
int corinfo_GetInfo(struct corinfo* info)
{
if (info == NULL) return -1;
__null_corinfo(info);
SYSTEM_INFO sys;
MEMORYSTATUSEX mem;
mem.dwLength = sizeof(mem);
GetSystemInfo(&sys);
GlobalMemoryStatusEx(&mem);
int cpu[4];
// CPUID 0x00 code returns in EAX maximum CPUID code and vendor string in EBX, EDX, ECX.
__cpuid(cpu, 0x00000000);
__vendor_string(cpu, info->VendorString);
__brand_string(cpu, info->BrandString);
__extensions(cpu, info);
// Some WinAPI hell.
wchar_t Buffer[_MAX_PATH];
DWORD BufSize = _MAX_PATH;
DWORD dwMHz = _MAX_PATH;
HKEY hKey;
long lError = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0", 0, KEY_READ, &hKey);
if (lError != ERROR_SUCCESS)
{
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, lError, 0, Buffer, _MAX_PATH, 0);
wprintf(Buffer);
return 0;
}
RegQueryValueEx(hKey, L"~MHz", NULL, NULL, (LPBYTE)&dwMHz, &BufSize);
info->CpuCount = sys.dwNumberOfProcessors;
info->CpuFrequency = dwMHz;
info->RamSize = mem.ullTotalPhys / 1024;
info->RamFree = mem.ullAvailPhys / 1024;
info->RamUsage = mem.dwMemoryLoad;
return 0;
}
#endif