Win32API システム情報を取得する GetSystemInfo
システム情報を取得するには、GetSystemInfo関数を用いる。
GetSystemInfoのプロトタイプ
VOID GetSystemInfo( LPSYSTEM_INFO lpSystemInfo // システム情報 );
SYSTEM_INFO構造体の定義（winbase.h）
typedef struct _SYSTEM_INFO {
union {
DWORD dwOemId; // Obsolete field...do not use
struct {
WORD wProcessorArchitecture;
WORD wReserved;
};
};
DWORD dwPageSize;
LPVOID lpMinimumApplicationAddress;
LPVOID lpMaximumApplicationAddress;
DWORD_PTR dwActiveProcessorMask;
DWORD dwNumberOfProcessors;
DWORD dwProcessorType;
DWORD dwAllocationGranularity;
WORD wProcessorLevel;
WORD wProcessorRevision;
} SYSTEM_INFO, *LPSYSTEM_INFO;使用例
#include <windows.h>
#include <stdio.h>
const char *GetProcessorTypeAsString(DWORD dwProcessorType)
{
switch (dwProcessorType) {
case PROCESSOR_INTEL_386:
return "PROCESSOR_INTEL_386";
case PROCESSOR_INTEL_486:
return "PROCESSOR_INTEL_486";
case PROCESSOR_INTEL_PENTIUM:
return "PROCESSOR_INTEL_PENTIUM";
case PROCESSOR_INTEL_IA64:
return "PROCESSOR_INTEL_IA64";
case PROCESSOR_AMD_X8664:
return "PROCESSOR_AMD_X8664";
case PROCESSOR_MIPS_R4000:// incl R4101 & R3910 for Windows CE
return "PROCESSOR_MIPS_R4000";
case PROCESSOR_ALPHA_21064:
return "PROCESSOR_ALPHA_21064";
case PROCESSOR_PPC_601:
return "PROCESSOR_PPC_601";
case PROCESSOR_PPC_603:
return "PROCESSOR_PPC_603";
case PROCESSOR_PPC_604:
return "PROCESSOR_PPC_604";
case PROCESSOR_PPC_620:
return "PROCESSOR_PPC_620";
case PROCESSOR_HITACHI_SH3: // Windows CE
return "PROCESSOR_HITACHI_SH3";
case PROCESSOR_HITACHI_SH3E: // Windows CE
return "PROCESSOR_HITACHI_SH3E";
case PROCESSOR_HITACHI_SH4: // Windows CE
return "PROCESSOR_HITACHI_SH4";
case PROCESSOR_MOTOROLA_821: // Windows CE
return "PROCESSOR_MOTOROLA_821";
case PROCESSOR_SHx_SH3: // Windows CE
return "PROCESSOR_SHx_SH3";
case PROCESSOR_SHx_SH4: // Windows CE
return "PROCESSOR_SHx_SH4";
case PROCESSOR_STRONGARM: // Windows CE - 0xA11
return "PROCESSOR_STRONGARM";
case PROCESSOR_ARM720: // Windows CE - 0x720
return "PROCESSOR_ARM720";
case PROCESSOR_ARM820: // Windows CE - 0x820
return "PROCESSOR_ARM820";
case PROCESSOR_ARM920: // Windows CE - 0x920
return "PROCESSOR_ARM920";
case PROCESSOR_ARM_7TDMI: // Windows CE
return "PROCESSOR_ARM_7TDMI";
case PROCESSOR_OPTIL: // MSIL
return "PROCESSOR_OPTIL";
default:
return "Unknown";
}
}
const char *GetProcessorArchitechtureAsString(WORD wProcessorArchitecture)
{
switch (wProcessorArchitecture) {
case PROCESSOR_ARCHITECTURE_INTEL:
return "PROCESSOR_ARCHITECTURE_INTEL";
case PROCESSOR_ARCHITECTURE_MIPS:
return "PROCESSOR_ARCHITECTURE_MIPS";
case PROCESSOR_ARCHITECTURE_ALPHA:
return "PROCESSOR_ARCHITECTURE_ALPHA";
case PROCESSOR_ARCHITECTURE_PPC:
return "PROCESSOR_ARCHITECTURE_PPC";
case PROCESSOR_ARCHITECTURE_SHX:
return "PROCESSOR_ARCHITECTURE_SHX";
case PROCESSOR_ARCHITECTURE_ARM:
return "PROCESSOR_ARCHITECTURE_ARM";
case PROCESSOR_ARCHITECTURE_IA64:
return "PROCESSOR_ARCHITECTURE_IA64";
case PROCESSOR_ARCHITECTURE_ALPHA64:
return "PROCESSOR_ARCHITECTURE_ALPHA64";
case PROCESSOR_ARCHITECTURE_MSIL:
return "PROCESSOR_ARCHITECTURE_MSIL";
case PROCESSOR_ARCHITECTURE_AMD64:
return "PROCESSOR_ARCHITECTURE_AMD64";
case PROCESSOR_ARCHITECTURE_IA32_ON_WIN64:
return "PROCESSOR_ARCHITECTURE_IA32_ON_WIN64";
case PROCESSOR_ARCHITECTURE_UNKNOWN:
return "PROCESSOR_ARCHITECTURE_UNKNOWN";
default:
return "Unknown";
}
}
const char *GetProcessorLevelAsString(WORD wProcessorArchitecture,
WORD wProcessorLevel)
{
if (wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL) {
switch (wProcessorLevel) {
case 3:
return "80386";
case 4:
return "i486";
case 5:
return "Pentium";
case 6:
return "Intel Pentium Pro, II, III or 4";
default:
return "Unknown";
}
} else if (wProcessorArchitecture == PROCESSOR_ARCHITECTURE_MIPS) {
if (wProcessorLevel & 0x0004) {
return "MIPS R4000";
} else {
return "Unknown";
}
} else if (wProcessorArchitecture == PROCESSOR_ARCHITECTURE_ALPHA) {
switch (wProcessorLevel) {
case 21064:
return "Alpha 21064";
case 21066:
return "Alpha 21066";
case 21164:
return "Alpha 21164";
default:
return "Unknown";
}
} else if (wProcessorArchitecture == PROCESSOR_ARCHITECTURE_PPC) {
switch (wProcessorLevel) {
case 1:
return "PPC 601";
case 3:
return "PPC 603";
case 4:
return "PPC 604";
case 6:
return "PPC 603+";
case 9:
return "PPC 604+";
case 20:
return "PPC 620";
default:
return "Unknown";
}
} else {
return "Unkown";
}
}
int main()
{
SYSTEM_INFO systemInfo;
GetSystemInfo(&systemInfo);
printf("dwActiveProcessorMask = %u\n",
systemInfo.dwActiveProcessorMask);
printf("dwAllocationGranularity = %u\n",
systemInfo.dwAllocationGranularity);
printf("dwNumberOfProcessors = %u\n",
systemInfo.dwNumberOfProcessors);
printf("dwOemId = %u\n",
systemInfo.dwOemId);
printf("dwPageSize = %u\n",
systemInfo.dwPageSize);
printf("dwProcessorType = %s\n",
GetProcessorTypeAsString(systemInfo.dwProcessorType));
printf("lpMaximumApplicationAddress = %p\n",
systemInfo.lpMaximumApplicationAddress);
printf("lpMinimumApplicationAddress = %p\n",
systemInfo.lpMinimumApplicationAddress);
printf("wProcessorArchitecture = %s\n",
GetProcessorArchitechtureAsString(systemInfo.wProcessorArchitecture));
printf("wProcessorLevel = %s\n",
GetProcessorLevelAsString(
systemInfo.wProcessorArchitecture,
systemInfo.wProcessorLevel));
printf("wProcessorRevision = %u\n",
systemInfo.wProcessorRevision);
return 0;
}
