最近在做一个网管软件用C语言获取的系统的一些参数，其中包括系统时间，系统运行时间，系统版本，CPU利用率，内存使用率，硬盘使用率，CPU风扇转速等参数，整理代码如下：
#include <stdio.h> #include <Windows.h> #include<time.h> #include <tchar.h> #define DIV 1024 #define WIDTH 7 #define GB(x) (((x).HighPart << 2) + ((DWORD)(x).LowPart) / 1024.0 / 1024.0 / 1024.0) #pragma warning(disable: 4996) #define true 1 typedef unsigned char U_CHAR; //获取系统时间 int getSystemTime(char* buffer){ char buf[128]; time_t rawtime; struct tm * timeinfo; time(&rawtime); timeinfo = localtime(&rawtime); strftime(buf, sizeof(buf), "Now is %Y-%m-%d %H:%M:%S", timeinfo); strcpy(buffer,buf); } //CPU利用率 FILETIME m_preidleTime; FILETIME m_prekernelTime; FILETIME m_preuserTime; __int64 CompareFileTime2(FILETIME time1, FILETIME time2) { __int64 a = time1.dwHighDateTime << 32 | time1.dwLowDateTime; __int64 b = time2.dwHighDateTime << 32 | time2.dwLowDateTime; return b - a; } void GetCpuUseage() { GetSystemTimes(&m_preidleTime, &m_prekernelTime, &m_preuserTime); Sleep(1000); } double CpuUseage() { FILETIME idleTime; FILETIME kernelTime; FILETIME userTime; GetSystemTimes(&idleTime, &kernelTime, &userTime); int idle = CompareFileTime2(m_preidleTime, idleTime); int kernel = CompareFileTime2(m_prekernelTime, kernelTime); int user = CompareFileTime2(m_preuserTime, userTime); if (kernel + user == 0) return 0.0; //（总的时间-空闲时间）/总的时间=占用cpu的时间就是使用率 double cpu = abs((kernel + user - idle) * 100 / (kernel + user)); m_preidleTime = idleTime; m_prekernelTime = kernelTime; m_preuserTime = userTime; return cpu; } //读取操作系统的名称 void GetSystemName(char* osname) { char buf[128]; SYSTEM_INFO info; //用SYSTEM_INFO结构判断64位AMD处理器 GetSystemInfo(&info); //调用GetSystemInfo函数填充结构 OSVERSIONINFOEX os; os.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX); strcpy(buf, "unknown OperatingSystem."); if (GetVersionEx((OSVERSIONINFO *)&os)) { //下面根据版本信息判断操作系统名称 switch (os.dwMajorVersion)//判断主版本号 { case 4: switch (os.dwMinorVersion)//判断次版本号 { case 0: if (os.dwPlatformId == VER_PLATFORM_WIN32_NT) strcpy(buf, "Microsoft Windows NT 4.0"); //1996年7月发布 else if (os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) strcpy(buf, "Microsoft Windows 95"); break; case 10: strcpy(buf, "Microsoft Windows 98"); break; case 90: strcpy(buf, "Microsoft Windows Me"); break; } break; case 5: switch (os.dwMinorVersion) //再比较dwMinorVersion的值 { case 0: strcpy(buf, "Microsoft Windows 2000"); //1999年12月发布 break; case 1: strcpy(buf, "Microsoft Windows XP"); //2001年8月发布 break; case 2: if (os.wProductType == VER_NT_WORKSTATION && info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) { strcpy(buf, "Microsoft Windows XP Professional x64 Edition"); } else if (GetSystemMetrics(SM_SERVERR2) == 0) strcpy(buf, "Microsoft Windows Server 2003"); //2003年3月发布 else if (GetSystemMetrics(SM_SERVERR2) != 0) strcpy(buf, "Microsoft Windows Server 2003 R2"); break; } break; case 6: switch (os.dwMinorVersion) { case 0: if (os.wProductType == VER_NT_WORKSTATION) strcpy(buf, "Microsoft Windows Vista"); else strcpy(buf, "Microsoft Windows Server 2008"); //服务器版本 break; case 1: if (os.wProductType == VER_NT_WORKSTATION) strcpy(buf, "Microsoft Windows 7"); else strcpy(buf, "Microsoft Windows Server 2008 R2"); break; } break; } }//if(GetVersionEx((OSVERSIONINFO *)&os)) strcpy(osname, buf); } int main(){ //获取系统时间 char buffer[128]; getSystemTime(buffer); puts(buffer); //系统运行时间 clock_t start, finish; double duration; start = clock(); while (true) { finish = clock(); duration = (double)(finish - start) / CLOCKS_PER_SEC; Sleep(1000); printf("%.0f 秒\n", duration); } //系统版本名称 char osname[20]; GetSystemName(osname); printf("%s\n", osname); //CPU利用率 while (true) { U_CHAR sysStateCpu[5]; double cpu = CpuUseage(); sprintf((char*)sysStateCpu, "%.2lf", cpu); printf("CPU使用率：%s%%\n", sysStateCpu); Sleep(1000); } //内存使用率 char bufPreCPU[5]; MEMORYSTATUSEX statex; statex.dwLength = sizeof(statex); GlobalMemoryStatusEx(&statex); sprintf(bufPreCPU, "%ld%%\n", statex.dwMemoryLoad); puts(bufPreCPU); //硬盘使用率 调用windows API ULARGE_INTEGER FreeBytesAvailableC, TotalNumberOfBytesC, TotalNumberOfFreeBytesC; ULARGE_INTEGER FreeBytesAvailableD, TotalNumberOfBytesD, TotalNumberOfFreeBytesD; ULARGE_INTEGER FreeBytesAvailableE, TotalNumberOfBytesE, TotalNumberOfFreeBytesE; ULARGE_INTEGER FreeBytesAvailableF, TotalNumberOfBytesF, TotalNumberOfFreeBytesF; GetDiskFreeSpaceEx(_T("C:"), &FreeBytesAvailableC, &TotalNumberOfBytesC, &TotalNumberOfFreeBytesC); GetDiskFreeSpaceEx(_T("D:"), &FreeBytesAvailableD, &TotalNumberOfBytesD, &TotalNumberOfFreeBytesD); GetDiskFreeSpaceEx(_T("E:"), &FreeBytesAvailableE, &TotalNumberOfBytesE, &TotalNumberOfFreeBytesE); GetDiskFreeSpaceEx(_T("F:"), &FreeBytesAvailableF, &TotalNumberOfBytesF, &TotalNumberOfFreeBytesF); /*参数 类型及说明 lpRootPathName String，不包括卷名的磁盘根路径名 lpFreeBytesAvailableToCaller LARGE_INTEGER，指定一个变量，用于容纳调用者可用的字节数量 lpTotalNumberOfBytes LARGE_INTEGER，指定一个变量，用于容纳磁盘上的总字节数 lpTotalNumberOfFreeBytes LARGE_INTEGER，指定一个变量，用于容纳磁盘上可用的字节数 适用平台 Windows 95 OSR2，Windows NT 4.0*/ float totalHardDisk = GB(TotalNumberOfBytesC) + GB(TotalNumberOfBytesD) + GB(TotalNumberOfBytesE) + GB(TotalNumberOfBytesF); float freeHardDisk = GB(TotalNumberOfFreeBytesC) + GB(TotalNumberOfFreeBytesD) + GB(TotalNumberOfFreeBytesE) + GB(TotalNumberOfFreeBytesF); float hardDiskUsage = 1- freeHardDisk / totalHardDisk; //CPU风扇转速 printf("hello world!\n"); system("pause"); }
