//1.获取Windows系统内存使用率
- //windows 内存 使用率
- DWORD getWin_MemUsage(){
- MEMORYSTATUS ms;
- ::GlobalMemoryStatus(&ms);
- return ms.dwMemoryLoad;
- }
//2.获取windowsCPU使用率
- __int64 CompareFileTime(FILETIME time1, FILETIME time2)
- {
- __int64 a = time1.dwHighDateTime << 32 | time1.dwLowDateTime;
- __int64 b = time2.dwHighDateTime << 32 | time2.dwLowDateTime;
- return (b - a);
- }
- //WIN CPU使用情况
- void getWin_CpuUsage(){
- HANDLE hEvent;
- BOOL res;
- FILETIME preidleTime;
- FILETIME prekernelTime;
- FILETIME preuserTime;
- FILETIME idleTime;
- FILETIME kernelTime;
- FILETIME userTime;
- res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
- preidleTime = idleTime;
- prekernelTime = kernelTime;
- preuserTime = userTime;
- hEvent = CreateEventA(NULL, FALSE, FALSE, NULL); // 初始值为 nonsignaled ,并且每次触发后自动设置为nonsignaled
- while (true){
- WaitForSingleObject(hEvent, 1000);
- res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
- __int64 idle = CompareFileTime(preidleTime, idleTime);
- __int64 kernel = CompareFileTime(prekernelTime, kernelTime);
- __int64 user = CompareFileTime(preuserTime, userTime);
- __int64 cpu = (kernel + user - idle) * 100 / (kernel + user);
- __int64 cpuidle = (idle)* 100 / (kernel + user);
- cout << "CPU利用率:" << cpu << "%" << " CPU空闲率:" << cpuidle << "%" << endl;
- preidleTime = idleTime;
- prekernelTime = kernelTime;
- preuserTime = userTime;
- }
- }
- //获取 WIN 硬盘使用情况
- int getWin_DiskUsage(){
- int DiskCount = 0;
- DWORD DiskInfo = GetLogicalDrives();
- //利用GetLogicalDrives()函数可以获取系统中逻辑驱动器的数量,函数返回的是一个32位无符号整型数据。
- while (DiskInfo)//通过循环操作查看每一位数据是否为1,如果为1则磁盘为真,如果为0则磁盘不存在。
- {
- if (DiskInfo & 1)//通过位运算的逻辑与操作,判断是否为1
- {
- ++DiskCount;
- }
- DiskInfo = DiskInfo >> 1;//通过位运算的右移操作保证每循环一次所检查的位置向右移动一位。
- //DiskInfo = DiskInfo/2;
- }
- cout << "Logical Disk Number:" << DiskCount << endl;
- //-----------------------------------------------------------------------------------------
- int DSLength = GetLogicalDriveStrings(0, NULL);
- //通过GetLogicalDriveStrings()函数获取所有驱动器字符串信息长度。
- char* DStr = new char[DSLength];//用获取的长度在堆区创建一个c风格的字符串数组
- GetLogicalDriveStrings(DSLength, (LPTSTR)DStr);
- //通过GetLogicalDriveStrings将字符串信息复制到堆区数组中,其中保存了所有驱动器的信息。
- int DType;
- int si = 0;
- BOOL fResult;
- unsigned _int64 i64FreeBytesToCaller;
- unsigned _int64 i64TotalBytes;
- unsigned _int64 i64FreeBytes;
- for (int i = 0; i<DSLength / 4; ++i)//为了显示每个驱动器的状态,则通过循环输出实现,由于DStr内部保存的数据是A:\NULLB:\NULLC:\NULL,这样的信息,所以DSLength/4可以获得具体大循环范围
- {
- char dir[3] = { DStr[si], ':', '\\' };
- cout << dir;
- DType = GetDriveType(DStr + i * 4);
- //GetDriveType函数,可以获取驱动器类型,参数为驱动器的根目录
- if (DType == DRIVE_FIXED)
- {
- cout << "Hard Disk";
- }
- else if (DType == DRIVE_CDROM)
- {
- cout << "CD-ROM";
- }
- else if (DType == DRIVE_REMOVABLE)
- {
- cout << "Removable Disk";
- }
- else if (DType == DRIVE_REMOTE)
- {
- cout << "Network Disk";
- }
- else if (DType == DRIVE_RAMDISK)
- {
- cout << "Virtual RAM Disk";
- }
- else if (DType == DRIVE_UNKNOWN)
- {
- cout << "Unknown Device";
- }
- fResult = GetDiskFreeSpaceEx(
- dir,
- (PULARGE_INTEGER)&i64FreeBytesToCaller,
- (PULARGE_INTEGER)&i64TotalBytes,
- (PULARGE_INTEGER)&i64FreeBytes);
- //GetDiskFreeSpaceEx函数,可以获取驱动器磁盘的空间状态,函数返回的是个BOOL类型数据
- if (fResult)//通过返回的BOOL数据判断驱动器是否在工作状态
- {
- cout << " totalspace:" << (float)i64TotalBytes / 1024 / 1024 << " MB";//磁盘总容量
- cout << " freespace:" << (float)i64FreeBytesToCaller / 1024 / 1024 << " MB";//磁盘剩余空间
- }
- else
- {
- cout << " 设备未准备好";
- }
- cout << endl;
- si += 4;
- }
- return 0;
- }
//main函数
- int main( int argc, char **argv )
- {
- //+++======================获取windows 内存使用率==================+++//
- DWORD dwValue = getWin_MemUsage();
- printf("内存使用率为 %d %% \n",dwValue);
- //+++======================获取Windows CPU使用率====================+++//
- //getWin_CpuUsage();
- //+++======================获取Windows 硬盘使用====================+++//
- getWin_DiskUsage();
- return 0;
- }