如何通过C++代码将设备的进程CPU使用情况输出
时间: 2024-01-22 10:04:18 浏览: 18
你可以使用C++中的相关API来获取进程的CPU使用情况并输出。以下是一个示例代码:
```c++
#include <Windows.h>
#include <iostream>
int main()
{
// 获取当前进程的句柄
HANDLE hProcess = GetCurrentProcess();
// 获取系统核心数
SYSTEM_INFO sysInfo;
GetSystemInfo(&sysInfo);
DWORD dwNumProcessors = sysInfo.dwNumberOfProcessors;
// 获取进程CPU使用情况
FILETIME ftSysIdle, ftSysKernel, ftSysUser;
FILETIME ftProcCreation, ftProcExit, ftProcKernel, ftProcUser;
ULARGE_INTEGER ulSysIdle, ulSysKernel, ulSysUser;
ULARGE_INTEGER ulProcCreation, ulProcExit, ulProcKernel, ulProcUser;
GetSystemTimes(&ftSysIdle, &ftSysKernel, &ftSysUser);
GetProcessTimes(hProcess, &ftProcCreation, &ftProcExit, &ftProcKernel, &ftProcUser);
ulSysIdle.LowPart = ftSysIdle.dwLowDateTime;
ulSysIdle.HighPart = ftSysIdle.dwHighDateTime;
ulSysKernel.LowPart = ftSysKernel.dwLowDateTime;
ulSysKernel.HighPart = ftSysKernel.dwHighDateTime;
ulSysUser.LowPart = ftSysUser.dwLowDateTime;
ulSysUser.HighPart = ftSysUser.dwHighDateTime;
ulProcCreation.LowPart = ftProcCreation.dwLowDateTime;
ulProcCreation.HighPart = ftProcCreation.dwHighDateTime;
ulProcExit.LowPart = ftProcExit.dwLowDateTime;
ulProcExit.HighPart = ftProcExit.dwHighDateTime;
ulProcKernel.LowPart = ftProcKernel.dwLowDateTime;
ulProcKernel.HighPart = ftProcKernel.dwHighDateTime;
ulProcUser.LowPart = ftProcUser.dwLowDateTime;
ulProcUser.HighPart = ftProcUser.dwHighDateTime;
ULONGLONG ulSysKernelTime = ulSysKernel.QuadPart - ulSysIdle.QuadPart;
ULONGLONG ulSysUserTime = ulSysUser.QuadPart - ulSysIdle.QuadPart;
ULONGLONG ulProcKernelTime = ulProcKernel.QuadPart - ulProcCreation.QuadPart;
ULONGLONG ulProcUserTime = ulProcUser.QuadPart - ulProcCreation.QuadPart;
double dSysKernelTime = ulSysKernelTime * 1.0 / dwNumProcessors / 10000000;
double dSysUserTime = ulSysUserTime * 1.0 / dwNumProcessors / 10000000;
double dProcKernelTime = ulProcKernelTime * 1.0 / 10000000;
double dProcUserTime = ulProcUserTime * 1.0 / 10000000;
std::cout << "System Kernel Time: " << dSysKernelTime << "s" << std::endl;
std::cout << "System User Time: " << dSysUserTime << "s" << std::endl;
std::cout << "Process Kernel Time: " << dProcKernelTime << "s" << std::endl;
std::cout << "Process User Time: " << dProcUserTime << "s" << std::endl;
return 0;
}
```
这段代码可以获取当前进程的CPU使用情况(包括内核时间和用户时间),并将其输出到控制台。你可以根据需要对其进行修改和扩展。