怎样得到一个线程的CPU使用率阿？加急，弟兄们帮忙啊

Question

怎样得到一个线程的CPU使用率阿？加急，弟兄们帮忙啊

Answer 1

bool   CanGetCPUUsage()
{
//os version information structure
OSVERSIONINFO OsVersionInfo;
OsVersionInfo.dwOSVersionInfoSize= sizeof(OSVERSIONINFO);
//get os version
GetVersionEx(&OsVersionInfo);
//only run in win2000/nt OS
if(OsVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
{
// MessageBox("Only run in Win2K/NT,\\nYour OS is not Win2000/NT!","prompt:");
return false;
} //Get NtQuerySystemInformation Address from ntdll.dll
    NtQuerySystemInformation =(NTQSI)GetProcAddress(
       GetModuleHandle("ntdll.dll"),
  "NtQuerySystemInformation" );    if (!NtQuerySystemInformation)
{
// MessageBox("no this function");
return false;
}    // get num of processors
    status = NtQuerySystemInformation(0,&SysBaseInfo,sizeof(SysBaseInfo),NULL);
    if (status != NO_ERROR)
    {
//       MessageBox("failed to query basic info(num of processors)");
       return false;
    }
    return true;
}
double   GetCPUUsage()
{
    // get system time
    status = NtQuerySystemInformation(3,&SysTimeInfo,sizeof(SysTimeInfo),0);
    if (status!=NO_ERROR)
{
// MessageBox("failed to get system time!");
                return ret_error;
}    // get cpu idle time
    status = NtQuerySystemInformation(2,&SysPerfInfo,sizeof(SysPerfInfo),NULL);
    if (status != NO_ERROR)
{
// MessageBox("failed to get cpu time");
                return ret_error;
}
if (liOldIdleTime.QuadPart != 0)
{
        // new cpu Time = NewTime - OldTime
        dbCpuIdleTime =LI64ToDouble(SysPerfInfo.liIdleTime)-LI64ToDouble(liOldIdleTime);
        dbSysTime =LI64ToDouble(SysTimeInfo.liKeSystemTime)-LI64ToDouble(liOldSysTime);        //get cpu usage
unCpuUsage=100 - 100*(dbCpuIdleTime/dbSysTime)/(double)SysBaseInfo.bKeNumberProcessors+0.5;
}    // store new cpu idle and system time
    liOldIdleTime = SysPerfInfo.liIdleTime;
    liOldSysTime = SysTimeInfo.liKeSystemTime;        return unCpuUsage;
}

Answer 2

GetProcessUse(PROCESS_INFORMATION proc,_JOBOBJECT_BASIC_ACCOUNTING_INFORMAT Info)
{Handle hJob=CreateJobOjbect(NULL,NULL);
AssignProcessToJobObject(hjob,proc.hProcess,NULL,0,0);
QueryInformationJobOjbect(hJob,Info)
closeHandle(hjob);
}typedef struct _JOBOBJECT_BASIC_ACCOUNTING_INFORMATION
{
LARGE_INTEGER  TotalUserTime; 
LARGE_INTEGER  TotalKernelTime;
LARGE_INTEGER  ThisPeriodTotalUerTime
LARGE_INTEGER  thisPeriodTotalKernelTime;
DWORD TotalPageFaultCount
DWORD TotalProcess
DWORD ActiveProcesses 
DWORD TotalTerminatedProcesses;
}_JOBOBJECT_BASIC_ACCOUNTING_INFORMATION,*_JOBOBJECT_BASIC_ACCOUNTING_INFORMATION
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Answer 3

windows核心编程里有代码 好像..