#include "stdafx.h"#include <windows.h>#include <math.h>// 时间转换static __int64 file_time_2_utc(const FILETIME* ftime){    LARGE_INTEGER li;    li.LowPart = ftime->dwLowDateTime;    li.HighPart = ftime->dwHighDateTime;    return li.QuadPart;}// 获得CPU的核数static int get_processor_number(){    SYSTEM_INFO info;    GetSystemInfo(&info);    return (int)info.dwNumberOfProcessors;}// 获取进程CPU占用int get_cpu_usage(HANDLE hand){      //cpu数量    static int processor_count_ = -1;    //上一次的时间    static __int64 last_time_ = 0;    static __int64 last_system_time_ = 0;    FILETIME now;    FILETIME creation_time;    FILETIME exit_time;    FILETIME kernel_time;    FILETIME user_time;    __int64 system_time;    __int64 time;    __int64 system_time_delta;    __int64 time_delta;    int cpu = -1;	if(hand==NULL)		return cpu;    if(processor_count_ == -1)    {        processor_count_ = get_processor_number();    }    GetSystemTimeAsFileTime(&now);    //HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, false, pid);    if (!GetProcessTimes(hand, &creation_time, &exit_time, &kernel_time, &user_time))    {        return -1;    }    system_time = (file_time_2_utc(&kernel_time) + file_time_2_utc(&user_time)) / processor_count_;    time = file_time_2_utc(&now);    if ((last_system_time_ == 0) || (last_time_ == 0))    {        last_system_time_ = system_time;        last_time_ = time;        return -1;    }    system_time_delta = system_time - last_system_time_;    time_delta = time - last_time_;    if (time_delta == 0)        return -1;    cpu = (int)((system_time_delta * 100 + time_delta / 2) / time_delta);    last_system_time_ = system_time;    last_time_ = time;    return cpu;}// 获取线程CPU占用int get_thread_cpu_usage(HANDLE hand){    //cpu数量    static int processor_count_ = -1;    //上一次的时间    static __int64 last_time_ = 0;    static __int64 last_system_time_ = 0;	    FILETIME now;    FILETIME creation_time;    FILETIME exit_time;    FILETIME kernel_time;    FILETIME user_time;    __int64 system_time;    __int64 time;    __int64 system_time_delta;    __int64 time_delta;	    int cpu = -1;	if(hand==NULL)		return cpu;    if(processor_count_ == -1)    {        processor_count_ = get_processor_number();    }	    GetSystemTimeAsFileTime(&now);	    //HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, false, pid);    if (!GetThreadTimes(hand, &creation_time, &exit_time, &kernel_time, &user_time))    {	return -1;    }    system_time = (file_time_2_utc(&kernel_time) + file_time_2_utc(&user_time)) / processor_count_;    time = file_time_2_utc(&now);	    if ((last_system_time_ == 0) || (last_time_ == 0))    {        last_system_time_ = system_time;        last_time_ = time;        return -1;    }	    system_time_delta = system_time - last_system_time_;    time_delta = time - last_time_;	    if (time_delta == 0)        return -1;	    cpu = (int)((system_time_delta * 100 + time_delta / 2) / time_delta);    last_system_time_ = system_time;    last_time_ = time;    return cpu;}//CPU占用率呈正弦实现const double SPLIT = 0.01;const int COUNT = 200;const double PI = 3.14159265;const int INTERVAL = 300;UINT ThreadFunT(){    DWORD busySpan[COUNT];  //array of busy times    DWORD idleSpan[COUNT];  //array of idle times    int half = INTERVAL / 2;    double radian = 0.0;    for(int i = 0; i < COUNT; i++)    {        busySpan[i] = (DWORD)(half + (sin(PI * radian) * half));        idleSpan[i] = INTERVAL - busySpan[i];        radian += SPLIT;    }    DWORD startTime = 0;    int j = 0;    while (true)    {        j = j % COUNT;        startTime = GetTickCount();        while ((GetTickCount() - startTime) <= busySpan[j]) ;        Sleep(idleSpan[j]);        j++;    }    return 0;}int main(int argc, char* argv[]){	HANDLE m,c;	DWORD ThreadID;	int i=0;	//让进程在指定处理器上运行	SetProcessAffinityMask(		GetCurrentProcess(),		0x00000001          //cpu mask         );	m=GetCurrentProcess();//	c=CreateThread(NULL,//		0,//		(LPTHREAD_START_ROUTINE)ThreadFunT,//		NULL,//		0,//		&ThreadID);	Sleep(300);	c=CreateThread(NULL,		0,		(LPTHREAD_START_ROUTINE)ThreadFunT,		NULL,		0,		&ThreadID);	while (i<200)	{		Sleep(100);		printf("CPU:%d%%  Thread:%d%%\n",get_cpu_usage(m),get_thread_cpu_usage(c));		i++;	}	printf("Hello World!\n");	return 0;}