获取电脑进程列表，显示各个进程的CPU，内存，上行速度，速度

获取电脑进程列表，显示各个进程的CPU，内存，上行速度，下载速度。以及通过pid杀死进程的方法。使用winpcap库抓取各个进程的网络速率。

#include “stdafx.h“
#include “CpuCheck.h“
#include   
#include   
#include   


float CPUusage::get_cpu_usage（）
{

	FILETIME now;
	FILETIME creation_time;
	FILETIME exit_time;
	FILETIME kernel_time;
	FILETIME user_time;
	int64_t system_time;
	int64_t time;
	int64_t system_time_delta;
	int64_t time_delta;

	DWORD exitcode;

	float cpu = -1;

	if （!_hProcess）
	{
		return -1;
	}


	GetSystemTimeAsFileTime（&now）;

	//判断进程是否已经退出  
	GetExitCodeProcess（_hProcess &exitcode）;
	if （exitcode != STILL_ACTIVE） {
		clear（）;
		printf（“exitcode:%d process exit\n“ exitcode）;
		return -1;
	}

	//计算占用CPU的百分比  
	if （!GetProcessTimes（_hProcess &creation_time &exit_time &kernel_time &user_time））
	{
		DWORD lasterr = GetLastError（）;
		clear（）;
		printf（“lasterr:%d process cpu\n“ lasterr）;
		return -1;
	}
	system_time = （file_time_2_utc（&kernel_time） + file_time_2_utc（&user_time））
		/ _processor;
	time = file_time_2_utc（&now）;

	//判断是否为首次计算  
	if （（_last_system_time == 0） || （_last_time == 0））
	{
		_last_system_time = system_time;
		_last_time = time;
		return -2;
	}

	system_time_delta = system_time - _last_system_time;
	time_delta = time - _last_time;

	if （time_delta == 0） {
		return -1;
	}

	cpu = （float）system_time_delta * 100 / （float）time_delta;
	_last_system_time = system_time;
	_last_time = time;
	return cpu;
}

CPUusage::uint64_t CPUusage::file_time_2_utc（const FILETIME* ftime）
{
	LARGE_INTEGER li;

	li.LowPart = ftime->dwLowDateTime;
	li.HighPart = ftime->dwHighDateTime;
	return li.QuadPart;
}

int CPUusage::get_processor_number（）
{
	SYSTEM_INFO info;
	GetSystemInfo（&info）;
	return info.dwNumberOfProcessors;
}




int CPUusage::get_memory_usage（int pid uint64_t* mem uint64_t* vmem）
{
	PROCESS_MEMORY_COUNTERS pmc;
	if （GetProcessMemoryInfo（OpenProcess（PROCESS_QUERY_LIMITED_INFORMATION false pid） &pmc sizeof（pmc）））
	{
		if （mem） *mem = pmc.WorkingSetSize;
		if （vmem） *vmem = pmc.PagefileUsage;
		return 0;
	}
	return -1;
}



int CPUusage::get_io_bytes（uint64_t* read_bytes uint64_t* write_bytes）
{
	IO_COUNTERS io_counter;
	if （GetProcessIoCounters（GetCurrentProcess（） &io_counter））
	{
		if （read_bytes） *read_bytes = io_counter.ReadTransferCount;
		if （write_bytes） *write_bytes = io_counter.WriteTransferCount;
		return 0;
	}
	return -1;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-09-20 18:15  ProcessNetRateDemo\
     目录           0  2017-09-20 18:15  ProcessNetRateDemo\Debug\
     目录           0  2017-09-20 18:11  ProcessNetRateDemo\ProcessNetRateDemo\
     文件        2448  2017-08-12 19:46  ProcessNetRateDemo\ProcessNetRateDemo\CpuCheck.cpp
     文件        2234  2017-08-15 11:38  ProcessNetRateDemo\ProcessNetRateDemo\CpuCheck.h
     目录           0  2017-09-20 18:14  ProcessNetRateDemo\ProcessNetRateDemo\Debug\
     目录           0  2017-09-20 18:15  ProcessNetRateDemo\ProcessNetRateDemo\Debug\ProcessN.97583C40.tlog\
     文件        2392  2017-09-20 18:14  ProcessNetRateDemo\ProcessNetRateDemo\Debug\ProcessNetRateDemo.Build.CppClean.log
     文件          86  2017-09-20 18:14  ProcessNetRateDemo\ProcessNetRateDemo\Debug\ProcessNetRateDemo.log
     文件       12499  2017-09-20 18:11  ProcessNetRateDemo\ProcessNetRateDemo\ProcessNetRateDemo.cpp
     文件        5571  2017-08-12 16:00  ProcessNetRateDemo\ProcessNetRateDemo\ProcessNetRateDemo.vcxproj
     文件        3529  2017-08-12 16:00  ProcessNetRateDemo\ProcessNetRateDemo\ProcessNetRateDemo.vcxproj.filters
     文件         165  2017-08-11 16:44  ProcessNetRateDemo\ProcessNetRateDemo\ProcessNetRateDemo.vcxproj.user
     文件        1792  2017-08-11 16:39  ProcessNetRateDemo\ProcessNetRateDemo\ReadMe.txt
     目录           0  2017-08-11 16:48  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\
     文件        1200  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\Plugin.h
     目录           0  2017-08-11 16:48  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\abstract\
     文件         799  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\abstract\Model.cpp
     文件         963  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\abstract\Model.h
     文件         818  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\abstract\View.cpp
     文件         935  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\abstract\View.h
     目录           0  2017-08-11 16:48  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\
     文件         791  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\Detail.cpp
     文件        1307  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\Detail.h
     文件        6626  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\DetailModel.cpp
     文件        2505  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\DetailModel.h
     文件       13863  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\DetailView.cpp
     文件        1960  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\detail\DetailView.h
     目录           0  2017-08-11 16:48  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\month\
     文件         775  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\month\Month.cpp
     文件        1298  2017-08-11 12:59  ProcessNetRateDemo\ProcessNetRateDemo\plugins_bak\month\Month.h
............此处省略77个文件信息