C / C++ / MFC

john5632 wrote:

Is there anything like "register for events/notifications from the OS or system" to get values of RAM & Disk usage?

john5632 wrote:

Thanks for information. I need to get System Ram Status, drive space status, cpu usage and cpu usage by specific process.

john5632 wrote:

Thanks for information. I need to get System Ram Status, drive space status, cpu usage and cpu usage by specific process.

john5632 wrote:

Can I use CreateMemoryResourceNotification for user defined memory size, if yes please let me know how to do?

john5632 wrote:

Can you suggest any way to get Network Utilization such like as Task Manager...?

john5632 wrote:

It gives Network Link Speed but I need Network Utilization like Task Manager...

#include "Iphlpapi.h"
#pragma comment(lib, "iphlpapi.lib")

vector<pair<string,pair<size_t,size_t>>> network_device_sample_1;
vector<pair<string,pair<size_t,size_t>>> network_device_sample_2;

VOID GetNetworkTraffic(vector<pair<string,pair<size_t,size_t>>>& sample)
{
	BYTE *pBuf=NULL;
	DWORD dwSize=0;
	DWORD dwResult=0;
	BOOL bConnected=FALSE;
	PMIB_IFTABLE pMIBTable;
	CString str;
	GetIfTable(NULL,&dwSize,FALSE);
	pBuf=new BYTE[dwSize];
	pMIBTable=reinterpret_cast<PMIB_IFTABLE>(pBuf);
 
	if(NO_ERROR == GetIfTable(pMIBTable,&dwSize,FALSE))
	{
		for(UINT i=0; i < pMIBTable->dwNumEntries; ++i)
		{
			if(MIB_IF_TYPE_ETHERNET == pMIBTable->table[i].dwType)
			{
				sample.push_back(make_pair(std::string((char *)pMIBTable->table[i].bDescr),make_pair(pMIBTable->table[i].dwInOctets,pMIBTable->table[i].dwOutOctets)));
			}
		}
	}
	delete []pBuf;
}

DWORD CalculateBytesTransferred(pair<string,pair<size_t,size_t>> device)
{
	std::string description = device.first;
	vector<pair<string,pair<size_t,size_t>>>::iterator it = network_device_sample_1.begin();
	while(it != network_device_sample_1.end())
	{
		if(it->first == device.first)
		{
			ATLTRACE ("Statistics for %s.\n",device.first.c_str());

			DWORD dwTotalIncoming = device.second.first - it->second.first;
			DWORD dwTotalOutgoing = device.second.second - it->second.second;

			ATLTRACE ("Device has recieved %ld bytes per second.\n",dwTotalIncoming);
			ATLTRACE ("Device has sent %d bytes per second.\n",dwTotalOutgoing);
		}
		++it;
	}
	return 0;
}

GetNetworkTraffic(network_device_sample_1);
Sleep(1000); //You should probably replace this with something else... I am just Sleeping() for your code sample...
GetNetworkTraffic(network_device_sample_2);
for_each(network_device_sample_2.begin(), network_device_sample_2.end(), CalculateBytesTransferred);