display total count of process running with the same name

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Hello Everyone,
I am stucked with a small problem in C++ please can any one help me out in this. what i want is : if in case vcshost.exe is running in task manager and its multiple instances are also present in task manager thus i want their total count as output.

basically in my task manager currently 10 vcshost are running henceforth it must display output as 10.

My code is :

// ConsoleApplication41.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <windows.h>
#include <tlhelp32.h>
#include <iostream>

using namespace std;

DWORD FindProcessId(const std::wstring& processName);

int main(int argc, char* argv[])
{

	bool BackupProcess = true;
	//DWORD dwHandleCount;
	DWORD dwHandleCount = 0;
	 
	GetProcessHandleCount(GetCurrentProcess(), &dwHandleCount); 


	if (FindProcessId(L"vcshost.exe"))   //.Length.ToString();
	{
		cout << "total instance if vcshost running are :" << GetProcessHandleCount(GetCurrentProcess(), &dwHandleCount);
		
    }

	if (FindProcessId(L"SDRSVC.exe") || FindProcessId(L"sdclt.exe"))
	{
				cout << "\n Windows backup Running";
	}

	
	else if (FindProcessId(L"BackupExecJobEngine.exe") || FindProcessId(L"BackupExecAgentBrowser.exe") || FindProcessId(L"BackupExecDeviceMediaService.exe") || FindProcessId(L"BackupExecManagementService.exe") || FindProcessId(L"BackupExecAgentAccelerator.exe") || FindProcessId(L"BackupExecRPCService.exe"))
	{
		
		cout << "\n Symmantec Backup running";
	}

	else if (FindProcessId(L"ShadowProtectSvc.exe"))
	{
		
		cout << "\n Shadow Protect Running";
	}
	else if (FindProcessId(L"ib_service.exe"))
	{
		cout << "\n iBackup Running";
	}
	else if (FindProcessId(L"bschJW.exe"))
	{
		
		cout << "\n AhsayOBM Backup Running";
	}

	else if (FindProcessId(L"SymTrackServicex64.exe"))
	{
	
		cout << "\n SymTrackServicex64 Backup Running";
	}

	else if (FindProcessId(L"vxmon.exe"))
	{
		
		cout << "\n vxmon Backup Running";
	}

	else if (FindProcessId(L"Vproconsole.exe"))
	{
		cout << "\n Vproconsole Backup Running";
	}

	else if (FindProcessId(L"mozyproconf.exe"))
	{
		cout << "\n mozyproconf Backup Running";
	}
	else if (FindProcessId(L"NtBackup.exe"))
	{
		
		cout << "\n NtBackup Running";
	}
	
	else 
	{

		BackupProcess = false;	
		cout << "\n No backups Running";
	}
	
	return 0;
}


DWORD FindProcessId(const std::wstring& processName)
{
	PROCESSENTRY32 processInfo;
	processInfo.dwSize = sizeof(processInfo);

	HANDLE processesSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
	if (processesSnapshot == INVALID_HANDLE_VALUE)
		return 0;

	Process32First(processesSnapshot, &processInfo);
	if (!processName.compare(processInfo.szExeFile))
	{
		CloseHandle(processesSnapshot);
		return processInfo.th32ProcessID;
	}

	while (Process32Next(processesSnapshot, &processInfo))
	{
		if (!processName.compare(processInfo.szExeFile))
		{
			CloseHandle(processesSnapshot);
			return processInfo.th32ProcessID;
		}
	}

	CloseHandle(processesSnapshot);
	return 0;
}

Output that i get by executing this code is:
total instance of vcshost running are : 1 (wrong output) because 10 instance are running henceforth it must display 10

Posted 12-May-15 23:27pm

Member 11460314

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Jochen Arndt · Answer 1 · 2015-05-13T00:24:00

Your FindProcessId function is returning when the first process with the specified name is found. To count the number of instances you must write a function that iterates over all handles and counts the processes with matching names.

Example (untested):

unsigned CountProcesses(const std::wstring& processName)
{
    unsigned nCount = 0;
    PROCESSENTRY32 processInfo;
    processInfo.dwSize = sizeof(processInfo);

    HANDLE processesSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
    if (processesSnapshot == INVALID_HANDLE_VALUE)
        return 0;

    if (Process32First(processesSnapshot, &processInfo))
    {
        do
        {
            if (!processName.compare(processInfo.szExeFile))
                ++nCount;
        }
        while (Process32Next(processesSnapshot, &processInfo));
    }
    CloseHandle(processesSnapshot);
    return nCount;
}

Member 11460314 · Answer 2 · 2015-05-13T22:03:00

Solution 2

hey but how can i call this funnction in main.
i am trying something like this but i am not getting output.

if (CountProcesses(L"SDRSVC.exe"))
	{
			cout << "virtual machine : " << CountProcesses;
	}

i guess i am wrong somewhere calling in main function. please can any one correct me

Posted 13-May-15 22:03pm