samples/MemoryStatus/MemoryStatus/ConsoleApplication.cpp at develop · ERRLSTAR/samples · GitHub

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

#include "pch.h"

#include <windows.h>

#include <chrono>

#include <thread>

using namespace std;

// Use to convert bytes to KB

#define DIV 1024

// Specify the width of the field in which to print the numbers.

#define MESSAGE_WIDTH 30

#define NUMERIC_WIDTH 10

void printMessage(LPCSTR msg, bool addColon)

{

cout.width(MESSAGE_WIDTH);

cout << msg;

if (addColon)

{

cout << " : ";

}

void printMessageLine(LPCSTR msg)

{

printMessage(msg, false);

cout << endl;

}

void printMessageLine(LPCSTR msg, DWORD value)

{

printMessage(msg, true);

cout.width(NUMERIC_WIDTH);

cout << right << value << endl;

}

void printMessageLine(LPCSTR msg, DWORDLONG value)

{

printMessage(msg, true);

cout.width(NUMERIC_WIDTH);

cout << right << value << endl;

}

void checkInput(HANDLE exitEvent)

{

for (;;)

{

char character;

cin.get(character);

if (character == 'q')

{

::SetEvent(exitEvent);

break;

}

int main(int argc, char **argv)

{

printMessageLine("Starting to monitor memory consumption! Press enter to start monitoring");

printMessageLine("You can press q and enter at anytime to exit");

cin.get();

HANDLE exitEvent = ::CreateEvent(NULL, FALSE, FALSE, NULL);

if (NULL == exitEvent)

{

printMessageLine("Failed to create exitEvent.");

return -1;

}

std::thread inputThread(checkInput, exitEvent);

for (;;)

{

MEMORYSTATUSEX statex;

statex.dwLength = sizeof(statex);

BOOL success = ::GlobalMemoryStatusEx(&statex);

if (!success)

{

DWORD error = GetLastError();

printMessageLine("*************************************************");

printMessageLine("Error getting memory information", error);

printMessageLine("*************************************************");

}

else

{

DWORD load = statex.dwMemoryLoad;

DWORDLONG physKb = statex.ullTotalPhys / DIV;

DWORDLONG freePhysKb = statex.ullAvailPhys / DIV;

DWORDLONG pageKb = statex.ullTotalPageFile / DIV;

DWORDLONG freePageKb = statex.ullAvailPageFile / DIV;

DWORDLONG virtualKb = statex.ullTotalVirtual / DIV;

DWORDLONG freeVirtualKb = statex.ullAvailVirtual / DIV;

DWORDLONG freeExtKb = statex.ullAvailExtendedVirtual / DIV;

printMessageLine("*************************************************");

printMessageLine("Percent of memory in use", load);

printMessageLine("KB of physical memory", physKb);

printMessageLine("KB of free physical memory", freePhysKb);

printMessageLine("KB of paging file", pageKb);

printMessageLine("KB of free paging file", freePageKb);

printMessageLine("KB of virtual memory", virtualKb);

printMessageLine("KB of free virtual memory", freeVirtualKb);

printMessageLine("KB of free extended memory", freeExtKb);

printMessageLine("*************************************************");

}

if (WAIT_OBJECT_0 == ::WaitForSingleObject(exitEvent, 100))

{

break;

}

inputThread.join();

::CloseHandle(exitEvent);

printMessageLine("No longer monitoring memory consumption!");

}

samples/MemoryStatus/MemoryStatus/ConsoleApplication.cpp at develop · ERRLSTAR/samples · GitHub

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