public static long GetPhysicallyInstalledSystemMemory()
{
if (NativeMethods.GetPhysicallyInstalledSystemMemory(out var totalMemoryInKilobytes))
{
return(checked (Convert.ToInt64(totalMemoryInKilobytes) * KiBiByte));
}
var memory = MEMORYSTATUSEX.Create();
if (NativeMethods.GlobalMemoryStatusEx(ref memory))
{
return(Convert.ToInt64(memory.ullTotalPhys));
}
throw new InvalidOperationException(
@"Failed to determine the size of the physically installed system memory.",
new Win32Exception(Marshal.GetLastWin32Error()));
}
static void CheckMemoryEnterPoint()
{
CHECK:
var status = MEMORYSTATUSEX.Create();
if (GlobalMemoryStatusEx(ref status))
{
if (status.ullAvailPhys < (ulong)PreservedMemory)
{
WriteLine("Avaliable Memory = {0:##,###} < {1:##,###} .", status.ullAvailPhys, PreservedMemory);
KillApplications(TargetPrcesses);
}
Console.Title = string.Format("Avaliable Memory: {0:##,###}/{1:##,###}",
status.ullAvailPhys, status.ullTotalPhys);
}
// Check memory every 5 seconds.
Thread.Sleep(5000);
goto CHECK;
}