public static SmartPtr GetSystemHandleInformation()
{
int length = 0x10000;
while (true)
{
using (SmartPtr ptr = new SmartPtr())
{
ptr.Allocate(length);
int returnLength;
NtStatus ret = NativeMethods.NtQuerySystemInformation(
SystemInformationClass.
SystemHandleInformation,
ptr.Pointer, length, out returnLength
);
if (ret == NtStatus.InfoLengthMismatch)
{
length *= 2;
if (length > 1024 * 1024 * 1024)
{
throw new OutOfMemoryException("NtQuerySystemInformation fails");
}
}
else if (ret == NtStatus.Success)
{
return(ptr.Clone());
}
}
}
}
