I’ve received a number of queries as to why the 64-bit version of the 2.0 .Net runtime still has array maximum sizes limited to 2GB. Given that it seems to be a hot topic of late I figured a little background and a discussion of the options to get around this limitation was in order. First some background;...

Lately we’ve seen a spate of issues coming up on 64-bit platforms within the Developer Division around usages of P/Invoke signatures which declare a parameter as type “byref byte” where the developer really means “byte[]” (the corresponding native parameter type being something like LPBYTE). Usually...

[10/15, 2:04pm, fixed a couple typos; 10/15, 4:51pm, clarified a point] Before you read this entry, you might want to read these two entries: - http://blogs.msdn.com/joshwil/archive/2004/03/13/89163.aspx - http://blogs.msdn.com/joshwil/archive/2004/03/11/88280.aspx In case you skipped the link and kept...

<edited post, 3:51pm, something in the formatting was messing up the whole page...> The dynamically growing ArrayList structure is an interesting one, the other day I was looking at memory usage of some performance scenarios on 64-bit machines vs. 32-bit machines and noticed that ArrayLists are...

So, what is the WOW64? If you already have a firm grasp please feel free to skip these first few paragraphs to the section titled “Break in here for the .Net perspective” . When I went and Google’d a bit to see if anyone had a convincing answer out there what I seemed to find...