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….
Tag: 64bit CLR Implementation Goo
What is the difference in a P/Invoke signature between “byref byte” and “byte[]”?
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 when something works on 32-bit and doesn’t work on 64-bit…
How the OS Loader will force .Net v1.0/1.1 executables to run under WOW64 on a 64-Bit Machine
[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 on reading I’ll summarize the first post linked to (I however believe that they are really worth reading):…
ArrayList’s vs. generic List for primitive types and 64-bits
<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 double the size on 64-bit machines. After looking at…
As promised, what is the WOW64 and what does it mean to managed apps that you run on 64bit machines?
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…