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• Writing agnostic code.

BigArray<T>, getting around the 2GB array size limit
10 August 05 06:14 PM | joshwil | 14 Comments   

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 Read More...

Filed under: Writing code targeted at 64bit., 64bit CLR Implementation Goo

What is the difference in a P/Invoke signature between “byref byte” and “byte[]”?
10 August 05 06:11 PM | joshwil | 3 Comments   

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 Read More...

Filed under: Writing code targeted at 64bit., 64bit CLR Implementation Goo, Writing agnostic code.

How the OS Loader will force .Net v1.0/1.1 executables to run under WOW64 on a 64-Bit Machine
15 October 04 01:15 PM | joshwil | 16 Comments   

[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 Read More...

Filed under: Writing code targeted at 64bit., 64bit CLR Implementation Goo, Writing agnostic code.

ArrayList’s vs. generic List for primitive types and 64-bits
13 April 04 02:41 PM | joshwil | 18 Comments   

<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. Read More...

Filed under: Writing code targeted at 64bit., 64bit CLR Implementation Goo, Writing agnostic code.

As promised, what is the WOW64 and what does it mean to managed apps that you run on 64bit machines?
11 March 04 04:11 PM | joshwil | 23 Comments   

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 Read More...

Filed under: Writing code targeted at 64bit., 64bit CLR Implementation Goo, Writing agnostic code.