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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...
Bit specific code in agnostic assemblies???
10 August 05 06:09 PM | joshwil | 7 Comments   
In previous blog entries I’ve spent some time talking about how to mark assemblies as bit specific and how the loader deals with those markings. What however is the preferred mode of an application? I will posit that it is to be compiled agnostic and Read More...
Isn’t my code going to be faster on 64-bit???
28 April 05 10:01 PM | joshwil | 12 Comments   
[updated 10:50am 5/2/05: It turns out that I copied and pasted an error in my code from the newsgroup posting I was answering. However a kind reader was able to spot it and I've fixed it, I'm getting new data and will updated graphs later today, however Read More...
Paint.Net is pretty cool, 20 minutes to get it running on 64-bit is even cooler!
07 April 05 11:35 AM | joshwil | 7 Comments   
Last night I played with Paint.Net for a while and got it running on the native 64-bit CLR with whidbey... Pretty cool stuff!!! Actually, a while might be overstating things... It took longer to install a copy of VS 2005 on my clean AMD64 machine than Read More...
Good blog entries on .Net GC
28 October 04 10:15 AM | joshwil | 0 Comments   
I just ran across these, they are a couple of really good reads on the .Net GC... http://blogs.msdn.com/maoni/archive/2004/06/15/156626.aspx http://blogs.msdn.com/maoni/archive/2004/09/25/234273.aspx Read More...
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...
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...
64-bit calling convention and PInvoke bugs
16 March 04 11:28 AM | joshwil | 12 Comments   
Ok, so Word for the Mac is failing me right now. I've tried twice to start this entry there and both times Word has gone kaput on me. Back to my trusty text editor… As for the inevitable "why Mac?" question... Well, I still haven't found a laptop Read More...
Behavior of 1.0/1.1 managed apps on 64bit machines
13 March 04 01:55 PM | joshwil | 28 Comments   
As I alluded to in my previous post there are multiple ways that we can go in terms of supporting legacy 1.0/1.1 assemblies on a Win64 machine. The context of the 1.0/1.1 support story is made somewhat simpler by the current plan of having both a v2.0 Read More...
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...

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