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Archive for the 'Delphi' Category

(Chronologically Listed)

Monitoring the Monitor

No, not this Monitor, this Monitor. Ever since it’s introduction, it’s been the subject of both scorn and praise… ok, ok, scorn. Recently, during our current field test for the next version of RAD Studio*, one of our long-time field-testers posted a reference to this excellent blog post by Eric Grange [...]

Posted by Allen Bauer on August 23rd, 2013 under Delphi | 25 Comments »

Give in to the ARC side

I thought I’d take a few moments (or more) to answer some questions regarding the just introduced Automatic Reference Counting (ARC) mechanism to Delphi on mobile platforms (namely iOS in XE4, and Android in a future release). Among some sectors of our customer base there seems to be some long-running discussions [...]

Posted by Allen Bauer on June 14th, 2013 under ARC, ARM, Android, Delphi, Mobile, iOS | 60 Comments »

More x64 assembler fun-facts–new assembler directives

The Windows x64 ABI (Application Binary Interface) presents some new challenges for assembly programming that don’t exist for x86. A couple of the changes that must be taken into account can can be seen as very positive. First of all, there is now one and only one OS specified calling convention. We certainly could have [...]

Posted by Allen Bauer on October 10th, 2011 under 64bit, CodeGear, Delphi, General, Work | Comment now »

x64 assembler fun-facts

While implementing the x64 built-in assembler for Delphi 64bit, I got to “know” the AMD64/EM64T architecture a lot more. The good thing about the x64 architecture is that it really builds on the existing instruction format and design. However, unlike the move from 16bit to 32bit where most existing instruction encodings were automatically promoted to [...]

Posted by Allen Bauer on October 5th, 2011 under 64bit, Delphi, General | 6 Comments »

“Talk Amongst Yourselves” #3

So far we’ve had “Testing synchronization primitives” and “Writing a ‘self-monitoring’ thread-pool.” Let’s build on those topics, and discuss what to do with exceptions that occur within a scheduled work item within a thread pool.
My view is that exceptions should be caught and held for later inspection, or re-raised at some synchronization point. What do [...]

Posted by Allen Bauer on April 7th, 2010 under Delphi, General, Parallel Programming, Work | 5 Comments »

Another installment of “Talk Amongst Yourselves”

Let’s start thinking about thread pools. How do you manage a general purpose thread pool in the face of no-so-well-written-code? For instance, a task dispatched into the thread pool never returns, effectively locking that thread from ever being recycled. How do you monitor this? How long do you wait before spooling out a new thread? [...]

Posted by Allen Bauer on March 26th, 2010 under CodeGear, Delphi, General, Parallel Programming, Work | 7 Comments »

This is the last day…

In this office. I’ve been in the same physical office for nearly 15 years. After years of accumulation, it now looks positively barren. Beginning next Monday, March 29th, 2010, I’ll be in a new building, new location, and new office. The good thing is that the new place is a mere stone’s throw from the [...]

Posted by Allen Bauer on March 26th, 2010 under CodeGear, Delphi, Generics, Personal, Work | 3 Comments »

Simple question… very hard answer… Talk amongst yourselves…

I’m going to try a completely different approach to this post. I’ll post a question and simply let the discussion ensue. I would even encourage the discussion to spill over to the public newsgroups/forums. Question for today is:
How can you effectively unit-test synchronization primitives for correctness or more generally, how would you test a concurrency [...]

Posted by Allen Bauer on March 22nd, 2010 under CodeGear, Delphi, General, Parallel Programming | 26 Comments »

What. The. Heck.

Is. This? I simply cannot explain this. At. All.

This was on a bulletin/white-board in the break area. I’d never noticed it because it was covered with photos from various sign-off (final authorization to release the product) celebrations. Lots of photos of both past and present co-workers, many thinner and with more hair ;-). Since [...]

Posted by Allen Bauer on February 19th, 2010 under CodeGear, Delphi, General, Random, Work | 10 Comments »

A case when FreeAndNil is your enemy

It seems that my previous post about FreeAndNil sparked a little controversy. Some of you jumped right on board and flat agreed with my assertion. Others took a very defensive approach. Still others, kept an “arms-length” view. Actually, the whole discussion in the comments was very enjoyable to read. There were [...]

Posted by Allen Bauer on February 16th, 2010 under CodeGear, Delphi, General, Work, ednfront | 38 Comments »

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