As a step up from the previous Mandelbrot Set explorer, I’m running a Terapixel image experience for DWScript Christmas 2013.
This is again on the Mandelbrot set, and involves a massive step up in complexity from the previous version, this one isn’t just server-side computed, it’s “Grid Computed” 🙂 (more…)
Here are a few findings on Multi-Read Exclusive-Write Synchronizer from a recent upgrade of DWScript‘s GlobalVar functions.
I ran some comparisons between a plain Critical Section, Delphi’s TMultiReadExclusiveWriteSynchronizer and Windows Slim Reader/Writer Lock, of which an implementation was added to the dwsXPlatform unit.
I’ve activated a small random pass phrase secure service based on DWScript Web Server.
You can reach it at
The twist is that the computations are handled server-side, using DWScript JIT compiler, so exploration can be fairly fast and comfortable even on low-powered hardware, be it an iPad, a Smartphone or an old laptop.
Delphi offers two ways of enumerating files in a directory and its sub-directories, the first is the classic (and buggy) FindFirst/FindNext, the second is IOUtils TDirectory.GetFiles and not very efficient.
Here is why and how I implemented DWScript‘s dwsXPlatform.CollectFiles, and a tip about getting a small system-wide boost as a bonus.
The FreePascal version of DWScript has been stalled for a little while on the incomplete UnicodeString (utf-16) support among other things.
It’s hard to blame the FreePascal team for that, given that Linux is primarily utf-8, and that utf-8 has quite a few advantages over utf-16.
Work and processing classes are typically short-lived, created to perform one form of processing or another then freed. They can be simple collections, handle I/O of one kind of another, perform computations, pattern matching, etc.
When they’re used for simple workloads, their short-lived temporary nature can sometimes become a performance problem.
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DWScript SVN version will now compile and run under XE5.
There is only one gotcha due to an XE5 regression.
In DWScript WebServer in the metered cloud, I mentioned setting up a light weight Windows 2008 r2 Virtual Private Server to serve as web server host.
A parallel series of articles deals with the DWScript Web Server itself, and this is a mini-series about setting up Windows 2008 with minimal memory, CPU, storage and vulnerability surface.