General Development Archive

The article provides an in-depth look at the thread pool support in the Microsoft .NET Framework, shows why you need a pool and the implementation provided in .NET, and includes a complete reference for its use in your applications.

What do you do if you don't have the source for your application and it's failing because a GNU Library for C (glibc) function is returning something bad to the application? Override the function of interest with your own version. This can be done without having root permissions and without recompiling the libc source. Imagine the thrill of writing your own version of open()! The article contains sample code.

"LynxOS v4.0, the newest release of the POSIX-conformant hard real-time operating system (RTOS), has support for Linux ABI compatibility -- where Linux application binaries can run unchanged in the LynxOS environment without necessitating source code recompilation. This white paper examines the issues surrounding ABI compatibility in general and describes the architecture of the Linux ABI compatibility layer on LynxOS v4.0." Read the article at LinuxDevices.

"Does anyone really know what "object oriented" means? Does the phrase signify anything, or are the words just strung together because of an historical misnomer? One thing is clear. No one understands what the phrase "object oriented" means when they first hear it. While it does appear to be a juxtaposition of two ordinary words, its meaning does not jump out at you." Read it at CobolReport.

Get the news first on OSNews: The long-awaited "stable" and recommended for full use, GCC 3.1, is finally released. Get it from Gnu's ftp site, while the mirrors are not fully updated yet. Update: And the release is now official. You heard it first, here, on OSNews. Again.

CoyoteGulch.com has published an interesting article, benchmarking GCC 3.04 and ICC 6 (the article will be updated again after GCC 3.1's release). In the tests, ICC seems to pull ahead in most tests. When it's behind, it's never very far behind. The opposite is not true, and there are benchmarks where ICC is very far ahead, generating code that can be up to 5 times better than gcc's. Especially interesting, the "Stepanov" benchmark, which shows that ICC is capable of understanding the most complex c++ constructs, whereas GCC gets confused by them and ends up generating much slower code. This is bothersome, because it means that developers who want to get the most speed out of their gcc-compiled system need to write their code pretty much in C, whereas those using ICC can use all the productivity-enhancing features of C++ without speed penalty. As for the "WhetStone" benchmark, shows that gcc still has serious issues dealing with x87 floating-point code. It would also be very interesting to run the very same benchmark on a Pentium4, varying the compiler options, in order to see how both compilers can take advantage of the Pentium4's extra features, and especially SSE-2. Update: Another benchmark can be found here.

Porting Windows applications to Linux doesn't have to involve a retraining nightmare. Markus Neifer shows how to port MFC using wxWindows, giving a user's guide to this open source GUI toolkit and providing a complete, step-by-step porting example.

"Microsoft's new C# programming language is gaining in popularity, with usage nearly doubling in the last six months, a new study shows. C# is Microsoft's new Java-like language and a crucial piece in the software company's .Net Web services strategy, in which software is made available over the Net to be accessed by multiple devices, such as PCs, cell phones and handhelds. Twelve percent of all North American software developers have begun using C#, up from 7 percent six months ago, according to a new survey by market research firm Evans Data. The firm also predicts that the number of programmers using C# will double to 24 percent in the next year." Read the rest of the report at News.com.

News from Slashdot: ""Intels C++ and Fortran compilers are now available for Windows and Linux. The compiler for Linux provides higher compatibility with the GNU C-compiler including compability to the upcoming GCC-3.1 C++-ABI (binary compability) and support for several GNUisms in the syntax (PDF). To quote Intel: 'The 6.0 release of the Intel C++ compiler has improved support for the GNU C language extensions and is now able to build the Linux kernel with minor work arounds for both the IA-32 and Itanium architectures.' Little reminder: Running such a kernel is, of course, not supported by the kernel developers. Evaluation copies are available for download, but requires previous registration."

If you ever had to implement an ext2 file system driver, you surely noticed the lack of good documentation on the subject. This project aims to solve this issue by providing thorough documentation on the low level details of implementing a Second Extended file system driver.

Mark Mitchell, the GCC release manager posted at GCC's mailing list that a GCC 3.1 pre-release test version will be ready any time now, today or tomorrow. GCC 3.1 is the first "stable" version that developers were awaiting to base their projects on, as in some cases it delivers up to 30% faster executables than GCC 2.9x.x for the same codebase. GCC 3.x is a bit slower in compilation times than GCC 2.9x.x, but it creates faster executables, so it worth the extra time it takes in order to utilize the extra optimizations (a tip: compiling GCC 3.1 itself with the Intel compiler (which creates about 35% faster code than gcc 3.x), it would optimize GCC and it will make it require less compilation time). GCC 3.1 also has an extra flag for specific Pentium4 optimizations while it is more C++ compliant (lays out stricter rules for the C++ devs). Macintosh users should also await this release, as the new GCC seems to offer about 5% faster code than the previous GCC for the G3/G4 architecture. Apple has already switched internally to GCC 3.1.

From DaemonNews: "François Jacques and Jean-Claude Batista have an article on macadamian.com on writing a tiny version of the MSN messenger client on Windows and FreeBSD . The example is available in source code form for free." Our Take: It feels a bit strange to have software compile for the .NET Framework under FreeBSD. It is definately a welcoming addition to FreeBSD, but it still feels a bit strange. We'll get used to it, I guess.

In his first article about Jython, Noel Rappin discussed the features of the Python scripting language and its Jython implementation that would be of greatest interest to Java programmers. Jython is a complete implementation of the Python programming language written in 100% pure Java, and allows easy access to Java libraries. This article contains 10 tips for using Java objects in Jython.

With the 2.4 release of Linux come many new filesystem possibilities, including Reiserfs, XFS, GFS, and others. These filesystems sound cool, but what exactly can they do, what are they good at, and exactly how do you go about safely using them in a production Linux environment? Daniel Robbins, CEO and president over at Gentoo Linux (and creator of the sophisticated Portage packaging system) answers these questions by showing you how to set up these new advanced filesystems under Linux 2.4. In this final installment (Part 10/10), Daniel shows you how to get XFS up and running on your system and explores some of XFS's more advanced features. Recommended reading is also the previous article, Part 9, exploring XFS's features over the other Linux filesystems. In a similar recent article, Bert Scalzo for Linux Jounral, benchmarks ReiserFS, JFS and ext2/3.