Ada Resource Association

The ease with which code is analyzable depends of the language type you use. Static analysis is becoming mainstream, with mature bug-finding tools for C and Java, including products such as Coverity Prevent, Grammatech CodeSonar, and Fortify SCA. These products limit the level of “noise” (false warnings) inherent to such tools to a minimum. However, by carefully selecting those cases for which they report a problem, these bug-finders hide the fact that they are largely uncertain about the overall correctness of the program.

Static analysis tools are becoming more integrated into the software development process. Saving data from the compiler, change history, and error information during the process instead of as a post-code step can make static analysis more productive.

Jack Ganssle at Embedded.com discusses the Sofcheck and AdaCore CodePeer tool in Executing software contracts; in particular he examines the tool’s ability to create contracts for subprograms.

William Wong looks at the Dasher project being developed by Mälardalen University in Sweden.

Jack Ganssle at Embedded.com wonders Why aren’t developers more interested in Ada?

A follow-up piece by Jack Ganssle from his original article on the adoption of Ada which appears on Embedded.com.

Joab Jackson takes a look at the history of the Ada programming language, it’s traditional markets, and gives a real picture of Ada’s place in today’s software development world.

Naomi Hamilton at TechWorld chats with S. Tucker Taft, Chairman and CTO of SofCheck. Taft has been heavily involved in the Ada 1995 and 2005 revisions, and still works with the language today as both a designer and user.

The recent introduction of multicore architectures has caused a surprising amount of uproar. Multiprocessing has been around for decades. The original CDC 6000, for instance, was an interestingly designed multiprocessor machine first put into use in the early 1960s.

Another important player in multiprocessing is Ada. Even the original Ada 83 version of the language has a well-developed notion of multithreading (termed “tasking” in Ada) with high-level constructs that are easy to use and analyze. The subsequent Ada 95 and Ada 2005 versions of the language substantially improved and extended this functionality, and decades of experience have been accumulated in using Ada to deal with the problem of writing programs that run effectively on machines using more than one processor.

In November of 2007, the National Museum of Computing sponsored an historical code-breaking competition to celebrate the rebuild of Colossus Mark 2 at Bletchley Park. Colossus, the first programmable digital computer, was used in WWII to crack the codes created by the Lorenz cipher machines used by the German High Command. Programmers and code breakers were invited to try to beat the rebuilt Colossus in cracking the 1938 Lorenz SZ42 encrypted message.

Using Ada, IT security specialist, Joachim Schüth, was able to decipher the code and beat Colossus. In the following interview, Joachim explains why he started working with Ada, his impressions of the language, and why it was the perfect choice for the challenge.