GrammaTech transforms code analysis with visualization -

GrammaTech transforms code analysis with visualization


San Jose, Ca. – At ESC DESIGN West here, source-code analysis specialist GrammaTech took the wraps off its next-generation software architecture visualization system.

According to Paul Anderson, VP of Engineering at GrammaTech, the new system incorporates a sophisticated new interface for viewing the relationships between software program elements. The system has been integrated with CodeSonar, GrammaTech’s static-analysis tool for detecting defects.

CodeSonar is a sophisticated static-analysis tool that performs a whole-program, interprocedural analysis on C/C++ code, and identifies complex programming bugs that can result in system crashes, memory corruption, concurrency errors and other serious problems.

According to Anderson the growing complexity of large software systems makes it more difficult for developers to test and analyze the interrelationships between elements of source code.

He said the CodeSonar visualization has been designed to optimize visual inspection and analysis of software, with real-time, fluid transitions for developers to visualize massive data sets to work at different levels of abstraction. The software makes extensive use of the graphics processing unit (GPU), is very high performance and can handle very large code bases (10M+ lines of code).

“Typically, text editors show just a few dozen lines of code at a time,” Anderson said. “Currently available visualization tools are effective at displaying small-scale parts of the program structure such as fragments of class hierarchies and subsets of the call graph, but it is infeasible to use those tools to show whole-program structures.Even for small projects, such tools become unusable because of complexity and performance.”

The new program-visualization capability was specifically designed to perform well on millions of lines of code. It presents data in a layered fashion, so users can choose to see only the information appropriate to the desired level of abstraction.

“Users can explore the program in a top-down fashion, starting with the outermost high-level modules and zooming in to reveal detail at a finer granularity; or can take a bottom-up approach if that is more appropriate to the task.”

CodeSonar visualization displays the program’s call graph organized according to the module structure of the program. Graph layouts can be changed in real time and present data in tree, map, circuit, cluster, flow, radial and other layouts. Data is featured in a layered way that provides a high-level view with drill-down capability; users can explore the program from the bottom up as well.

The new tool capability also includes other program understanding and navigation features, and supports annotations and sharing of diagrams between team members. Anderson said that with this capability, users can start at individual functions to gain insight from a bottom-up perspective, annotate nodes and edges with additional information and overlay the visualization with information on defects and source-code metrics such as complexity.

Other features include the ability of users to search the graph for functions of interest, view the graph in a variety of different layouts, and navigate to and from the source code of the program. In addition, the architecture is extensible, so users can generate graphs from other sources, feed them in an XML format to the tool and see them in the same user interface.

CodeSonar visualization can be by means of a standard web client such as Microsoft Internet Explorer, Firefox or Chrome browsers. An early release version is available to customers today. To learn more, go

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