ALMOST: Exploring Program Traces

13 years 8 months ago

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We built a tool to visualize and explore program execution traces. Our goal was to help programmers without any prior knowledge of a program, quickly get enough knowledge about its structure so that they can make small to medium changes. In the process, a number of problems were faced and tackled concerning the eﬃcient use of screen space, interaction with multiple concurrent views, and linking of asymmetric views. 1 Overview When a programmer is trying to understand a program code, execution traces can be a useful source of information. However, in textual form it is almost impossible to read any but the most trivial traces; there is a need to visualize them. As a domain of data to be visualized, traces are quite speciﬁc: they are time series, they have no noise (all the data is signiﬁcant), and they come from a process that is available (we always have the program, even if in machine code) and deterministic (modulo input, output, timing, and resource allocation, which can also...

Manos Reniers, Steven P. Reis

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