JumboViz is a tool for visualizing the heap usage of Java programs by memory tracing. It relies on the tool Elephant Tracks to generate a heap trace, which JumboViz analyzes and generates some visualizations based on the trace.
JumboViz could be used by Java programmers wishing to debug memory issues and/or programming languages/software engineering researchers wishing to use the tool to drive their studies of memory usage in Java programs.
Currently, we have implemented two visualization: planar embedding and class hierarchy.
- the simulator;
- the class hierarchy plugin.
- the Boost C++ libraries (on Debian/Ubuntu:
sudo apt-get install libboost-all-dev, or use your operating system's package manager); - Java Virtual Machine header files to run the class hierarchy tool (Oracle JDK or OpenJDK preferred);
- d3.js (packaged into the HTML visualizations, no need for extra action).
For the planar embedding, you need to generate a heap trace for you program using Elephant Tracks, and then follow the instructions in the README here. If you want to see the class hierarchy visualization, you need also to follow the instructions here to get a hierarchy file.
git clone git@github.com:HeapVisCapstone/tracesimulator.git to clone the main visualization engine.
git clone git@github.com:HeapVisCapstone/hierarchy.git to clone the hierarchy plugin. For both libraries, simply type make to build.
By default the Makefile uses clang++, but g++ will work too.
In the future, we will implement animation features to show the change of heap usage over time. Other possible work could use machine learning to better cluster the heap graph or run shape analysis on the heap graph to identify data structures.