1. Meta-Level Runtime Feature Awareness
for Java [short]
Andrzej Olszak, Martin Rytter, Bo Nørregaard Jørgensen
{ao, mlrj, bnj}@mmmi.sdu.dk

2. Motivating metaphor
Awareness of
Animals Humans own behavior
a.k.a.
Self-targeted
dynamic
analysis

3. Is your software a frog?
 Feature location
 Mapping features to code
 Traceability links used by programmers
Program
Runtime
User Source code
events
Specifications
Programmer
of features

4. Is your software a frog?
 Feature location
 Mapping features to code
 Traceability links used by programmers
Program
Runtime
User Source code
events
Runtime feature awareness:
Specifications The ability of a program to
Programmer
of features recognize and act upon executions
of its own features

5. JAwareness
 Feature location + exposure of results to traced
program
 Feature entry points are starting points of features

6. Feature-aware error reporting
 Reproducing errors from error messages is hard
 Print errors with names of features that caused them
 Writing custom logger of System.err handler

7. Feature-aware program usage statistics
 Understand how end-users use the program
 Prioritize development efforts, improve usability
 Listener + annotations – no probe methods needed

8. Feature-aware program adaptation
 Adjust to user’s actions as they occur at runtime
 Intelligent ‘tip of the day’, dynamically adaptable UI’s

9. Summary
 Usage of reverse engineering information at runtime
by program themselves
 Making programs recognize and act upon executions of
their own features
 Proof-of-conceptimplementations at:
http://www.featureous.org/jawareness/