This is a basic harness to run a Java compilation task in a loop for benchmarking / profiling purposes. Basically, you should get the arguments for the javac task you're interested in and then pass them here. The easiest way to run is via Gradle (from repo root):

./gradlew :compile-bench:run --args='javac_args'

The javac arguments should use absolute paths since you‘re running from the root of the NullAway repo (and should probably include the -d argument). If that’s painful you can possibly hack around things by adding a symlink to the compile-bench folder.