interactive tasks: solve deadlocks?
interactive tasks: logging of messages
terminology: problem -> task ?
-box: memory usage statistics (need to search for VMPeak in /proc/$PID/status, but it disappears too early)
-box: explicit breakpoints are reported as syscall #-1
Judges
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Various ideas:
scores dependent on time (like PL olympiad)
-box: configurable access to timers and /proc/self/{stat,fd}
box: limit the total amount of data written to files, so that quotas don't have to be set up
TomGav
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recursive try-ln for dir input
clean and well-defined expansion (beware of per-test re-expansion)
-machine-readable log file and/or metadata output from the sandbox
configurable names of in/out files (independent of $PROBLEM)
paranoidly check file mode/owner before running the sandbox