libdweller

libdweller is a library for parsing DWARF debug data.

I hacked it together over the course of about 3 days, so the code is still very hacky and experimental, but hopefully with time I can make it more stable and production-ready.

Building

$ meson . build
$ ninja -C build
$ ./build/examples/stacktrace

Testing

(cd build; meson test --no-rebuild)

Performance

This comparison is in no way representative, since dweller is still very feature-incomplete, but considering dwarfdump can already successfully provide most of the same information that existing tools can I was quite impressed by the performance thus far.

Results

libdweller (debug, initial commit)

$ libc="/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.27.so"
$ time ./build/dwarfdump/dwarfdump $libc > /dev/null

real    0m2.641s
user    0m2.565s
sys     0m0.060s

libdweller (release, latest version)

$ libc="/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.27.so"
$ time ./build/dwarfdump/dwarfdump $libc > /dev/null

real    0m0.285s
user    0m0.271s
sys     0m0.012s

libdwarf (stripped)

$ time dwarfdump $libc > /dev/null

real    0m4.132s
user    0m4.080s
sys     0m0.048s

GNU binutils (stripped)

$ time readelf --debug $libc > /dev/null

real    0m3.845s
user    0m3.808s
sys     0m0.032s

Rust Gimli (debug)

$ time ./target/debug/examples/dwarfdump $libc > /dev/null

real    0m12.111s
user    0m26.364s
sys     0m0.032s

Rust Gimli (stripped release)

$ time ./target/release/examples/dwarfdump $libc > /dev/null

real    0m0.743s
user    0m1.478s
sys     0m0.008s