erszcz / ecg

Generate a GraphViz .dot file describing an Erlang module call graph

ecg

Generate a GraphViz .dot file describing a module call graph.

Build

rebar3 escriptize

Usage

bin/ecg lists /Users/erszcz/apps/erlang/20.0/lib/erlang/lib/stdlib-3.4.1/ebin/lists.beam
open lists.png      # on macOS
xdg-open lists.png  # on Linux

bin/ecg dtls /Users/erszcz/src/erlang/otp/lib/ssl/ebin/dtls_udp_listener.beam \
             /Users/erszcz/src/erlang/otp/lib/ssl/ebin/dtls_connection.beam
cat dtls.dot
open dtls.png       # on macOS
xdg-open dtls.png   # on Linux

Similar tools

• Recon's app_deps.erl is the thing if you're looking into visualizing relations between Erlang applications. Good stuff!

• Grapherl will show you dependencies between modules. Very nice!

• For visualizing FSM states you might try these remnants of the past (YMMV, don't complain I didn't warn you):

  • https://github.com/erszcz/graph_draw - not authored by me, just scavenged off the internet and archived here on GitHub

  • http://erlang.org/pipermail/erlang-questions/2001-October/003717.html