I recently encountered an issue where a partial or functional component was re-rendered multiple times, resulting in an inline function call being executed multiple times as well. This led to multiple database requests instead of just one. The problem was challenging to debug. I initially had some f…

0.1.0 is out and documented: GitHub - tagbase-io/tracee: Trace function calls in concurrent Elixir processes. · GitHub Also the Elixir forum post: Tracee - Trace function calls in concurrent Elixir processes

I now ended up with the following helper for my ExUnit.Cases: def setup_trace(%{trace: mfas}) when is_list(mfas) do :dbg.start() :dbg.tracer() :dbg.p(:all, :c) Enum.each(mfas, fn {mod, fun, arity} -> :dbg.tp(mod, fun, arity, []) end) on_exit(fn -> :dbg.stop() end) end def setup_t…

Take a look at Extrace. It’ll format traces with elixir syntax over erlang syntax.

Expanded my code now like this: def setup_trace(%{trace: mfas}) when is_list(mfas) do {:ok, pid} = Agent.start_link(fn -> %{} end) :dbg.start() :dbg.tracer( :process, {fn {:trace, _pid, :call, {mod, fun, args}}, _state -> Agent.update(pid, fn calls -> Map.update(calls,…

Opps Sunday afternoon programming escalation: defmodule Tracer do @moduledoc false import ExUnit.Assertions, only: [assert: 1] def start_link do Agent.start_link(fn -> %{expectations: %{}, traces: %{}} end, name: __MODULE__) :dbg.start() :dbg.tracer( :process, {fn …

Well here it is: GitHub - tagbase-io/tracee: Trace function calls in concurrent Elixir processes. · GitHub

Some description would be nice. :smiley:

Elixir Programming Language Forum

Tracing and asserting function calls

Questions & Help Questions

ream88 April 22, 2024, 7:04am 8

As soon as its ready for prime time .. :dbg crashes sometimes on me