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TheFirstAvenger avatar TheFirstAvenger commented on July 20, 2024 1

@davydog187 we do have support for LV 0.18 in main, however #26 is a real issue that I have not yet been able to resolve and was hoping to figure out before cutting an official hex release. Could you try main in your project and let me know if you run into the same issue outlined in #26? Either way if you could report your findings in that issue, it would be greatly appreciated.

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davydog187 avatar davydog187 commented on July 20, 2024

@TheFirstAvenger appreciate it! I'll give it a run as soon as I can and report back

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davydog187 avatar davydog187 commented on July 20, 2024

@TheFirstAvenger I was able to get it installed against the main branch. However, when running against the :cowboy_handler.execute/2 function, it resulted in a lot of spans and crashed the BEAM.

[debug] flame_on trace: call {:gen, :"-call/4-fun-0-", 4}, stack_size: 100
[debug] flame_on trace: call {:gen, :do_call, 4}, stack_size: 101
[debug] flame_on trace: call {:erlang, :monitor, 2}, stack_size: 102
[debug] flame_on trace: return_to {:gen, :do_call, 4}, stack_size: 103
[debug] flame_on trace: out {:gen, :do_call, 4}, stack_size: 102
[debug] flame_on trace: in {:gen, :do_call, 4}, stack_size: 103




[os_mon] cpu supervisor port (cpu_sup): Erlang has closed
[os_mon] memory supervisor port (memsup): Erlang has closed
[1]    27037 bus error  mix phx.server

I believe this may be related to #26.

However, running against a smaller function like Phoenix.Flash.get/2 worked just fine

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florianb avatar florianb commented on July 20, 2024

Hi - i got a stacktrace while giving it (main) a try, probably this is of any help:

[debug] Replied in 536µs
[debug] flame_on trace: call {:meck, :passthrough, 1}, stack_size: 1
[debug] flame_on trace: call {:meck_code_gen, :get_current_call, 0}, stack_size: 2
[debug] flame_on trace: return_to :undefined, stack_size: 3
[debug] flame_on trace: call {:meck_util, :original_name, 1}, stack_size: 1
[debug] flame_on trace: call {:erlang, :atom_to_list, 1}, stack_size: 2
[debug] flame_on trace: return_to :undefined, stack_size: 3
[debug] flame_on trace: call {:erlang, :++, 2}, stack_size: 1
[debug] flame_on trace: return_to :undefined, stack_size: 2
[debug] flame_on trace: call {:erlang, :list_to_atom, 1}, stack_size: 1
[debug] flame_on trace: return_to :undefined, stack_size: 2
[debug] flame_on trace: return_to :undefined, stack_size: 1
[error] GenServer FlameOn.Capture.Server terminating
** (FunctionClauseError) no function clause matching in FlameOn.Capture.Server.Stack.handle_trace_return_to/3
    (flame_on 0.5.2) lib/flame_on/capture/server/stack.ex:54: FlameOn.Capture.Server.Stack.handle_trace_return_to([%FlameOn.Capture.Block{id: "starter", children: [%FlameOn.Capture.Block{id: "0724a9fb-fb08-4904-b7a0-ed0c9380088d", children: [], duration: 6, function: {:erlang, :list_to_atom, 1}, level: 1, absolute_start: 1683622483164196, max_child_level: nil}, %FlameOn.Capture.Block{id: "81b2736a-ef0a-49cc-8e29-368e5cd8be1a", children: [], duration: 16, function: {:erlang, :++, 2}, level: 1, absolute_start: 1683622483164176, max_child_level: nil}, %FlameOn.Capture.Block{id: "4c62feb3-6e66-4625-bd55-cf74b75149e8", children: [%FlameOn.Capture.Block{id: "e10b8d3e-33fa-4e5b-9b09-662ca51c6e2a", children: [], duration: 4, function: {:erlang, :atom_to_list, 1}, level: 2, absolute_start: 1683622483164152, max_child_level: nil}], duration: 9, function: {:meck_util, :original_name, 1}, level: 1, absolute_start: 1683622483164147, max_child_level: nil}, %FlameOn.Capture.Block{id: "fb54b54b-296d-4a06-9476-800e7f555550", children: [%FlameOn.Capture.Block{id: "6cfde114-1060-46c5-9f6e-1d2c1bcdf257", children: [], duration: 4, function: {:meck_code_gen, :get_current_call, 0}, level: 2, absolute_start: 1683622483164139, max_child_level: nil}], duration: 15, function: {:meck, :passthrough, 1}, level: 1, absolute_start: 1683622483164128, max_child_level: nil}], duration: nil, function: {:cowboy_handler, :execute, 2}, level: nil, absolute_start: 0, max_child_level: nil}], :undefined, 1683622483164203)
    (flame_on 0.5.2) lib/flame_on/capture/server.ex:52: FlameOn.Capture.Server.handle_info/2
    (stdlib 4.3) gen_server.erl:1123: :gen_server.try_dispatch/4
    (stdlib 4.3) gen_server.erl:1200: :gen_server.handle_msg/6
    (stdlib 4.3) proc_lib.erl:240: :proc_lib.init_p_do_apply/3
Last message: {:trace_ts, #PID<0.3788.0>, :return_to, :undefined, {1683, 622483, 164203}}
State: %FlameOn.Capture.Server.State{stack: [%FlameOn.Capture.Block{id: "starter", children: [%FlameOn.Capture.Block{id: "0724a9fb-fb08-4904-b7a0-ed0c9380088d", children: [], duration: 6, function: {:erlang, :list_to_atom, 1}, level: 1, absolute_start: 1683622483164196, max_child_level: nil}, %FlameOn.Capture.Block{id: "81b2736a-ef0a-49cc-8e29-368e5cd8be1a", children: [], duration: 16, function: {:erlang, :++, 2}, level: 1, absolute_start: 1683622483164176, max_child_level: nil}, %FlameOn.Capture.Block{id: "4c62feb3-6e66-4625-bd55-cf74b75149e8", children: [%FlameOn.Capture.Block{id: "e10b8d3e-33fa-4e5b-9b09-662ca51c6e2a", children: [], duration: 4, function: {:erlang, :atom_to_list, 1}, level: 2, absolute_start: 1683622483164152, max_child_level: nil}], duration: 9, function: {:meck_util, :original_name, 1}, level: 1, absolute_start: 1683622483164147, max_child_level: nil}, %FlameOn.Capture.Block{id: "fb54b54b-296d-4a06-9476-800e7f555550", children: [%FlameOn.Capture.Block{id: "6cfde114-1060-46c5-9f6e-1d2c1bcdf257", children: [], duration: 4, function: {:meck_code_gen, :get_current_call, 0}, level: 2, absolute_start: 1683622483164139, max_child_level: nil}], duration: 15, function: {:meck, :passthrough, 1}, level: 1, absolute_start: 1683622483164128, max_child_level: nil}], duration: nil, function: {:cowboy_handler, :execute, 2}, level: nil, absolute_start: 0, max_child_level: nil}], config: %FlameOn.Capture.Config{module: :cowboy_handler, function: :execute, arity: 2, timeout: 15000, target_node: :nonode@nohost, reply_to: {:live_component, #PID<0.3772.0>, :flame_on_component}}, trace_started?: false}

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