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Message from discussion How do I trace by module name?
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Yang Liu  
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 More options Oct 27 2012, 7:29 am
From: Yang Liu <liuyang124...@gmail.com>
Date: Sat, 27 Oct 2012 19:28:50 +0800
Local: Sat, Oct 27 2012 7:28 am
Subject: Re: [erlang-questions] How do I trace by module name?
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I always use this, i call it at start, then it trace every call on the
module

open_tracer(Module) ->
     dbg:tracer(),
     dbg:p(all, [call]),
     dbg:tpl(Module, [{'_', [], [{return_trace}]}]).
 在 2012-10-27 傍晚6:16，"Alex Shneyderman" <a.shneyder...@gmail.com>写道：

> I am trying to use dbg. Here is what I did:

> Erlang R15B (erts-5.9) [source] [64-bit] [smp:8:8] [async-threads:0]
> [hipe] [kernel-poll:false]

> Eshell V5.9  (abort with ^G)
> 1> compile:file("fib.erl",[debug_info]).
> {ok,fib}
> 2> dbg:tracer().
> {ok,<0.38.0>}
> 3> dbg:tpl(fib,c).
> {ok,[{matched,nonode@nohost,3},{saved,c}]}
> 4> fib:fib(21).
> 231
> 5> dbg:ltp().
> c: [{'_',[],[{message,{caller}}]}]
> caller_exception_trace: cx
> caller_trace: c
> cx: [{'_',[],[{exception_trace},{message,{caller}}]}]
> exception_trace: x
> x: [{'_',[],[{exception_trace}]}]
> ok

> Or something is amiss with my code, dbg or something else? Any ideas?
> Or can I even trace by module. I tried to trace by process and that worked
> fine.

> Cheers,
> Alex.
> _______________________________________________
> erlang-questions mailing list
> erlang-questi...@erlang.org
> http://erlang.org/mailman/listinfo/erlang-questions

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