[erlang-questions] Erlang/OTP 21.0-rc1 (Release Candidate)

[Lukas Larsson]

On Thu, May 3, 2018 at 3:07 PM, Max Lapshin <max.lapshin@REDACTED> wrote:

> Not sure about new logging:
>
> $ erl
>
> Erlang/OTP 21 [RELEASE CANDIDATE 1] [erts-10.0] [source] [64-bit]
> [smp:4:4] [ds:4:4:10] [async-threads:1] [hipe] [dtrace]
>
>
> Eshell V10.0  (abort with ^G)
>
> 1> whereis(error_logger).
>
> undefined
>
> 2>
>
>
> From http://erlang.org/documentation/doc-10.0-rc1/
> lib/kernel-6.0/doc/html/error_logger.html  I do not see that error_logger
> is no more with us.
>
> Is it a existing process or it is completely abandoned?
>

The error_logger event handler is started lazily when the first
error_logger:add_report_handler call is done. So the new logging framework
does not use the error_logger process, but it is started if legacy code
uses it. All calls to error_logger:*_report/msg are redirected to logger
which then decides what to do with them.

Lukas
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