[erlang-questions] enif_get_resource and reference counting

[John Doe]

Hi,
Does successful call of enif_get_resource increase reference counter on a
resource, like  enif_keep_resource does?
Or It is neccessary to do
enif_get_resource(...);
enif_keep_resource(...);
...some job...
enif_release_resource(...);

And if it does not increment the counter, can the resource become destroyed
in the another thread between calls to enif_get_resource and
enif_keep_resource?
I'm afraid of race condition there.
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