[erlang-questions] Why is decode_packet so fast?

[Adam Lindberg]

Just for the record, a built-in function is a function implemented in C straight in the virtual machine. That is why they are so fast. You can make your own, but that would require patching the VM.

Cheers,
Adam

----- "Sergey S" <ad.sergey@REDACTED> wrote:

> Hello.
> 
> > erts/emulator/beam/erl_bif_port.c and
> erts/emulator/beam/packet_parser.c
> 
> It looks like I made a bad shot... =)
> 
> Thanks.
> 
> --
> Sergey.
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