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Hi Drod,<br>
<br>
Assuming your application is a C node, and that the library codebase
is the same as for NIFs and whatnot, I'd expect that allocating
structures / copying data is the appropriate behaviour when creating
Erlang terms -- it's the simple way to transfer that data back to
Erlang avoiding ownership issues and mutable state (or at least
making it much harder to unintentionally do it.)<br>
<br>
I've only dealt with NIFs though, and am not an expert on them, so
probably someone else can probably clarify this better.<br>
<br>
<br>
Cheers,<br>
<br>
<div class="moz-cite-prefix">On 08/09/14 10:08, Dror Mein wrote:<br>
</div>
<blockquote
cite="mid:1410167335.29492.YahooMailNeo@web126701.mail.ne1.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff;
font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial,
Lucida Grande, sans-serif;font-size:12pt">
<div>Hi all,</div>
<div>I'm writing a c application that communicates with an
erlang node. In order to send messages to the node I need to
create erlang terms (ETERM structure).</div>
<div>it appears that all functions in the C library "erl_eterm"
allocate memory when creating erlang terms. </div>
<div>For example, erl_mk_binary copies the binary provided to
it, instead of only creating the pointer.</div>
<div>I want to prevent this memory allocation to optimize
speed. </div>
<div>Has anyone done this before? </div>
<div>Is there a better way to create eterms?</div>
<div><br>
</div>
<div style="color: rgb(0, 0, 0); font-size: 16px; font-family:
HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; font-style: normal; background-color:
transparent;">Thanks</div>
</div>
<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Guilherme
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PGP: 0x35CB8191 / 1968 5252 3901 B40F ED8A D67A 9330 79B1 35CB 8191
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