Suppose we create a link like this:
link = LinkCreate["mylink", LinkMode -> Listen]
How can we wait until this link gets connected to by another process, and time out if there's no incoming connection?
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3$\begingroup$ What I'm really looking for is confirmation that the answer below is correct! $\endgroup$– SzabolcsJun 19, 2014 at 1:25
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$\begingroup$ Related W Community thread. $\endgroup$– SzabolcsJun 19, 2014 at 18:58
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$\begingroup$ I can absolutely certify that the answer is correct (although incomplete...there is no timeout that I'm aware of). I'll add a bit more technical detail to the Community thread, where you ask slightly different questions and make a misleading assertion. But the answer as I now see it here is correct without qualification. $\endgroup$– John FultzJul 7, 2014 at 1:46
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1 Answer
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LinkActivate can be used for this. This Mathematica function is not documented, however the C version is.
From kernel 1, do
link = LinkCreate["mylink", LinkMode -> Listen]
LinkActivate[link] (* this will block and wait for an incoming connection *)
Now from kernel 2 (or another program, if using the C API), do
link = LinkConnect["mylink"]
LinkActivate[link]
(* will return immediately; at this point LinkActivate in kernel 1 also returns *)
answered Jun 19, 2014 at 1:24