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tests whether there is an expression ready to read from the specified MathLink connection.
LinkReadyQ[link, t]
waits for up to t seconds to see if an expression becomes ready to read.
LinkReadyQ[{link1, link2, ...}, t]
tests all the linki in parallel, returning as soon as any of them are ready to read from.
  • LinkReadyQ[{link1, link2, ...}, t] returns a list of True and False, specifying which of the linki are ready to read from.
  • If LinkReadyQ[link] returns False, then LinkRead[link] will block, and will not return until something becomes available to read on link.
  • LinkReadyQ[link] tests whether there is any data to read; it cannot determine whether the data represents a complete expression.
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