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BUILT-IN MATHEMATICA SYMBOL
LinkReadyQ
LinkReadyQ[link]
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 
in parallel, returning as soon as any of them are ready to read from.
Details
- The
must be active LinkObject objects, as returned by functions like LinkLaunch or Links. - LinkReadyQ[{link1, link2, ...}, t] returns a list of True and False, specifying which of the
are ready to read from. - If LinkReadyQ[link] returns True, then LinkRead[link] will not block under any normal circumstances.
- 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.
- The basic form of LinkReadyQ corresponds to the MathLink library function MLReady().
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