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Further details on channel idea

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Matthias Einwag 2014-01-12 01:10:31 +01:00
parent 188167c4b3
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doc/guide-ffi.md
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@ -329,6 +329,12 @@ channel where the writing end (`Chan`) is used exclusively from the C callback
to queue events. The reading end (`Port`) is used in the Rust task which owns
the wrapper object.
Depending on the type of data in the event you might want to convert callback
data from C into a more suitable Rust structure before sending it into the
channel. E.g. it makes sense to convert C strings (`char*`) into Rust strings.
You could also use Rust enumerations to differentiate between multiple types
of events and their data.
Putting this together a wrapper for a library that uses a background thread
that sends events could look like: