sys/stdio: add optional function stdio_available #17446
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gschorcht
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A couple of `stdio` backend implementations allow to check for the number of available bytes for reading before the blocking `stdio_read` is called. This helps to implement non-blocking functionalities while waiting for `stdin`.
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@aabadie Thanks for reviewing and merging. |
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Contribution description
This PR provides the definition of an additional
stdiofunction to check how many bytes are available for reading.A number of
stdiobackend implementations allow to check the number of bytes available for reading before calling the blockingstdio_read. This helps to implement non-blocking functionalities while waiting forstdin.This PR provides the implementation for
Testing procedure
Green CI.
Issues/PRs references
Follow-up of PR #17335
Required for PR #17447