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    SubjectRe: Non-blocking I/O
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    > Is there any non-blocking I/O available in Linux ?

    Unix has had non blocking I/O since 1978. Man fcntl, selecty and signal

    > For e.g., an application sends some read request and does some other work ...
    > once the data is available, the drivers wakes up (or sends some signal) the
    > user application.

    Yep


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