Right now I am polling the file every 200ms and looking for the contents to change (ie. to be appended to).

The Perl application includes a substantial Tk GUI interface component, and it also writes files to send messages to other applications, is doing some computations for the GUI interface, etc. Its doing other things but when a message comes in from this C application that is the 'high priority' task and should be processed as soon as possible.

Data does not stream in large volumes per se, but when new data is there it is highly desireable to process it as soon as possible.

In reply to Re^2: using $SIG as an IPC interrupt? by bobbob
in thread using $SIG as an IPC interrupt? by bobbob

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