http://www.perlmonks.org?node_id=11126854


in reply to Detect whether a writeable filehandle has closed?

Maybe an END block in the child could signal that the filehandle is gone?

Another approach would involve subclassing the filehandle .. ugh.

Alex / talexb / Toronto

Thanks PJ. We owe you so much. Groklaw -- RIP -- 2003 to 2013.

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Re^2: Detect whether a writeable filehandle has closed?
by jdporter (Canon) on Jan 13, 2021 at 17:57 UTC
    Maybe an END block in the child could signal that the filehandle is gone

    The child is not perl, it's a compiled C program.

      OK, so perhaps using the _atexit call (or whatever the equivalent is in your RTL) in the C code. The general idea is for the code to catch that the child has exitted and signal the caller.

      Alex / talexb / Toronto

      Thanks PJ. We owe you so much. Groklaw -- RIP -- 2003 to 2013.