The command is arsload which is a document ingestion utility for IBM DB2 OnDemand Content Manager. I am forcing an error condition which causes this situation. When I run the same command on the command line I get a message telling the pid was stopped. When running my script I am sing top and see the parent and child threads in 'stop' state. If I do not send the SIGCONT signal nothing happens. The processes remain in the 'stop' state. If I send the signal just to the child, the parent remains stopped. I have to signal the parent as well.

As for the parent, the while loop at the end of the script should output every 5 seconds to show it is waiting. Nothing is output even if I signal the child to continue which ends the child.

I tried SIG{STOP} = sub {print STDERR "$$ stopped\n";}; in the child and nothing was output. I then tried it in the parent and nothing was output.

Maybe I am being mislead by the stop state thinking it is the stop signal? For debug purposes only, I have been toying with the idea of putting in a signal handler for almost every signal.

In reply to Re^2: Stopped child hangs parent by jafoba
in thread Stopped child hangs parent by jafoba

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.