If read returns with an error when interrupted by the signal, the loop exits so you never read from the new file.

If read doesn't return when interrupted by the signal, you don't use the new value of $file so you never read from the new file.

Ideally, the former occurs. Then you could do something like 

use Errno qw( EINTR );

do {
    while (defined($line=$file->read)) {
        print $line;
    }    
} while $! != EINTR;  # Go read from new file.

[download]

I don't have an obvious solution if the read doesn't return. Is this what happens?

In reply to Re: File::Tail issue.. by ikegami
in thread File::Tail issue.. by tuxtoti

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.