The only thing that I do not see here ... is that usually the thread, before dying, needs to in some way signal a waiting parent that it has failed.

You are suggesting that the children signal their parent. Inter-thread communication with a bandwidth of a whole 1-bit.

What would the parent do with the knowledge that 'one of its kids has died'? With that 1 bit bandwidth you cannot even communicate which child has died.

A bit like a station announcer telling you: "a train arrived or departed".

And that is ignoring the fact that inter-thread signalling doesn't work as there is no way to distinguish the source of the signal -- inter-thread or inter-process -- never mind which thread. In addition, every thread within the process that has a signal handler defined, will receive every signal regardless of where it originated from.

All a little pointless when you have the unlimited bandwidth of the return from the join.

I just wonder why you felt the need to suggest this when you've obviously not even attempted to think through the implications, much less actually tried it.


With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?


In reply to Re^2: Threads Timeout by BrowserUk
in thread Threads Timeout by Gary Yang

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.