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Re^3: is ||= threadsafe?

by ikegami (Pope)
on Oct 25, 2010 at 04:27 UTC ( #867132=note: print w/replies, xml ) Need Help??


in reply to Re^2: is ||= threadsafe?
in thread is ||= threadsafe?

segmentation fault, premature deallocation and segmentation fault (respectively) are serious problems in any scenario.

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Re^4: is ||= threadsafe?
by BrowserUk (Pope) on Oct 25, 2010 at 04:56 UTC
    segmentation fault, premature deallocation and segmentation fault (respectively)

    I challenge you to demonstrate any one of those.

    And when you can't, come back and I'll explain why you can't.

      Well, a refcount increase is an increment, and increment operations aren't necessarily thread safe, so a refcount increase is not necessarily thread-safe.

      Update: Fixed unintentional misquote, used clearer wording

        x = x + 1, which you've already said isn't safe

        I never said that. I never implied that. For a start, what is "x"? It's not a perl variable is it. So it's just a meaningless equation.

        Do I need to demonstrate further,

        Yes. You need to demonstrate an actual segfault.

        Why. Because what you are suggesting is possible, is IMPOSSIBLE. IT CANNOT HAPPEN.

        Which makes your unfounded speculation: FUD. And, given that it is coming from you, a usually reliable and knowledgeable source, makes it dangerous and significant FUD. Possibly even deliberately malicious FUD.

        So please, demonstrate your good intent by either:

        1. demonstrating a segfault using one of your original three perl statements.
        2. withdrawing the FUD.

        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.

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