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Re^3: Thread safe equivalent of LINUX touch command

by space_monk (Chaplain)
on Nov 22, 2012 at 23:04 UTC ( #1005196=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Thread safe equivalent of LINUX touch command
in thread Thread safe equivalent of LINUX touch command

Why not? AFAICT, if one thread touches a file then it will succeed, and if another thread tries to touch a file, then it too will succeed. There is nothing wrong in both threads succeeding and I don't think there is any lock issues apart from the actual creation of the file and/or setting of the modification date, which are probably operating/filesystem issues and should be thread safe in any event.

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Comment on Re^3: Thread safe equivalent of LINUX touch command
Re^4: Thread safe equivalent of LINUX touch command
by BrowserUk (Pope) on Nov 22, 2012 at 23:20 UTC
    Why not?

    Because the module modifies multiple pieces of data (times) in a non-atomic manner, with no synchronisation or locking.

    (Stop guessing and look at the **&*%$ code!)


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