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in reply to Re: One piece of code, two mysteries!
in thread One piece of code, two mysteries! (UPDATED.)

Increase the stack_size parameter to meet the requirements of your platform; or omit it entirely and accept the default.

(Ps. I thought that I remembered the minimum stack requirement on Linux was 64k not 16k; but that doesn't gell with the informational message you are getting?)

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.

RIP Neil Armstrong
  • Comment on Re^2: One piece of code, two mysteries!

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Re^3: One piece of code, two mysteries!
by Polyglot (Chaplain) on Oct 05, 2012 at 03:52 UTC
    Ok, when I set it to 16k (16384), I got a segmentation fault. When I commented out the line entirely, it seemed to go to indefinite sleep and returned nothing to the screen. I did not even see the process in "top." I finally tried setting the stack to 65535 and got the following output. 
    # ./test_perl.pl 
1
 2
 3
 4

1
2
3
4

1
 2
 3
 4

1
2
3
4

1
 2
 3
 4

1
2
3
4

    [download]
    Is that what was expected?

    Blessings,

    ~Polyglot~

[reply]
[d/l]
      When I commented out the line entirely,

      Do you mean like this?:

      #use threads stack_size => 4096;

      [download]

      If so, you should have at the very minimum got an error: "Can't call method "async" without a package or object reference at ..."!?

      To disable the stack_size parameter, you should do:

      use threads; # stack_size => 4096;

      [download]
      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.

      RIP Neil Armstrong
[reply]
[d/l]
[select]
        That's interesting. Yes, I commented out the entire line, but got no error message. It was simply as if the program had hung. I had to CTRL + C out of it after I had waited a couple minutes or so. (Tried again later and it went over 12 min. before I lost patience.)

        Just for fun, I just ran it with the "use threads;" implementation, and it gave me the exact same results as with the 64k stack size.

        Blessings,

        ~Polyglot~

[reply]

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