in reply to Counting open files?

If you open a file, you can (and should!) close it. Where's the mistic in this? You know which files are open; you opened them didn't you?

Paul

Replies are listed 'Best First'.
Re^2: Counting open files?
by Eyck (Priest) on Jun 22, 2005 at 11:01 UTC
    Have you ever used any libraries?

    If you have, then how do you know what fds it opens? If you answer that, then you have answered my question.

[reply]
      Hmmm ... what version of perl and what OS are you using? The normal behaviour for exec is to close all file descriptors from SYSTEM_MAX_FD+1 to however many you have open. I can envision only a few ways for this error to happen.
      • Your os does not support close-on-exec
      • the code has gone out of it's way to clear the close-on-exec flag
      • $^F was munged (SYSTEM_MAX_FD - normally set to 2 because you normally want stdin, stdout and stderr passed across exec)
      • the code is re-opening stdin, stdout, stderr without first closing them
      -derby
[reply]

      Knowing what libraries you have are using would help us help you.

      Most well-written libraries that open files probably should have a method of closing those files as well.

          -Bryan

[reply]

In Section Seekers of Perl Wisdom