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Home: Perl Programming Help: Intermediate: Flock: Unlock before close?

gregarios stranger Feb 12, 2002, 1:25 PM Post #1 of 8 (414 views) Flock: Unlock before close? Can't Post When using flock, is there any reason why you would want to unlock a file right before closing it? Or is closing it without unlocking it better? • Greg J Piper • [url=http://www.macpicks.com]MacPiCkS

yapp User Feb 13, 2002, 3:33 AM Post #2 of 8 (407 views) Re: [gregarios] Flock: Unlock before close? [In reply to] Can't Post perl as of version 5.4 doesn't require a unlock before closing. I thought that the close() function also flushes all buffers. If that's true for filehandles, It means that there could still be data written to the file when the close() function is called. So for that case, It would be better not to unlock the file before closing it. Yet Another Perl Programmer _________________________________ ~~> [url=http://www.codingdomain.com]www.codingdomain.com <~~ More then 3500 X-Forum [url=http://www.codingdomain.com/cgi-perl/downloads/x-forum]Downloads!

gregarios stranger Feb 13, 2002, 9:09 AM Post #3 of 8 (403 views) Re: [yapp] Flock: Unlock before close? [In reply to] Can't Post What if I have Perl 5.00503? • Greg J Piper • [url=http://www.macpicks.com]MacPiCkS

yapp User Feb 13, 2002, 9:20 AM Post #4 of 8 (400 views) Re: [gregarios] Flock: Unlock before close? [In reply to] Can't Post Sorry. I ment perl 5.004 So your per version is actually higher. Yet Another Perl Programmer _________________________________ ~~> [url=http://www.codingdomain.com]www.codingdomain.com <~~ More then 3500 X-Forum [url=http://www.codingdomain.com/cgi-perl/downloads/x-forum]Downloads!

gregarios stranger Feb 13, 2002, 9:22 AM Post #5 of 8 (398 views) Re: [yapp] Flock: Unlock before close? [In reply to] Can't Post Thank you very much. :-) • Greg J Piper • [url=http://www.macpicks.com]MacPiCkS

rGeoffrey User / Moderator Feb 19, 2002, 9:30 PM Post #6 of 8 (387 views) Re: [gregarios] Flock: Unlock before close? [In reply to] Can't Post I also just close the file without releasing the lock. But I know of one good programmer who insists that you should explicitly close it. His argument is that someone may add extra code later and the close will get too far from the open and locking and you might forget about the lock. Just an extra reminder to close files as soon as possible to avoid bad things from happening.

Paul Enthusiast Feb 20, 2002, 2:27 AM Post #7 of 8 (383 views) Re: [rGeoffrey] Flock: Unlock before close? [In reply to] Can't Post >> But I know of one good programmer who insists that you should explicitly close it. << close FH; automatically opens the lock. (This post was edited by RedRum on Feb 20, 2002, 2:28 AM)

yapp User Feb 20, 2002, 9:03 AM Post #8 of 8 (376 views) Re: [rGeoffrey] Flock: Unlock before close? [In reply to] Can't Post I've been looking about the thing I mentioned above: - the close() function flushes all buffers, so there could still be data written to the file. - that means you shouldn't unlock it earlier. So let Perl the job for you. Yet Another Perl Programmer _________________________________ ~~> [url=http://www.codingdomain.com]www.codingdomain.com <~~ More then 3500 X-Forum [url=http://www.codingdomain.com/cgi-perl/downloads/x-forum]Downloads!

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