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Full Discussion: File read/ write operation
Operating Systems Linux File read/ write operation Post 302425573 by Corona688 on Friday 28th of May 2010 01:21:27 PM
Old 05-28-2010
Quote:
Originally Posted by xs2punit
I do not want to lock anything.
Clearly. You should, though. Otherwise you're going to hit all the pitfalls we've been telling you about repeatedly, and all you'll be doing by doing it in AJAX instead is building your own slower, buggier, flock-over-http protocol from the ground up.
Quote:
Issue is server doesn't release the file to be read.
Doesn't release the file? What error do you get when you try to retrieve it -- does it think the file's not present at all, or give 'permission denied', etc. Either is quite odd, most UNIX systems don't do mandatory locking of open files, nor play tricks to hide files until they're complete; what system are you using?

Last edited by Corona688; 05-28-2010 at 02:32 PM..
 

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Mail::SpamAssassin::Util::Progress(3pm) 		User Contributed Perl Documentation		   Mail::SpamAssassin::Util::Progress(3pm)

NAME
Mail::SpamAssassin::Util::Progress - Progress bar support for SpamAssassin SYNOPSIS
my $progress = Mail::SpamAssassin::Util::Progress->new({total => 100}); $msgcount = 0; foreach my $message (@messages) { # do something here $msgcount++; $progress->update($msgcount); } $progress->final(); DESCRIPTION
This module implements a progress bar for use in SpamAssassin scripts and modules. It allows you to create the progress bar, update it and print out the final results of a particular run. new public class (Mail::SpamAssassin::Util::Progress) new (\% $args) Description: Creates a new Mail::SpamAssassin::Util::Progress object, valid values for the $args hashref are: total (required) The total number of messages expected to be processed. This item is required. fh [optional] An optional filehandle may be passed in, otherwise STDERR will be used by default. term [optional] The module will attempt to determine if a valid terminal exists on the STDIN filehandle. This item allows you to override that value. init_bar public instance () init_bar() Description: This method creates the initial progress bar and is called automatically from new. In addition you can call init_bar on an existing object to reset the bar to it's original state. update public instance () update ([Integer $num_done]) Description: This method is what gets called to update the progress bar. You may optionally pass in an integer value that indicates how many messages have been processed. If you do not pass anything in then the num_done value will be incremented by one. final public instance () final ([Integer $num_done]) Description: This method should be called once all processing has finished. It will print out the final msgs per sec calculation and the total time taken. You can optionally pass in a num_done value, otherwise it will use the value calculated from the last call to update. perl v5.14.2 2011-06-06 Mail::SpamAssassin::Util::Progress(3pm)
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