04-02-2019
Quote:
Originally Posted by
drew77
I thought the temp files were automatically deleted upon reboots.?
Everything in
/tmp is removed on reboot by default on some operating systems unless a local systems administrator decides to change that policy. I have no idea what Ubuntu does by default nor what the sysadmins who run your site have decided to implement.
It never hurts anything if you decide to clean up your temporary files when you're done with them!
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT DEBIAN
apache::session::lock::file
Apache::Session::Lock::File(3pm) User Contributed Perl Documentation Apache::Session::Lock::File(3pm)
NAME
Apache::Session::Lock::File - Provides mutual exclusion using flock
SYNOPSIS
use Apache::Session::Lock::File;
my $locker = new Apache::Session::Lock::File;
$locker->acquire_read_lock($ref);
$locker->acquire_write_lock($ref);
$locker->release_read_lock($ref);
$locker->release_write_lock($ref);
$locker->release_all_locks($ref);
$locker->clean($dir, $age);
DESCRIPTION
Apache::Session::Lock::File fulfills the locking interface of Apache::Session. Mutual exclusion is achieved through the use of temporary
files and the "flock" function.
CONFIGURATION
The module must know where to create its temporary files. You must pass an argument in the usual Apache::Session style. The name of the
argument is LockDirectory and its value is the path where you want the lockfiles created. Example:
tie %s, 'Apache::Session::Blah', $id, {LockDirectory => '/var/lock/sessions'}
If you do not supply this argument, temporary files will be created in /tmp.
NOTES
clean
This module does not unlink temporary files, because it interferes with proper locking. This can cause problems on certain systems (Linux)
whose file systems (ext2) do not perform well with lots of files in one directory. To prevent this you should use a script to clean out
old files from your lock directory. The meaning of old is left as a policy decision for the implementor, but a method is provided for
implementing that policy. You can use the "clean" method of this module to remove files unmodified in the last $age seconds. Example:
my $l = new Apache::Session::Lock::File;
$l->clean('/var/lock/sessions', 3600) #remove files older than 1 hour
acquire_read_lock
Will do nothing if write lock is in effect, only set readlock flag to true.
release_read_lock
Will do nothing if write lock is in effect, only set readlock flag to false.
Win32 and Cygwin
Windows cannot escalate lock, so all locks will be exclusive.
release_read_lock not supported - it is not used by Apache::Session.
When deleting files, they are not locked (Win32 only).
AUTHOR
This module was written by Jeffrey William Baker <jwbaker@acm.org>.
SEE ALSO
Apache::Session
perl v5.10.1 2010-10-18 Apache::Session::Lock::File(3pm)