1File::Flock(3)        User Contributed Perl Documentation       File::Flock(3)
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NAME

6        File::Flock - file locking with flock
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SYNOPSIS

9        use File::Flock;
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11        lock($filename);
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13        lock($filename, 'shared');
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15        lock($filename, undef, 'nonblocking');
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17        lock($filename, 'shared', 'nonblocking');
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19        unlock($filename);
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21        my $lock = new File::Flock '/somefile';
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23        lock_rename($oldfilename, $newfilename)
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DESCRIPTION

26       Lock files using the flock() call.  If the file to be locked does not
27       exist, then the file is created.  If the file was created then it will
28       be removed when it is unlocked assuming it's still an empty file.
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30       Locks can be created by new'ing a File::Flock object.  Such locks are
31       automatically removed when the object goes out of scope.  The unlock()
32       method may also be used.
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34       lock_rename() is used to tell File::Flock when a file has been renamed
35       (and thus the internal locking data that is stored based on the
36       filename should be moved to a new name).  unlock() the new name rather
37       than the original name.
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LICENSE

40       File::Flock may be used/modified/distibuted on the same terms as perl
41       itself.
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AUTHOR

44       David Muir Sharnoff <muir@idiom.org>
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48perl v5.12.0                      2008-03-28                    File::Flock(3)