NAME

Thread::Synchronized - synchronize subroutine calls between threads

SYNOPSIS

            

              
              
use Thread::Synchronized;  # activate synchronized and method attribute
sub foo : synchronized { } # only one subroutine running at a time
sub bar : synchronized method { } # only one method per object
            
          

DESCRIPTION

            

              
              
                 *** A note of CAUTION ***
This module only functions on Perl versions 5.8.0 and later.
And then only when threads are enabled with -Dusethreads.  It
is of no use with any version of Perl before 5.8.0 or without
threads enabled.
                 *************************
            
          

This module currently adds one feature to threaded programs: the "synchronized" and "method" subroutine attributes which causes calls to that subroutine to be automatically synchronized between threads (only one thread can execute that subroutine at a time or per object at a time).

REQUIRED MODULES

            

              
              
(none)
            
          

CAVEATS

This module is implemented using a source filter. This has the advantage of not needing to incur any runtime overhead. But this of course happens at the expense of a slightly longer compile time.

AUTHOR

Elizabeth Mattijsen, <liz@dijkmat.nl>.

Please report bugs to <perlbugs@dijkmat.nl>.

COPYRIGHT

Copyright (c) 2003 Elizabeth Mattijsen <liz@dijkmat.nl>. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

threads.