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# lock

Perl 5 version 18.2 documentation
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# lock

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage

- lock THING

  This function places an advisory lock on a shared variable or referenced object contained in THING until the lock goes out of scope.

  The value returned is the scalar itself, if the argument is a scalar, or a reference, if the argument is a hash, array or subroutine.

  lock() is a "weak keyword" : this means that if you've defined a function by this name (before any calls to it), that function will be called instead. If you are not under `use threads::shared` this does nothing. See threads::shared.