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Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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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.

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.

ISBN 9781906966027Perl Language Reference ManualSee the print edition