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Thread::Queue(3)       Perl Programmers Reference Guide	      Thread::Queue(3)

NAME
       Thread::Queue - thread-safe queues

SYNOPSIS
	   use Thread::Queue;
	   my $q = new Thread::Queue;
	   $q->enqueue("foo", "bar");
	   my $foo = $q->dequeue;    # The "bar" is still in the queue.
	   my $foo = $q->dequeue_nb; # returns "bar", or undef if the queue was empty
	   my $left = $q->pending;   # returns the number of items still in the queue

DESCRIPTION
       A queue, as implemented by "Thread::Queue" is a thread-safe data struc-
       ture much like a list.  Any number of threads can safely add elements
       to the end of the list, or remove elements from the head of the list.
       (Queues don't permit adding or removing elements from the middle of the
       list).

FUNCTIONS AND METHODS
       new     The "new" function creates a new empty queue.

       enqueue LIST
	       The "enqueue" method adds a list of scalars on to the end of
	       the queue.  The queue will grow as needed to accommodate the
	       list.

       dequeue The "dequeue" method removes a scalar from the head of the
	       queue and returns it. If the queue is currently empty,
	       "dequeue" will block the thread until another thread "enqueue"s
	       a scalar.

       dequeue_nb
	       The "dequeue_nb" method, like the "dequeue" method, removes a
	       scalar from the head of the queue and returns it. Unlike
	       "dequeue", though, "dequeue_nb" won't block if the queue is
	       empty, instead returning "undef".

       pending The "pending" method returns the number of items still in the
	       queue.

SEE ALSO
       threads, threads::shared

perl v5.8.8			  2006-06-14		      Thread::Queue(3)
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