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Thread::Queue(3pm) Perl Programmers Reference Guide Thread::Queue(3pm)
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 2001-09-21 Thread::Queue(3pm)
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This page was generated on Sat Sep 8 16:38:44 GMT 2007
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