man Thread::Queue () - thread-safe queues

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 CWThread::Queue is a thread-safe data structure 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 CWnew function creates a new empty queue.
enqueue LIST
The CWenqueue 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 CWdequeue method removes a scalar from the head of the queue and returns it. If the queue is currently empty, CWdequeue will block the thread until another thread CWenqueues a scalar.
dequeue_nb
The CWdequeue_nb method, like the CWdequeue method, removes a scalar from the head of the queue and returns it. Unlike CWdequeue, though, CWdequeue_nb won't block if the queue is empty, instead returning CWundef.
pending
The CWpending method returns the number of items still in the queue.

SEE ALSO

threads, threads::shared