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Topic: Queue


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In the News (Wed 25 Nov 09)

  
  Queue (Java 2 Platform SE 5.0)
Among the exceptions are priority queues, which order elements according to a supplied comparator, or the elements' natural ordering, and LIFO queues (or stacks) which order the elements LIFO (last-in-first-out).
In a FIFO queue, all new elements are inserted at the tail of the queue.
Exactly which element is removed from the queue is a function of the queue's ordering policy, which differs from implementation to implementation.
java.sun.com /j2se/1.5.0/docs/api/java/util/Queue.html   (531 words)

  
  PlanetMath: queue
A queue is a one-dimensional data structure to which new members or elements are generally added (pushed or enqueued) at the end and removed (popped or dequeued) from the start.
For example, in a triage situation, a doctor might choose to treat the second patient to arrive, an old woman who is coughing her lungs out, instead of the first patient, a young man with a paper cut.
This is version 1 of queue, born on 2006-09-15.
planetmath.org /encyclopedia/Queue.html   (380 words)

  
 GNU Queue
GNU Queue is a UNIX process network load-balancing system that features an innovative proxy process mechanism which allows users to control their remote jobs in a nearly seamless and transparent fashion.
The GNU Queue system consists of two components, `queued' which runs as a daemon on every host in the cluster, and `queue' is a user program that allows users to submit jobs to the system.
GNU Queue's load scheduling algorithm is smarter than that of many MPI implementations, which frequently treat all hosts as equal and implement a round-robin algorithm for deciding which to host to run a job on.
www.gnuqueue.org /queue_man/queue.html   (6514 words)

  
 Team Queue   (Site not responding. Last check: 2007-11-05)
Queues and Priority Queues are data structures which are known to most computer scientists.
If an element enters the queue, it first searches the queue from head to tail to check if some of its teammates (elements of the same team) are already in the queue.
Dequeuing is done like in normal queues: elements are processed from head to tail in the order they appear in the team queue.
acm.uva.es /p/v5/540.html   (337 words)

  
 Queue - GNU Project - Free Software Foundation (FSF)   (Site not responding. Last check: 2007-11-05)
Queue is a load-balancing system that lets users control their remote jobs in an intuitive, transparent and nearly seamless way.
Queue can be used as a local replacement for rsh to hosts within a homogeneous cluster under single administrative control.
Queue also supports the more traditional email-based load-balancing and distributed batch-processing facilities using a number of criteria to decide where to send jobs.
www.gnu.org /software/queue   (830 words)

  
 Queue Summary   (Site not responding. Last check: 2007-11-05)
A priority queue, therefore, is one where the elements of the queue are removed according to their priority, as opposed to a normal queue in which the elements are removed according to their arrival.
A practical implementation of a queue of course does have some capacity limit, that depends on the concrete situation it is used in.
Like stacks, queues can be used to remember the search space that needs to be explored at one point of time in traversing algorithms.
www.bookrags.com /Queue   (1226 words)

  
 Minding the Queue: Java 1.5 Adds a New Data Structure Interface
The concept of a queue was emulated by objects being added (an operation commonly known as enqueuing) to the rear of the List (i.e., the rear of the queue) and removed (an operation commonly known as dequeuing) from the List by grabbing objects from the top of the List (i.e., the top of the queue).
If your queue is restricted to a certain size (which is often the case), adding to it using the add method will result in an unchecked exception being thrown.
With the queue implementations you have seen so far, using the offer or add methods to enqueue (and the remove or poll methods to dequeue) assumes that if the queue cannot accommodate an enquing or dequeuing operation, then you don't need to wait to execute the program.
www.devx.com /Java/Article/21983/1954?pf=true   (2241 words)

  
 PF: Packet Queueing and Prioritization
Each queue then has traffic assigned to it based on source or destination address, port number, protocol, etc. A queue may optionally be configured to borrow bandwidth from its parent queue if the parent is being under-utilized.
Queues with a higher priority are preferred during congestion over queues with a lower priority as long as both queues share the same parent (in other words, as long as both queues are on the same branch in the hierarchy).
queue ssh bandwidth 25% { ssh_login, ssh_bulk }
www.openbsd.org /faq/pf/queueing.html   (3845 words)

  
 SGI TPL (IRIX 6.5: Developer/STL_PG )
Defined in the standard header queue, and in the nonstandard backward-compatibility header stack.h.
Returns a mutable reference to the element at the front of the queue, that is, the element least recently inserted.
Returns a const reference to the element at the front of the queue, that is, the element least recently inserted.
techpubs.sgi.com /library/tpl/cgi-bin/getdoc.cgi/0650/bks/SGI_Developer/books/STL_PG/sgi_html/queue.html   (504 words)

  
 Adventure Queue - TheKolWiki
The adventure queue is a feature in the game coding that makes high occurrences of the same adventure in a short period of time less likely.
The adventure queue is 5 encounters long (it was changed from 3 encounters to 5 encounters in Fall of 2006).
The adventure queue is thought to reset at rollover (although this has not been tested).
kol.coldfront.net /thekolwiki/index.php/Queue   (553 words)

  
 Advanced Queuing
Since Oracle AQ queues are implemented in database tables, all the operational benefits of high availability, scalability, and reliability are applicable to queue data.
The address should be the name of another queue in the same database or another Oracle8 database (identified by the database link) in which case the message is propagated to the specified queue and can be dequeued by a consumer with the specified name.
Because the queue table data is also exported, the user is responsible for maintaining application-level data integrity when queue table data are being transported.
www.csee.umbc.edu /help/oracle8/server.815/a67781/c16queue.htm   (3068 words)

  
 Gnu Queue: Linux Clustering Made Easy | Linux Journal
More importantly, GNU Queue allows administrators to place limits on the number of a type of job that can run (say, allow no more than five bogobasicinterpreter jobs to run on any node) or to prevent certain jobs from running when a machines's load is too great.
Before installing GNU Queue on your cluster, you have to make a decision that is basically guided by whether you have root (administrative) privileges on your cluster.
The ``--'' separates GNU Queue options from the options to be given to the command to be run.
www.linuxjournal.com /article/4208   (2802 words)

  
 Cisco - Troubleshooting Input Queue Drops and Output Queue Drops
The queue depth is 75 packets and there have been 187 drops since the interface counters were last cleared.
Based on the type of interface and the type of queueing configured, the number of output queue drops is not explicitly shown, because the output drops counter summarizes the output drops separately at the processing level and at the interrupt level:
Output queue drops occur only if the interface is already congested at interrupt level, so that packets cannot be pulled out of the output queue before the queue becomes full.
www.cisco.com /warp/public/63/queue_drops.html   (2709 words)

  
 QUEUE   (Site not responding. Last check: 2007-11-05)
Queue adaptor cannot be applied to vector because vector does not support pop_front().
Because a queue is a controlled sequence, you cannot obtain an iterator to a queue.
Although you cannot cycle through the contents of a queue via an iterator or access its elements out of sequence, it is possible to enumerate the contents of a queue by repeatedly removing the front element and pushing it onto the rear of the queue until all elements have been examined.
www.sci.brooklyn.cuny.edu /~cis22/stl/queue.htm   (282 words)

  
 Queue Generic Class (System.Collections.Generic)
The ToArray method is used to create an array and copy the queue elements to it, then the array is passed to the Queue constructor that takes IEnumerable, creating a copy of the queue.
An array twice the size of the queue is created, and the CopyTo method is used to copy the array elements beginning at the middle of the array.
The Contains method is used to show that the string "four" is in the first copy of the queue, after which the Clear method clears the copy and the Count property shows that the queue is empty.
msdn2.microsoft.com /en-us/library/7977ey2c.aspx   (861 words)

  
 queue<T, Sequence>
Defined in the standard header queue, and in the nonstandard backward-compatibility header stack.h.
Returns a mutable reference to the element at the front of the queue, that is, the element least recently inserted.
Returns a const reference to the element at the front of the queue, that is, the element least recently inserted.
www.sgi.com /tech/stl/queue.html   (476 words)

  
 Effect.queue   (Site not responding. Last check: 2007-11-05)
Lets examine how events in a queue occor: For a programmer a queue is an Array with events that are stacked on each other to be handled one by one.
The argument you give to queue is called a position and can be used with a different syntax, but we will go into that later.
The scope has defined a queue that is names ‘menuxscope’, this queue can contain for example all the Effects that are related to menus.
blog.railsdevelopment.com /pages/effect/queue   (1534 words)

  
 Queue - Click documentation
Queue notifies interested parties when it becomes empty and when a formerly-empty queue receives a packet.
The empty notification takes place some time after the queue goes empty, to prevent thrashing for queues that hover around 1 or 2 packets long.
Queue additionally notifies interested parties that it is non-full, and when a formerly-full queue gains some free space.
pdos.csail.mit.edu /click/doc/Queue.n.html   (148 words)

  
 Priority Queues and the STL
The standard interface to the FIFO queue simply consists of a push() function, which adds new elements, and a pop() function, which always removes the oldest element.
In the case of the priority queue, there is an approach that is superior to either of these methods.
Those two nodes are then removed from the pool of available nodes (the priority queue.) A new internal node is then created, and it is assigned those two nodes as children.
www.dogma.net /markn/articles/pq_stl/priority.htm   (3201 words)

  
 WoW -> PVP -> Battlegrounds -> Battleground Queue System
After you select an option, you are placed in the queue, and a battle standard icon will attach itself to the lower left area of your minimap, letting you know your queue status.
While you are in a queue, you are free to go wherever and do whatever you want.
Upon entering a queue, an icon attaches itself to the minimap.
www.worldofwarcraft.com /pvp/battlegrounds/battlegrounds-queue-system.html   (874 words)

  
 Class: Rubygame::Queue
Queue class, because it is going to be changing substantially in the next version.
Queue, but for now you would probably be better off using some other data structure to hold your own events.
P.S. Queue is a singleton, so you must use Queue.instance, not Queue.new.
rubygame.seul.org /rdoc/classes/Rubygame/Queue.html   (394 words)

  
 DP: Internet Judge Game Queues
The game queues are meant to mitigate the problems experienced by people who wish to get into these high-demand games, but whose timezone or newsfeed prevents their knowing about the game formation until after the game is full.
You may sign up for more than one queue, but if you sign up for a given queue more than once, your earlier sign-up will be deleted and you will be put only at the end of the line.
If you have any problems with the queues, or if you need to have yourself removed from a queue for any reason, or if you have a change of address that should be reflected in a queue, contact The Pouch.
www.diplom.org /DP-cgi/setqueue   (807 words)

  
 queue - Definitions from Dictionary.com
The French word queue from which the English word is borrowed is a descendant of Latin cōda, meaning "tail." French queue appeared in 1748 in English, referring to a plait of hair hanging down the back of the neck.
By 1802 wearing a queue was a regulation in the British army, but by the mid-19th century queues had disappeared along with cocked hats.
A typical use of queues in an operating system involves a user command which places something on a queue, e.g.
dictionary.reference.com /browse/queue   (589 words)

  
 5.10 Queue -- A synchronized queue class
is an integer that sets the upperbound limit on the number of items that can be placed in the queue.
Insertion will block once this size has been reached, until queue items are consumed.
is less than or equal to zero, the queue size is infinite.
www.python.org /doc/current/lib/module-Queue.html   (90 words)

  
 GNU Queue - Summary [Savannah]
GQ handles the allocation of resources and distribution of jobs to available nodes and minimizes the need for the user to be aware of the load status of the individual cluster nodes.
In June 2005 a new GNU Queue maintainer (Koni) was appointed.
The original GNU Queue and the sourceforge site for the project has withered on the vine over the past few years.
savannah.gnu.org /projects/gnu-queue   (238 words)

  
 The Queue structure
The Queue structure provides a simple implementation of mutable queues.
The current implementation relies on the applicative queues defined in Fifo, and therefore has similar performance.
folds the elements of the queue from the head to the tail.
www.smlnj.org /doc/smlnj-lib/Manual/queue.html   (172 words)

  
 Queue v0.9 - ticalc.org
Queue is a TI89 / TI92+ clone of both Tetris and Quadra.
The only drawback to Queue is a lack of a two player mode.
If Queue had a two player mode, then ZTetris would not be needed - this game is THAT good.
www.ticalc.org /archives/files/fileinfo/142/14220.html   (443 words)

  
 queue   (Site not responding. Last check: 2007-11-05)
where Q is a queue and v and w are values.
See also deque, stack, priority queue, first come, first served.
Paul E. Black, "queue", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed., U.S. National Institute of Standards and Technology.
www.nist.gov /dads/HTML/queue.html   (178 words)

  
 Thread::Queue - thread-safe queues   (Site not responding. Last check: 2007-11-05)
The queue will grow as needed to accomodate the list.
method removes a scalar from the head of the queue and returns it.
method returns the number of items still in the queue.
www.xav.com /perl/lib/Thread/Queue.html   (276 words)

  
 Queue (Advanced Placement Computer Science Java Subset Specification)
The interface for queues as they will be used on the Advanced Placement Computer Science exam.
Returns true if this queue is empty, otherwise returns false.
Returns the first element of the queue without dequeuing it.
www.cs.duke.edu /csed/ap/subset/doc/ap/Queue.html   (219 words)

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