12/9/2023 0 Comments Queue vs priority queue![]() ![]() I know that this is an old topic but I saw that you didnt consider a concurrent implementation of a priority queue. Like the example of a PriorityQueue, the calling code could be agnostic to this, though as you may want to use some sort of wait timeout that's not always case. With a BlockingQueue you're typically in the realm of worker threads picking up queued work and when there's no work to do, those threads can be blocked until work becomes available. That said typically the code processing the jobs should be agnostic to the order. Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. I obviously cant use the same syntax that I used for the std. An Image/Link below is provided (as is) to download presentation. However, I cant find any examples that explain how best to pass the function. I know that the boost::heap::priorityqueue has a constructor that will set a custom comparator. ![]() So, the difference in their sizes can be less than or equal to one. For example on a queue of jobs, you might want to be able to give those jobs priority. This is a feature that Id really like to have, so I decided to switch to a boost::heap::priorityqueue. Meaning one priority queue can have at most one element more than the other. There's numerous reasons why you might need a PriorityQueue that boil down to message ordering. If your code requires knowledge of both these concepts a re-think may be needed. Typically you could should depend on the abstract type, either PriorityQueue or BlockingQueue. ![]() The priority part in the queues you are using simply means the items are read from the queue in a specific order (either natural if they implement Comparable or according to a Comparator). ("Added an element to the queue") Ī normal Queue will return null when accessed if it is empty, while a BlockingQueue blocks if the queue is empty until a value is available. (priorityQueue.remove() +" is removed from priorityQueue object") Public class PriorityBlockingQueueExample Which one should I choose over another among these programs and why? Generally the question is why should I choose to use PriorityBlockingQueue over PriorityQueue. ![]()
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