A queue is an ordered, first-in-first-out data structure. Typical implementations of queues support pushing elements to the back and popping them off the front position.
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3answers
409 views
Optimizing a thread safe Java NIO / Serialization / FIFO Queue
I've written a thread safe, persistent FIFO for Serializable items. The reason for reinventing the wheel is that we simply can't afford any third party dependencies in this project and want to keep ...
1
vote
1answer
158 views
Radix Sorting with using queue [closed]
I have been trying to finish a book, Problem Solving and Program Design in C. In that book, there is a chapter, Dynamic Data Structures. I have understood main parts of that chapter. But, I couldn't ...
6
votes
1answer
258 views
A queue that switches from FIFO mode to priority mode
I implemented a queue capable of operating both in the FIFO mode and in the priority mode: when the priority mode is enabled, the elements are taken in order of decreasing priority; when the priority ...
4
votes
2answers
226 views
Binary tree max sum level - better design?
I have written some code for finding a level in a binary tree, having a maximum number of elements. I have a few questions:
Is it a good design? I have used 2 queues but the total sum of elements ...
2
votes
1answer
75 views
Message queues in Common Lisp
General advice for a change. This is an implementation of message queues that I'm going to use for some work on an actors model library.
(defclass message-queue ()
((messages :accessor messages ...
2
votes
2answers
377 views
Robust logging solution to file on disk from multiple threads on serverside code
I have implemented a socket listener that runs on my Linux Ubuntu server accepting connections and then starting up a new thread to listen on those connections (classic socket listener approach). ...
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vote
1answer
771 views
Simple generic multithreaded queue
This is a simple thread safe queue that is used in a producer-consumer model.
public class ThreadedQueue<TType>
{
private Queue<TType> _queue;
private object _queueLock;
...
4
votes
2answers
1k views
Did I need to use lock to ensure that Queue.Dequeue is Thread Safe in this case on .NET 2.0?
Is this ok? I am using C# and .NET 2.0
I have this Queue declared in my class :
static private Queue<SignerDocument> QUEUE = new Queue<SignerDocument>();
I fill this Queue with some ...
5
votes
2answers
446 views
Custom JavaScript function queue
For fun, I made a function queue in JavaScript. I named it tinyq. You can add functions to it, and each function is passed the next function in the queue. You can also pass parameters to the ...
3
votes
2answers
1k views
Queue Implementation
First time I'm using stackexchange. I'm in 8th standard. I tried to implement Queue in Java. I wrote something like this> Right now I'm not able to test it because I don't have JVM in my machine. So I ...
4
votes
3answers
761 views
Java blocking queue
public class BQueue<T> {
private Queue<T> q = new LinkedList<T>();
private int limit;
public BQueue(int limit) {
this.limit = limit;
}
public ...
2
votes
1answer
204 views
Trying to improve my jQuery animation queue
So I built a little baseball "scouting report" graphic that shows stats for players. As you page through the players, their images slide in and out of the graphic. I worked out a way to do this using ...
5
votes
1answer
371 views
Double-Ended Queue - Have I over-engineered it again?
I'm working on an implementation of the Double-Ended Queue as a Doubly-Linked List (for personal enrichment), and I was wondering if anyone minded taking a look at my Constructor/Destructor and Empty ...
2
votes
1answer
817 views
A simple thread-safe queue in python
I'm trying to implement a kind of message queue. Tasks will come in at unknown random times, and must be executed FIFO. I can do multiple tasks in one hit, but the setup and tear down unavoidably ...
0
votes
1answer
231 views
Queue Dequeue/TryeDequeue PulseAll does not occur,
This is the very first message on CodeReview. To simplify my own process to get helped, i was sum all of my problem onto this GIST; https://gist.github.com/1057263
I hope this is ok. If anyone wants ...
2
votes
5answers
672 views
Bounded blocking queue
Can someone please review this code for me. I have not implemented all the methods for simplicity.
Original code:
/**
* Implements a blocking bounded queue from a given non-blocking unbounded queue ...
1
vote
1answer
681 views
What value the rear and front counter of an Array implementation of Queue start with? -1 or 0 or 1?
Is there anything wrong with this implementation of Queue with array?
I have started front = rear = -1.
Some references tend to start front = 0 like this:enter link description here
I think if ...
4
votes
3answers
645 views
fix ugly initialisation in while loop over queue
I have a loop structure, that I really don't like. It's the initialisation I find appalingly ugly. Is there a nicer way to do the following?
Queue<Integer> queue = getMyQueue();
Integer element ...
7
votes
4answers
1k views
Circular Bounded Que using C#
I have implemented a circular bounded que using arrays as the base data structure. I'd appreciate if someone can review it for me.
class BoundedQueue<T> {
T[] que;
int head; ...
10
votes
7answers
7k views
A custom thread-pool/queue class.
I wanted a class which executes any number of tasks but only a certain amount at the same time (e.g. to download various internet content and keep the overall download speed at a good level). The ...
5
votes
1answer
875 views
Refactoring a multi-threaded producer-consumer model
This is an architecture question for a multi-threaded program which is going to be moved from C# .NET 2 to .NET 4. The program currently has multiple processing threads, and one database I/O thread. ...
