Assume some of the usual programming languages (C/C++, java, ...):not nice because uses a loop for ever and a break that could became "lost" in the middle of some code.not nice because assignment to "foo" is duplicated. The do/while statement creates a loop that executes a block of code once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.

Vous devez assurez-vous d'inclure certaines opération de blocage, c'est à dire, certains appel de fonction de l'endroit où votre fil d'attente pour quelqu'un d'autre (un autre fil, un autre programme, le système d'exploitation) à faire quelque chose.

@SLaks: assume the initialization of "foo" needs something more than one line (by example, init a Java PrinterWriter, BufferedStram, is usually done using more than one "new" statement).

Chaque thread consommateur est en boucle, la vérification d'un message s'affiche dans la file d'attente et de la traiter.Le Producteur est en train de mettre des messages à l'intérieur des Consommateurs files d'attente de messages à un rythme rapide (plusieurs millions de messages par seconde). Summary: This tutorial shares examples of the Java ternary operator syntax.. I have one thread that's producing messages one by one and putting them in the correct consumer's queue. Same in this case:It seems strange something so common has no good implementation. löscht man …

I'm looking for a better alternative to following code. Use Thread.onSpinWait, Thread.yield, and/or blocking synchronization to better cope with the fact that "eventually" can be a long time, especially when there are more threads than cores on a system.

Consumers should process these messages as fast as possible!Instead of looping forever and breaking or returning, you might choose to check the interrupted status.If your threads are tasks managed by an ExecutorService, you can have them all end gracefully simply by calling shutdownNow()....perhaps?

zb ein lockfile, das man vorher erstellt, nachher löscht und bei jedem durchlauf einmal auf existenz prüft.

Java While Loop. By using our site, you acknowledge that you have read and understand our Java While loop start by verifying the condition, if it is true, the code within the while loop will run. If the expression evaluates to true, the while statement executes the statement(s) in the while block. Le moteur d'exécution peut prendre des mesures pour améliorer la performance de l'invocation de la spin-boucle d'attente des constructions. peek == null) {Thread. The do/while statement is used when you want to run a loop at least one time, no matter what.

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Stack Overflow works best with JavaScript enabled Despite the numerous similarities between the two languages, there are a number of differences between them. If the condition is something more complex, or is a call to another function, it could be a problem. So make sure to use Depends on the definition of "bad".

Examples might be simplified to improve reading and basic understanding. as the condition is true.The do/while statement is used when you want to run a loop The numbers in the table specify the first browser version that fully supports the statement.If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: I have ~10,000 threads, each consuming messages from their private queues.

While loop to write an infinite loop : ‘while’ loop first checks a condition and then runs the code inside its block. The while statement continues testing the expression and executing its block until the expression evaluates to false.Using the while statement to print the values from 1 through 10 can be accomplished … Featured on Meta This is typically I usually go with a class attribute boolean called 'done', then the threads' run methods look likeYou can then set done=true to kill the loop.

In terms of speed, C++ is relatively faster than Java. A some sort of exit flag is often used to control thread running.The problem is what happens when your thread has nothing to do? As long as getSmthUgly isn't too ugly, this might be the best solution.ok, it is probably the best, another problem happens when init to "foo" needs more than one statement.Nice to known the first part of a "for" can be used only to declare a local variable, without init. The Java while Loop. Each consumer thread loops indefinitely, checking for a message to appear in their queue and process it.The Producer is putting messages inside Consumer message queues at a rapid pace (several million messages per second).