Ignore InterruptedException Started from Another Thread

This question already has an answer here: Handling InterruptedException in Java 7 answers I have a class class Foo { static void bar() throws InterruptedException { // do something Thread.sleep(1000); } static void baz(int a, int b, int c) throws Int

Is this the right way to use synchronized in Java?

The for loop shown here is run within a thread. Inside the sychronized block, a thread writes to some file. There are several different files, so the writers are kept in an array. What I want to make sure here is that no two different threads are wri

How to freeze one thread and notify another?

I need to pause the current thread in Rust and notify it from another thread. In Java I would write: synchronized(myThread) { myThread.wait(); } and from the second thread (to resume main thread): synchronized(myThread){ myThread.notify(); } Is is po

multiprocessing card python speed problem with the list

I have two similar piece of code, speed is very different: Code 1: Execution in 16seconds def mc05(): num_procs = 4 iters = 1000000000 its = iters / num_procs pool = mp.Pool(processes=num_procs) result = pool.map(mpf.integrate3, [its] * num_procs) pr

Process the multithreaded output sequentially

I've got some code that generates thousands of invoices as PDFs and then writes them to a zip file and then pumps that out over a HttpStreamingResponse (django). The PDF generation is really slow and currently single-threaded. I can generate the sour

Swift - multithread error using enumerateChildNodesWithName

I like to use multithreading in my spritekit game. I use enumerateChildNodesWithName and then I check if this object has collided with the player. I want to execute this part on another thread. Here is my code: let updateQueue: dispatch_queue_t = dis

Multi-threading queue vs. JMS for asynchronous logging

Requirement: Log events like Page Views and form Submits. Each page has ~1 second SLA. The application can have 100's of concurrent users at a time. Log events are stored into the Database. Solution: My initial thought was to use an async logging app

Parallel.Invoke (), TransactionScope (), and SqlBulkCopy

I have multiple methods inside a Parallel.Invoke() that need to run inside of a transaction. These methods all invoke instances of SqlBulkCopy The use-case is "all-or-none", so if one method fails nothing gets committed. I am getting a Transacti

The sticky GUI when we use dual stream

I've the following code, that from the first Stream is reading from a file, and doing some interpretations to the content and write them to the second file, I'm facing a problem that when I've a big file the GUI in WPF is sticking, I tried to put the

Why does this produce a correct output?

I was just working on a multithreading/concurrency tutorial, and the following code (I think) is supposed to not work correctly, because 5 different threads operate on the same object. But it prints out exactly 500 every time. How does that work? I'm

Deadlock Multithreading in Java

Please, can somebody explain me why this code is a deadlock. It seems that it should work properly. Please explain it in details. Thanks. public class H extends Thread { String info = ""; public H (String info) { this.info = info; } public synch

Merge NSManagedObjectContext from main thread to another thread

I've used Core Data in various projects so I'm aware of how to deal with context merging from a thread to the main app. My problem is that in a new application I'm working on I have a main context and a thread context that lives for the whole applica

Several background threads

I have one c# application that uses BackGroundWorker to do a group of tasks: private void buttonStartCheckOut_Click(object sender, EventArgs e) { BackgroundWorker checkOuter = new BackgroundWorker(); checkOuter.DoWork += new DoWorkEventHandler(checkO

What is a non-blocking semaphore?

Seems like a contradiction because a semaphore should block to function. Internet searches do not show up anything useful towards defining what this means.If a semaphore has the value 0, a down operation on it will block until someone releases a reso

Java Messenger (multithreading and swing)

hey im having problems with java messenger application. i've made a simple gui in netbeans and a server and client class. when i create a new instance of server in gui i start a new thread and start listening in it. the problem occurs when server get

Lock protector for synchronized acquisition / release

I have a shared tempfile resource that is divided into chunks of 4K (or some such value). Each 4K in the file is represented by an index starting from zero. For this shared resource, I track the 4K chunk indices in use and always return the lowest in

multithreading for java graphics

I have a java application that streams raw data and draws real time plots accordingly. this is handled by calling methods from a class i wrote that uses the Graphics object. i implemented algorithms in an overridden paintComponent method to generate

Delay in parallel computing

I'm using parallel.for to launch in many threads a external program. But despite the fact that these are separate threads I need implement sth like delay. E.g. 2 threads want to launch this external program at the same moment - then one of them shoul

Python Threads in C

I'am writing a multi-threaded program in C. Before creating the threads, a global python environment is initialized by calling Py_Initialize(). Then, in every created thread, the global python environment is shared, and each thread calls a python met

C semaphores and a "barrier" & rdquo; between threads

I'm trying to solve a problem our Operating Systems professor showed us from a previous exam to prepare for the next one. The problem is to have two threads that execute concurrently and may complete in a different amount of time. After a particular

Unhandled ThreadAbortException occurring - sometimes

I have a dialog that has to process large quantaties of data (the procedure is quite time consuming - first the ODBC fill takes its time, then the data processing kicks in) and the result is that the Form becomes unresponsive. This is not a problem r

'using' statement vs 'finally tries'

I've got a bunch of properties which I am going to use read/write locks on. I can implement them either with a try finally or a using clause. In the try finally I would acquire the lock before the try, and release in the finally. In the using clause,