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Multithreading | Thread was being aborted


By : Nathan Gelman
Date : August 01 2020, 04:00 AM
I wish did fix the issue. In C#, threads can not be stopped at all without side effects. Imagine the thread has disposable items ready and - just stops. As a workaround, when a thread gets aborted (which you an - you should not, but you can call on the Thread object) a ThreadAbortException is generated and executed. This allows exception handling to kick in and close file handles etc.
Ah, finally found it - this is the blog post explaining why YOU should never call Thread.Abort (i.e. it should not be called by application code):
code :


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Java Multithreading: Does the thread on which an objects method is executed depend on the thread on the thread in which


By : Bogdan Skripka
Date : March 29 2020, 07:55 AM
Any of those help
You create an ObjectOfClassA on Thread1 then you create and ObjectOfClassB on Thread2, the ObjectOfClassB contains a reference to the ObjectOfClassA. When the ObjectOfClassB runs a method of ObjectOfClassA on which thread will the method be executed?

Multithreading doesn't work as expected, the 2nd thread is waiting the 1st thread to finish before starting


By : MrClintMiller
Date : March 29 2020, 07:55 AM
To fix the issue you can do You can't. The actual threads depend on the OS scheduler.
What you can do is to wait for the states of both to be RUNNABLE. After that you could use a synchronization flag to let them run wild. Atomic variables or volatile should do the trick

Scala - multithreading, finish main thread when any child thread finishes


By : Stkaccd
Date : March 29 2020, 07:55 AM
wish helps you I am building a method that takes x-sized sequence of methods and returns the result of the first method to finish. , Not the pretiest answer, but seemed to work:
code :
def invokeAny(work: Seq[() => Int]): Int = {
    @volatile var result = 0 // set to return value of any work function
    val main = Thread.currentThread()

    var threads: Seq[Thread] = Seq()

    //Interrupts all threads after one is interrupted
    def interruptAll = {
      main.interrupt()
      for(thread <- threads) {
        thread.interrupt()

      }
    }

    threads = work.map(work => new Thread( 
        new Runnable { 
          def run {
            result = try {
              work() } catch {
                case e:InterruptedException => return
            }
            interruptAll;  

            }
          }))

    threads.foreach(_.start())
    for(thread <- threads) {
      try {
        thread.join()
      } catch {
        // We've been interrupted: finish
        case e: InterruptedException =>  return result
    }
    }
    return result
  }

RuntimeError: There is no current event loop in thread 'Thread-1' , multithreading and asyncio error


By : Avichal Chadha
Date : March 29 2020, 07:55 AM
I hope this helps . New thread doesn't have an event loop so you have to pass and set it explicitly:
code :
def worker(ws, loop):
    asyncio.set_event_loop(loop)
    loop.run_until_complete(ws.start())

if __name__ == '__main__':
    ws = Server()
    loop = asyncio.new_event_loop()
    p = threading.Thread(target=worker, args=(ws, loop,))
    p.start()

Thread doesn't work with an error: Enable multithreading to use std::thread: Operation not permitted


By : John Gokul
Date : March 29 2020, 07:55 AM
it fixes the issue It seems that you are trying to use C++11 threads. If it is true, then
correct #include and #include , i.e. do not use " in these lines and add # in front of them. compile with g++ -std=c++11 q.cpp -lpthread (dependency order matters for newer g++)
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