CODEWITHSUNDEEP
javaandroidmultithreading
JE42
JE42

Reputation: 5149

Using Thread interrupt to wake up a thread?

Are there any drawbacks to regularly wake up a thread on Android using Thread.interrupt. The thread loop looks similar to this:

public void run()
{
   while(true)
   {
       try
       {
          wait();
       }
       catch(InterruptedException e)
       {
          performWork();
       }
   }
}

Upvotes: 0

Views: 740

Answers (1)

ddmps
ddmps

Reputation: 4380

Yes. It's a horrible way to code. interrupt() will for instance throw an Exception if the Thread is blocked in I/O and is not made to be used like this.

Instead, use notify/wait which is made for this. Something like this in run():

synchronized (this) {
   while (conditionForWaiting) {
      try {
         wait();
      } catch (InterruptedException ex) {}

}
performWork();

And to notify the thread that conditionForWaiting is changed:

synchronized (threadInstance) {
   threadInstance.notify();
}

Upvotes: 2

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