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POKill the Thread in android
 

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    <p>I'm using 3rd party library for doing some work in my application. Unfortunately, some bugs were found in it and they cause very sad result: my app is hanging as worker thread probably infinite looping. I've read some questions about killing the thread in android VM but they are didn't help me because of:</p> <ol> <li>stop() method is deprecated and not supported bu Andriod VM</li> <li>interrupt() method doesn't do anything, i mean thread is still alive</li> </ol> <p>The worst thing is that from some moment of time this worker thread starts to use a lot of memory causing GC to run too often which also is not good for app.</p> <p>I've found some conditions when bug in library is occurred but i there are may be other bugs which i also want to avoid in my app.</p> <p>Here is ode snippet that shows the problem:</p> <pre><code> final MutableObject&lt;Object&gt; calculationResult = new MutableObject&lt;Object&gt;(null); final MutableObject&lt;EvalError&gt; exception = new MutableObject&lt;EvalError&gt;(null); final MutableObject&lt;Thread&gt; calculationThread = new MutableObject&lt;Thread&gt;(null); final CountDownLatch latch = new CountDownLatch(1); new Thread(new Runnable() { @Override public void run() { final Thread thread = Thread.currentThread(); try { Log.d(CalculatorEngine.class.getName(), "Calculation thread started work: " + thread.getName()); calculationThread.setObject(thread); calculationResult.setObject(interpreter.eval(jsclExpression)); } catch (EvalError evalError) { exception.setObject(evalError); } finally { Log.d(CalculatorEngine.class.getName(), "Calculation thread ended work: " + thread.getName()); calculationThread.setObject(null); latch.countDown(); } } }).start(); try { Log.d(CalculatorEngine.class.getName(), "Main thread is waiting: " + Thread.currentThread().getName()); latch.await(4, TimeUnit.SECONDS); Log.d(CalculatorEngine.class.getName(), "Main thread got up: " + Thread.currentThread().getName()); final EvalError evalErrorLocal = exception.getObject(); final Object calculationResultLocal = calculationResult.getObject(); final Thread calculationThreadLocal = calculationThread.getObject(); if (calculationThreadLocal != null) { // todo serso: interrupt doesn't stop the thread but it MUST be killed calculationThreadLocal.interrupt(); resetInterpreter(); } if ( evalErrorLocal != null ) { throw evalErrorLocal; } if ( calculationResultLocal == null ) { tooLongExecutionCache.add(jsclExpression); throw new ParseException("Too long calculation for: " + jsclExpression); } } catch (InterruptedException e) { throw new ParseException(e); } </code></pre>
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    1. COYou need to read these threads - http://stackoverflow.com/questions/3194545/how-to-stop-a-java-thread-gracefully and http://stackoverflow.com/questions/255276/how-to-stop-long-executing-threads-gracefully
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    2. COThe links are irrelevant. The third party library is looping because of a bug and se.solovyev is asking for a watchdog killswitch.
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    3. COKarlP is right, but thanks to AVD i at least can reduce the effects of the bug (i mean i can set low priority for such threads)
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