@Test public void shouldSetAndClearAlertStatus() { SequenceBarrier sequenceBarrier = ringBuffer.newBarrier(); assertFalse(sequenceBarrier.isAlerted()); sequenceBarrier.alert(); assertTrue(sequenceBarrier.isAlerted()); sequenceBarrier.clearAlert(); assertFalse(sequenceBarrier.isAlerted()); }
/** * It is ok to have another thread rerun this method after a halt(). * * @throws IllegalStateException if this object instance is already running in a thread */ @Override public void run() { if (!running.compareAndSet(false, true)) { throw new IllegalStateException("Thread is already running"); } sequenceBarrier.clearAlert(); notifyStart(); T event = null; long nextSequence = sequence.get() + 1L; while (true) { try { final long availableSequence = sequenceBarrier.waitFor(nextSequence); while (nextSequence <= availableSequence) { event = dataProvider.get(nextSequence); eventHandler.onEvent(event, nextSequence, nextSequence == availableSequence); nextSequence++; } sequence.set(availableSequence); } catch (final TimeoutException e) { notifyTimeout(sequence.get()); } catch (final AlertException ex) { if (!running.get()) { break; } } catch (final Throwable ex) { exceptionHandler.handleEventException(ex, nextSequence, event); sequence.set(nextSequence); nextSequence++; } } notifyShutdown(); running.set(false); }