avoid hanging in case of shutdown errors (SPR-7511)

org.springframework.jms/src/main/java/org/springframework/jms/listener/DefaultMessageListenerContainer.java

@@ -977,36 +977,38 @@ public class DefaultMessageListenerContainer extends AbstractPollingMessageListe
 					handleListenerSetupFailure(ex, true);
 				}
 			}
-			synchronized (lifecycleMonitor) {
-				decreaseActiveInvokerCount();
-				lifecycleMonitor.notifyAll();
-			}
-			if (!messageReceived) {
-				this.idleTaskExecutionCount++;
-			}
-			else {
-				this.idleTaskExecutionCount = 0;
-			}
-			synchronized (lifecycleMonitor) {
-				if (!shouldRescheduleInvoker(this.idleTaskExecutionCount) || !rescheduleTaskIfNecessary(this)) {
-					// We're shutting down completely.
-					scheduledInvokers.remove(this);
-					if (logger.isDebugEnabled()) {
-						logger.debug("Lowered scheduled invoker count: " + scheduledInvokers.size());
-					}
+			finally {
+				synchronized (lifecycleMonitor) {
+					decreaseActiveInvokerCount();
 					lifecycleMonitor.notifyAll();
-					clearResources();
 				}
-				else if (isRunning()) {
-					int nonPausedConsumers = getScheduledConsumerCount() - getPausedTaskCount();
-					if (nonPausedConsumers < 1) {
-						logger.error("All scheduled consumers have been paused, probably due to tasks having been rejected. " +
-								"Check your thread pool configuration! Manual recovery necessary through a start() call.");
+				if (!messageReceived) {
+					this.idleTaskExecutionCount++;
+				}
+				else {
+					this.idleTaskExecutionCount = 0;
+				}
+				synchronized (lifecycleMonitor) {
+					if (!shouldRescheduleInvoker(this.idleTaskExecutionCount) || !rescheduleTaskIfNecessary(this)) {
+						// We're shutting down completely.
+						scheduledInvokers.remove(this);
+						if (logger.isDebugEnabled()) {
+							logger.debug("Lowered scheduled invoker count: " + scheduledInvokers.size());
+						}
+						lifecycleMonitor.notifyAll();
+						clearResources();
 					}
-					else if (nonPausedConsumers < getConcurrentConsumers()) {
-						logger.warn("Number of scheduled consumers has dropped below concurrentConsumers limit, probably " +
-								"due to tasks having been rejected. Check your thread pool configuration! Automatic recovery " +
-								"to be triggered by remaining consumers.");
+					else if (isRunning()) {
+						int nonPausedConsumers = getScheduledConsumerCount() - getPausedTaskCount();
+						if (nonPausedConsumers < 1) {
+							logger.error("All scheduled consumers have been paused, probably due to tasks having been rejected. " +
+									"Check your thread pool configuration! Manual recovery necessary through a start() call.");
+						}
+						else if (nonPausedConsumers < getConcurrentConsumers()) {
+							logger.warn("Number of scheduled consumers has dropped below concurrentConsumers limit, probably " +
+									"due to tasks having been rejected. Check your thread pool configuration! Automatic recovery " +
+									"to be triggered by remaining consumers.");
+						}
 					}
 				}
 			}