From 1250163f394bd54e54c2d7a5e6fde93b6250f532 Mon Sep 17 00:00:00 2001
From: Gary Tully <gtully@apache.org>
Date: Wed, 19 Oct 2011 22:26:07 +0000
Subject: [PATCH] https://issues.apache.org/jira/browse/AMQ-3481 - check for
 tryLock success before unlock

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1186539 13f79535-47bb-0310-9956-ffa450edef68
---
 .../apache/activemq/transport/AbstractInactivityMonitor.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/activemq-core/src/main/java/org/apache/activemq/transport/AbstractInactivityMonitor.java b/activemq-core/src/main/java/org/apache/activemq/transport/AbstractInactivityMonitor.java
index f394b3ed1f..6911f96489 100644
--- a/activemq-core/src/main/java/org/apache/activemq/transport/AbstractInactivityMonitor.java
+++ b/activemq-core/src/main/java/org/apache/activemq/transport/AbstractInactivityMonitor.java
@@ -153,7 +153,9 @@ public abstract class AbstractInactivityMonitor extends TransportFilter {
                         } catch (IOException e) {
                             onException(e);
                         } finally {
-                            sendLock.writeLock().unlock();
+                             if (sendLock.writeLock().isHeldByCurrentThread()) {
+                                sendLock.writeLock().unlock();
+                             }
                         }
                     }
                 };