当连接发生特别异常时处理notMaxActive.signal

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@618 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java

@@ -871,6 +871,8 @@ public abstract class DruidAbstractDataSource implements DruidAbstractDataSource
     protected void handleException(Throwable e) throws SQLException {
         errorCount.incrementAndGet();
     }
+    
+    abstract void decrementActiveCountWithLock();
 
     protected abstract void recycle(PoolableConnection pooledConnection) throws SQLException;