支持testWhileIdle & idleCheck

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@389 b9813039-fb51-4c41-a8b9-e21c2acb5095

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

@@ -143,6 +143,15 @@ public abstract class DruidAbstractDataSource implements DruidAbstractDataSource
     protected ValidConnectionChecker validConnectionChecker                    = null;
 
     protected final AtomicLong       errorCount                                = new AtomicLong();
+    protected final AtomicLong       dupCloseCount                             = new AtomicLong();
+
+    public long getDupCloseCount() {
+        return dupCloseCount.get();
+    }
+
+    public void incrementDupCloseCount() {
+        dupCloseCount.incrementAndGet();
+    }
 
     public ValidConnectionChecker getValidConnectionChecker() {
         return validConnectionChecker;