添加等待监控

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@653 b9813039-fb51-4c41-a8b9-e21c2acb5095

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

@@ -855,6 +855,14 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
             destroyCount++;
         }
     }
+    
+    public int getWaitThreadCount() {
+        return lock.getWaitQueueLength(notEmpty);
+    }
+    
+    public int getLockQueueLength() {
+        return lock.getQueueLength();
+    }
 
     public String toString() {
         StringBuilder buf = new StringBuilder();

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

@@ -25,4 +25,8 @@ public interface DruidDataSourceMBean extends DruidAbstractDataSourceMBean {
     void shrink();
     
     String toString();
+    
+    int getWaitThreadCount();
+    
+    int getLockQueueLength();
 }