From ac7f21ffeb6ea1394f8eb7d183addf6ead81d857 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Tue, 31 Jul 2012 12:32:47 +0800
Subject: [PATCH] add timeout exception message

---
 src/main/java/com/alibaba/druid/pool/DruidDataSource.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
index 7a898bf189..2f7d267789 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidDataSource.java
@@ -806,7 +806,8 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
     }
 
     ConnectionHolder pollLast(long timeout, TimeUnit unit) throws InterruptedException, SQLException {
-        long estimate = unit.toNanos(timeout);
+        final long nanos = unit.toNanos(timeout);
+        long estimate = nanos;
 
         for (int i = 0;; ++i) {
             if (poolingCount == 0) {
@@ -849,7 +850,7 @@ public class DruidDataSource extends DruidAbstractDataSource implements DruidDat
                     if (createError != null) {
                         throw new GetConnectionTimeoutException(createError);
                     } else {
-                        throw new GetConnectionTimeoutException("loopWaitCount " + i);
+                        throw new GetConnectionTimeoutException("loopWaitCount " + i + ", wait millis " + (nanos - estimate)/(1000 * 1000));
                     }
                 }
             }