From ebeab5d351ec5d4f03a56f7bc3cf1e916962b554 Mon Sep 17 00:00:00 2001
From: jiangli <jiangli@fanhaoyue.com>
Date: Tue, 26 Feb 2019 10:49:48 +0800
Subject: [PATCH] a more elegant way

---
 .../apache/dubbo/common/timer/HashedWheelTimer.java  | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/dubbo-common/src/main/java/org/apache/dubbo/common/timer/HashedWheelTimer.java b/dubbo-common/src/main/java/org/apache/dubbo/common/timer/HashedWheelTimer.java
index f786caeb8cc..aa39bbe09cd 100644
--- a/dubbo-common/src/main/java/org/apache/dubbo/common/timer/HashedWheelTimer.java
+++ b/dubbo-common/src/main/java/org/apache/dubbo/common/timer/HashedWheelTimer.java
@@ -290,11 +290,13 @@ private static HashedWheelBucket[] createWheel(int ticksPerWheel) {
     }
 
     private static int normalizeTicksPerWheel(int ticksPerWheel) {
-        int normalizedTicksPerWheel = 1;
-        while (normalizedTicksPerWheel < ticksPerWheel) {
-            normalizedTicksPerWheel <<= 1;
-        }
-        return normalizedTicksPerWheel;
+        int normalizedTicksPerWheel = ticksPerWheel - 1;
+        normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 1;
+        normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 2;
+        normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 4;
+        normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 8;
+        normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 16;
+        return normalizedTicksPerWheel + 1;
     }
 
     /**