// excerpts from http://code.google.com/p/muduo/
 //
 // Use of this source code is governed by a BSD-style license
 // that can be found in the License file.
 //
 // Author: Shuo Chen (chenshuo at chenshuo dot com)
 
 #include "Timer.h"
 
 using namespace muduo;
 
+AtomicInt64 Timer::s_numCreated_;
+
 void Timer::restart(Timestamp now)
 {
   if (repeat_)
   {
     expiration_ = addTime(now, interval_);
   }
   else
   {
     expiration_ = Timestamp::invalid();
   }
 }