Proper shutdown functionality for Thrift servers

Reviewed By: karl


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665038 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/server/TThreadPoolServer.h b/lib/cpp/src/server/TThreadPoolServer.h
index d227930..f6809fc 100644
--- a/lib/cpp/src/server/TThreadPoolServer.h
+++ b/lib/cpp/src/server/TThreadPoolServer.h
@@ -40,10 +40,14 @@
   virtual ~TThreadPoolServer();
 
   virtual void serve();
+  
+  virtual void stop() { stop_ = true; }
 
  protected:
 
   shared_ptr<ThreadManager> threadManager_;
+
+  volatile bool stop_;
   
 };