[Boost-commit] svn:boost r52291 - trunk/boost/asio/detail

Subject: [Boost-commit] svn:boost r52291 - trunk/boost/asio/detail
From: chris_at_[hidden]
Date: 2009-04-09 08:04:40

Author: chris_kohlhoff
Date: 2009-04-09 08:04:39 EDT (Thu, 09 Apr 2009)
New Revision: 52291
URL: http://svn.boost.org/trac/boost/changeset/52291

Log:
As a performance optimisation, add an explicit check for an empty vector of
timer queues.

Text files modified: 
   trunk/boost/asio/detail/win_iocp_io_service.hpp |    13 ++++++++-----                           
   1 files changed, 8 insertions(+), 5 deletions(-)

Modified: trunk/boost/asio/detail/win_iocp_io_service.hpp
==============================================================================
--- trunk/boost/asio/detail/win_iocp_io_service.hpp	(original)
+++ trunk/boost/asio/detail/win_iocp_io_service.hpp	2009-04-09 08:04:39 EDT (Thu, 09 Apr 2009)
@@ -436,12 +436,15 @@
         try
         {
           boost::asio::detail::mutex::scoped_lock lock(timer_mutex_);
-          timer_queues_copy_ = timer_queues_;
-          for (std::size_t i = 0; i < timer_queues_copy_.size(); ++i)
+          if (!timer_queues_.empty())
           {
-            timer_queues_copy_[i]->dispatch_timers();
-            timer_queues_copy_[i]->dispatch_cancellations();
-            timer_queues_copy_[i]->complete_timers();
+            timer_queues_copy_ = timer_queues_;
+            for (std::size_t i = 0; i < timer_queues_copy_.size(); ++i)
+            {
+              timer_queues_copy_[i]->dispatch_timers();
+              timer_queues_copy_[i]->dispatch_cancellations();
+              timer_queues_copy_[i]->complete_timers();
+            }
           }
         }
         catch (...)