[Boost-commit] svn:boost r55342 - sandbox/libs/mapreduce/examples/wordcount

Subject: [Boost-commit] svn:boost r55342 - sandbox/libs/mapreduce/examples/wordcount
From: cdm.henderson_at_[hidden]
Date: 2009-08-01 09:45:16

Author: chenderson
Date: 2009-08-01 09:45:15 EDT (Sat, 01 Aug 2009)
New Revision: 55342
URL: http://svn.boost.org/trac/boost/changeset/55342

Log:
Small optimisation for Combining results at the end of the Map Task
Text files modified: 
   sandbox/libs/mapreduce/examples/wordcount/wordcount.cpp |    10 ++++++++++                              
   1 files changed, 10 insertions(+), 0 deletions(-)

Modified: sandbox/libs/mapreduce/examples/wordcount/wordcount.cpp
==============================================================================
--- sandbox/libs/mapreduce/examples/wordcount/wordcount.cpp	(original)
+++ sandbox/libs/mapreduce/examples/wordcount/wordcount.cpp	2009-08-01 09:45:15 EDT (Sat, 01 Aug 2009)
@@ -91,6 +91,13 @@
 class combiner
 {
   public:
+    template<typename IntermediateStore>
+    static void run(IntermediateStore &intermediate_store)
+    {
+        combiner instance;
+        intermediate_store.combine(instance);
+    }
+
     void start(map_task::intermediate_key_type const &)
     {
         total_ = 0;
@@ -107,6 +114,9 @@
     {
         total_ += value;
     }
+        
+  private:
+    combiner() { }
 
   private:
     unsigned total_;