[Boost-commit] svn:boost r51599 - sandbox/reference_closure

Subject: [Boost-commit] svn:boost r51599 - sandbox/reference_closure
From: dave_at_[hidden]
Date: 2009-03-04 00:23:41

Author: dave
Date: 2009-03-04 00:23:38 EST (Wed, 04 Mar 2009)
New Revision: 51599
URL: http://svn.boost.org/trac/boost/changeset/51599

Log:
Increase number of iterations again to ensure stability

Add ability to disable work for measurement purposes

Time doug's tr1::function copy ctor optimization that tests a bit and
avoids indirect call

Text files modified: 
   sandbox/reference_closure/main.cc             |     2 +-                                      
   sandbox/reference_closure/timings.txt         |    27 +++++++++++++++++++++++++++             
   sandbox/reference_closure/trivial_closure.h   |     2 ++                                      
   sandbox/reference_closure/trivial_initiator.h |     6 +++++-                                  
   4 files changed, 35 insertions(+), 2 deletions(-)

Modified: sandbox/reference_closure/main.cc
==============================================================================
--- sandbox/reference_closure/main.cc	(original)
+++ sandbox/reference_closure/main.cc	2009-03-04 00:23:38 EST (Wed, 04 Mar 2009)
@@ -1,7 +1,7 @@
 #include "trivial_initiator.h"
 
 int main() {
-    for ( int i = 0; i < 1000*1000*100; i++ )
+    for ( int i = 0; i < 1000*1000*1000; i++ )
        initiator();
     return 0;
 }

Modified: sandbox/reference_closure/timings.txt
==============================================================================
--- sandbox/reference_closure/timings.txt	(original)
+++ sandbox/reference_closure/timings.txt	2009-03-04 00:23:38 EST (Wed, 04 Mar 2009)
@@ -68,4 +68,31 @@
 
 t(std::function<>) / t(reference_closure): 3.2
 
+=== Multiply Iterations by 10 Again ===
+
+execute refclosure
+real	0m16.620s
+user	0m16.489s
+sys	0m0.053s
+
+execute stdfunction
+real	0m51.779s
+user	0m51.640s
+sys	0m0.059s
+
+t(std::function<>) / t(reference_closure): 3.1
+
+=== Eliminate Indirect Call in copy c'tor of std::function<...> ===
+
+execute refclosure
+real	0m16.174s
+user	0m16.034s
+sys	0m0.044s
+
+execute stdfunction
+real	0m33.195s
+user	0m33.047s
+sys	0m0.052s
+
+t(std::function<>) / t(reference_closure): 2.1
 

Modified: sandbox/reference_closure/trivial_closure.h
==============================================================================
--- sandbox/reference_closure/trivial_closure.h	(original)
+++ sandbox/reference_closure/trivial_closure.h	2009-03-04 00:23:38 EST (Wed, 04 Mar 2009)
@@ -5,7 +5,9 @@
 
 inline void work( frame* f )
 {
+# if !DISABLE_WORK
     f->a += f->b * f->c;
+# endif 
 }
 
 #if REFERENCE_CLOSURE

Modified: sandbox/reference_closure/trivial_initiator.h
==============================================================================
--- sandbox/reference_closure/trivial_initiator.h	(original)
+++ sandbox/reference_closure/trivial_initiator.h	2009-03-04 00:23:38 EST (Wed, 04 Mar 2009)
@@ -2,7 +2,11 @@
 #include "parallel_lib.h"
 
 void initiator() {
-    frame mine = { 3, 4, 5 };
+    frame mine
+#if !DISABLE_WORK
+        = { 3, 4, 5 }
+#endif 
+    ;
 
 #if REFERENCE_CLOSURE