Subject: [Boost-commit] svn:boost r51594 - sandbox/reference_closure
From: dave_at_[hidden]
Date: 2009-03-03 21:54:00
Author: dave
Date: 2009-03-03 21:54:00 EST (Tue, 03 Mar 2009)
New Revision: 51594
URL: http://svn.boost.org/trac/boost/changeset/51594
Log:
Lambdas would be known to be trivially copiable
Updated timing record to include speed ratios
Text files modified:
sandbox/reference_closure/timings.txt | 18 ++++++++++++++++++
sandbox/reference_closure/trivial_closure.h | 14 ++++++++++++++
2 files changed, 32 insertions(+), 0 deletions(-)
Modified: sandbox/reference_closure/timings.txt
==============================================================================
--- sandbox/reference_closure/timings.txt (original)
+++ sandbox/reference_closure/timings.txt 2009-03-03 21:54:00 EST (Tue, 03 Mar 2009)
@@ -10,6 +10,8 @@
user 0m26.292s
sys 0m0.056s
+t(std::function<>) / t(reference_closure): 22.7
+
=== Removed unrealistic indirection from lambda case ===
execute trivial_nested
@@ -22,3 +24,19 @@
user 0m27.443s
sys 0m0.080s
+t(std::function<>) / t(reference_closure): 23.5
+
+=== Lambdas would be known to be trivially copiable ===
+
+execute trivial_nested
+real 0m1.175s
+user 0m1.166s
+sys 0m0.004s
+
+execute trivial_function
+real 0m4.871s
+user 0m4.836s
+sys 0m0.013s
+
+t(std::function<>) / t(reference_closure): 4.1
+
Modified: sandbox/reference_closure/trivial_closure.h
==============================================================================
--- sandbox/reference_closure/trivial_closure.h (original)
+++ sandbox/reference_closure/trivial_closure.h 2009-03-03 21:54:00 EST (Tue, 03 Mar 2009)
@@ -22,4 +22,18 @@
void operator()() { work( scope ); }
};
+#include <tr1/functional>
+namespace std
+{
+ namespace tr1
+ {
+
+ template <>
+ struct __is_location_invariant<lambda>
+ : integral_constant<bool,true>
+ {};
+
+ }
+}
+
#endif