boostorg/unordered
1
0
Fork 1
mirror of https://github.com/boostorg/unordered.git synced 2025-07-30 11:27:15 +02:00
Code Issues Packages Projects Releases Wiki Activity

Unordered: Account for cost of creating tuple.

Browse Source 
[SVN r74133]
This commit is contained in:
Daniel James
2011-08-29 15:19:40 +00:00
parent 395c744d6f
commit f64b5ba3f8
1 changed files with 9 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
test/unordered/unnecessary_copy_tests.cpp
View File

@ -408,14 +408,20 @@ namespace unnecessary_copy_tests
std::make_tuple(std::ref(b.second))); std::make_tuple(std::ref(b.second)));
COPY_COUNT(0); MOVE_COUNT(0); COPY_COUNT(0); MOVE_COUNT(0);
// first is const so it is copied. std::pair<count_copies const, count_copies> move_source_trial;
// second is not const so it is moved. reset();
std::make_tuple(std::move(move_source_trial.first));
std::make_tuple(std::move(move_source_trial.second));
int tuple_move_cost = ::unnecessary_copy_tests::count_copies::moves;
int tuple_copy_cost = ::unnecessary_copy_tests::count_copies::copies;
std::pair<count_copies const, count_copies> move_source; std::pair<count_copies const, count_copies> move_source;
reset(); reset();
x.emplace(boost::unordered::piecewise_construct, x.emplace(boost::unordered::piecewise_construct,
std::make_tuple(std::move(move_source.first)), std::make_tuple(std::move(move_source.first)),
std::make_tuple(std::move(move_source.second))); std::make_tuple(std::move(move_source.second)));
COPY_COUNT(1); MOVE_COUNT(1); COPY_COUNT(tuple_copy_cost);
MOVE_COUNT(tuple_move_cost);
#if defined(__GNUC__) && __GNUC__ > 4 || \ #if defined(__GNUC__) && __GNUC__ > 4 || \
defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ >= 6 defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ >= 6