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Unordered: Fix unnecessary_copy_tests failures.

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[SVN r73894]
This commit is contained in:
Daniel James
2011-08-18 19:29:02 +00:00
parent c001139465
commit 2ecfa0e08c
3 changed files with 58 additions and 19 deletions
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12
include/boost/unordered/detail/extract_key.hpp
View File

@ -38,6 +38,11 @@ namespace detail {
return v;
}
static key_type const& extract(BOOST_RV_REF(key_type) v)
{
return v;
}
static no_key extract()
{
return no_key();
@ -86,6 +91,13 @@ namespace detail {
return v;
}
// TODO: Why does this cause errors?
//
//static key_type const& extract(BOOST_RV_REF(key_type) v)
//{
// return v;
//}
template <class Second>
static key_type const& extract(std::pair<key_type, Second> const& v)
{

6
include/boost/unordered/detail/unique.hpp
View File

@ -242,9 +242,11 @@ namespace boost { namespace unordered { namespace detail {
#else
template <class Arg0>
emplace_return emplace(Arg0 const& arg0)
emplace_return emplace(BOOST_FWD_REF(Arg0) arg0)
{
return emplace_impl(extractor::extract(arg0), arg0);
return emplace_impl(
extractor::extract(boost::forward<Arg0>(arg0)),
boost::forward<Arg0>(arg0));
}
#define BOOST_UNORDERED_INSERT1_IMPL(z, n, _) \

59
test/unordered/unnecessary_copy_tests.cpp
View File

@ -82,31 +82,37 @@ namespace unnecessary_copy_tests
}
#define COPY_COUNT(n) \
if(count_copies::copies != n) { \
if(::unnecessary_copy_tests::count_copies::copies != n) { \
BOOST_ERROR("Wrong number of copies."); \
std::cerr \
<< "Number of copies: " << count_copies::copies \
<< "Number of copies: " \
<< ::unnecessary_copy_tests::count_copies::copies \
<< " expecting: " << n << std::endl; \
}
#define MOVE_COUNT(n) \
if(count_copies::moves != n) { \
if(::unnecessary_copy_tests::count_copies::moves != n) { \
BOOST_ERROR("Wrong number of moves."); \
std::cerr \
<< "Number of moves: " << count_copies::moves \
<< "Number of moves: " \
<< ::unnecessary_copy_tests::count_copies::moves \
<< " expecting: " <<n << std::endl; \
}
#define COPY_COUNT_RANGE(a, b) \
if(count_copies::copies < a || count_copies::copies > b) { \
if(::unnecessary_copy_tests::count_copies::copies < a || \
::unnecessary_copy_tests::count_copies::copies > b) { \
BOOST_ERROR("Wrong number of copies."); \
std::cerr \
<< "Number of copies: " << count_copies::copies \
<< "Number of copies: " \
<< ::unnecessary_copy_tests::count_copies::copies \
<< " expecting: [" << a << ", " << b << "]" << std::endl; \
}
#define MOVE_COUNT_RANGE(a, b) \
if(count_copies::moves < a || count_copies::moves > b) { \
if(::unnecessary_copy_tests::count_copies::moves < a || \
::unnecessary_copy_tests::count_copies::moves > b) { \
BOOST_ERROR("Wrong number of moves."); \
std::cerr \
<< "Number of moves: " << count_copies::copies \
<< "Number of moves: " \
<< ::unnecessary_copy_tests::count_copies::copies \
<< " expecting: [" << a << ", " << b << "]" << std::endl; \
}
@ -150,7 +156,7 @@ namespace unnecessary_copy_tests
reset();
T x;
x.emplace(source<BOOST_DEDUCED_TYPENAME T::value_type>());
#if defined(BOOST_UNORDERED_STD_FORWARD_MOVE)
#if !defined(BOOST_NO_RVALUE_REFERENCES)
COPY_COUNT(1);
#else
COPY_COUNT(2);
@ -212,6 +218,15 @@ namespace unnecessary_copy_tests
UNORDERED_AUTO_TEST(unnecessary_copy_emplace_set_test)
{
// When calling 'source' the object is moved on some compilers, but not
// others. So count that here to adjust later.
reset();
source<count_copies>();
int source_cost = ::unnecessary_copy_tests::count_copies::moves;
//
reset();
boost::unordered_set<count_copies> x;
count_copies a;
@ -229,9 +244,8 @@ namespace unnecessary_copy_tests
#if defined(BOOST_UNORDERED_STD_FORWARD_MOVE)
COPY_COUNT(1); MOVE_COUNT(0);
#else
// TODO: I think that in this case the move could be delayed until
// after checking for a collision, giving MOVE_COUNT(0).
COPY_COUNT(1); MOVE_COUNT(1);
// source_cost doesn't make much sense here, but it seems to fit.
COPY_COUNT(1); MOVE_COUNT(source_cost);
#endif
//
@ -248,7 +262,7 @@ namespace unnecessary_copy_tests
// copied.
reset();
x.emplace(source<count_copies>());
COPY_COUNT(1); MOVE_COUNT(0);
COPY_COUNT(1); MOVE_COUNT(source_cost);
#if defined(BOOST_UNORDERED_STD_FORWARD_MOVE)
// No move should take place.
@ -284,6 +298,15 @@ namespace unnecessary_copy_tests
UNORDERED_AUTO_TEST(unnecessary_copy_emplace_map_test)
{
// When calling 'source' the object is moved on some compilers, but not
// others. So count that here to adjust later.
reset();
source<count_copies>();
int source_cost = ::unnecessary_copy_tests::count_copies::moves;
//
reset();
boost::unordered_map<count_copies, count_copies> x;
// TODO: Run tests for pairs without const etc.
@ -310,9 +333,12 @@ namespace unnecessary_copy_tests
// A new object is created by source, but it shouldn't be moved or
// copied.
//
// (Note: source_cost is not needed here, because std::pair is not
// move enabled).
reset();
x.emplace(source<std::pair<count_copies, count_copies> >());
COPY_COUNT(2); MOVE_COUNT_RANGE(0,2);
COPY_COUNT(2); MOVE_COUNT(0);
// TODO: This doesn't work on older versions of gcc.
//count_copies part;
@ -330,7 +356,6 @@ namespace unnecessary_copy_tests
COPY_COUNT(0); MOVE_COUNT(0);
#endif
//
// 2 arguments
//
@ -341,12 +366,12 @@ namespace unnecessary_copy_tests
reset();
x.emplace(source<count_copies>(), source<count_copies>());
COPY_COUNT(2); MOVE_COUNT(0);
COPY_COUNT(2); MOVE_COUNT(source_cost * 2);
// source<count_copies> creates a single copy.
reset();
x.emplace(b.first, source<count_copies>());
COPY_COUNT(1); MOVE_COUNT(0);
COPY_COUNT(1); MOVE_COUNT(source_cost);
reset();
x.emplace(count_copies(b.first.tag_), count_copies(b.second.tag_));