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Unordered: Support piecewise pair construction.

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Will need to deprecate the old variadic style pair construction, also
should look into extract_key, was written for compatibility with older
compilers that are no longer supported.

[SVN r74119]
This commit is contained in:
Daniel James
2011-08-29 09:40:41 +00:00
parent 4dcf34c264
commit 155077cba0
6 changed files with 212 additions and 11 deletions
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48
test/unordered/unnecessary_copy_tests.cpp
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@@ -1,4 +1,4 @@
#include <iostream>
// Copyright 2006-2009 Daniel James.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -327,6 +327,13 @@ namespace unnecessary_copy_tests
x.emplace();
COPY_COUNT(2); MOVE_COUNT(0);
reset();
x.emplace(boost::unordered::piecewise_construct,
boost::make_tuple(),
boost::make_tuple());
COPY_COUNT(2); MOVE_COUNT(0);
//
// 1 argument
//
@@ -345,19 +352,23 @@ namespace unnecessary_copy_tests
(defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ > 2) || \
(defined(BOOST_MSVC) && BOOST_MSVC >= 1600 ) || \
(!defined(__GNUC__) && !defined(BOOST_MSVC))
count_copies part;
reset();
std::pair<count_copies const&, count_copies const&> a_ref(part, part);
x.emplace(a_ref);
COPY_COUNT(2); MOVE_COUNT(0);
#endif
#if defined(BOOST_UNORDERED_STD_FORWARD_MOVE)
// No move should take place.
// (since a is already in the container)
reset();
x.emplace(std::move(a));
COPY_COUNT(0); MOVE_COUNT(0);
#endif
//
@@ -382,6 +393,41 @@ namespace unnecessary_copy_tests
reset();
x.emplace(count_copies(b.first.tag_), count_copies(b.second.tag_));
COPY_COUNT(2); MOVE_COUNT(0);
reset();
x.emplace(boost::unordered::piecewise_construct,
boost::make_tuple(boost::ref(b.first)),
boost::make_tuple(boost::ref(b.second)));
COPY_COUNT(0); MOVE_COUNT(0);
#if !defined(BOOST_NO_0X_HDR_TUPLE) || defined(BOOST_HAS_TR1_TUPLE)
reset();
x.emplace(boost::unordered::piecewise_construct,
std::make_tuple(std::ref(b.first)),
std::make_tuple(std::ref(b.second)));
COPY_COUNT(0); MOVE_COUNT(0);
// first is const so it is copied.
// second is not const so it is moved.
std::pair<count_copies const, count_copies> move_source;
reset();
x.emplace(boost::unordered::piecewise_construct,
std::make_tuple(std::move(move_source.first)),
std::make_tuple(std::move(move_source.second)));
COPY_COUNT(1); MOVE_COUNT(1);
#if defined(__GNUC__) && __GNUC__ > 4 || \
defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ >= 6
reset();
x.emplace(boost::unordered::piecewise_construct,
std::forward_as_tuple(b.first),
std::forward_as_tuple(b.second));
COPY_COUNT(0); MOVE_COUNT(0);
#endif
#endif
}
}