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Added test for const prvalues in insert vs. emplace

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This commit is contained in:
Ion Gaztañaga
2014-08-04 00:41:47 +02:00
parent 03582c4498
commit 644bea4404
1 changed files with 33 additions and 2 deletions
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35
bench/bench_insert_vs_emplace.cpp
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@@ -107,8 +107,10 @@ operator<<(std::ostream& os, X::special const& sp)
X::special X::sp = X::special(); X::special X::sp = X::special();
int const X produce_const_prvalue()
main() { return X(0, 0); }
int main()
{ {
X::special insert_results; X::special insert_results;
X::special emplace_results; X::special emplace_results;
@@ -169,6 +171,35 @@ main()
emplace_results = X::sp; emplace_results = X::sp;
} }
BOOST_TEST_EQ(insert_results == emplace_results, true); BOOST_TEST_EQ(insert_results == emplace_results, true);
{
boost::container::vector<X> v;
v.reserve(4);
v.push_back(X(0,0));
v.push_back(X(0,0));
v.push_back(X(0,0));
X x(0,0);
std::cout << "--emplace const prvalue no reallocation--\n";
X::sp = X::special();
v.emplace(v.begin(), produce_const_prvalue());
std::cout << X::sp;
std::cout << "----\n";
emplace_results = X::sp;
}
{
boost::container::vector<X> v;
v.reserve(4);
v.push_back(X(0,0));
v.push_back(X(0,0));
v.push_back(X(0,0));
X x(0,0);
std::cout << "--emplace const prvalue no reallocation--\n";
X::sp = X::special();
v.insert(v.begin(), produce_const_prvalue());
std::cout << X::sp;
std::cout << "----\n";
insert_results = X::sp;
}
BOOST_TEST_EQ(insert_results == emplace_results, true);
{ {
boost::container::vector<X> v; boost::container::vector<X> v;
v.reserve(4); v.reserve(4);