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// -*- C++ -*-
//===-- uninitialized_construct.pass.cpp ----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// Tests for uninitialized_default_construct, uninitialized_default_construct_n,
// uninitialized_value_construct, uninitialized_value_construct_n
#include "support/pstl_test_config.h"
#include <execution>
#include <memory>
#include "support/utils.h"
using namespace TestUtils;
// function of checking correctness for uninitialized.construct.value
template <typename T, typename Iterator>
bool
IsCheckValueCorrectness(Iterator begin, Iterator end)
{
for (; begin != end; ++begin)
{
if (*begin != T())
{
return false;
}
}
return true;
}
struct test_uninit_construct
{
template <typename Policy, typename Iterator>
void
operator()(Policy&& exec, Iterator begin, Iterator end, size_t n, /*is_trivial<T>=*/std::false_type)
{
typedef typename std::iterator_traits<Iterator>::value_type T;
// it needs for cleaning memory that was filled by default constructors in unique_ptr<T[]> p(new T[n])
// and for cleaning memory after last calling of uninitialized_value_construct_n.
// It is important for non-trivial types
std::destroy_n(exec, begin, n);
// reset counter of constructors
T::SetCount(0);
// run algorithm
std::uninitialized_default_construct(exec, begin, end);
// compare counter of constructors to length of container
EXPECT_TRUE(T::Count() == n, "wrong uninitialized_default_construct");
// destroy objects for testing new algorithms on same memory
std::destroy(exec, begin, end);
std::uninitialized_default_construct_n(exec, begin, n);
EXPECT_TRUE(T::Count() == n, "wrong uninitialized_default_construct_n");
std::destroy_n(exec, begin, n);
std::uninitialized_value_construct(exec, begin, end);
EXPECT_TRUE(T::Count() == n, "wrong uninitialized_value_construct");
std::destroy(exec, begin, end);
std::uninitialized_value_construct_n(exec, begin, n);
EXPECT_TRUE(T::Count() == n, "wrong uninitialized_value_construct_n");
}
template <typename Policy, typename Iterator>
void
operator()(Policy&& exec, Iterator begin, Iterator end, size_t n, /*is_trivial<T>=*/std::true_type)
{
typedef typename std::iterator_traits<Iterator>::value_type T;
std::uninitialized_default_construct(exec, begin, end);
std::destroy(exec, begin, end);
std::uninitialized_default_construct_n(exec, begin, n);
std::destroy_n(exec, begin, n);
std::uninitialized_value_construct(exec, begin, end);
// check correctness for uninitialized.construct.value
EXPECT_TRUE(IsCheckValueCorrectness<T>(begin, end), "wrong uninitialized_value_construct");
std::destroy(exec, begin, end);
std::uninitialized_value_construct_n(exec, begin, n);
EXPECT_TRUE(IsCheckValueCorrectness<T>(begin, end), "wrong uninitialized_value_construct_n");
std::destroy_n(exec, begin, n);
}
};
template <typename T>
void
test_uninit_construct_by_type()
{
std::size_t N = 100000;
for (size_t n = 0; n <= N; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
{
std::unique_ptr<T[]> p(new T[n]);
invoke_on_all_policies(test_uninit_construct(), p.get(), std::next(p.get(), n), n, std::is_trivial<T>());
}
}
int32_t
main()
{
// for user-defined types
#if !_PSTL_ICC_16_VC14_TEST_PAR_TBB_RT_RELEASE_64_BROKEN
test_uninit_construct_by_type<Wrapper<int32_t>>();
test_uninit_construct_by_type<Wrapper<std::vector<std::string>>>();
#endif
// for trivial types
test_uninit_construct_by_type<int8_t>();
test_uninit_construct_by_type<float64_t>();
std::cout << done() << std::endl;
return 0;
}
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