//===----------------------------------------------------------------------===//
//
// 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++03, c++11, c++14, c++17
// UNSUPPORTED: no-localization
// UNSUPPORTED: libcpp-has-no-experimental-syncstream
// <syncstream>
// template <class charT, class traits, class Allocator>
// class basic_syncbuf;
// basic_syncbuf(basic_syncbuf&& other);
#include <syncstream>
#include <cassert>
#include "test_macros.h"
#include "constexpr_char_traits.h"
#include "test_allocator.h"
template <class CharT>
void test() {
{
using Buf = std::basic_syncbuf<CharT>;
const std::allocator<CharT> alloc;
{
Buf b1{nullptr, alloc};
Buf b2{std::move(b1)};
assert(b2.get_wrapped() == nullptr);
assert(b2.get_allocator() == alloc);
}
{
Buf w;
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
#endif
{
Buf b1{&w, alloc};
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
#endif
Buf b2{std::move(b1)};
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
#endif
assert(b2.get_wrapped() == &w);
assert(b2.get_allocator() == alloc);
}
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
#endif
}
}
{
using Buf = std::basic_syncbuf<CharT, constexpr_char_traits<CharT>>;
const std::allocator<CharT> alloc;
{
Buf b1{nullptr, alloc};
Buf b2{std::move(b1)};
assert(b2.get_wrapped() == nullptr);
assert(b2.get_allocator() == alloc);
}
{
Buf w;
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
#endif
{
Buf b1{&w, alloc};
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
#endif
Buf b2{std::move(b1)};
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
#endif
assert(b2.get_wrapped() == &w);
assert(b2.get_allocator() == alloc);
}
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
#endif
}
}
{
using Buf = std::basic_syncbuf<CharT, constexpr_char_traits<CharT>, test_allocator<CharT>>;
test_allocator<CharT> alloc{42};
{
Buf b1{nullptr, alloc};
Buf b2{std::move(b1)};
assert(b2.get_wrapped() == nullptr);
assert(b2.get_allocator() == alloc);
}
{
Buf w;
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
#endif
{
Buf b1{&w, alloc};
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
#endif
Buf b2{std::move(b1)};
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 1);
#endif
assert(b2.get_wrapped() == &w);
assert(b2.get_allocator() == alloc);
}
#if defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_THREADS)
assert(std::__wrapped_streambuf_mutex::__instance().__get_count(&w) == 0);
#endif
}
}
}
int main(int, char**) {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
return 0;
}