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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// template <>
// struct atomic<integral>
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(integral desr, memory_order m = memory_order_seq_cst) volatile;
// void store(integral desr, memory_order m = memory_order_seq_cst);
// integral load(memory_order m = memory_order_seq_cst) const volatile;
// integral load(memory_order m = memory_order_seq_cst) const;
// operator integral() const volatile;
// operator integral() const;
// integral exchange(integral desr,
// memory_order m = memory_order_seq_cst) volatile;
// integral exchange(integral desr, memory_order m = memory_order_seq_cst);
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order s, memory_order f);
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order s, memory_order f);
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst);
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst);
//
// integral
// fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_add(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_sub(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_and(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_or(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_xor(integral op, memory_order m = memory_order_seq_cst);
//
// atomic() = default;
// constexpr atomic(integral desr);
// atomic(const atomic&) = delete;
// atomic& operator=(const atomic&) = delete;
// atomic& operator=(const atomic&) volatile = delete;
// integral operator=(integral desr) volatile;
// integral operator=(integral desr);
//
// integral operator++(int) volatile;
// integral operator++(int);
// integral operator--(int) volatile;
// integral operator--(int);
// integral operator++() volatile;
// integral operator++();
// integral operator--() volatile;
// integral operator--();
// integral operator+=(integral op) volatile;
// integral operator+=(integral op);
// integral operator-=(integral op) volatile;
// integral operator-=(integral op);
// integral operator&=(integral op) volatile;
// integral operator&=(integral op);
// integral operator|=(integral op) volatile;
// integral operator|=(integral op);
// integral operator^=(integral op) volatile;
// integral operator^=(integral op);
// };
#include <atomic>
#include <new>
#include <cassert>
template <class A, class T>
void
do_test()
{
A obj(T(0));
assert(obj == T(0));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
std::atomic_init(&obj, T(2));
assert(obj == T(2));
bool b0 = obj.is_lock_free();
obj.store(T(0));
assert(obj == T(0));
obj.store(T(1), std::memory_order_release);
assert(obj == T(1));
assert(obj.load() == T(1));
assert(obj.load(std::memory_order_acquire) == T(1));
assert(obj.exchange(T(2)) == T(1));
assert(obj == T(2));
assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
T x = obj;
assert(obj.compare_exchange_weak(x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(obj.compare_exchange_weak(x, T(1)) == false);
assert(obj == T(2));
assert(x == T(2));
x = T(2);
assert(obj.compare_exchange_strong(x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(0)) == false);
assert(obj == T(1));
assert(x == T(1));
assert((obj = T(0)) == T(0));
assert(obj == T(0));
assert(obj++ == T(0));
assert(obj == T(1));
assert(++obj == T(2));
assert(obj == T(2));
assert(--obj == T(1));
assert(obj == T(1));
assert(obj-- == T(1));
assert(obj == T(0));
obj = T(2);
assert((obj += T(3)) == T(5));
assert(obj == T(5));
assert((obj -= T(3)) == T(2));
assert(obj == T(2));
assert((obj |= T(5)) == T(7));
assert(obj == T(7));
assert((obj &= T(0xF)) == T(7));
assert(obj == T(7));
assert((obj ^= T(0xF)) == T(8));
assert(obj == T(8));
{
_ALIGNAS_TYPE(A) char storage[sizeof(A)] = {23};
A& zero = *new (storage) A();
assert(zero == 0);
zero.~A();
}
}
template <class A, class T>
void test()
{
do_test<A, T>();
do_test<volatile A, T>();
}
int main()
{
test<std::atomic_char, char>();
test<std::atomic_schar, signed char>();
test<std::atomic_uchar, unsigned char>();
test<std::atomic_short, short>();
test<std::atomic_ushort, unsigned short>();
test<std::atomic_int, int>();
test<std::atomic_uint, unsigned int>();
test<std::atomic_long, long>();
test<std::atomic_ulong, unsigned long>();
test<std::atomic_llong, long long>();
test<std::atomic_ullong, unsigned long long>();
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
test<std::atomic_char16_t, char16_t>();
test<std::atomic_char32_t, char32_t>();
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
test<std::atomic_wchar_t, wchar_t>();
test<volatile std::atomic_char, char>();
test<volatile std::atomic_schar, signed char>();
test<volatile std::atomic_uchar, unsigned char>();
test<volatile std::atomic_short, short>();
test<volatile std::atomic_ushort, unsigned short>();
test<volatile std::atomic_int, int>();
test<volatile std::atomic_uint, unsigned int>();
test<volatile std::atomic_long, long>();
test<volatile std::atomic_ulong, unsigned long>();
test<volatile std::atomic_llong, long long>();
test<volatile std::atomic_ullong, unsigned long long>();
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
test<volatile std::atomic_char16_t, char16_t>();
test<volatile std::atomic_char32_t, char32_t>();
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
test<volatile std::atomic_wchar_t, wchar_t>();
}
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