WSJT-X/boost/libs/config/test/boost_no_cxx11_hdr_atomic.ipp

91 lines
2.9 KiB
C++

// (C) Copyright John Maddock 2013
// Use, modification and distribution are subject to 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)
// See http://www.boost.org/libs/config for more information.
// MACRO: BOOST_NO_CXX11_HDR_ATOMIC
// TITLE: C++11 <atomic> header is either not present or too broken to be used
// DESCRIPTION: The compiler does not support the C++11 header <atomic>
#include <atomic>
#if !defined(ATOMIC_BOOL_LOCK_FREE) || !defined(ATOMIC_CHAR_LOCK_FREE) || !defined(ATOMIC_CHAR16_T_LOCK_FREE) \
|| !defined(ATOMIC_CHAR32_T_LOCK_FREE) || !defined(ATOMIC_WCHAR_T_LOCK_FREE) || !defined(ATOMIC_SHORT_LOCK_FREE)\
|| !defined(ATOMIC_INT_LOCK_FREE) || !defined(ATOMIC_LONG_LOCK_FREE) || !defined(ATOMIC_LLONG_LOCK_FREE)\
|| !defined(ATOMIC_POINTER_LOCK_FREE)
# error "required macros not defined"
#endif
namespace boost_no_cxx11_hdr_atomic {
int test()
{
std::memory_order m = static_cast<std::memory_order>(std::memory_order_relaxed | std::memory_order_consume | std::memory_order_acquire | std::memory_order_release
| std::memory_order_acq_rel | std::memory_order_seq_cst);
(void)m;
std::atomic<int> a1;
std::atomic<unsigned> a2;
std::atomic<int*> a3;
a1.is_lock_free();
a1.store(1);
a1.load();
a1.exchange(2);
int v;
a1.compare_exchange_weak(v, 2, std::memory_order_relaxed, std::memory_order_relaxed);
a1.compare_exchange_strong(v, 2, std::memory_order_relaxed, std::memory_order_relaxed);
a1.fetch_add(2);
a1.fetch_sub(3);
a1.fetch_and(3);
a1.fetch_or(1);
a1.fetch_xor(1);
a1++;
++a1;
a1--;
--a1;
a1 += 2;
a1 -= 2;
a1 &= 1;
a1 |= 2;
a1 ^= 3;
a3.store(&v);
a3.fetch_add(1);
a3.fetch_sub(1);
++a3;
--a3;
a3++;
a3--;
a3 += 1;
a3 -= 1;
std::atomic_is_lock_free(&a1);
// This produces linker errors on Mingw32 for some reason, probably not required anyway for most uses??
//std::atomic_init(&a1, 2);
std::atomic_store(&a1, 3);
std::atomic_store_explicit(&a1, 3, std::memory_order_relaxed);
std::atomic_load(&a1);
std::atomic_load_explicit(&a1, std::memory_order_relaxed);
std::atomic_exchange(&a1, 3);
std::atomic_compare_exchange_weak(&a1, &v, 2);
std::atomic_compare_exchange_strong(&a1, &v, 2);
std::atomic_compare_exchange_weak_explicit(&a1, &v, 2, std::memory_order_relaxed, std::memory_order_relaxed);
std::atomic_compare_exchange_strong_explicit(&a1, &v, 2, std::memory_order_relaxed, std::memory_order_relaxed);
std::atomic_flag f = ATOMIC_FLAG_INIT;
f.test_and_set(std::memory_order_relaxed);
f.test_and_set();
f.clear(std::memory_order_relaxed);
f.clear();
std::atomic_thread_fence(std::memory_order_relaxed);
std::atomic_signal_fence(std::memory_order_relaxed);
return 0;
}
}