1 /* $NetBSD: cpp_atomic_ops_linkable.cc,v 1.4 2016/02/27 18:50:39 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann <martin@NetBSD.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * This is a simple link-time test to verify all builtin atomic sync 34 * operations for C++ <atomic> are available. 35 */ 36 37 #include <atomic> 38 #include <machine/types.h> // for __HAVE_ATOMIC64_OPS 39 40 template <class T> 41 class ATest { 42 public: 43 ATest() : m_val(0) 44 { 45 m_val.exchange(std::atomic<T>(8)); 46 m_val--; 47 m_val++; 48 m_val ^= 0x0f; 49 m_val &= 0x0f; 50 m_val |= 2; 51 52 T tval(1), other(42); 53 m_val.compare_exchange_weak(tval, other, 54 std::memory_order_release, std::memory_order_relaxed); 55 } 56 57 private: 58 volatile std::atomic<T> m_val; 59 }; 60 61 #if defined(__clang__) && defined(__sparc64__) 62 #define NO_SHORT_ATOMICS 63 #endif 64 65 int main(int argc, char **argv) 66 { 67 #ifndef NO_SHORT_ATOMICS 68 ATest<char>(); 69 ATest<signed char>(); 70 ATest<unsigned char>(); 71 ATest<short>(); 72 ATest<unsigned short>(); 73 #endif 74 ATest<int>(); 75 ATest<unsigned int>(); 76 ATest<long>(); 77 ATest<unsigned long>(); 78 #ifdef __HAVE_ATOMIC64_OPS 79 ATest<long long>(); 80 ATest<unsigned long long>(); 81 #endif 82 #ifndef NO_SHORT_ATOMICS 83 ATest<char16_t>(); 84 #endif 85 ATest<char32_t>(); 86 ATest<wchar_t>(); 87 #ifndef NO_SHORT_ATOMICS 88 ATest<int_least8_t>(); 89 ATest<uint_least8_t>(); 90 ATest<int_least16_t>(); 91 ATest<uint_least16_t>(); 92 #endif 93 ATest<int_least32_t>(); 94 ATest<uint_least32_t>(); 95 #ifdef __HAVE_ATOMIC64_OPS 96 ATest<int_least64_t>(); 97 ATest<uint_least64_t>(); 98 #endif 99 #ifndef NO_SHORT_ATOMICS 100 ATest<int_fast8_t>(); 101 ATest<uint_fast8_t>(); 102 ATest<int_fast16_t>(); 103 ATest<uint_fast16_t>(); 104 #endif 105 ATest<int_fast32_t>(); 106 ATest<uint_fast32_t>(); 107 #ifdef __HAVE_ATOMIC64_OPS 108 ATest<int_fast64_t>(); 109 ATest<uint_fast64_t>(); 110 #endif 111 ATest<intptr_t>(); 112 ATest<uintptr_t>(); 113 ATest<std::size_t>(); 114 ATest<std::ptrdiff_t>(); 115 #ifdef __HAVE_ATOMIC64_OPS 116 ATest<intmax_t>(); 117 ATest<uintmax_t>(); 118 #endif /* NO_SHORT_ATOMICS */ 119 } 120