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      1 /* $NetBSD: cpp_atomic_ops_linkable.cc,v 1.5 2017/01/11 12:10:26 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 (at) 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 int main(int argc, char **argv)
     62 {
     63   ATest<char>();
     64   ATest<signed char>();
     65   ATest<unsigned char>();
     66   ATest<short>();
     67   ATest<unsigned short>();
     68   ATest<int>();
     69   ATest<unsigned int>();
     70   ATest<long>();
     71   ATest<unsigned long>();
     72 #ifdef __HAVE_ATOMIC64_OPS
     73   ATest<long long>();
     74   ATest<unsigned long long>();
     75 #endif
     76   ATest<char16_t>();
     77   ATest<char32_t>();
     78   ATest<wchar_t>();
     79   ATest<int_least8_t>();
     80   ATest<uint_least8_t>();
     81   ATest<int_least16_t>();
     82   ATest<uint_least16_t>();
     83   ATest<int_least32_t>();
     84   ATest<uint_least32_t>();
     85 #ifdef __HAVE_ATOMIC64_OPS
     86   ATest<int_least64_t>();
     87   ATest<uint_least64_t>();
     88 #endif
     89   ATest<int_fast8_t>();
     90   ATest<uint_fast8_t>();
     91   ATest<int_fast16_t>();
     92   ATest<uint_fast16_t>();
     93   ATest<int_fast32_t>();
     94   ATest<uint_fast32_t>();
     95 #ifdef __HAVE_ATOMIC64_OPS
     96   ATest<int_fast64_t>();
     97   ATest<uint_fast64_t>();
     98 #endif
     99   ATest<intptr_t>();
    100   ATest<uintptr_t>();
    101   ATest<std::size_t>();
    102   ATest<std::ptrdiff_t>();
    103 #ifdef __HAVE_ATOMIC64_OPS
    104   ATest<intmax_t>();
    105   ATest<uintmax_t>();
    106 #endif
    107 }
    108