libstdc++-v3/testsuite/29_atomics/atomic/requirements/compare_exchange_lowering.cc

   1 // { dg-options "-std=gnu++11" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2013 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <atomic>
  22 #include <testsuite_common_types.h>
  23
  24 #define TEST_ALL_ORDERS()                       \
  25   do {                                          \
  26     ORDER_TEST(std::memory_order_relaxed);      \
  27     ORDER_TEST(std::memory_order_consume);      \
  28     ORDER_TEST(std::memory_order_acquire);      \
  29     ORDER_TEST(std::memory_order_release);      \
  30     ORDER_TEST(std::memory_order_acq_rel);      \
  31     ORDER_TEST(std::memory_order_seq_cst);      \
  32   } while(0)
  33
  34 void test01()
  35 {
  36 #define ORDER_TEST(ORDER)                                               \
  37   do {                                                                  \
  38     __gnu_test::compare_exchange_order_lowering<ORDER> test;            \
  39     __gnu_cxx::typelist::apply_generator(test,                          \
  40                                          __gnu_test::integral_types::type()); \
  41   } while (0);
  42   TEST_ALL_ORDERS();
  43 #undef ORDER_TEST
  44
  45   enum e { a, b, c };
  46 #define ORDER_TEST(ORDER)                               \
  47   do {                                                  \
  48     std::atomic<e> x(a);                                \
  49     e expected = a;                                     \
  50     x.compare_exchange_strong(expected, b, ORDER);      \
  51     x.compare_exchange_weak(expected, c, ORDER);        \
  52   } while (0);
  53   TEST_ALL_ORDERS();
  54 #undef ORDER_TEST
  55
  56 #define ORDER_TEST(ORDER)                       \
  57   do {                                          \
  58     std::atomic<void*> x(nullptr);              \
  59     void* expected = nullptr;                   \
  60     x.compare_exchange_strong(expected, nullptr, ORDER);        \
  61     x.compare_exchange_weak(expected, nullptr, ORDER);          \
  62   } while (0);
  63   TEST_ALL_ORDERS();
  64 #undef ORDER_TEST
  65 }