| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include <atomic> |
| |
| template <class A> |
| bool cmpxchg_weak_loop(A& atomic, typename A::value_type& expected, typename A::value_type desired) { |
| for (int i = 0; i < 10; i++) { |
| if (atomic.compare_exchange_weak(expected, desired) == true) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| template <class A> |
| bool cmpxchg_weak_loop(A& atomic, typename A::value_type& expected, typename A::value_type desired, |
| std::memory_order success, |
| std::memory_order failure) { |
| for (int i = 0; i < 10; i++) { |
| if (atomic.compare_exchange_weak(expected, desired, success, |
| failure) == true) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| template <class A> |
| bool c_cmpxchg_weak_loop(A* atomic, typename A::value_type* expected, typename A::value_type desired) { |
| for (int i = 0; i < 10; i++) { |
| if (std::atomic_compare_exchange_weak(atomic, expected, desired) == true) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| template <class A> |
| bool c_cmpxchg_weak_loop(A* atomic, typename A::value_type* expected, typename A::value_type desired, |
| std::memory_order success, |
| std::memory_order failure) { |
| for (int i = 0; i < 10; i++) { |
| if (std::atomic_compare_exchange_weak_explicit(atomic, expected, desired, |
| success, failure) == true) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |