You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.8 KiB
60 lines
1.8 KiB
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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;
|
|
}
|