本文整理汇总了C++中boost::atomic::fetch_and方法的典型用法代码示例。如果您正苦于以下问题：C++ atomic::fetch_and方法的具体用法？C++ atomic::fetch_and怎么用？C++ atomic::fetch_and使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类boost::atomic的用法示例。
在下文中一共展示了atomic::fetch_and方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
bool
test_bitops(boost::atomic<value_type> & shared_value, size_t instance)
{
size_t shift = instance * 8;
value_type mask = 0xff << shift;
value_type expected = 0;
for (size_t k = 0; k < 8; k++) {
value_type mod = 1 << k;
value_type tmp = shared_value.fetch_or(mod << shift, boost::memory_order_relaxed);
if ( (tmp & mask) != (expected << shift))
return false;
expected = expected | mod;
}
for (size_t k = 0; k < 8; k++) {
value_type tmp = shared_value.fetch_and( ~ (1 << (shift + k)), boost::memory_order_relaxed);
if ( (tmp & mask) != (expected << shift))
return false;
expected = expected & ~(1<<k);
}
for (size_t k = 0; k < 8; k++) {
value_type mod = 255 ^ (1 << k);
value_type tmp = shared_value.fetch_xor(mod << shift, boost::memory_order_relaxed);
if ( (tmp & mask) != (expected << shift))
return false;
expected = expected ^ mod;
}
value_type tmp = shared_value.fetch_and( ~mask, boost::memory_order_relaxed);
if ( (tmp & mask) != (expected << shift) )
return false;
return true;
}