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std:: atomic_signal_fence

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Memory ordering
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atomic_signal_fence
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定义于头文件 <atomic>
extern "C" void atomic_signal_fence ( std:: memory_order order ) noexcept ;
(C++11 起)

在同一个线程中的线程与信号处理程序之间，按照 order 指示建立非原子操作及宽松原子操作的内存同步顺序。此操作等效于 std::atomic_thread_fence ，区别在于不会发出用于内存排序的CPU指令。仅根据 order 的指示抑制编译器对指令的重排序。例如，具有释放语义的栅栏会阻止读/写操作被移动到后续写操作之后，而具有获取语义的栅栏会阻止读/写操作被移动到前置读操作之前。

目录

参数

order - 此栅栏执行的内存排序

返回值

(无)

示例

本节内容不完整
原因：缺少示例

参见

(C++11)
为给定的原子操作定义内存排序约束
(枚举)
(C++11)
通用的内存顺序相关栅栏同步原语
(函数)
C 文档 关于 atomic_signal_fence