_ReadBarrier

 

For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.

Microsoft Specific

Limits the compiler optimizations that can reorder memory access operations across the point of the call.

System_CAPS_ICON_caution.jpg Caution

The _ReadBarrier, _WriteBarrier, and _ReadWriteBarrier compiler intrinsics and the MemoryBarrier macro are all deprecated and should not be used. For inter-thread communication, use mechanisms such as atomic_thread_fence and std::atomic<T> that are defined in the C++ Standard Library. For hardware access, use the /volatile:iso compiler option together with the volatile keyword.

void _ReadBarrier(void);  

IntrinsicArchitecture
_ReadBarrierx86, x64

Header file <intrin.h>

The _ReadBarrier intrinsic limits the compiler optimizations that can remove or reorder memory access operations across the point of the call.

Compiler Intrinsics
Keywords

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