Using memory barriers (barriers.h)

This API is defined in the header file sysroot-*-kos/include/coresrv/io/barriers.h from the KasperskyOS SDK.

The API sets barriers for reading from memory and/or writing to memory. A memory barrier is an instruction for a compiler or processor that guarantees that memory access operations specified in source code before setting a barrier will be executed before the memory access operations specified in source code after setting a barrier. Use of memory barriers is required if the specific order of memory write and memory read operations is important. Otherwise, the optimization mechanisms of a compiler and/or processor could cause these operations to be executed in a different order than the order specified in the source code.

Information about API functions is provided in the table below.

barriers.h functions

Function	Information about the function
`IoReadBarrier()`	Purpose Sets a barrier for reading from memory. Parameters N/A Returned values N/A
`IoWriteBarrier()`	Purpose Sets a barrier for writing to memory. Parameters N/A Returned values N/A
`IoReadWriteBarrier()`	Purpose Sets a barrier for writing to memory and reading from memory. Parameters N/A Returned values N/A

Function

Information about the function

IoReadBarrier()

Purpose

Sets a barrier for reading from memory.

Parameters

N/A

Returned values

N/A

IoWriteBarrier()

Purpose

Sets a barrier for writing to memory.

Parameters

N/A

Returned values

N/A

IoReadWriteBarrier()

Purpose

Sets a barrier for writing to memory and reading from memory.

Parameters

N/A

Returned values

N/A

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