xentara::utils::realTime::DmaLatencyGuard Class Reference

This class sets the DMA latency of the system to a certain value for the duration of its lifetime. More...

#include <realTime/DmaLatencyGuard.hpp>

Public Member Functions
	DmaLatencyGuard (std::int32_t latency=0)
	Constructor.
	~DmaLatencyGuard ()=default
	Destructor.

Detailed Description

This class sets the DMA latency of the system to a certain value for the duration of its lifetime.

Note

On operating systems that do not support modifying the DMA latency, this class is a no-op.

Constructor & Destructor Documentation

DmaLatencyGuard()

xentara::utils::realTime::DmaLatencyGuard::DmaLatencyGuard

(

std::int32_t

latency = 0

)

Constructor.

The constructor tells the operating system that this process requires a DMA letency no higher than the given value. The operating system will adjust the actual DMA latency accordingly.

Note

On operating systems that do not support modifying the DMA latency, this function is a no-op.

Parameters

latency

The desired latency value

~DmaLatencyGuard()

xentara::utils::realTime::DmaLatencyGuard::~DmaLatencyGuard ( )

default

Destructor.

The destructor tells the operating system that this process no longer requires a special DMA latency. The operating system will adjust the actualö DMA latency accordingly.

Note

On operating systems that do not support modifying the DMA latency, this function is a no-op.