vecmem::cuda::details::select_device Class Reference

Class with RAII mechanism for selecting a CUDA device. More...

#include </home/runner/work/vecmem/vecmem/cuda/src/utils/select_device.hpp>

Public Member Functions
	select_device (int device)
	Constructs the object, switching the current CUDA device to the requested number.
	~select_device ()
	Deconstructs the object, returning to the device that was selected before constructing this object.
int	device () const
	Identifier for the device being seleced.

Detailed Description

Class with RAII mechanism for selecting a CUDA device.

This class can be used to select CUDA devices in a modern C++ way, with scope safety. When an object of this class is constructed, it will switch the thread-local device selector to the device number specified in the constructor argument. When this object goes out of scope or gets destructed in any other way, it will restore the device that was set before the object was constructed. This allows us to easily write methods with few side-effects.

Warning

The behaviour of this class is not well-defined if you construct more than one in the same scope.

Constructor & Destructor Documentation

select_device()

vecmem::cuda::details::select_device::select_device

(

int

device

)

Constructs the object, switching the current CUDA device to the requested number.

Parameters

[in]

device

The CUDA device number to switch to.

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The documentation for this class was generated from the following files:

• cuda/src/utils/select_device.hpp
• cuda/src/utils/select_device.cpp