Struct OptionalCUDAGuard

• Defined in File CUDAGuard.h

Struct Documentation

struct OptionalCUDAGuard

A variant of OptionalDeviceGuard that is specialized for CUDA.

See CUDAGuard for when you can use this.

Public Functions

inline explicit OptionalCUDAGuard()

Create an uninitialized OptionalCUDAGuard.

inline explicit OptionalCUDAGuard(optional<Device> device_opt)

Set the current CUDA device to the passed Device, if it is not nullopt.

inline explicit OptionalCUDAGuard(optional<DeviceIndex> device_index_opt)

Set the current CUDA device to the passed device index, if it is not nullopt.

OptionalCUDAGuard(const OptionalCUDAGuard&) = delete

OptionalCUDAGuard &operator=(const OptionalCUDAGuard&) = delete

OptionalCUDAGuard(OptionalCUDAGuard &&other) = delete

OptionalCUDAGuard &operator=(OptionalCUDAGuard &&other) = delete

inline void set_device(Device device)

Sets the CUDA device to the given device, initializing the guard if it is not already initialized.

Errors if the given device is not a CUDA device.

inline void reset_device(Device device)

Sets the CUDA device to the given device, initializing the guard if it is not already initialized.

Errors if the given device is not a CUDA device. (This method is provided for uniformity with OptionalDeviceGuard).

inline void set_index(DeviceIndex device_index)

Sets the CUDA device to the given device index, initializing the guard if it is not already initialized.

inline std::optional<Device> original_device() const

Returns the device that was set immediately prior to initialization of the guard, or nullopt if the guard is uninitialized.

inline std::optional<Device> current_device() const

Returns the most recent device that was set using this device guard, either from construction, or via set_device, if the guard is initialized, or nullopt if the guard is uninitialized.

inline void reset()

Restore the original CUDA device, resetting this guard to uninitialized state.