# CUpti_StreamAttrData Struct Reference
[CUPTI Callback API]

Stream attribute data passed into a resource callback function for CUPTI_CBID_RESOURCE_STREAM_ATTRIBUTE_CHANGED callback. More...

## Data Fields
CUstreamAttrID | attr
CUstream | stream
const CUstreamAttrValue * | value

## Detailed Description

Data passed into a resource callback function as the `cbdata` argument to CUpti_CallbackFunc. The `cbdata` will be this type for `domain` equal to CUPTI_CB_DOMAIN_RESOURCE. The stream attribute data is valid only within the invocation of the callback function that is passed the data. If you need to retain some data for use outside of the callback, you must make a copy of that data.

## Field Documentation

CUstreamAttrID CUpti_StreamAttrData::attr

The type of the CUDA stream attribute

CUstream CUpti_StreamAttrData::stream

The CUDA stream handle for the attribute

const CUstreamAttrValue* CUpti_StreamAttrData::value

The value of the CUDA stream attribute