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| HDF5 Last Updated on 2026-03-23 The HDF5 Field Guide

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H5VL_request_class_t Struct Reference

`#include <src/H5VLconnector.h>`

## Data Fields
herr_t(* | cancel )(void *req, H5VL_request_status_t *status)
herr_t(* | free )(void *req)
herr_t(* | notify )(void *req, H5VL_request_notify_t cb, void *ctx)
herr_t(* | optional )(void *req, H5VL_optional_args_t *args)
herr_t(* | specific )(void *req, H5VL_request_specific_args_t *args)
herr_t(* | wait )(void *req, uint64_t timeout, H5VL_request_status_t *status)

## Field Documentation

## ◆ cancel

herr_t(* cancel) (void *req, H5VL_request_status_t *status)

## ◆ free

herr_t(* free) (void *req)

## ◆ notify

herr_t(* notify) (void *req, H5VL_request_notify_t cb, void *ctx)

## ◆ optional

herr_t(* optional) (void *req, H5VL_optional_args_t *args)

## ◆ specific

herr_t(* specific) (void *req, H5VL_request_specific_args_t *args)

## ◆ wait

herr_t(* wait) (void *req, uint64_t timeout, H5VL_request_status_t *status)

The documentation for this struct was generated from the following file:

- src/H5VLconnector.h