Struct Array

pub struct Array<'a, T: Clone> { /* private fields */ }

Array map corresponding to BPF_MAP_TYPE_ARRAY

Example

use redbpf::{load::Loader, Array};
let loaded = Loader::load(b"biolatpcts.elf").expect("error loading BPF program");
let biolat = Array::<u64>::new(loaded.map("biolat").expect("arr not found")).expect("error creating Array in userspace");
let v = biolat.get(0).unwrap();

This structure is used by userspace programs. For BPF program’s API, see redbpf_probes::maps::Array

Implementations

impl<'base, T: Clone> Array<'base, T>

pub fn new(base: &Map) -> Result<Array<'_, T>>

Create Array map from base

pub fn set(&self, index: u32, value: T) -> Result<()>

Set value into this array map at index

This method can fail if index is out of bound

pub fn get(&self, index: u32) -> Option<T>

Get an element at index from this array map

This method always returns a Some(T) if index is valid, but None can be returned if index is out of bound.

pub fn len(&self) -> usize

Get length of this array map.