6 releases (3 breaking)

0.4.0 Feb 15, 2024
0.3.0 Feb 8, 2024
0.2.2 Jan 15, 2024
0.2.1 Dec 13, 2022
0.1.0 Jun 2, 2021

#306 in Unix APIs

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Custom license

15KB
126 lines

DMA-Buf Heap Helper Library

The DMA-Buf Heap interface in Linux is aimed at providing a way for the user-space to allocate memory buffers that can be efficiently shared between multiple devices through the DMA-Buf mechanism. It aims at superseeding the ION Interface previously found in Android.

This library provides a safe abstraction over this interface for Rust.

Hello World

use std::os::unix::io::OwnedFd;
use dma_heap::{Heap, HeapKind};

let heap = Heap::new(HeapKind::Cma)
    .unwrap();

// Buffer will automatically be freed when `buffer` goes out of scope.
let buffer: OwnedFd = heap.allocate(1024).unwrap();

Dependencies

~2–11MB
~127K SLoC