wasmer/entities/memory/buffer/
inner.rs

1use std::{marker::PhantomData, mem::MaybeUninit};
2
3use crate::{
4    MemoryAccessError,
5    macros::backend::{gen_rt_ty, match_rt},
6};
7
8/// Underlying buffer for a memory.
9gen_rt_ty! {
10    #[derive(Debug, Copy, Clone, derive_more::From)]
11    pub BackendMemoryBuffer<'a>(entities::memory::MemoryBuffer<'a>);
12}
13
14impl BackendMemoryBuffer<'_> {
15    #[allow(unused)]
16    #[inline]
17    pub(crate) fn read(&self, offset: u64, buf: &mut [u8]) -> Result<(), MemoryAccessError> {
18        match_rt!(on self => s {
19            s.read(offset, buf)
20        })
21    }
22
23    #[allow(unused)]
24    #[inline]
25    pub(crate) fn read_uninit<'b>(
26        &self,
27        offset: u64,
28        buf: &'b mut [MaybeUninit<u8>],
29    ) -> Result<&'b mut [u8], MemoryAccessError> {
30        match_rt!(on self => s {
31            s.read_uninit(offset, buf)
32        })
33    }
34
35    #[allow(unused)]
36    #[inline]
37    pub(crate) fn write(&self, offset: u64, data: &[u8]) -> Result<(), MemoryAccessError> {
38        match_rt!(on self => s {
39            s.write(offset, data)
40        })
41    }
42
43    #[inline]
44    pub(crate) fn len(&self) -> usize {
45        match self {
46            #[cfg(feature = "sys")]
47            Self::Sys(s) => s.len,
48
49            #[cfg(feature = "v8")]
50            Self::V8(s) => s.len,
51
52            #[cfg(feature = "js")]
53            Self::Js(s) => s.len(),
54        }
55    }
56
57    #[inline]
58    pub(crate) fn is_owned(&self) -> bool {
59        match self {
60            #[cfg(feature = "js")]
61            Self::Js(_) => true,
62            _ => false,
63        }
64    }
65
66    #[inline]
67    pub(crate) fn base(&self) -> *mut u8 {
68        match self {
69            #[cfg(feature = "sys")]
70            Self::Sys(s) => s.base,
71            #[cfg(feature = "v8")]
72            Self::V8(s) => s.base,
73            #[cfg(feature = "js")]
74            Self::Js(s) => panic!("js memory buffers do not support the `base` function!"),
75        }
76    }
77}
wasmer/entities/memory/buffer/inner.rs

wasmer/entities/memory/buffer/
inner.rs
