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use crate::alloc;
use alloc::{Alloc, AllocErr};
use std::alloc::Layout;
#[derive(Debug)]
pub struct BPFAllocator {
heap: Vec<u8>,
pos: usize,
}
impl BPFAllocator {
pub fn new(heap: Vec<u8>) -> Self {
Self { heap, pos: 0 }
}
}
impl Alloc for BPFAllocator {
fn alloc(&mut self, layout: Layout) -> Result<*mut u8, AllocErr> {
if self.pos + layout.size() <= self.heap.len() {
let ptr = unsafe { self.heap.as_mut_ptr().add(self.pos) };
self.pos += layout.size();
Ok(ptr)
} else {
Err(AllocErr)
}
}
fn dealloc(&mut self, _ptr: *mut u8, _layout: Layout) {
}
}