use std::{alloc::Layout, ptr::NonNull};
pub struct MemoryPool {
ptr: NonNull<u8>,
layout: Layout,
}
impl MemoryPool {
pub fn new(size: usize) -> Self {
let layout = Layout::from_size_align(size, 4096).unwrap();
let ptr = NonNull::new(unsafe { std::alloc::alloc_zeroed(layout) }).unwrap();
Self { ptr, layout }
}
pub fn as_slice(&mut self) -> &mut [u8] {
unsafe { core::slice::from_raw_parts_mut(self.ptr.as_ptr(), self.layout.size()) }
}
}
impl Drop for MemoryPool {
fn drop(&mut self) {
unsafe { std::alloc::dealloc(self.ptr.as_ptr(), self.layout) };
}
}