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♻️ Refactor heap usage (#6204)

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Aitor Moreno 2025-04-03 16:04:51 +02:00 • committed by GitHub
parent 9bc49e3381
commit cd731c3ad2
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5 changed files with 249 additions and 150 deletions
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20
render-wasm/src/mem.rs
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@ -1,5 +1,9 @@
use std::alloc::{alloc, Layout};
use std::ptr;
use std::sync::Mutex;
const LAYOUT_ALIGN: usize = 4;
static BUFFERU8: Mutex<Option<Box<Vec<u8>>>> = Mutex::new(None);
#[no_mangle]
@ -10,11 +14,17 @@ pub extern "C" fn alloc_bytes(len: usize) -> *mut u8 {
panic!("Bytes already allocated");
}
let mut new_buffer = Box::new(vec![0u8; len]);
let ptr = new_buffer.as_mut_ptr();
*guard = Some(new_buffer);
ptr
unsafe {
let layout = Layout::from_size_align_unchecked(len, LAYOUT_ALIGN);
let ptr = alloc(layout) as *mut u8;
if ptr.is_null() {
panic!("Allocation failed");
}
// TODO: Esto quizá se podría eliminar.
ptr::write_bytes(ptr, 0, len);
*guard = Some(Box::new(Vec::from_raw_parts(ptr, len, len)));
ptr
}
}
pub fn write_bytes(bytes: Vec<u8>) -> *mut u8 {