Method alloc

nodedb/src/bridge/slab.rs:89–103

Allocate a slab page and write data into it. Returns `Some(SlabId)` if a page is available and the data fits. Returns `None` if the pool is exhausted or the data exceeds page size.

(&mut self, data: &[u8])

    /// Returns `Some(SlabId)` if a page is available and the data fits.
    /// Returns `None` if the pool is exhausted or the data exceeds page size.
    pub fn alloc(&mut self, data: &[u8]) -> Option<SlabId> {
        if data.len() > self.page_size {
            return None; // Oversized — caller falls back to Arc<[u8]>.
        }
        let page_index = self.free_list.pop()?;
        let offset = page_index as usize * self.page_size;
        self.memory[offset..offset + data.len()].copy_from_slice(data);
        self.alloc_count += 1;

        Some(SlabId {
            core_id: self.core_id,
            page_index,
            len: data.len() as u32,
        })
    }

    /// Read data from a slab page by ID.
    ///