Function lean_alloc_small_object

src/lib.rs:156–186

(sz: c_uint)

#[inline]
pub unsafe fn lean_alloc_small_object(sz: c_uint) -> *mut lean_object {
    if LEAN_SMALL_ALLOCATOR {
        let sz = lean_align(sz as usize, LEAN_OBJECT_SIZE_DELTA) as c_uint;
        let slot_idx = lean_get_slot_idx(sz);
        debug_assert!(sz <= LEAN_MAX_SMALL_OBJECT_SIZE);
        lean_alloc_small(sz, slot_idx).cast()
    } else {
        lean_inc_heartbeat();
        if LEAN_MIMALLOC {
            // HACK: emulate behavior of small allocator to avoid `leangz` breakage for now
            let sz = lean_align(sz as usize, LEAN_OBJECT_SIZE_DELTA) as c_uint;
            #[cfg(feature = "libmimalloc-sys")]
            let mem = libmimalloc_sys::mi_malloc_small(sz as usize);
            #[cfg(not(feature = "libmimalloc-sys"))]
            let mem = core::ptr::null_mut::<c_void>();
            if mem.is_null() {
                lean_internal_panic_out_of_memory()
            }
            let o = mem.cast::<lean_object>();
            (*o).m_cs_sz = sz as u16;
            o
        } else {
            let mem = libc::malloc(size_of::<usize>() + sz as usize) as *mut usize;
            if mem.is_null() {
                lean_internal_panic_out_of_memory()
            }
            *mem = sz as usize;
            mem.add(1).cast()
        }
    }
}

#[inline]
pub unsafe fn lean_alloc_ctor_memory(sz: c_uint) -> *mut lean_object {