use nuklear_sys::{nk_handle, nk_size};
use std::mem;
use std::os::raw::c_void;
pub unsafe extern "C" fn alloc(_: nk_handle, _: *mut c_void, size: nk_size) -> *mut c_void {
trace!("allocating {} bytes", size);
let size_size = mem::size_of::<nk_size>();
let size = size + size_size as nk_size;
trace!("allocating {} / {} bytes", size_size, size);
let mut v: Vec<u8> = Vec::with_capacity(size as usize);
let ptr = v.as_mut_ptr();
mem::forget(v);
*(ptr as *mut nk_size) = size;
ptr.offset(size_size as isize) as *mut c_void
}
pub unsafe extern "C" fn free(_: nk_handle, old: *mut c_void) {
if old.is_null() {
return;
}
let size_size = mem::size_of::<nk_size>();
let old = old as *mut u8;
let old = old.offset(-(size_size as isize));
let old_size = *(old as *const nk_size);
trace!("deallocating {} bytes", old_size);
mem::drop(Vec::from_raw_parts(old, 0, old_size as usize));
}