src/liballoc/alloc/tests.rs

   1 use super::*;
   2
   3 extern crate test;
   4 use crate::boxed::Box;
   5 use test::Bencher;
   6
   7 #[test]
   8 fn allocate_zeroed() {
   9     unsafe {
  10         let layout = Layout::from_size_align(1024, 1).unwrap();
  11         let memory = Global
  12             .alloc(layout.clone(), AllocInit::Zeroed)
  13             .unwrap_or_else(|_| handle_alloc_error(layout));
  14
  15         let mut i = memory.ptr.cast::<u8>().as_ptr();
  16         let end = i.add(layout.size());
  17         while i < end {
  18             assert_eq!(*i, 0);
  19             i = i.offset(1);
  20         }
  21         Global.dealloc(memory.ptr, layout);
  22     }
  23 }
  24
  25 #[bench]
  26 #[cfg_attr(miri, ignore)] // Miri does not support benchmarks
  27 fn alloc_owned_small(b: &mut Bencher) {
  28     b.iter(|| {
  29         let _: Box<_> = box 10;
  30     })
  31 }