fix: replate deprecated criterion::black_box

Use std::hint::black_box instead

Signed-off-by: Babis Chalios <[email protected]>

Author: bchalios

benches/guest_memory.rs

@@ -3,7 +3,9 @@
 // SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
 #![cfg(feature = "backend-mmap")]
 
-pub use criterion::{black_box, Criterion};
+use std::hint::black_box;
+
+pub use criterion::Criterion;
 
 use vm_memory::bitmap::Bitmap;
 use vm_memory::{GuestAddress, GuestMemory, GuestMemoryMmap};

benches/main.rs

@@ -4,7 +4,7 @@
 
 extern crate criterion;
 
-pub use criterion::{black_box, criterion_group, criterion_main, Criterion};
+pub use criterion::{criterion_group, criterion_main, Criterion};
 #[cfg(feature = "backend-mmap")]
 use vm_memory::{GuestAddress, GuestMemoryMmap};
 

benches/mmap/mod.rs

@@ -8,10 +8,11 @@ extern crate criterion;
 extern crate vm_memory;
 
 use std::fs::{File, OpenOptions};
+use std::hint::black_box;
 use std::mem::size_of;
 use std::path::Path;
 
-use criterion::{black_box, Criterion};
+use criterion::Criterion;
 
 use vm_memory::{ByteValued, Bytes, GuestAddress, GuestMemory};
 

benches/volatile.rs

@@ -2,7 +2,9 @@
 //
 // SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
 
-pub use criterion::{black_box, Criterion};
+use std::hint::black_box;
+
+pub use criterion::Criterion;
 use vm_memory::volatile_memory::VolatileMemory;
 use vm_memory::VolatileSlice;