vendor/tokio/src/macros/loom.rs

   1 macro_rules! if_loom {
   2     ($($t:tt)*) => {{
   3         #[cfg(loom)]
   4         const LOOM: bool = true;
   5         #[cfg(not(loom))]
   6         const LOOM: bool = false;
   7
   8         if LOOM {
   9             $($t)*
  10         }
  11     }}
  12 }