| 1 | use std::time::Instant; |
| 2 | |
| 3 | pub struct ScopeTimer { |
| 4 | #[allow(dead_code)] |
| 5 | start: Instant, |
| 6 | #[allow(dead_code)] |
| 7 | name: &'static str, |
| 8 | } |
| 9 | |
| 10 | impl ScopeTimer { |
| 11 | pub fn new(name: &'static str) -> Self { |
| 12 | ScopeTimer { start: Instant::now(), name: name } |
| 13 | } |
| 14 | } |
| 15 | |
| 16 | #[cfg(debug_assertions)] |
| 17 | impl Drop for ScopeTimer { |
| 18 | fn drop(&mut self) { |
| 19 | println!("{} took {:?}", self.name, self.start.elapsed()); |
| 20 | } |
| 21 | } |
| 22 | |
| 23 | #[macro_export] |
| 24 | macro_rules! time_scope { |
| 25 | () => { |
| 26 | use common::ScopeTimer; |
| 27 | let _magical_scope_timer_ = ScopeTimer::new("scope"); |
| 28 | }; |
| 29 | ( $name:expr ) => { |
| 30 | use common::ScopeTimer; |
| 31 | let _magical_scope_timer_ = ScopeTimer::new($name); |
| 32 | }; |
| 33 | } |