#[cfg(feature = "cache-efficiency-debug")]mod impl_ { /// A helper to collect useful information about cache efficiency. pub struct Debug { owner: String, hits: usize, puts: usize, misses: usize, } impl Debug { /// Create a new instance #[inline] pub fn new(owner: String) -> Self { Debug { owner, hits: 0, puts: 0, misses: 0, } } /// Count cache insertions #[inline] pub fn put(&mut self) { self.puts += 1; } /// Count hits #[inline] pub fn hit(&mut self) { self.hits += 1; } /// Count misses #[inline] pub fn miss(&mut self) { self.misses += 1; } } impl Drop for Debug { fn drop(&mut self) { let hits = self.hits; let misses = self.misses; let ratio = hits as f32 / misses as f32; eprintln!( "{}[{:0x}]: {} / {} (hits/misses) = {:.02}%, puts = {}", self.owner, std::ptr::from_ref(self) as usize, hits, misses, ratio * 100.0, self.puts ); } }}#[cfg(not(feature = "cache-efficiency-debug"))]mod impl_ { /// The disabled, zero size do-nothing equivalent pub struct Debug; impl Debug { /// Create a new instance #[inline] pub fn new(_owner: String) -> Self { Debug } /// noop pub fn put(&mut self) {} /// noop pub fn hit(&mut self) {} /// noop pub fn miss(&mut self) {} }} pub use impl_::Debug;
#[cfg(feature = "cache-efficiency-debug")]
mod impl_ {
/// A helper to collect useful information about cache efficiency.
pub struct Debug {
owner: String,
hits: usize,
puts: usize,
misses: usize,
}
impl Debug {
/// Create a new instance
#[inline]
pub fn new(owner: String) -> Self {
Debug {
owner,
hits: 0,
puts: 0,
misses: 0,
}
}
/// Count cache insertions
#[inline]
pub fn put(&mut self) {
self.puts += 1;
}
/// Count hits
#[inline]
pub fn hit(&mut self) {
self.hits += 1;
}
/// Count misses
#[inline]
pub fn miss(&mut self) {
self.misses += 1;
}
}
impl Drop for Debug {
fn drop(&mut self) {
let hits = self.hits;
let misses = self.misses;
let ratio = hits as f32 / misses as f32;
eprintln!(
"{}[{:0x}]: {} / {} (hits/misses) = {:.02}%, puts = {}",
self.owner,
std::ptr::from_ref(self) as usize,
hits,
misses,
ratio * 100.0,
self.puts
);
}
}
}
#[cfg(not(feature = "cache-efficiency-debug"))]
mod impl_ {
/// The disabled, zero size do-nothing equivalent
pub struct Debug;
impl Debug {
/// Create a new instance
#[inline]
pub fn new(_owner: String) -> Self {
Debug
}
/// noop
pub fn put(&mut self) {}
/// noop
pub fn hit(&mut self) {}
/// noop
pub fn miss(&mut self) {}
}
}
pub use impl_::Debug;