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|
use countme::{get, Count};
#[derive(Default)]
struct Foo {
_c: Count<Self>,
}
#[derive(Default)]
struct Bar {
_c: Count<Self>,
_x: i32,
}
mod deeply {
pub(crate) mod nested {
pub(crate) mod module {
use countme::Count;
#[derive(Default)]
pub(crate) struct Quux {
_c: Count<Self>,
}
}
}
}
fn main() {
countme::enable(true);
let t = std::time::Instant::now();
let n = 6;
let m = 2_000_000;
for _ in 0..n {
for _ in 0..m {
Foo::default();
}
let mut xs = Vec::with_capacity(m);
for _ in 0..m {
xs.push(Bar::default())
}
for _ in 0..m {
deeply::nested::module::Quux::default();
}
let fs = [
|| drop(Foo::default()),
|| drop(Bar::default()),
|| drop(deeply::nested::module::Quux::default()),
|| {
#[derive(Default)]
struct Local(Count<Self>);
Local::default();
},
];
for i in 0..m {
fs[i % 4]();
}
}
let foo = get::<Foo>();
assert_eq!(foo.total, m * n + (m * n / 4));
assert_eq!(foo.max_live, 1);
assert_eq!(foo.live, 0);
let bar = get::<Bar>();
assert_eq!(bar.total, m * n + (m * n / 4));
// FIXME: why +1? This seems like a bug
// overreporting by 1 is not significant, but anyway
assert_eq!(bar.max_live, m + 1);
assert_eq!(bar.live, 0);
println!("{:?}", t.elapsed());
}
|
