Lib.rs

垃圾回收的“内部化”字符串。

内部化是一种使许多相同事物共享相同底层资源的过程。此crate引入了两种由Refuse垃圾收集器驱动的类型

• RootString：一个类似于Root<String>的类型，确保所有相同精确字节序列的实例都引用相同的分配。
• RefString：一个指向RootString的Ref<String>类型。

use refuse::CollectionGuard;
use refuse_pool::{RefString, RootString};

let a = RootString::from("a");
let a_again = RootString::from(String::from("a"));

// Both a and a_again point to the same underlying storage.
assert_eq!(a.root_count(), 2);
// Comparing two RootStrings is cheap.
assert_eq!(a, a_again);

// a_ref can be used to gain a reference to a string,
// but only until the string is unreachable.
let a_ref = a.downgrade();

let mut guard = CollectionGuard::acquire();
assert_eq!(a_ref.load(&guard), Some("a"));

drop(a);
drop(a_again);
guard.collect();
assert_eq!(a_ref.load(&guard), None);