Module backoff

This file was modified based on the following program in Crossbeam-Utils.

Source: <https://github.com/crossbeam-rs/crossbeam/blob/master/crossbeam-utils/src/backoff.rs>

Copyright & License:

• The Crossbeam Project Developers
• The MIT License (MIT) or Apache License 2.0 <https://opensource.org/licenses/MIT> ‘https://www.apache.org/licenses/LICENSE-2.0’

Structs

Backoff

Makes the current thread to wait in the short time.