/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is dual-licensed under either the MIT license found in the
* LICENSE-MIT file in the root directory of this source tree or the Apache
* License, Version 2.0 found in the LICENSE-APACHE file in the root directory
* of this source tree. You may select, at your option, one of the
* above-listed licenses.
*/
//! (Almost) lock-free insertion only hashtable.
//!
//! Lookups are performed without locking (wait-free).
//! Insertions are performed with a shared lock (lock-free unless resize is needed).
//! Resizing is performed with an exclusive lock.
//!
//! Entries are never removed (until the table is dropped).