/*
* Copyright 2016-present Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package com.facebook.buck.util.concurrent;
/** How to handle fairness when acquiring the semaphore. */
public enum ResourceAllocationFairness {
/**
* Make acquisitions happen in order. This may mean a high-permit count acquisition can block
* smaller ones queued behind it that could otherwise grab the semaphore.
*/
FAIR,
/**
* Move lower-permit count acquisitions that can acquire the lock ahead of high-count ones that
* are blocked due to size.
*/
FAST,
}