88 lines
2.2 KiB
Java
88 lines
2.2 KiB
Java
/*
|
|
* Copyright 2020 The Netty Project
|
|
*
|
|
* The Netty Project licenses this file to you 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:
|
|
*
|
|
* https://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 io.net5.buffer;
|
|
|
|
/**
|
|
* Expose metrics for an SizeClasses.
|
|
*/
|
|
public interface SizeClassesMetric {
|
|
|
|
/**
|
|
* Computes size from lookup table according to sizeIdx.
|
|
*
|
|
* @return size
|
|
*/
|
|
int sizeIdx2size(int sizeIdx);
|
|
|
|
/**
|
|
* Computes size according to sizeIdx.
|
|
*
|
|
* @return size
|
|
*/
|
|
int sizeIdx2sizeCompute(int sizeIdx);
|
|
|
|
/**
|
|
* Computes size from lookup table according to pageIdx.
|
|
*
|
|
* @return size which is multiples of pageSize.
|
|
*/
|
|
long pageIdx2size(int pageIdx);
|
|
|
|
/**
|
|
* Computes size according to pageIdx.
|
|
*
|
|
* @return size which is multiples of pageSize
|
|
*/
|
|
long pageIdx2sizeCompute(int pageIdx);
|
|
|
|
/**
|
|
* Normalizes request size up to the nearest size class.
|
|
*
|
|
* @param size request size
|
|
*
|
|
* @return sizeIdx of the size class
|
|
*/
|
|
int size2SizeIdx(int size);
|
|
|
|
/**
|
|
* Normalizes request size up to the nearest pageSize class.
|
|
*
|
|
* @param pages multiples of pageSizes
|
|
*
|
|
* @return pageIdx of the pageSize class
|
|
*/
|
|
int pages2pageIdx(int pages);
|
|
|
|
/**
|
|
* Normalizes request size down to the nearest pageSize class.
|
|
*
|
|
* @param pages multiples of pageSizes
|
|
*
|
|
* @return pageIdx of the pageSize class
|
|
*/
|
|
int pages2pageIdxFloor(int pages);
|
|
|
|
/**
|
|
* Normalizes usable size that would result from allocating an object with the
|
|
* specified size and alignment.
|
|
*
|
|
* @param size request size
|
|
*
|
|
* @return normalized size
|
|
*/
|
|
int normalizeSize(int size);
|
|
}
|