package com.xjf.repository.utils;
/**
* SystemUtils
*
*/
public class SystemUtils {
public static final int DEFAULT_THREAD_POOL_SIZE = getDefaultThreadPoolSize();
private SystemUtils() {
throw new AssertionError();
}
/**
*
* @return 返回线程池的个数
*/
public static int getDefaultThreadPoolSize() {
return getDefaultThreadPoolSize(8);
}
/**
* get recommend default thread pool size
*
* @param max 最大线程数
* @return if 2 * availableProcessors + 1 less than max, return it, else return max;
*/
public static int getDefaultThreadPoolSize(int max) {
int availableProcessors = 2 * Runtime.getRuntime().availableProcessors() + 1;
return availableProcessors > max ? max : availableProcessors;
}
}