package com.genersoft.iot.vmp.conf;
|
|
import org.springframework.context.annotation.Bean;
|
import org.springframework.context.annotation.Configuration;
|
import org.springframework.scheduling.annotation.EnableAsync;
|
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
|
|
import java.util.concurrent.ThreadPoolExecutor;
|
|
/**
|
* ThreadPoolTask 配置类
|
* @author lin
|
*/
|
@Configuration
|
@EnableAsync(proxyTargetClass = true)
|
public class ThreadPoolTaskConfig {
|
|
public static final int cpuNum = Runtime.getRuntime().availableProcessors();
|
|
/**
|
* 默认情况下，在创建了线程池后，线程池中的线程数为0，当有任务来之后，就会创建一个线程去执行任务，
|
* 当线程池中的线程数目达到corePoolSize后，就会把到达的任务放到缓存队列当中；
|
* 当队列满了，就继续创建线程，当线程数量大于等于maxPoolSize后，开始使用拒绝策略拒绝
|
*/
|
|
/**
|
* 核心线程数（默认线程数）
|
*/
|
private static final int corePoolSize = cpuNum;
|
/**
|
* 最大线程数
|
*/
|
private static final int maxPoolSize = cpuNum*2;
|
/**
|
* 允许线程空闲时间（单位：默认为秒）
|
*/
|
private static final int keepAliveTime = 30;
|
|
/**
|
* 缓冲队列大小
|
*/
|
private static final int queueCapacity = 10000;
|
/**
|
* 线程池名前缀
|
*/
|
private static final String threadNamePrefix = "wvp-";
|
|
/**
|
*
|
* @return
|
*/
|
@Bean("taskExecutor") // bean的名称，默认为首字母小写的方法名
|
public ThreadPoolTaskExecutor taskExecutor() {
|
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
|
executor.setCorePoolSize(corePoolSize);
|
executor.setMaxPoolSize(maxPoolSize);
|
executor.setQueueCapacity(queueCapacity);
|
executor.setKeepAliveSeconds(keepAliveTime);
|
executor.setThreadNamePrefix(threadNamePrefix);
|
|
// 线程池对拒绝任务的处理策略
|
// CallerRunsPolicy：由调用线程（提交任务的线程）处理该任务
|
executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
|
// 初始化
|
executor.initialize();
|
return executor;
|
}
|
}
|
