New file |
| | |
| | | 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; |
| | | |
| | | @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 = 500; |
| | | /** |
| | | * 线程池名前缀 |
| | | */ |
| | | private static final String threadNamePrefix = "wvp-sip-handle-"; |
| | | |
| | | @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; |
| | | } |
| | | } |