Commit 512b0cc8f5606f08b93afb154f0cffd92b93cac8
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Merge pull request #847 from xu-bin-bin/wvp-28181-2.0
"@schedule"是Spring框架提供的一种定时任务执行机制，默认情况下它是单线程执行，将其修改为支持多线程。
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src/main/java/com/genersoft/iot/vmp/conf/ScheduleConfig.java
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| 1 | +package com.genersoft.iot.vmp.conf; | ||
| 2 | + | ||
| 3 | +import org.apache.commons.lang3.concurrent.BasicThreadFactory; | ||
| 4 | +import org.springframework.context.annotation.Configuration; | ||
| 5 | +import org.springframework.scheduling.annotation.SchedulingConfigurer; | ||
| 6 | +import org.springframework.scheduling.config.ScheduledTaskRegistrar; | ||
| 7 | + | ||
| 8 | +import java.util.concurrent.ScheduledThreadPoolExecutor; | ||
| 9 | +import java.util.concurrent.ThreadPoolExecutor; | ||
| 10 | + | ||
| 11 | +/** | ||
| 12 | + * "@Scheduled"是Spring框架提供的一种定时任务执行机制，默认情况下它是单线程的，在同时执行多个定时任务时可能会出现阻塞和性能问题。 | ||
| 13 | + * 为了解决这种单线程瓶颈问题，可以将定时任务的执行机制改为支持多线程 | ||
| 14 | + */ | ||
| 15 | +@Configuration | ||
| 16 | +public class ScheduleConfig implements SchedulingConfigurer { | ||
| 17 | + | ||
| 18 | + public static final int cpuNum = Runtime.getRuntime().availableProcessors(); | ||
| 19 | + | ||
| 20 | + private static final int corePoolSize = cpuNum; | ||
| 21 | + | ||
| 22 | + private static final String threadNamePrefix = "scheduled-task-pool-%d"; | ||
| 23 | + | ||
| 24 | + @Override | ||
| 25 | + public void configureTasks(ScheduledTaskRegistrar taskRegistrar) { | ||
| 26 | + taskRegistrar.setScheduler(new ScheduledThreadPoolExecutor(corePoolSize, | ||
| 27 | + new BasicThreadFactory.Builder().namingPattern(threadNamePrefix).daemon(true).build(), | ||
| 28 | + new ThreadPoolExecutor.CallerRunsPolicy())); | ||
| 29 | + } | ||
| 30 | +} |