} stopwatch.stop(); System.out.println(stopwatch.prettyPrint()); } } 结果 task -2 is running task-2 is over task-4 is running task-4 is over task-1 is running task-1 is over task-3 task-3 is running task-3 is over task-4 is running task-4 is over task-7 is running task-7 is over task -2 is running task-2 is over task-6 is running task-6 is over task-1 is running task-1 is over task-8 -2 is running task-2 is over task-4 is over task-5 is running task-1 is running task-8 is running task
droppable = false, jmsXGroupFirstForConsumer = false, text = 8 message.} 14:40:20.776 [ActiveMQ Session Task droppable = false, jmsXGroupFirstForConsumer = false, text = 9 message.} 14:40:20.776 [ActiveMQ Session Task droppable = false, jmsXGroupFirstForConsumer = false, text = 10 message.} 14:40:20.777 [ActiveMQ Session Task droppable = false, jmsXGroupFirstForConsumer = false, text = 15 message.} 14:40:20.781 [ActiveMQ Session Task droppable = false, jmsXGroupFirstForConsumer = false, text = 16 message.} 14:40:20.782 [ActiveMQ Session Task
然后在Task-1里Spawn了另一个异步任务Task-2,Task-2被放到了Processor-1的LIFO Slot中。 因为Task-1继续运行的条件依赖于Task-2,所以Task-1被阻塞了。 而且Tokio的协程是非抢占式的,在Task-1没有遇到.await前无法让出CPU,Processor-1无法去执行Task-2。 又因为Task-2在Processor-1的LIFO Slot中,其他的Processor也无法偷取Task-2执行。于是,Task-2永远也不会有机会被执行,这两个Task在循环等待中就永远卡死了。 -1就可以从LIFO Slot取出Task-2执行了,循环等待也就被打破了。
"毫秒"); } 由于默认线程池的核心线程数是8,所以3个任务会同时开始执行,日志输出是这样的: 2021-09-15 00:30:14.819 INFO 77614 --- [ task com.didispace.chapter76.AsyncTasks : 开始做任务一 2021-09-15 00:30:15.491 INFO 77614 --- [ task com.didispace.chapter76.AsyncTasks : 开始做任务一 2021-09-15 00:31:50.013 INFO 77985 --- [ task com.didispace.chapter76.AsyncTasks : 开始做任务三 2021-09-15 00:31:55.880 INFO 77985 --- [ task
:06.313 E/task: task-0: onPreExecute 16:42:06.316 E/task: task-1: onPreExecute 16:42:06.316 E/task: task AsyncTask #2,5,main] 16:42:17.712 E/task: task-1: onPostExecute 44850, 2000000 16:42:17.715 E/task: task -2: doInBackground Thread[AsyncTask #3,5,main] 16:42:22.706 E/task: task-2: onPostExecute 44850, 3000000 :26.867 E/task: task-0: onPreExecute 17:26:26.870 E/task: task-1: onPreExecute 17:26:26.870 E/task: task :26.875 E/task: task-8: onPreExecute 17:26:26.875 E/task: task-9: onPreExecute 17:26:26.875 E/task: task
+ lastname + Thread.currentThread().getName()); return username; } 测试结果如下: 可以看到task-1获取不到结果,task
com.didispace.chapter75.AsyncTasks : 开始做任务三 2021-09-11 23:33:38.842 INFO 95891 --- [ task com.didispace.chapter75.AsyncTasks : 开始做任务一 2021-09-11 23:33:45.155 INFO 95891 --- [ task
cancelled: True shielded was cancelled shielded: <Future cancelled> task: <Task finished name='<em>Task-2</em>
c.f.s.a.s.impl.TestAsyncServiceImpl : 计算任务-150 2020-11-11 22:27:05.152 INFO 18888 --- [ task
image.png 如果此时partition-3被下掉了,则task-2会空余出来 注意由于task并行的互不干扰的处理自己对应的task,当task数大于partition数的时候,多出来的task
Current Thread : task-1 Fixed Delay Task : The time is now 14:27:32 Current Thread : task-2 Fixed Delay
running task 8 is running task 9 is running > Task-9, <coroutine object task_coroutine at 0x10e186e30> > Task
runningtask 8 is runningtask 9 is running> Task-9, <coroutine object task_coroutine at 0x10e186e30>> Task
creatingThread08Service.call(); creatingThread08Service.call(); } } 运行结果如下: task-3 is running task
Task exception was never retrieved future: <Task finished name='<em>Task-2</em>' coro=<down_img() done, defined
: INFO 12360 --- [ task-2] c.h.s.t.t.ThreadpoolApplicationTests : threadPoolTaskExecutor
:121: task start at Task-1 run success 2021-07-07 16:13:06 rateLimit_test.go:121: task start at Task
所以,线程名称是 task-1 , task-2, task-3 , task-4… 2022-03-02 22:33:47.007 [http-nio-8080-exec-6] INFO com.artisan.controller.AsyncController
__name__ == '__main__': asyncio.run(main())系统返回:job1开始 job2开始 job1结束 ({<Task finished name='<em>Task</em>
name__ == '__main__': asyncio.run(main()) 系统返回: job1开始 job2开始 job1结束 ({<Task finished name='<em>Task</em>