Есть ли в WorkManager ограничение на количество заданий, которые выполняются одновременно?
Очень простой пример:
- Нажмите кнопку, создав 10 разовых заданий
- Поставить их всех в очередь
- 3 задания выполняются одновременно, вместо всех 10, как ожидалось
class MainActivity: AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
queue.setOnClickListener {
val jobs = mutableListOf<OneTimeWorkRequest>()
for( i in 1..10 ) {
jobs += OneTimeWorkRequestBuilder<MyWorker>()
.setInputData(workDataOf("key" to i))
.build()
}
WorkManager.getInstance().enqueue(jobs)
}
}
}
class MyWorker: Worker() {
override fun doWork(): Result {
val jobId = inputData.getInt("key", -1)
Log.d("worker", "starting job: $jobId")
Completable.timer(10, SECONDS).blockingGet()
Log.d("worker", "job finished: $jobId")
return SUCCESS
}
}
И вывод:
08-30 14:03:10.392 9825 9855 D worker : starting job: 2
08-30 14:03:10.396 9825 9856 D worker : starting job: 3
08-30 14:03:10.400 9825 9854 D worker : starting job: 1
08-30 14:03:20.421 9825 9855 D worker : job finished: 2
08-30 14:03:20.421 9825 9856 D worker : job finished: 3
08-30 14:03:20.421 9825 9854 D worker : job finished: 1
08-30 14:03:20.442 9825 9856 D worker : starting job: 4
08-30 14:03:20.448 9825 9854 D worker : starting job: 5
08-30 14:03:20.450 9825 9855 D worker : starting job: 6
08-30 14:03:30.444 9825 9856 D worker : job finished: 4
08-30 14:03:30.449 9825 9854 D worker : job finished: 5
08-30 14:03:30.451 9825 9855 D worker : job finished: 6
08-30 14:03:30.474 9825 9856 D worker : starting job: 7
08-30 14:03:30.477 9825 9855 D worker : starting job: 8
08-30 14:03:30.480 9825 9854 D worker : starting job: 9
08-30 14:03:40.476 9825 9856 D worker : job finished: 7
08-30 14:03:40.478 9825 9855 D worker : job finished: 8
08-30 14:03:40.481 9825 9854 D worker : job finished: 9
08-30 14:03:40.497 9825 9856 D worker : starting job: 10
08-30 14:03:50.500 9825 9856 D worker : job finished: 10