Helpers for Multi-threading development
- Producer/Consumer
Producer<String> producer = Producer.create(String.class, new Consumer<String>() {
public void consume(String item) {
System.out.println(Thread.currentThread().getId() + " : item = [" + item + "]");
}
});
for (int i = 0; i < 10; i++){
producer.submit("test_" + i);
}
producer.stop();
- ParallelRunner
Builds on Producer/Consumer to provide an easy way to run multiple tasks in parallel. When all tasks complete, a callback is called.
private static class SampleRunnable implements Runnable{
private int id = 0;
public SampleRunnable(int id) {
this.id = id;
}
@Override
public void run() {
System.out.println("run with id : " + id);
}
}
ParallelRunner runner = ParallelRunner.builder().withThreads(3).build();
runner.start();
// async, method returns as soon as all tasks are submitted to execution,
// but have not necessarily completed.
runner.run(new Runnable() {
@Override
public void run() {
System.out.println("onComplete");
}
},
new SampleRunnable(1),
new SampleRunnable(2),
new SampleRunnable(3),
new SampleRunnable(4)
);
System.out.println("Maybe called before callback");
runner.stop();
ParallelRunner runner = ParallelRunner.builder().withThreads(3).build();
runner.start();
// without a callback
runner.runSync(
new SampleRunnable(1),
new SampleRunnable(2),
new SampleRunnable(3),
new SampleRunnable(4)
);
System.out.println("called when all tasks complete");
runner.stop();