import java.nio.ByteBuffer;

public class DirectBufferTest {
  private static int NUM_THREADS = 4;
  
  public static void main(String[] args) throws InterruptedException {
    for(int i = 0; i < NUM_THREADS; i++) {
      Thread thread = new Thread("Test thread " + i) {
        public void run() {
          int i = 0;
          try {
            while(true) {
              ByteBuffer bb = ByteBuffer.allocateDirect(1024 * 1024);
              i++;
            }
          } catch(Throwable t) {
            System.err.println("Thread " + Thread.currentThread().getName() + " got an OOM on iteration " + i);
            t.printStackTrace();
            System.exit(1);
          }
        }
      };
      thread.start();
    }
    
    Thread.sleep(3600 * 1000);
    System.out.println("No errors after 60 seconds.");
    System.exit(0);
  }
}