producer generates the item and stores it in the buffer continuously. At the same time, consumer uses the data produced, removing it from the buffer from time to time.

As soon as consumer has picked up an object from the buffer, it will wake up producer, who will start to fill the buffer again.

Similarly, consumer will suspend if the buffer is empty. As soon as producer has downloaded the data into the buffer, consumer will wake up.

As you can see, even in this case, the use of the condition directive allows the threads to be properly synchronized.

The result that we get after a single run is as follows:

2019-08-05 14:33:44,285 Producer INFO total items 1
2019-08-05 14:33:44,786 Producer INFO total items 2
2019-08-05 14:33:45,286 Producer INFO total items 3
2019-08-05 14:33:45,786 Consumer INFO consumed 1 item
2019-08-05 14:33:45,787 Producer INFO total items 3
2019-08-05 14:33:46,287 Producer INFO total items 4
2019-08-05 14:33:46,788 Producer INFO total items 5
2019-08-05 14:33:47,289 Producer INFO total items 6
2019-08-05 14:33:47,787 Consumer INFO consumed 1 item
2019-08-05 14:33:47,790 Producer INFO total items 6
2019-08-05 14:33:48,291 Producer INFO total items 7
2019-08-05 14:33:48,792 Producer INFO total items 8
2019-08-05 14:33:49,293 Producer INFO total items 9
2019-08-05 14:33:49,788 Consumer INFO consumed 1 item
2019-08-05 14:33:49,794 Producer INFO total items 9
2019-08-05 14:33:50,294 Producer INFO total items 10
2019-08-05 14:33:50,795 Producer INFO items produced 10. Stopped
2019-08-05 14:33:51,789 Consumer INFO consumed 1 item
2019-08-05 14:33:51,790 Producer INFO total items 10
2019-08-05 14:33:52,290 Producer INFO items produced 10. Stopped
2019-08-05 14:33:53,790 Consumer INFO consumed 1 item
2019-08-05 14:33:53,790 Producer INFO total items 10
2019-08-05 14:33:54,291 Producer INFO items produced 10. Stopped
2019-08-05 14:33:55,790 Consumer INFO consumed 1 item
2019-08-05 14:33:55,791 Producer INFO total items 10
2019-08-05 14:33:56,291 Producer INFO items produced 10. Stopped
2019-08-05 14:33:57,791 Consumer INFO consumed 1 item
2019-08-05 14:33:57,791 Producer INFO total items 10
2019-08-05 14:33:58,292 Producer INFO items produced 10. Stopped
2019-08-05 14:33:59,791 Consumer INFO consumed 1 item
2019-08-05 14:33:59,791 Producer INFO total items 10
2019-08-05 14:34:00,292 Producer INFO items produced 10. Stopped
2019-08-05 14:34:01,791 Consumer INFO consumed 1 item
2019-08-05 14:34:01,791 Producer INFO total items 10
2019-08-05 14:34:02,291 Producer INFO items produced 10. Stopped
2019-08-05 14:34:03,791 Consumer INFO consumed 1 item
2019-08-05 14:34:03,792 Producer INFO total items 10
2019-08-05 14:34:05,792 Consumer INFO consumed 1 item
2019-08-05 14:34:07,793 Consumer INFO consumed 1 item
2019-08-05 14:34:09,794 Consumer INFO consumed 1 item
2019-08-05 14:34:11,795 Consumer INFO consumed 1 item
2019-08-05 14:34:13,795 Consumer INFO consumed 1 item
2019-08-05 14:34:15,833 Consumer INFO consumed 1 item
2019-08-05 14:34:17,833 Consumer INFO consumed 1 item
2019-08-05 14:34:19,833 Consumer INFO consumed 1 item
2019-08-05 14:34:21,834 Consumer INFO consumed 1 item
2019-08-05 14:34:23,835 Consumer INFO consumed 1 item