?一个大小为3的缓冲区，初始为空
?2个生产者
–随机等待一段时间，往缓冲区添加数据，
–若缓冲区已满，等待消费者取走数据后再添加
–重复6次
?3个消费者
–随机等待一段时间，从缓冲区读取数据
–若缓冲区为空，等待生产者添加数据后再读取
–重复4次
?显示每次添加和读取数据的时间及缓冲区的状态(a buffer size of 3, initially empty
2 producers
Random waiting for a period of time, adding data to the buffer area.
If the buffer is full, wait for the consumer to pick up the data and add it later.
- repeat 6 times
3 consumers
Randomly waiting for a period of time to read data from the buffer.
If the buffer is empty, wait for producers to add data before reading. repeat 4 times
Display the time of adding and reading data every time and the state of the buffer.)