Hello everyone, I'm new to java and now I really need your help to finish this project about Producer-Consumer problem. This one is kind of weird and I totally have no idea what it is talking about.

Programming Task

In the classic producer-consumer problem, a producer thread inserts items into a buffer, and a consumer thread consumes items from the buffer simultaneously. In this project, you are required to use Java Threads to solve an N- producer-M-consumer problem by generating N producer threads and M consumer threads to simultaneously access the buffer.

In specific, your program should satisfy the following requirements:

(1) Your program should accept 4 input parameters, namely “the number of producer threads”, “the number of consumer threads”, “the size of the buffer”, and “the number of items to be produced”. For example, the following command starts your program with 4 producer threads, 5 consumer threads, a buffer of 10 items, and generate 1000 items in total.
$ ./producer-consumer 4 5 10 1000

(2) Similar to the producer-consumer problem, a buffer is maintained in your program and shared among all producers and consumers. Each item in buffer is an integer.

(3) Each producer thread generates a random integer each time, inserts it into the buffer, increments a counter, num_produced, which is shared by all producers to track how many items being created, and records the time and the item being produced in an event log. The event log should record the events in the order of timestamps.

(4) Each consumer thread consumes the items of the buffer in the First-In-First-Out (FIFO) order, meaning that if item A is inserted into the buffer earlier than B, item A should be consumed earlier than B, increments a counter, num_consumed, which is shared by all consumers to track how many blocks are consumed, and record the time and the item being consumed in an event log. The event log should record the events in the order of timestamps.

(5) Use either semaphore or mutex lock (spinlock) to synchronize threads working on the shared resources in your program.

(6) When the specified number of items are produced and consumed, your program should exit and generate the following output: (i) print the total number of produced items, (ii) print the total number of consumed items, and (iii) output the even log files, named “producer-event.log” and “consumder-event.log”. Each record of the log file should be formatted as the following:
<Timestamp (in nanoseconds)> <Thread type (“Producer” or “Consumer”)> <Thread ID> <Buffer Entry Index> <Item>.

Basically, each record logs when and which thread produced an item into or consumed an item from an entry in the shared buffer.


PLEASE HELP ME!