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Who is the producer in the producer-consumer problem?
There is one Producer in the producer-consumer problem, Producer is producing some items, whereas there is one Consumer that is consuming the items produced by the Producer. The same memory buffer is shared by both producers and consumers which is of fixed-size.
What is the producer / consumer problem in concurrent programming?
The Producer/Consumer Problem. This problem is one of the small collection of standard, well-known problems in concurrent programming: a finite-size buffer and two classes of threads, producers and consumers, put items into the buffer (producers) and take items out of the buffer (consumers).
Which is an example of a producer / consumer queue?
Example 4-11has two such queues, one (less) for producers waiting for a slot in the buffer, and the other (more) for consumers waiting for a buffer slot containing information. The example also has a mutex, as the data structure describing the buffer must be accessed by only one thread at a time.
How does the producer try to wake up the consumer?
The producer creates an item, puts it into the buffer, and increases itemCount. Because the buffer was empty prior to the last addition, the producer tries to wake up the consumer. Unfortunately, the consumer wasn’t yet sleeping, and the wakeup call is lost.
What’s the difference between consumer and producer work?
Producer work is to produce data or items and put in buffer. Consumer work is to remove data from buffer and consume it. We have to make sure that producer do not produce data when buffer is full and consumer do not remove data when buffer is empty.
What are the roles of producer and consumer in Java?
The problem describes two processes, the producer and the consumer, which share a common, fixed-size buffer used as a queue. The producer’s job is to generate data, put it into the buffer, and start again.
When do producer and consumer go to sleep?
The producer should go to sleep when buffer is full. Next time when consumer removes data it notifies the producer and producer starts producing data again. The consumer should go to sleep when buffer is empty. Next time when producer add data it notifies the consumer and consumer starts consuming data.