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Producer-Consumer Problem using C/C++ and Pthread API(Thread-safe)

Producer-consumer Problem using C/C++ and Pthread APIs (Thread-safe)

Do programming project 3: Producer-Consumer Problem described in pp. 253-255 in Textbook 9-th ed. using

Pthread APIs and C (or C++) language on Linux with the following additional requirements:

As described in the text, your program should be run in the following way:

% ./producer_consumer2 how_long_to_sleep_in_seconds num_of_producers number_of_consumers

For example,

%./producer_consumer2 180 10 20

Your program will

As soon as the program starts, read all the words in [login to view URL] into an array

Create 10 producer threads

Create 20 consumer threads

Each producer/consumer thread should run an infinite loop doing one of the followings:

o Each producer thread sleeps for a random period of seconds (between 0 and RAND_MAX),

upon awakening, will attempt to insert a word randomly selected from the list of words in

[login to view URL] into the buffer. Whenever a randomly selected word is inserted into the buffer,

the information should be printed on the screen (i.e., thread_id and the word)

o Each consumer thread sleeps for a random period of seconds (between 0 and RAND_MAX),

upon awakening, will attempt to remove a word from the buffer. Whenever a word is removed

from the buffer, the information should be printed on the screen (i.e., thread_id and the word)

Your program will run for 180 seconds.

An outline of the producer and consumer threads is shown in Figure 5.26.

Requirements:

 The name of the executable file should “producer_consumer2”.

 RAND_MAX should be 10 (i.e., 10 seconds)

 Your program should be use all of the following Pthread APIs correctly!

o mutex_lock, mutex_unlock, sem_wait, sem_post

o You have to use BOTH MUTEX AND SEMAPHORE.

 In your code, you can use sleep(seconds) API to make threads to sleep for seconds.

 You need to provide a write-up in plain text format describing your source code (300 words or more).

 Each producer/consumer thread should print out a message whenever some value is inserted into the

buffer or removed from the buffer along with its own identifier. Use the following message formats:

[consumer thread ID: 2] removed an item (word: apple) from the buffer

[producer thread ID: 1] inserted an item (word: orange) to the buffer

Recommended Testing scenarios:

 Only producer threads are running

4

o ./producer_consumer2 180 10 0

 All producer threads should be blocked eventually since there is no consumer thread.

 Only consumer threads are running

o ./producer_consumer2 180 0 10

 All consumer threads are blocked at the beginning since there is no data to be read by

the consumer threads

 Multiple producer threads and multiple consumer threads

%./producer_consumer2 180 10 20

Taidot: C-ohjelmointi, C++ -ohjelmointi, Linux, tietojärjestelmäarkkitehtuuri, UNIX

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( 1 arvostelu ) LINCOLN, United States

Projektin tunnus: #16775280

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kcbStar

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