Write a program which implements a multiple producer - multiple consumer environment. Details: You will be implementing a version of the producer-consumer project from our text using the Pthreads API. The project is described generally in the attached document. I'll summarize most of the description here as well as add some additional requirements for our class. Main program Your main program will spawn off some number of producer threads and some number of consumer threads, all of which will interact through a single shared buffer. Here is the skeleton for main(): int main(int argc, char *argv[]) { /* 1. Get command line arguments */ /* 2. Initialize buffer */ /* 3. Create producer threads. */ /* 4. Create consumer threads. */ /* 5. Sleep. */ /* 6. Main thread exits. */ } Main will take 3 arguments from the command line: 1. The length of time the program should run. 2. The number of producer threads. 3. The number of consumer threads.

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.