turnstyle | ️A GitHub Action for serializing workflow runs | Continous Integration library
kandi X-RAY | turnstyle Summary
kandi X-RAY | turnstyle Summary
️A GitHub Action for serializing workflow runs
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QUESTION
Need a solution that creates 5 pthreads. Each pthread executes a function that involves iterating through a loop 10 times. In each iteration of the loop, a thread increments an int from 0 to 0.9*MAX_INT and then prints the iteration number. Make sure that each of the 5 threads finish the ith iteration of the loop before they can start the (i+1)th iteration (i.e. all threads synchronize/rendezvous towards the end of each iteration). I need to use a two-phase barrier implemented using POSIX semaphores to enforce the synchronization constraint
I wrote following code am I correct ?
...ANSWER
Answered 2020-May-27 at 06:56OK, if we examine the Barrier
object in, "The Little Book of Semaphores", section 3.7.7, we see that we need a mutex
and 2 semaphores called turnstile
and turnstile2
(a mutex can be a semaphore that is initialized to 1).
Since we have to use POSIX semaphores, pthreads, and INT_MAX
, we start by including the requisite header files:
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