Mohammad Akhlaghi wrote: > I have made extensive use of the pthread_barrier_* types and functions > for the parallel processing parts of gnuastro. But I found out Gnulib > doesn't include them. I wanted to see if it would be possible for you to > include these in the Gnulib version of pthread. Using a pthread_barrier > is simpler than using a mutex and condition variable together when the > jobs are completely independent.
Which one of these two implementation approaches would be better: a) using the same design as glibc, https://sourceware.org/git/?p=glibc.git;a=blob;f=nptl/DESIGN-barrier.txt;hb=HEAD possibly with an additional lock for the atomic increment? b) using two semaphores, as in http://stackoverflow.com/questions/6331301/implementing-an-n-process-barrier-using-semaphores (possibly replacing the second semaphore with a pthread_cond_t ?) [I'm not going to implement it. Just trying to give food for thought.] Bruno
