问题
I am looking for an inter-processes barrier implementation. Processes are in shared memory (ie. on the same ndoe).
Processes are MPI ones. I do not want to use the MPI_Barrier function, because the general policy for all the MPI implementation is active waiting. I want my processes sleeping as long as they wait.
The restrictions:
- should be in C, maybe in C++
- no spinlock, so it could use semaphore
- linux OS
I am confident it exists thousands of barrier implementation, but I do not find any?!
Thanks
回答1:
pthread_barrier is the POSIX API for barriers. They may live in process shared memory if you initialize them accordingly.
回答2:
You should check out Boost. I believe that it has an interprocess module that you can use.
来源：https://stackoverflow.com/questions/4461954/barrier-implementation-for-inter-process-in-shared-memory