C programming

I need this done in 36 hours A barrier is a tool for synchronizing the activity of a number of threads. When a thread reaches a barrier point, it cannot proceed until all other threads have reached this point as well. When the last thread reaches the barrier point, all threads are released and can resume concurrent execution. Assume that the barrier is initialized to N — the number of threads that must wait at the barrier point: init(N); Each thread then performs some work until it reaches the barrier point: /* do some work for awhile */ barrier_point(); /* do some work for awhile */ Using the POSIX pthread library described in the class, construct a barrier that implements the following API: int barrier_init(int n) // Initializes the barrier to the specified size. int barrier_point(void) // Identifies the barrier point. All threads are released from the barrier when the last thread reaches this point. The return value of each function is used to identify error conditions. Each function will return 0 under normal operation and will return −1 if an error occurs. To test your implementation of the barrier, create N threads in the main() function and set up a barrier point in each thread. Submission requirement: Artifacts to be submitted: a short report describing your design