barrier destroy must also wait for threads in other processes exiting barrier

[musl] / src / thread / pthread_barrier_destroy.c

#include "pthread_impl.h"

void __vm_lock(int), __vm_unlock(void);

int pthread_barrier_destroy(pthread_barrier_t *b)
{
        if (b->_b_limit < 0) {
                int seq = b->_b_seq;
                if (seq & 1) __wait(&b->_b_seq, 0, seq, 0);
                __vm_lock(-1);
                __vm_unlock();
        }
        return 0;
}