source: azure_iot_hub/trunk/musl-1.1.18/src/thread/sem_init.c@ 388

#include <semaphore.h>
#include <limits.h>
#include <errno.h>

int sem_init(sem_t *sem, int pshared, unsigned value)
{
        if (value > SEM_VALUE_MAX) {
                errno = EINVAL;
                return -1;
        }
        sem->__val[0] = value;
        sem->__val[1] = 0;
        sem->__val[2] = pshared ? 0 : 128;
        return 0;
}