Function pthread_create

compat/os2threads.h:80–92

}

static av_always_inline int pthread_create(pthread_t *thread,
                                           const pthread_attr_t *attr,
                                           void *(*start_routine)(void*),
                                           void *arg)
{
    thread->start_routine = start_routine;
    thread->arg = arg;
    thread->result = NULL;

    thread->tid = _beginthread(thread_entry, NULL, 1024 * 1024, thread);

    return 0;
}

static av_always_inline int pthread_join(pthread_t thread, void **value_ptr)
{