Function sync_jsdev

src/library/inputs/jsdev.cpp:126–151

}

bool sync_jsdev(int jsnum)
{
    if (jsdevfds[jsnum].second == 0)
        return false;

    /* Do not attempt to sync if the pipe is already full */
    int attempts = 0, count = 0;
    NATIVECALL(ioctl(jsdevfds[jsnum].first.first, FIONREAD, &count));

    if (count >= static_cast<int>(64*sizeof(struct js_event)))
        return false;

    do {
        NATIVECALL(ioctl(jsdevfds[jsnum].first.first, FIONREAD, &count));
        if (count > 0) {
            if (++attempts > 10 * 100) {
                LOG(LL_ERROR, LCF_JOYSTICK, "jsdev sync took too long, were asynchronous events incorrectly enabled?");
                return false;
            }
            struct timespec sleepTime = { 0, 10 * 1000 };
            NATIVECALL(nanosleep(&sleepTime, NULL));
        }
    } while (count > 0);

    return true;
}

int get_js_number(int fd)
{