Method timerfd_settime

source/kernel/kprocess.cpp:2547–2589

}

U32 KProcess::timerfd_settime(U32 fildes, U32 flags, U32 newValue, U32 oldValue) {
    KFileDescriptorPtr fd = getFileDescriptor(fildes);
    if (!fd) {
        return -K_EBADF;
    }
    if (fd->kobject->type != KTYPE_SIGNAL) {
        return -K_EINVAL;
    }
    if (!newValue) {
        return -K_EFAULT;
    }
    std::shared_ptr<KTimer> timer = std::dynamic_pointer_cast<KTimer>(fd->kobject);
    if (oldValue) {
        U64 microNextTimer = timer->getMicroNextTimer();
        U64 microInterval = timer->getMicroInterval();

        memory->writed(oldValue, (U32)(microInterval / 1000000));
        memory->writed(oldValue + 4, (U32)((microInterval % 1000000) * 1000));

        if (!microNextTimer) {
            memory->writed(oldValue + 8, 0);
            memory->writed(oldValue + 12, 0);
        } else {
            U64 currentTime = KSystem::getSystemTimeAsMicroSeconds();
            S64 diff = (S64)microNextTimer - (S64)currentTime;
            if (diff < 0) {
                memory->writed(oldValue + 8, 0);
                memory->writed(oldValue + 12, 0);
            } else {
                memory->writed(oldValue + 8, (U32)(diff / 1000000));
                memory->writed(oldValue + 12, (U32)((diff % 1000000) * 1000));
            }
        }
    }
    U64 interval = memory->readd(newValue) * 1000000 + memory->readd(newValue+4) / 1000;
    U64 next = memory->readd(newValue+8) * 1000000 + memory->readd(newValue + 12) / 1000;
    // TFD_TIMER_ABSTIME
    if ((flags & 1) == 0) {
        next += KSystem::getSystemTimeAsMicroSeconds();
    }
    timer->setTimes(interval, next);
    return 0;
}

U32 KProcess::timerfd_gettime(U32 fildes, U32 value) {
    KFileDescriptorPtr fd = getFileDescriptor(fildes);