/*!
* Create new timer
* \param clockid Clock used in timer
* \param evp Timer expiration action
* \param timerid Timer descriptor is returned in this variable
* \return status 0 for success
*/
int sys__timer_create ( void *p )
{
clockid_t clockid;
sigevent_t *evp;
timer_t *timerid;
ktimer_t *ktimer;
int retval = EXIT_SUCCESS;
kobject_t *kobj;
clockid = *( (clockid_t *) p ); p += sizeof (clockid_t);
evp = *( (sigevent_t **) p ); p += sizeof (sigevent_t *);
timerid = *( (timer_t **) p );
ASSERT_ERRNO_AND_EXIT (
clockid == CLOCK_REALTIME || clockid == CLOCK_MONOTONIC, EINVAL );
ASSERT_ERRNO_AND_EXIT ( evp && timerid, EINVAL );
retval = ktimer_create ( clockid, evp, &ktimer, kthread_get_active() );
if ( retval == EXIT_SUCCESS )
{
kobj = kmalloc_kobject ( 0 );
kobj->kobject = ktimer;
timerid->id = ktimer->id;
timerid->ptr = kobj;
}
EXIT ( retval );
}
void ksched_rr_start_timer ()
{
sigevent_t evp;
itimerspec_t itimer;
int retval = 0;
if ( rr_ktimer )
return; /* already set */
evp.sigev_notify = SIGEV_THREAD;
evp.sigev_value.sival_ptr = NULL;
evp.sigev_notify_function = ksched_rr_tick;
retval += ktimer_create ( CLOCK_REALTIME, &evp, &rr_ktimer, NULL );
ASSERT ( retval == EXIT_SUCCESS );
TIME_RESET ( &itimer.it_value );
itimer.it_value.tv_sec = 0;
itimer.it_value.tv_nsec = SCHED_RR_TICK;
itimer.it_interval = itimer.it_value;
retval += ktimer_settime ( rr_ktimer, 0, &itimer, NULL );
ASSERT ( retval == EXIT_SUCCESS );
}
/*!
* Suspend thread until given time elapses
* \param clockid Clock to use
* \param flags Flags (TIMER_ABSTIME)
* \param request Suspend duration
* \param remain Remainder time if interrupted during suspension
* \return status
*/
int sys__clock_nanosleep ( void *p )
{
clockid_t clockid;
int flags;
timespec_t *request;
timespec_t *remain;
int retval = EXIT_SUCCESS;
kthread_t *kthread = kthread_get_active ();
ktimer_t *ktimer;
sigevent_t evp;
itimerspec_t itimer;
clockid = *( (clockid_t *) p ); p += sizeof (clockid_t);
flags = *( (int *) p ); p += sizeof (int);
request = *( (timespec_t **) p ); p += sizeof (timespec_t *);
remain = *( (timespec_t **) p );
ASSERT_ERRNO_AND_EXIT (
(clockid==CLOCK_REALTIME || clockid==CLOCK_MONOTONIC) &&
request && TIME_IS_SET(request),
EINVAL
);
/* Timers are used for "sleep" operations through steps 1-4 */
/* 1. create timer, but not arm it yet */
evp.sigev_notify = SIGEV_WAKE_THREAD;
evp.sigev_value.sival_ptr = kthread;
evp.sigev_notify_function = kclock_wake_thread;
retval += ktimer_create ( clockid, &evp, &ktimer, kthread );
ASSERT ( retval == EXIT_SUCCESS );
/* save remainder location, if provided */
ktimer->param = remain;
/* 2. suspend thread */
kthread_set_private_param ( kthread, ktimer );
retval += kthread_suspend ( kthread, kclock_interrupt_sleep, ktimer );
ASSERT ( retval == EXIT_SUCCESS );
/* 3. arm timer */
TIME_RESET ( &itimer.it_interval );
itimer.it_value = *request;
retval += ktimer_settime ( ktimer, flags, &itimer, NULL );
ASSERT ( retval == EXIT_SUCCESS );
/* 4. pick other thread as active */
kthreads_schedule ();
EXIT ( retval );
}
static int edf_create_alarm ( kthread_t *kthread, void *action, void **timer )
{
sigevent_t evp;
evp.sigev_notify = SIGEV_THREAD;
evp.sigev_notify_function = action;
evp.sigev_notify_attributes = NULL;
evp.sigev_value.sival_ptr = kthread;
return ktimer_create ( CLOCK_REALTIME, &evp, timer, NULL );
}
int main(int argc, char* argv[]) {
int i = 0;
kloop_t* loop = 0;
ktimer_t* timer = 0;
kchannel_ref_t* connector = 0;
kthread_runner_t* timer_thread = 0;
static const char* helper_string =
"-n client count\n"
"-ip remote host IP\n"
"-port remote host port\n";
if (argc > 2) {
for (i = 1; i < argc; i++) {
if (!strcmp("-n", argv[i])) {
client_n = atoi(argv[i+1]);
} else if (!strcmp("-ip", argv[i])) {
ip = argv[i+1];
} else if (!strcmp("-port", argv[i])) {
port = atoi(argv[i+1]);
}
}
} else {
printf(helper_string);
exit(0);
}
loop = knet_loop_create();
timer_loop = ktimer_loop_create(1000);
timer = ktimer_create(timer_loop);
ktimer_start(timer, timer_cb, 0, 1000);
timer_thread = thread_runner_create(0, 0);
thread_runner_start_timer_loop(timer_thread, timer_loop, 0);
connector = knet_loop_create_channel(loop, 8, 121);
knet_channel_ref_set_cb(connector, connector_cb);
knet_channel_ref_set_timeout(connector, 1);
if (error_ok != knet_channel_ref_connect(connector, ip, port, 20)) {
return 0;
}
knet_loop_run(loop);
thread_runner_destroy(timer_thread);
knet_loop_destroy(loop);
ktimer_loop_destroy(timer_loop);
return 0;
}
