/* timer_num defines the timer type. At the moment
there is only one timer. */
int ofp_timer_ticks(int timer_num)
{
(void)timer_num;
if (!shm)
return 0;
return odp_timer_current_tick(shm->socket_timer_pool);
}
/* @private Handle a received (timeout) event */
static void handle_tmo(odp_event_t ev, bool stale, uint64_t prev_tick)
{
CU_ASSERT_FATAL(ev != ODP_EVENT_INVALID); /* Internal error */
if (odp_event_type(ev) != ODP_EVENT_TIMEOUT) {
/* Not a timeout event */
CU_FAIL("Unexpected event type received");
return;
}
/* Read the metadata from the timeout */
odp_timeout_t tmo = odp_timeout_from_event(ev);
odp_timer_t tim = odp_timeout_timer(tmo);
uint64_t tick = odp_timeout_tick(tmo);
struct test_timer *ttp = odp_timeout_user_ptr(tmo);
if (tim == ODP_TIMER_INVALID)
CU_FAIL("odp_timeout_timer() invalid timer");
if (!ttp)
CU_FAIL("odp_timeout_user_ptr() null user ptr");
if (ttp && ttp->ev2 != ev)
CU_FAIL("odp_timeout_user_ptr() wrong user ptr");
if (ttp && ttp->tim != tim)
CU_FAIL("odp_timeout_timer() wrong timer");
if (stale) {
if (odp_timeout_fresh(tmo))
CU_FAIL("Wrong status (fresh) for stale timeout");
/* Stale timeout => local timer must have invalid tick */
if (ttp && ttp->tick != TICK_INVALID)
CU_FAIL("Stale timeout for active timer");
} else {
if (!odp_timeout_fresh(tmo))
CU_FAIL("Wrong status (stale) for fresh timeout");
/* Fresh timeout => local timer must have matching tick */
if (ttp && ttp->tick != tick) {
LOG_DBG("Wrong tick: expected %" PRIu64
" actual %" PRIu64 "\n",
ttp->tick, tick);
CU_FAIL("odp_timeout_tick() wrong tick");
}
/* Check that timeout was delivered 'timely' */
if (tick > odp_timer_current_tick(tp))
CU_FAIL("Timeout delivered early");
if (tick < prev_tick) {
LOG_DBG("Too late tick: %" PRIu64
" prev_tick %" PRIu64"\n",
tick, prev_tick);
/* We don't report late timeouts using CU_FAIL */
odp_atomic_inc_u32(&ndelivtoolate);
}
}
if (ttp) {
/* Internal error */
CU_ASSERT_FATAL(ttp->ev == ODP_EVENT_INVALID);
ttp->ev = ev;
}
}
/** @private test timeout */
static void test_abs_timeouts(int thr, test_globals_t *gbls)
{
uint64_t period;
uint64_t period_ns;
odp_queue_t queue;
uint64_t tick;
struct test_timer *ttp;
odp_timeout_t tmo;
EXAMPLE_DBG(" [%i] test_timeouts\n", thr);
queue = odp_queue_lookup("timer_queue");
period_ns = gbls->args.period_us*ODP_TIME_USEC;
period = odp_timer_ns_to_tick(gbls->tp, period_ns);
EXAMPLE_DBG(" [%i] period %"PRIu64" ticks, %"PRIu64" ns\n", thr,
period, period_ns);
EXAMPLE_DBG(" [%i] current tick %"PRIu64"\n", thr,
odp_timer_current_tick(gbls->tp));
ttp = &gbls->tt[thr];
ttp->tim = odp_timer_alloc(gbls->tp, queue, ttp);
if (ttp->tim == ODP_TIMER_INVALID) {
EXAMPLE_ERR("Failed to allocate timer\n");
return;
}
tmo = odp_timeout_alloc(gbls->pool);
if (tmo == ODP_TIMEOUT_INVALID) {
EXAMPLE_ERR("Failed to allocate timeout\n");
return;
}
ttp->ev = odp_timeout_to_event(tmo);
tick = odp_timer_current_tick(gbls->tp);
while ((int)odp_atomic_load_u32(&gbls->remain) > 0) {
odp_event_t ev;
odp_timer_set_t rc;
tick += period;
rc = odp_timer_set_abs(ttp->tim, tick, &ttp->ev);
if (odp_unlikely(rc != ODP_TIMER_SUCCESS)) {
/* Too early or too late timeout requested */
EXAMPLE_ABORT("odp_timer_set_abs() failed: %s\n",
timerset2str(rc));
}
/* Get the next expired timeout.
* We invoke the scheduler in a loop with a timeout because
* we are not guaranteed to receive any more timeouts. The
* scheduler isn't guaranteeing fairness when scheduling
* buffers to threads.
* Use 1.5 second timeout for scheduler */
uint64_t sched_tmo =
odp_schedule_wait_time(1500000000ULL);
do {
ev = odp_schedule(&queue, sched_tmo);
/* Check if odp_schedule() timed out, possibly there
* are no remaining timeouts to receive */
} while (ev == ODP_EVENT_INVALID &&
(int)odp_atomic_load_u32(&gbls->remain) > 0);
if (ev == ODP_EVENT_INVALID)
break; /* No more timeouts */
if (odp_event_type(ev) != ODP_EVENT_TIMEOUT) {
/* Not a default timeout event */
EXAMPLE_ABORT("Unexpected event type (%u) received\n",
odp_event_type(ev));
}
odp_timeout_t tmo = odp_timeout_from_event(ev);
tick = odp_timeout_tick(tmo);
ttp = odp_timeout_user_ptr(tmo);
ttp->ev = ev;
if (!odp_timeout_fresh(tmo)) {
/* Not the expected expiration tick, timer has
* been reset or cancelled or freed */
EXAMPLE_ABORT("Unexpected timeout received (timer %" PRIx32 ", tick %" PRIu64 ")\n",
ttp->tim, tick);
}
EXAMPLE_DBG(" [%i] timeout, tick %"PRIu64"\n", thr, tick);
odp_atomic_dec_u32(&gbls->remain);
}
/* Cancel and free last timer used */
(void)odp_timer_cancel(ttp->tim, &ttp->ev);
if (ttp->ev != ODP_EVENT_INVALID)
odp_timeout_free(odp_timeout_from_event(ttp->ev));
else
EXAMPLE_ERR("Lost timeout event at timer cancel\n");
/* Since we have cancelled the timer, there is no timeout event to
* return from odp_timer_free() */
(void)odp_timer_free(ttp->tim);
/* Remove any prescheduled events */
remove_prescheduled_events();
}
/** @private test timeout */
static void test_abs_timeouts(int thr, test_globals_t *gbls)
{
uint64_t period;
uint64_t period_ns;
odp_queue_t queue;
uint64_t tick;
struct test_timer *ttp;
odp_timeout_t tmo;
uint32_t num_workers = gbls->num_workers;
EXAMPLE_DBG(" [%i] test_timeouts\n", thr);
queue = odp_queue_lookup("timer_queue");
period_ns = gbls->args.period_us * ODP_TIME_USEC;
period = odp_timer_ns_to_tick(gbls->tp, period_ns);
EXAMPLE_DBG(" [%i] period %d ticks, %d ns\n", thr,
period, period_ns);
EXAMPLE_DBG(" [%i] current tick %d\n", thr,
odp_timer_current_tick(gbls->tp));
ttp = &gbls->tt[thr];
ttp->tim = odp_timer_alloc(gbls->tp, queue, ttp);
if (ttp->tim == ODP_TIMER_INVALID) {
EXAMPLE_ERR("Failed to allocate timer\n");
return;
}
tmo = odp_timeout_alloc(gbls->pool);
if (tmo == ODP_TIMEOUT_INVALID) {
EXAMPLE_ERR("Failed to allocate timeout\n");
return;
}
ttp->ev = odp_timeout_to_event(tmo);
tick = odp_timer_current_tick(gbls->tp);
while (1) {
int wait = 0;
odp_event_t ev;
odp_timer_set_t rc;
if (ttp) {
tick += period;
rc = odp_timer_set_abs(ttp->tim, tick, &ttp->ev);
if (odp_unlikely(rc != ODP_TIMER_SUCCESS))
/* Too early or too late timeout requested */
EXAMPLE_ABORT("odp_timer_set_abs() failed: %s\n",
timerset2str(rc));
}
/* Get the next expired timeout.
* We invoke the scheduler in a loop with a timeout because
* we are not guaranteed to receive any more timeouts. The
* scheduler isn't guaranteeing fairness when scheduling
* buffers to threads.
* Use 1.5 second timeout for scheduler */
uint64_t sched_tmo =
odp_schedule_wait_time(1500000000ULL);
do {
ev = odp_schedule(&queue, sched_tmo);
/* Check if odp_schedule() timed out, possibly there
* are no remaining timeouts to receive */
if ((++wait > WAIT_NUM)
&& (odp_atomic_load_u32(&gbls->remain) < num_workers))
EXAMPLE_ABORT("At least one TMO was lost\n");
} while (ev == ODP_EVENT_INVALID
&& (int)odp_atomic_load_u32(&gbls->remain) > 0);
if (ev == ODP_EVENT_INVALID)
break; /* No more timeouts */
if (odp_event_type(ev) != ODP_EVENT_TIMEOUT)
/* Not a default timeout event */
EXAMPLE_ABORT("Unexpected event type (%u) received\n",
odp_event_type(ev));
odp_timeout_t tmo = odp_timeout_from_event(ev);
tick = odp_timeout_tick(tmo);
ttp = odp_timeout_user_ptr(tmo);
ttp->ev = ev;
if (!odp_timeout_fresh(tmo))
/* Not the expected expiration tick, timer has
* been reset or cancelled or freed */
EXAMPLE_ABORT("Unexpected timeout received (timer %x, tick %d)\n",
ttp->tim, tick);
EXAMPLE_DBG(" [%i] timeout, tick %d\n", thr, tick);
uint32_t rx_num = odp_atomic_fetch_dec_u32(&gbls->remain);
if (!rx_num)
EXAMPLE_ABORT("Unexpected timeout received (timer %x, tick %d)\n",
ttp->tim, tick);
else if (rx_num > num_workers)
continue;
odp_timeout_free(odp_timeout_from_event(ttp->ev));
odp_timer_free(ttp->tim);
ttp = NULL;
}
/* Remove any prescheduled events */
remove_prescheduled_events();
}
odp_timer_t ofp_timer_start(uint64_t tmo_us, ofp_timer_callback callback,
void *arg, int arglen)
{
uint64_t tick;
uint64_t period;
uint64_t period_ns;
struct ofp_timer_internal *bufdata;
odp_buffer_t buf;
odp_timer_set_t t;
odp_timeout_t tmo;
/* Init shm if not done yet. */
if ((shm == NULL) && ofp_timer_lookup_shared_memory()) {
OFP_ERR("ofp_timer_lookup_shared_memory failed");
return ODP_TIMER_INVALID;
}
/* Alloc user buffer */
buf = odp_buffer_alloc(shm->buf_pool);
if (buf == ODP_BUFFER_INVALID) {
OFP_ERR("odp_buffer_alloc failed");
return ODP_TIMER_INVALID;
}
bufdata = (struct ofp_timer_internal *)odp_buffer_addr(buf);
bufdata->callback = callback;
bufdata->buf = buf;
bufdata->t_ev = ODP_EVENT_INVALID;
bufdata->next = NULL;
bufdata->id = 0;
if (arg && arglen)
memcpy(bufdata->arg, arg, arglen);
if (tmo_us >= OFP_TIMER_MAX_US) {
/* Long 1 s resolution timeout */
uint64_t sec = tmo_us/1000000UL;
if (sec > TIMER_NUM_LONG_SLOTS) {
OFP_ERR("Timeout too long = %"PRIu64"s", sec);
}
odp_spinlock_lock(&shm->lock);
int ix = (shm->sec_counter + sec) & TIMER_LONG_MASK;
bufdata->id = ((shm->id++)<<TIMER_LONG_SHIFT) | ix | 0x80000000;
bufdata->next = shm->long_table[ix];
shm->long_table[ix] = bufdata;
odp_spinlock_unlock(&shm->lock);
return (odp_timer_t) bufdata->id;
} else {
/* Short 10 ms resolution timeout */
odp_timer_t timer;
/* Alloc timout event */
tmo = odp_timeout_alloc(shm->pool);
if (tmo == ODP_TIMEOUT_INVALID) {
odp_buffer_free(buf);
OFP_ERR("odp_timeout_alloc failed");
return ODP_TIMER_INVALID;
}
bufdata->t_ev = odp_timeout_to_event(tmo);
period_ns = tmo_us*ODP_TIME_USEC_IN_NS;
period = odp_timer_ns_to_tick(shm->socket_timer_pool, period_ns);
tick = odp_timer_current_tick(shm->socket_timer_pool);
tick += period;
timer = odp_timer_alloc(shm->socket_timer_pool,
shm->queue, bufdata);
if (timer == ODP_TIMER_INVALID) {
odp_timeout_free(tmo);
odp_buffer_free(buf);
OFP_ERR("odp_timer_alloc failed");
return ODP_TIMER_INVALID;
}
t = odp_timer_set_abs(timer, tick, &bufdata->t_ev);
if (t != ODP_TIMER_SUCCESS) {
odp_timeout_free(tmo);
odp_buffer_free(buf);
OFP_ERR("odp_timer_set_abs failed");
return ODP_TIMER_INVALID;
}
return timer;
}
return ODP_TIMER_INVALID;
}