uint64_t odp_schedule_wait_time(uint64_t ns)
{
if (ns <= ODP_SCHED_NO_WAIT)
ns = ODP_SCHED_NO_WAIT + 1;
return odp_time_ns_to_cycles(ns);
}
/**
* Test main function
*/
int main(int argc, char *argv[])
{
odph_linux_pthread_t thread_tbl[MAX_WORKERS];
int num_workers;
odp_queue_t queue;
uint64_t cycles, ns;
odp_queue_param_t param;
odp_pool_param_t params;
odp_timer_pool_param_t tparams;
odp_timer_pool_info_t tpinfo;
odp_cpumask_t cpumask;
char cpumaskstr[ODP_CPUMASK_STR_SIZE];
odp_shm_t shm;
test_globals_t *gbls;
printf("\nODP timer example starts\n");
if (odp_init_global(NULL, NULL)) {
printf("ODP global init failed.\n");
return -1;
}
/* Init this thread. */
if (odp_init_local()) {
printf("ODP local init failed.\n");
return -1;
}
printf("\n");
printf("ODP system info\n");
printf("---------------\n");
printf("ODP API version: %s\n", odp_version_api_str());
printf("CPU model: %s\n", odp_sys_cpu_model_str());
printf("CPU freq (hz): %"PRIu64"\n", odp_sys_cpu_hz());
printf("Cache line size: %i\n", odp_sys_cache_line_size());
printf("Max CPU count: %i\n", odp_cpu_count());
printf("\n");
/* Reserve memory for test_globals_t from shared mem */
shm = odp_shm_reserve("shm_test_globals", sizeof(test_globals_t),
ODP_CACHE_LINE_SIZE, 0);
if (ODP_SHM_INVALID == shm) {
EXAMPLE_ERR("Error: shared mem reserve failed.\n");
return -1;
}
gbls = odp_shm_addr(shm);
if (NULL == gbls) {
EXAMPLE_ERR("Error: shared mem alloc failed.\n");
return -1;
}
memset(gbls, 0, sizeof(test_globals_t));
parse_args(argc, argv, &gbls->args);
memset(thread_tbl, 0, sizeof(thread_tbl));
/* Default to system CPU count unless user specified */
num_workers = MAX_WORKERS;
if (gbls->args.cpu_count)
num_workers = gbls->args.cpu_count;
/*
* By default CPU #0 runs Linux kernel background tasks.
* Start mapping thread from CPU #1
*/
num_workers = odph_linux_cpumask_default(&cpumask, num_workers);
(void)odp_cpumask_to_str(&cpumask, cpumaskstr, sizeof(cpumaskstr));
printf("num worker threads: %i\n", num_workers);
printf("first CPU: %i\n", odp_cpumask_first(&cpumask));
printf("cpu mask: %s\n", cpumaskstr);
printf("resolution: %i usec\n", gbls->args.resolution_us);
printf("min timeout: %i usec\n", gbls->args.min_us);
printf("max timeout: %i usec\n", gbls->args.max_us);
printf("period: %i usec\n", gbls->args.period_us);
printf("timeouts: %i\n", gbls->args.tmo_count);
/*
* Create pool for timeouts
*/
params.tmo.num = NUM_TMOS;
params.type = ODP_POOL_TIMEOUT;
gbls->pool = odp_pool_create("msg_pool", ODP_SHM_NULL, ¶ms);
if (gbls->pool == ODP_POOL_INVALID) {
EXAMPLE_ERR("Pool create failed.\n");
return -1;
}
tparams.res_ns = gbls->args.resolution_us*ODP_TIME_USEC;
tparams.min_tmo = gbls->args.min_us*ODP_TIME_USEC;
tparams.max_tmo = gbls->args.max_us*ODP_TIME_USEC;
tparams.num_timers = num_workers; /* One timer per worker */
tparams.priv = 0; /* Shared */
tparams.clk_src = ODP_CLOCK_CPU;
gbls->tp = odp_timer_pool_create("timer_pool", &tparams);
if (gbls->tp == ODP_TIMER_POOL_INVALID) {
EXAMPLE_ERR("Timer pool create failed.\n");
return -1;
}
odp_timer_pool_start();
odp_shm_print_all();
(void)odp_timer_pool_info(gbls->tp, &tpinfo);
printf("Timer pool\n");
printf("----------\n");
printf(" name: %s\n", tpinfo.name);
printf(" resolution: %"PRIu64" ns\n", tpinfo.param.res_ns);
printf(" min tmo: %"PRIu64" ticks\n", tpinfo.param.min_tmo);
printf(" max tmo: %"PRIu64" ticks\n", tpinfo.param.max_tmo);
printf("\n");
/*
* Create a queue for timer test
*/
memset(¶m, 0, sizeof(param));
param.sched.prio = ODP_SCHED_PRIO_DEFAULT;
param.sched.sync = ODP_SCHED_SYNC_NONE;
param.sched.group = ODP_SCHED_GROUP_DEFAULT;
queue = odp_queue_create("timer_queue", ODP_QUEUE_TYPE_SCHED, ¶m);
if (queue == ODP_QUEUE_INVALID) {
EXAMPLE_ERR("Timer queue create failed.\n");
return -1;
}
printf("CPU freq %"PRIu64" Hz\n", odp_sys_cpu_hz());
printf("Cycles vs nanoseconds:\n");
ns = 0;
cycles = odp_time_ns_to_cycles(ns);
printf(" %12"PRIu64" ns -> %12"PRIu64" cycles\n", ns, cycles);
printf(" %12"PRIu64" cycles -> %12"PRIu64" ns\n", cycles,
odp_time_cycles_to_ns(cycles));
for (ns = 1; ns <= 100*ODP_TIME_SEC; ns *= 10) {
cycles = odp_time_ns_to_cycles(ns);
printf(" %12"PRIu64" ns -> %12"PRIu64" cycles\n", ns,
cycles);
printf(" %12"PRIu64" cycles -> %12"PRIu64" ns\n", cycles,
odp_time_cycles_to_ns(cycles));
}
printf("\n");
/* Initialize number of timeouts to receive */
odp_atomic_init_u32(&gbls->remain, gbls->args.tmo_count * num_workers);
/* Barrier to sync test case execution */
odp_barrier_init(&gbls->test_barrier, num_workers);
/* Create and launch worker threads */
odph_linux_pthread_create(thread_tbl, &cpumask,
run_thread, gbls);
/* Wait for worker threads to exit */
odph_linux_pthread_join(thread_tbl, num_workers);
printf("ODP timer test complete\n\n");
return 0;
}
/*
* Busy loop for specified length of time.
*/
static void busy_loop_ns(uint64_t wait_ns)
{
uint64_t end = odp_time_cycles() + odp_time_ns_to_cycles(wait_ns);
while (odp_time_cycles() < end)
;
}
/*
* Main packet transmit routine. Transmit packets at a fixed rate for
* specified length of time.
*/
static void *run_thread_tx(void *arg)
{
test_globals_t *globals;
int thr_id;
odp_queue_t outq;
pkt_tx_stats_t *stats;
uint64_t next_tx_cycles, end_cycles, cur_cycles;
uint64_t burst_gap_cycles;
uint32_t batch_len;
int unsent_pkts = 0;
odp_event_t tx_event[BATCH_LEN_MAX];
uint64_t idle_start = 0;
thread_args_t *targs = arg;
batch_len = targs->batch_len;
if (batch_len > BATCH_LEN_MAX)
batch_len = BATCH_LEN_MAX;
thr_id = odp_thread_id();
globals = odp_shm_addr(odp_shm_lookup("test_globals"));
stats = &globals->tx_stats[thr_id];
outq = odp_pktio_outq_getdef(globals->pktio_tx);
if (outq == ODP_QUEUE_INVALID)
LOG_ABORT("Failed to get output queue for thread %d\n", thr_id);
burst_gap_cycles = odp_time_ns_to_cycles(
(ODP_TIME_SEC * 999) / (1000 * targs->pps / (targs->batch_len)));
odp_barrier_wait(&globals->tx_barrier);
cur_cycles = odp_time_cycles();
next_tx_cycles = cur_cycles;
end_cycles = cur_cycles +
odp_time_ns_to_cycles(targs->duration * ODP_TIME_SEC);
while (cur_cycles < end_cycles) {
unsigned alloc_cnt = 0, tx_cnt;
if (cur_cycles < next_tx_cycles) {
cur_cycles = odp_time_cycles();
if (idle_start == 0)
idle_start = cur_cycles;
continue;
}
if (idle_start) {
stats->s.idle_cycles += odp_time_diff_cycles(
idle_start, cur_cycles);
idle_start = 0;
}
next_tx_cycles += burst_gap_cycles;
alloc_cnt = alloc_packets(tx_event, batch_len - unsent_pkts);
if (alloc_cnt != batch_len)
stats->s.alloc_failures++;
tx_cnt = send_packets(outq, tx_event, alloc_cnt);
unsent_pkts = alloc_cnt - tx_cnt;
stats->s.enq_failures += unsent_pkts;
stats->s.tx_cnt += tx_cnt;
cur_cycles = odp_time_cycles();
}
VPRINT(" %02d: TxPkts %-8"PRIu64" EnqFail %-6"PRIu64
" AllocFail %-6"PRIu64" Idle %"PRIu64"ms\n",
thr_id, stats->s.tx_cnt,
stats->s.enq_failures, stats->s.alloc_failures,
odp_time_cycles_to_ns(stats->s.idle_cycles)/1000/1000);
return NULL;
}
