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; }