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Sample Applications User Guide, Release 2.0.0
}
}
if (lcore_queue_conf[i].rx_port_list[j] == pair_port) {
pair_lcore = i;
find_pair_lcore = 1;
break;
}
if (find_lcore && find_pair_lcore)
break;
}
if (!find_lcore || !find_pair_lcore)
rte_exit(EXIT_FAILURE, "Not find port=%d pair\\n", portid);
printf("lcore %u and %u paired\\n", lcore, pair_lcore);
}
lcore_resource[lcore].pair_id = pair_lcore;
lcore_resource[pair_lcore].pair_id = lcore;
Before launching the slave process, it is necessary to set up the communication channel between the master and slave so that the master can notify the slave if its peer process with the
dependency exited. In addition, the master needs to register a callback function in the case
where a specific slave exited.
for (i = 0; i < RTE_MAX_LCORE; i++) {
if (lcore_resource[i].enabled) {
/* Create ring for master and slave communication */
ret = create_ms_ring(i);
if (ret != 0)
rte_exit(EXIT_FAILURE, "Create ring for lcore=%u failed",i);
}
}
if (flib_register_slave_exit_notify(i,slave_exit_cb) != 0)
rte_exit(EXIT_FAILURE, "Register master_trace_slave_exit failed");
After launching the slave process, the master waits and prints out the port statics periodically.
If an event indicating that a slave process exited is detected, it sends the STOP command to
the peer and waits until it has also exited. Then, it tries to clean up the execution environment
and prepare new resources. Finally, the new slave instance is launched.
while (1) {
sleep(1);
cur_tsc = rte_rdtsc();
diff_tsc = cur_tsc - prev_tsc;
/* if timer is enabled */
if (timer_period > 0) {
/* advance the timer */
timer_tsc += diff_tsc;
/* if timer has reached its timeout */
if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
print_stats();
/* reset the timer */
19.1. Example Applications
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