[dpdk-dev] [PATCH v4] distributor_app: gracefull shutdown of tx/rx threads on SIGINT

[reshmapa]

From: Reshma Pattan <reshma.pat...@intel.com>

        *Handled gracefull shutdown of rx and tx threads upon SIGINT.
        *Gracefull shutdown of worker threads will be handled in
         future enhancements.

        Signed-off-by: Reshma Pattan <reshma.pattan at intel.com>
---
 examples/distributor_app/main.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/examples/distributor_app/main.c b/examples/distributor_app/main.c
index f555d93..b6fa063 100644
--- a/examples/distributor_app/main.c
+++ b/examples/distributor_app/main.c
@@ -85,6 +85,7 @@

 /* mask of enabled ports */
 static uint32_t enabled_port_mask = 0;
+volatile uint8_t quit_signal = 0;

 static volatile struct app_stats {
        struct {
@@ -221,7 +222,7 @@ struct lcore_params {
        struct rte_ring *r;
 };

-static __attribute__((noreturn)) void
+static int
 lcore_rx(struct lcore_params *p)
 {
        struct rte_distributor *d = p->d;
@@ -244,7 +245,7 @@ lcore_rx(struct lcore_params *p)

        printf("\nCore %u doing packet RX.\n", rte_lcore_id());
        port = 0;
-       for (;;) {
+       while (!quit_signal) {
                /* skip ports that are not enabled */
                if ((enabled_port_mask & (1 << port)) == 0) {
                        if (++port == nb_ports)
@@ -307,7 +308,7 @@ flush_all_ports(struct output_buffer *tx_buffers, uint8_t 
nb_ports)
        }
 }

-static __attribute__((noreturn)) void
+static int
 lcore_tx(struct rte_ring *in_r)
 {
        static struct output_buffer tx_buffers[RTE_MAX_ETHPORTS];
@@ -328,7 +329,7 @@ lcore_tx(struct rte_ring *in_r)
        }

        printf("\nCore %u doing packet TX.\n", rte_lcore_id());
-       for (;;) {
+       while (!quit_signal) {
                for (port = 0; port < nb_ports; port++) {
                        /* skip ports that are not enabled */
                        if ((enabled_port_mask & (1 << port)) == 0)
@@ -370,7 +371,6 @@ lcore_tx(struct rte_ring *in_r)
        }
 }

-
 static __attribute__((noreturn)) void
 lcore_worker(struct lcore_params *p)
 {
@@ -415,7 +415,7 @@ int_handler(int sig_num)
                printf(" - Out Errs:  %"PRIu64"\n", eth_stats.oerrors);
                printf(" - Mbuf Errs: %"PRIu64"\n", eth_stats.rx_nombuf);
        }
-       exit(0);
+       quit_signal = 1;
 }

 /* display usage */
-- 
1.7.4.1