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

[reshmapa <reshma.pattan@intel.com>]

From: Reshma Pattan <reshma.pattan@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@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