From: Prateek Agarwal <pratekag@gmail.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, Prateek Agarwal <pratekag@gmail.com>,
Prateek Agarwal <prateekag@cse.iitb.ac.in>
Subject: [dpdk-dev] [PATCH] Remove printf from signal handler.
Date: Fri, 4 Dec 2020 23:21:51 +0530 [thread overview]
Message-ID: <20201204175151.11868-1-pratekag@gmail.com> (raw)
printf is not async-signal safe. Using printf in signal handlers may lead to deadlock. Removed printf from signal handlers present in several applications.
Signed-off-by: Prateek Agarwal <prateekag@cse.iitb.ac.in>
---
app/pdump/main.c | 2 --
app/test-eventdev/evt_main.c | 4 ----
app/test-flow-perf/main.c | 3 ---
app/test-pmd/testpmd.c | 2 --
app/test/test_pmd_perf.c | 1 -
5 files changed, 12 deletions(-)
diff --git a/app/pdump/main.c b/app/pdump/main.c
index b34bf3353..380f0ea0f 100644
--- a/app/pdump/main.c
+++ b/app/pdump/main.c
@@ -573,8 +573,6 @@ static void
signal_handler(int sig_num)
{
if (sig_num == SIGINT) {
- printf("\n\nSignal %d received, preparing to exit...\n",
- sig_num);
quit_signal = 1;
}
}
diff --git a/app/test-eventdev/evt_main.c b/app/test-eventdev/evt_main.c
index a8d304bab..51d5897f8 100644
--- a/app/test-eventdev/evt_main.c
+++ b/app/test-eventdev/evt_main.c
@@ -22,12 +22,8 @@ signal_handler(int signum)
{
int i;
static uint8_t once;
-
if ((signum == SIGINT || signum == SIGTERM) && !once) {
once = true;
- printf("\nSignal %d received, preparing to exit...\n",
- signum);
-
if (test != NULL) {
/* request all lcores to exit from the main loop */
*(int *)test->test_priv = true;
diff --git a/app/test-flow-perf/main.c b/app/test-flow-perf/main.c
index 03d01a8b5..aeb0ef3b0 100644
--- a/app/test-flow-perf/main.c
+++ b/app/test-flow-perf/main.c
@@ -1001,9 +1001,6 @@ static void
signal_handler(int signum)
{
if (signum == SIGINT || signum == SIGTERM) {
- printf("\n\nSignal %d received, preparing to exit...\n",
- signum);
- printf("Error: Stats are wrong due to sudden signal!\n\n");
force_quit = true;
}
}
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 33fc0fddf..7ec87e7fd 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -3794,8 +3794,6 @@ static void
signal_handler(int signum)
{
if (signum == SIGINT || signum == SIGTERM) {
- printf("\nSignal %d received, preparing to exit...\n",
- signum);
#ifdef RTE_LIB_PDUMP
/* uninitialize packet capture framework */
rte_pdump_uninit();
diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c
index 4db816a36..58cb84401 100644
--- a/app/test/test_pmd_perf.c
+++ b/app/test/test_pmd_perf.c
@@ -319,7 +319,6 @@ signal_handler(int signum)
{
/* USR1 signal, stop testing */
if (signum == SIGUSR1) {
- printf("Force Stop!\n");
stop = 1;
}
--
2.25.1
next reply other threads:[~2020-12-04 17:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-04 17:51 Prateek Agarwal [this message]
2020-12-08 2:58 ` Li, Xiaoyun
2020-12-10 0:28 ` prateekag
2020-12-10 3:14 ` Li, Xiaoyun
2020-12-10 9:24 ` Ananyev, Konstantin
2020-12-11 13:38 ` prateekag
2023-06-13 0:11 ` [PATCH] app: do not call printf in signal handlers Stephen Hemminger
2023-06-15 20:14 ` Tyler Retzlaff
2023-06-28 0:44 ` Thomas Monjalon
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