[dpdk-dev] [PATCH] telemetry: fix build on FreeBSD < 12.2

[Thomas Monjalon]

The function pthread_setname_np() was originally not available on
FreeBSD. It has been added in FreeBSD 12.2:
https://svnweb.freebsd.org/base?view=revision&revision=362264

The EAL implementation of rte_thread_setname() is duplicated
in the telemetry library, which does not depend on EAL,
so the compilation is safe in all systems.

Fixes: 5da7736f8c53 ("telemetry: set socket listener thread name")

Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
---
 lib/telemetry/telemetry.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/lib/telemetry/telemetry.c b/lib/telemetry/telemetry.c
index 0b2993396a..386d0080bc 100644
--- a/lib/telemetry/telemetry.c
+++ b/lib/telemetry/telemetry.c
@@ -432,6 +432,18 @@ create_socket(char *path)
 	return -1;
 }
 
+static void
+set_thread_name(pthread_t id __rte_unused, const char *name __rte_unused)
+{
+#if defined RTE_EXEC_ENV_LINUX && defined __GLIBC__ && defined __GLIBC_PREREQ
+#if __GLIBC_PREREQ(2, 12)
+	pthread_setname_np(id, name);
+#endif
+#elif defined RTE_EXEC_ENV_FREEBSD
+	pthread_set_name_np(id, name);
+#endif
+}
+
 static int
 telemetry_legacy_init(void)
 {
@@ -463,7 +475,7 @@ telemetry_legacy_init(void)
 		return -1;
 	}
 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
-	pthread_setname_np(t_old, "telemetry-v1");
+	set_thread_name(t_old, "telemetry-v1");
 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
 	return 0;
 }
@@ -502,7 +514,7 @@ telemetry_v2_init(void)
 		return -1;
 	}
 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
-	pthread_setname_np(t_new, "telemetry-v2");
+	set_thread_name(t_new, "telemetry-v2");
 	atexit(unlink_sockets);
 
 	return 0;
-- 
2.31.1