xdpdump: Flush stdout after finishing output

Make sure to flush the stdout stream when exiting, before outputting the
end-of-run stats. This avoids output being interleaved because the stats
are written to stderr before stdout has finished flushing.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>

diff --git a/xdp-dump/xdpdump.c b/xdp-dump/xdpdump.c
index b8f1773583edbf1597a71942d477bee7aeaf61c5..91820858833d313fc5b25da64fc06f0e01700f50 100644 (file)
--- a/xdp-dump/xdpdump.c
+++ b/xdp-dump/xdpdump.c
@@ -670,6 +670,7 @@ static bool capture_on_legacy_interface(struct dumpopt *cfg)
        }
        exit_pcap = NULL;
        rc = true;
+       fflush(stdout);
 
        fprintf(stderr, "\n%"PRIu64" packets captured\n", captured_packets);
        if (pcap_stats(pcap, &ps) == 0) {
@@ -1859,6 +1860,7 @@ static bool capture_on_interface(struct dumpopt *cfg)
        perf_buffer__consume(perf_buf);
 #endif
 
+       fflush(stdout);
        fprintf(stderr, "\n%"PRIu64" packets captured\n",
                perf_ctx.captured_packets);
        fprintf(stderr, "%"PRIu64" packets dropped by perf ring\n",