From 78a5ef9d2c034b5a6314fb66279160331d25cc73 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Sat, 25 Aug 2018 19:36:06 +0200 Subject: [PATCH] ping: use setitimer() instead of ualarm() function old new delta sendping_tail 218 265 +47 ualarm 79 - -79 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 1/0 up/down: 47/-79) Total: -32 bytes Signed-off-by: Denys Vlasenko --- networking/ping.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/networking/ping.c b/networking/ping.c index a579ea4ae..570184fee 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -485,9 +485,15 @@ static void sendping_tail(void (*sp)(int), int size_pkt) bb_error_msg_and_die(bb_msg_write_error); if (pingcount == 0 || G.ntransmitted < pingcount) { - /* Didn't send all pings yet - schedule next in 1s */ + /* Didn't send all pings yet - schedule next in -i SEC interval */ + struct itimerval i; signal(SIGALRM, sp); - ualarm(G.interval_us, 0); + /*ualarm(G.interval_us, 0); - does not work for >=1sec on some libc */ + i.it_interval.tv_sec = 0; + i.it_interval.tv_usec = 0; + i.it_value.tv_sec = G.interval_us / 1000000; + i.it_value.tv_usec = G.interval_us % 1000000; + setitimer(ITIMER_REAL, &i, NULL); } else { /* -c NN, and all NN are sent */ /* Wait for the last ping to come back. * -W timeout: wait for a response in seconds. -- 2.25.1