78a5ef9d2
Denys Vlasenko
2018-08-25
Subject
ping: use setitimer() instead of ualarm()
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networking/ping.c+8 -2
| @@ -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. | |