prefer mlockfile

testTimer/timerTest.c

@@ -44,10 +44,10 @@ sigHandler(int signo, siginfo_t * si, void * /* ucontext_t */ uap)
 			/* timer timeout */
 			SLIST_FOREACH(np, &head, entries) {
 				if (np && np->code == si->si_value.sival_int) {
-					flock(1, LOCK_EX);
+					flockfile(stdout);
 					printf("%s", np->name);
 					fflush(stdout);
-					flock(1, LOCK_UN);
+					funlockfile(stdout);
 					break;
 				}
 			}