diff options
| -rw-r--r-- | src/hackbench/hackbench.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/hackbench/hackbench.c b/src/hackbench/hackbench.c index c21b4db..34a27ef 100644 --- a/src/hackbench/hackbench.c +++ b/src/hackbench/hackbench.c @@ -443,6 +443,7 @@ int main(int argc, char *argv[]) struct timeval start, stop, diff; int readyfds[2], wakefds[2]; char dummy; + int timer_started = 0; struct sched_param sp; process_options (argc, argv); @@ -489,9 +490,10 @@ int main(int argc, char *argv[]) reap_workers(child_tab, total_children, 1); barf("Reading for readyfds"); } - + gettimeofday(&start, NULL); - + timer_started = 1; + /* Kick them off */ if (write(wakefds[1], &dummy, 1) != 1) { reap_workers(child_tab, total_children, 1); @@ -510,8 +512,12 @@ int main(int argc, char *argv[]) gettimeofday(&stop, NULL); /* Print time... */ - timersub(&stop, &start, &diff); - printf("Time: %lu.%03lu\n", diff.tv_sec, diff.tv_usec/1000); + if (timer_started) { + timersub(&stop, &start, &diff); + printf("Time: %lu.%03lu\n", diff.tv_sec, diff.tv_usec/1000); + } + else + fprintf(stderr, "No measurements available\n"); free(child_tab); exit(0); } |