diff options
Diffstat (limited to 'src/bootchart/bootchart.c')
| -rw-r--r-- | src/bootchart/bootchart.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c index 3360bc85be..83ad90c222 100644 --- a/src/bootchart/bootchart.c +++ b/src/bootchart/bootchart.c @@ -338,10 +338,9 @@ int main(int argc, char *argv[]) { * - child logs data */ if (getpid() == 1) { - if (fork()) { + if (fork()) /* parent */ execl(arg_init_path, arg_init_path, NULL); - } } argv[0][0] = '@'; @@ -367,7 +366,7 @@ int main(int argc, char *argv[]) { struct timespec n; double uptime; - clock_gettime(CLOCK_BOOTTIME, &n); + clock_gettime(clock_boottime_or_monotonic(), &n); uptime = (n.tv_sec + (n.tv_nsec / (double) NSEC_PER_SEC)); log_start = gettime_ns(); @@ -387,9 +386,6 @@ int main(int argc, char *argv[]) { for (samples = 0; !exiting && samples < arg_samples_len; samples++) { int res; double sample_stop; - struct timespec req; - time_t newint_s; - long newint_ns; double elapsed; double timeleft; @@ -427,32 +423,30 @@ int main(int argc, char *argv[]) { elapsed = (sample_stop - sampledata->sampletime) * 1000000000.0; timeleft = interval - elapsed; - newint_s = (time_t)(timeleft / 1000000000.0); - newint_ns = (long)(timeleft - (newint_s * 1000000000.0)); - /* * check if we have not consumed our entire timeslice. If we * do, don't sleep and take a new sample right away. * we'll lose all the missed samples and overrun our total * time */ - if (newint_ns > 0 || newint_s > 0) { - req.tv_sec = newint_s; - req.tv_nsec = newint_ns; + if (timeleft > 0) { + struct timespec req; + + req.tv_sec = (time_t)(timeleft / 1000000000.0); + req.tv_nsec = (long)(timeleft - (req.tv_sec * 1000000000.0)); res = nanosleep(&req, NULL); if (res) { - if (errno == EINTR) { + if (errno == EINTR) /* caught signal, probably HUP! */ break; - } log_error_errno(errno, "nanosleep() failed: %m"); return EXIT_FAILURE; } } else { overrun++; /* calculate how many samples we lost and scrap them */ - arg_samples_len -= (int)(newint_ns / interval); + arg_samples_len -= (int)(-timeleft / interval); } LIST_PREPEND(link, head, sampledata); } @@ -463,10 +457,7 @@ int main(int argc, char *argv[]) { ps = ps->next_ps; ps->schedstat = safe_close(ps->schedstat); ps->sched = safe_close(ps->sched); - if (ps->smaps) { - fclose(ps->smaps); - ps->smaps = NULL; - } + ps->smaps = safe_fclose(ps->smaps); } if (!of) { |