diff options
| -rw-r--r-- | nserver/src/stats.c | 25 | ||||
| -rw-r--r-- | nserver/src/stats.h | 2 |
2 files changed, 20 insertions, 7 deletions
diff --git a/nserver/src/stats.c b/nserver/src/stats.c index 68b99cc..6b99e7e 100644 --- a/nserver/src/stats.c +++ b/nserver/src/stats.c @@ -44,11 +44,24 @@ void Stats_sample(Stats *st, double s) st->n += 1; } -void Stats_dump(Stats *st) +char *Stats_dump(Stats *st) { - fprintf(stderr, - "sum: %f, sumsq: %f, n: %ld, " - "min: %f, max: %f, mean: %f, stddev: %f", - st->sum, st->sumsq, st->n, st->min, st->max, Stats_mean(st), - Stats_stddev(st)); + size_t char_sz = sizeof(char); + size_t dstr_len = 280 * char_sz; + + // allocate space for dump string. + char *dstr = calloc(dstr_len, char_sz); + check_mem(dstr); + + // dump into dump str. + int rc = snprintf(dstr, dstr_len, + "sum: %f, sumsq: %f, n: %ld, " + "min: %f, max: %f, mean: %f, stddev: %f", + st->sum, st->sumsq, st->n, st->min, st->max, + Stats_mean(st), Stats_stddev(st)); + check(rc > 0, "stats dump failed"); + + return dstr; + error: + return NULL; } diff --git a/nserver/src/stats.h b/nserver/src/stats.h index 997a505..776eb21 100644 --- a/nserver/src/stats.h +++ b/nserver/src/stats.h @@ -17,7 +17,7 @@ Stats *Stats_create(); void Stats_sample(Stats *st, double s); -void Stats_dump(Stats *st); +char *Stats_dump(Stats *st); static inline double Stats_mean(Stats *st) { |