diff options
Diffstat (limited to 'src/bench.h')
| -rw-r--r-- | src/bench.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/src/bench.h b/src/bench.h index 668ec39f71..0559b3e853 100644 --- a/src/bench.h +++ b/src/bench.h @@ -17,21 +17,40 @@ static double gettimedouble(void) { return tv.tv_usec * 0.000001 + tv.tv_sec; } -void run_benchmark(void (*benchmark)(void*), void (*setup)(void*), void (*teardown)(void*), void* data, int count, int iter) { +void print_number(double x) { + double y = x; + int c = 0; + if (y < 0.0) y = -y; + while (y < 100.0) { + y *= 10.0; + c++; + } + printf("%.*f", c, x); +} + +void run_benchmark(char *name, void (*benchmark)(void*), void (*setup)(void*), void (*teardown)(void*), void* data, int count, int iter) { + int i; double min = HUGE_VAL; double sum = 0.0; double max = 0.0; - for (int i = 0; i < count; i++) { + for (i = 0; i < count; i++) { + double begin, total; if (setup) setup(data); - double begin = gettimedouble(); + begin = gettimedouble(); benchmark(data); - double total = gettimedouble() - begin; + total = gettimedouble() - begin; if (teardown) teardown(data); if (total < min) min = total; if (total > max) max = total; sum += total; } - printf("min %.3fus / avg %.3fus / max %.3fus\n", min * 1000000.0 / iter, (sum / count) * 1000000.0 / iter, max * 1000000.0 / iter); + printf("%s: min ", name); + print_number(min * 1000000.0 / iter); + printf("us / avg "); + print_number((sum / count) * 1000000.0 / iter); + printf("us / avg "); + print_number(max * 1000000.0 / iter); + printf("us\n"); } #endif |