diff options
Diffstat (limited to 'microbench')
| -rw-r--r-- | microbench/util.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/microbench/util.c b/microbench/util.c index ff1c3fb3..dbd4bc19 100644 --- a/microbench/util.c +++ b/microbench/util.c @@ -95,7 +95,7 @@ benchmark_function (void (*testfunc) (void), unsigned count) return counter_diff (&start, &end) / count ; } /* benchmark_function */ -#else +#elif defined HAVE_CLOCK_GETTIME #include <time.h> #include <sys/time.h> @@ -131,6 +131,42 @@ benchmark_function (void (*testfunc) (void), unsigned count) return timespec_diff (&start, &end) / count ; } /* benchmark_function */ +#else + +#include <time.h> +#include <sys/time.h> + +static double +timeval_diff (const struct timeval * start, const struct timeval * end) +{ struct timeval diff; + + if (end->tv_usec - start->tv_usec < 0) + { diff.tv_sec = end->tv_sec - start->tv_sec - 1 ; + diff.tv_usec = 1000000 + end->tv_usec - start->tv_usec ; + } + else + { diff.tv_sec = end->tv_sec - start->tv_sec ; + diff.tv_usec = end->tv_usec-start->tv_usec ; + } ; + + return diff.tv_sec + 1e-6 * diff.tv_usec ; +} + +double +benchmark_function (void (*testfunc) (void), unsigned count) +{ struct timeval start, end; + unsigned k ; + + gettimeofday(&start, NULL); + + for (k = 0 ; k < count ; k++) + testfunc () ; + + gettimeofday(&end, NULL); + + return timeval_diff (&start, &end) / count ; +} /* benchmark_function */ + #endif static int |