/*******************************************************************//**
Shows the time elapsed and usage statistics since the last reset of a
speedo. */
UNIV_INTERN
void
speedo_show(
/*========*/
const speedo_t* speedo) /*!< in: speedo */
{
struct rusage ru_now;
struct timeval tv_now;
struct timeval tv_diff;
getrusage(RUSAGE_SELF, &ru_now);
gettimeofday(&tv_now, NULL);
#define PRINT_TIMEVAL(prefix, tvp) \
fprintf(stderr, "%s% 5ld.%06ld sec\n", \
prefix, (tvp)->tv_sec, (tvp)->tv_usec)
timersub(&tv_now, &speedo->tv, &tv_diff);
PRINT_TIMEVAL("real", &tv_diff);
timersub(&ru_now.ru_utime, &speedo->ru.ru_utime, &tv_diff);
PRINT_TIMEVAL("user", &tv_diff);
timersub(&ru_now.ru_stime, &speedo->ru.ru_stime, &tv_diff);
PRINT_TIMEVAL("sys ", &tv_diff);
}
int main(int argc, char *argv[]) {
if (argc != 3) {
printf("%s <num rands> <num threads>\n", argv[0]);
exit(1);
}
uint64_t i, j, num_rands = atoi(argv[1]);
uint64_t num_threads = atoi(argv[2]);
srand(time(NULL));
TClient *clients = malloc(sizeof(TClient) * num_threads);
ThreadArgs **args = malloc(sizeof(ThreadArgs *) * num_threads);
for (i = 0; i < num_threads; i++) {
init_thread_client(&clients[i]);
args[i] = malloc(sizeof(ThreadArgs));
args[i]->i = i;
args[i]->num_threads = num_threads;
args[i]->num_rands = num_rands;
}
struct timeval rand32_r, rand128_r, normal_r;// result
struct timeval rand32_s, rand128_s, normal_s;// start
struct timeval rand32_e, rand128_e, normal_e;// end
gettimeofday(&rand32_s, NULL);
for (j = 0; j < num_threads; j++)
tc_add_func(&clients[j], rand32_new, (void *) args[j]);
for (j = 0; j < num_threads; j++)
tc_join(&clients[j]);
gettimeofday(&rand32_e, NULL);
timeval_subtract(&rand32_r, &rand32_e, &rand32_s);
gettimeofday(&rand128_s, NULL);
for (j = 0; j < num_threads; j++)
tc_add_func(&clients[j], rand128_new, (void *) args[j]);
for (j = 0; j < num_threads; j++)
tc_join(&clients[j]);
gettimeofday(&rand128_e, NULL);
timeval_subtract(&rand128_r, &rand128_e, &rand128_s);
gettimeofday(&normal_s, NULL);
for (j = 0; j < num_threads; j++)
tc_add_func(&clients[j], normal_rand, (void *) args[j]);
for (j = 0; j < num_threads; j++)
tc_join(&clients[j]);
gettimeofday(&normal_e, NULL);
timeval_subtract(&normal_r, &normal_e, &normal_s);
printf("rand32: ");
PRINT_TIMEVAL(rand32_r);
printf("\n");
printf("rand128: ");
PRINT_TIMEVAL(rand128_r);
printf("\n");
printf("normal: ");
PRINT_TIMEVAL(normal_r);
printf("\n");
for (i = 0; i < num_threads; i++) {
tc_free(&clients[i]);
free(args[i]);
}
free(args);
free(clients);
return 0;
}
