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114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "lib_acl.h"
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#include "fiber/libfiber.h"
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#include "stamp.h"
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static void test_gettimeofday(void)
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{
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struct timeval begin1, end1;
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struct timeval begin2, end2;
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double diff1, diff2;
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acl_fiber_gettimeofday(&begin1, NULL);
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gettimeofday(&begin2, NULL);
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acl_fiber_gettimeofday(&begin1, NULL);
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usleep(100000);
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acl_fiber_gettimeofday(&end1, NULL);
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gettimeofday(&end2, NULL);
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diff1 = stamp_sub(&end1, &begin1);
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diff2 = stamp_sub(&end2, &begin2);
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printf("thread-%ld: gettimeofday: diff1=%.3f, diff2=%.3f, tv_sec=%ld,"
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" %ld, tv_usec=%ld, %ld, now=%ld\r\n", (long) pthread_self(),
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diff1, diff2, end1.tv_sec, end2.tv_sec, end1.tv_usec,
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end2.tv_usec, time(NULL));
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}
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static void test_benchmark(void)
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{
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struct timeval begin, end, dummy;
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struct timespec ts;
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double diff;
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int i, max = 100000000;
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test_gettimeofday();
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gettimeofday(&begin, NULL);
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for (i = 0; i < max; i++) {
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acl_fiber_gettimeofday(&dummy, NULL);
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}
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gettimeofday(&end, NULL);
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diff = stamp_sub(&end, &begin);
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printf("thread-%ld: acl_fiber_gettimeofday: max=%d, diff=%.2f\r\n",
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(long) pthread_self(), max, diff);
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gettimeofday(&begin, NULL);
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for (i = 0; i < max; i++) {
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gettimeofday(&dummy, NULL);
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}
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gettimeofday(&end, NULL);
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diff = stamp_sub(&end, &begin);
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printf("thread-%ld: gettimeofday: max=%d, diff=%.2f\r\n",
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(long) pthread_self(), max, diff);
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gettimeofday(&begin, NULL);
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for (i = 0; i < max; i++) {
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clock_gettime(CLOCK_REALTIME, &ts);
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}
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gettimeofday(&end, NULL);
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diff = stamp_sub(&end, &begin);
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printf("thread-%ld: clock_gettime: max=%d, diff=%.2f\r\n",
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(long) pthread_self(), max, diff);
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}
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static void *bench_thread(void *arg)
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{
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(void) arg;
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test_benchmark();
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return NULL;
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}
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static void usage(const char *progname)
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{
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printf("usage: %s -h [help] -c nthreads\r\n", progname);
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}
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int main(int argc, char *argv[])
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{
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#define MAX 10
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int i, ch, nthreads = 1;
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pthread_t tids[MAX];
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test_gettimeofday();
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while ((ch = getopt(argc, argv, "hc:")) > 0) {
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switch (ch) {
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case 'h':
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usage(argv[0]);
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return 0;
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case 'c':
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nthreads = atoi(optarg);
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if (nthreads <= 0 || nthreads > MAX) {
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nthreads = 1;
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}
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break;
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default:
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break;
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}
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}
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for (i = 0; i < nthreads; i++) {
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pthread_create(&tids[i], NULL, bench_thread, NULL);
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}
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for (i = 0; i < nthreads; i++) {
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pthread_join(tids[i], NULL);
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}
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return 0;
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}
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