1 /* main.c - IOMultiplexer
2 * Copyright (C) 2012 Philipp Kreil (pk910)
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #include "../../IOHandler.h"
21 #define TEST_DURATION 100
23 static IOHANDLER_CALLBACK(io_callback);
24 static IOHANDLER_LOG_BACKEND(io_log);
26 static struct timeval test_clock1, test_clock2;
27 static int timercount;
29 static void add_timer(int ms) {
30 struct timeval timeout;
31 gettimeofday(&timeout, NULL);
32 timeout.tv_usec += (ms % 1000) * 1000;
33 timeout.tv_sec += (ms / 1000);
34 if(timeout.tv_usec > 1000000) {
35 timeout.tv_usec -= 1000000;
38 iohandler_timer(timeout, io_callback);
41 int main(int argc, char *argv[]) {
42 iolog_backend = io_log;
44 gettimeofday(&test_clock1, NULL);
45 gettimeofday(&test_clock2, NULL);
46 add_timer(TEST_DURATION);
49 printf("[timer 0] %ld.%ld\n", test_clock1.tv_sec, test_clock1.tv_usec);
56 static IOHANDLER_CALLBACK(io_callback) {
57 struct timeval curr_time;
62 add_timer(TEST_DURATION);
64 gettimeofday(&curr_time, NULL);
65 diff1 = (curr_time.tv_sec - test_clock1.tv_sec) * 1000 + ((curr_time.tv_usec - test_clock1.tv_usec) / 1000);
66 diff2 = (curr_time.tv_sec - test_clock2.tv_sec) * 1000 + ((curr_time.tv_usec - test_clock2.tv_usec) / 1000.0);
67 diff2 -= (timercount * TEST_DURATION);
68 gettimeofday(&test_clock1, NULL);
69 printf("[timer %03d] %ld.%06ld [%d ms] accuracy: %f ms\n", timercount, curr_time.tv_sec, curr_time.tv_usec, diff1, diff2);
76 static IOHANDLER_LOG_BACKEND(io_log) {