/* main.c - IOMultiplexer
* Copyright (C) 2012 Philipp Kreil (pk910)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
#include
#include "../../IOHandler.h"
#define TEST_DURATION 100
static IOHANDLER_CALLBACK(io_callback);
static IOHANDLER_LOG_BACKEND(io_log);
static struct timeval test_clock1, test_clock2;
static int timercount;
static void add_timer(int ms) {
struct timeval timeout;
gettimeofday(&timeout, NULL);
timeout.tv_usec += (ms % 1000) * 1000;
timeout.tv_sec += (ms / 1000);
if(timeout.tv_usec > 1000000) {
timeout.tv_usec -= 1000000;
timeout.tv_sec++;
}
iohandler_timer(timeout, io_callback);
}
int main(int argc, char *argv[]) {
iolog_backend = io_log;
iohandler_set(IOHANDLER_SETTING_HIGH_PRECISION_TIMER, 1);
gettimeofday(&test_clock1, NULL);
gettimeofday(&test_clock2, NULL);
add_timer(TEST_DURATION);
timercount = 0;
printf("[timer 0] %ld.%ld\n", test_clock1.tv_sec, test_clock1.tv_usec);
while(1) {
iohandler_poll();
}
}
static IOHANDLER_CALLBACK(io_callback) {
struct timeval curr_time;
int diff1;
double diff2;
switch(event->type) {
case IOEVENT_TIMEOUT:
add_timer(TEST_DURATION);
timercount++;
gettimeofday(&curr_time, NULL);
diff1 = (curr_time.tv_sec - test_clock1.tv_sec) * 1000 + ((curr_time.tv_usec - test_clock1.tv_usec) / 1000);
diff2 = (curr_time.tv_sec - test_clock2.tv_sec) * 1000 + ((curr_time.tv_usec - test_clock2.tv_usec) / 1000.0);
diff2 -= (timercount * TEST_DURATION);
gettimeofday(&test_clock1, NULL);
printf("[timer %03d] %ld.%06ld [%d ms] accuracy: %f ms\n", timercount, curr_time.tv_sec, curr_time.tv_usec, diff1, diff2);
break;
default:
break;
}
}
static IOHANDLER_LOG_BACKEND(io_log) {
//printf("%s", line);
}