ClockApp::ClockApp(int argc, char** argv, ClockConfig* config, GdkPixbuf* pixbuf) :
DockApp(argc, argv, "SpaceClock", pixbuf),
rgb(new Rgb_buffer(64, 64))
{
ras = make_bad_rasterizer(rgb);
cfg = config;
back = new Rgb_buffer(pixbuf);
*rgb = *back;
//rgb->clear();
cd = new ClockDraw(cfg, rgb, ras);
last_exact_second = -1;
if (cfg->get_hand(ClockConfig::second_hand).exact)
{
set_sleep_time(10000);
}
else
{
set_sleep_time(100000);
}
}
/*
* Measurement function. Where the most interesting stuff happens.
*/
int doMeasurement()
{
struct timespec sleep_time, remain_time;
//struct timeval begin, end;
struct timespec begin, end;
int delay, max_delay;
int i, j = 0, data_length;
time_measure *data;
double diff_time_precise;
//!!int diff_time;
data_length = ((max_usec - min_usec) / step_usec) + 1;
data = malloc(sizeof(time_measure) * 10000);
if (data == NULL) {
perror("Error allocating memory.");
return -1;
}
for (sleep_usec = min_usec; sleep_usec <= max_usec; sleep_usec += step_usec) {
max_delay = 0;
set_sleep_time(sleep_usec, &sleep_time);
if (verbose) {
printf("============================\n");
printf("Starting measurement: Sleep time = %d usec, loops = %d\n", sleep_usec, loop_count);
printf("============================\n");
printf("tv_sec = %ld, tv_nsec = %ld\n", sleep_time.tv_sec, sleep_time.tv_nsec);
}
for (i = 0; i < loop_count; ++i) {
int ret;
//!!gettimeofday(&begin, NULL);
clock_gettime(CLOCK_MONOTONIC, &begin);
ret = clock_nanosleep(CLOCK_MONOTONIC, 0, &sleep_time, &remain_time);
if (ret) {
fprintf(stderr, "Sleep returned error: %d.\n", ret);
return -1;
}
//!!gettimeofday(&end, NULL);
clock_gettime(CLOCK_MONOTONIC, &end);
diff_time_precise = get_time_diff_usec_precise(&begin, &end);
//!!diff_time = get_time_diff_usec(&begin, &end);
//!!!delay = abs(diff_time - sleep_usec);
delay = abs((int) diff_time_precise - sleep_usec);
if (delay > max_delay)
max_delay = delay;
if (verbose) {
//!!printf("value: %d usec, delay: %d usec, raw_data: %d usec\n",
//!! diff_time, delay, diff_time);
printf("value: %d usec, delay: %d usec, raw_data: %f usec\n",
(int) diff_time_precise, delay, diff_time_precise);
}
}
if (verbose) {
printf("============================\n");
printf("Max delay = %d usec\n", max_delay);
printf("============================\n");
}
data[j].sleep_usec = sleep_usec;
data[j].max_delay = max_delay;
++j;
}
for (i = 0; i < data_length; ++i)
writeToFile(out_file, data[i].sleep_usec, data[i].max_delay);
free(data);
return 0;
}
