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/* -*- c-file-style: "GNU" -*- */
/*
* Copyright (C) CNRS, INRIA, Université Bordeaux 1, Télécom SudParis
* See COPYING in top-level directory.
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdarg.h>
// Debugging part, print out only if debugging level of the system is verbose or more
int _debug = -77;
void debug(char *fmt, ...) {
if (_debug == -77) {
char *buf = getenv("EZTRACE_DEBUG");
if (buf == NULL)
_debug = 0;
else
_debug = atoi(buf);
}
if (_debug >= 0) { // debug verbose mode
va_list va;
va_start(va, fmt);
vfprintf(stdout, fmt, va);
va_end(va);
}
}
// end of debugging part
#define microsleep(us) do { struct timespec tm; tm.tv_sec = (time_t)us / 1000; tm.tv_nsec = (long)(us % 1000) * 1000; nanosleep(&tm, NULL); } while(0)
int mafunc(int n) {
debug("i sleep %d microsec\n", n);
microsleep(n);
return EXIT_SUCCESS;
}
int main() {
int i = 0;
debug("hello i m in main an i will wait 4 microsec\n");
microsleep(4);
for (i = 0; i < 4; i++) {
mafunc(i);
debug("main sleep 1 microsec\n");
microsleep(1);
}
return EXIT_SUCCESS;
}
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