#include #include #include #include int main (int argc, char *argv[]) { int i; struct timeval tv[100][2]; int us = 0; if (argc == 2) us = atoi(argv[1]); for (i=0; i<100; i++) { gettimeofday(&tv[i][0], NULL); setsid(); gettimeofday(&tv[i][1], NULL); if (us) usleep(us); } for (i=0; i<100; i++) { // change last 4 chars for correctly sorting even if the // time stamps are completely same. printf("%8d%06d :%02d appl\n", tv[i][0].tv_sec, tv[i][0].tv_usec, i); printf("%8d%06d :%02d prog\n", tv[i][1].tv_sec, tv[i][1].tv_usec, i); } return 0; }