pollution: itimerval
struct itimerval { struct timeval it_interval; struct timeval it_value; }; 

pollution: itimerval
pollution: getitimer
int getitimer(int, struct itimerval *); 

pollution: utimes
int utimes(const char *, const struct timeval *); 

pollution: itimerval
pollution: itimerval
pollution: setitimer
int setitimer(int, const struct itimerval *restrict, struct itimerval *restrict); 

pollution: gettimeofday
int gettimeofday(struct timeval *restrict, void *restrict); 

pollution: ITIMER_REALPROF
#define ITIMER_REALPROF 3

pollution: ITIMER_VIRTUAL
#define ITIMER_VIRTUAL 1

pollution: ITIMER_PROF
#define ITIMER_PROF 2