| #ifndef _SYS_TIME_H |
| #define _SYS_TIME_H |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include <features.h> |
| |
| #include <sys/select.h> |
| |
| int gettimeofday (struct timeval *__restrict, void *__restrict); |
| |
| #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \ |
| || defined(_BSD_SOURCE) |
| |
| #define ITIMER_REAL 0 |
| #define ITIMER_VIRTUAL 1 |
| #define ITIMER_PROF 2 |
| |
| struct itimerval |
| { |
| struct timeval it_interval; |
| struct timeval it_value; |
| }; |
| |
| int getitimer (int, struct itimerval *); |
| int setitimer (int, const struct itimerval *__restrict, struct itimerval *__restrict); |
| int utimes (const char *, const struct timeval [2]); |
| |
| #endif |
| |
| #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) |
| int futimes(int, const struct timeval [2]); |
| int lutimes(const char *, const struct timeval [2]); |
| int settimeofday (const struct timeval *, void *); |
| int adjtime (const struct timeval *, struct timeval *); |
| struct timezone { |
| int tz_minuteswest; |
| int tz_dsttime; |
| }; |
| #define timerisset(t) ((t)->tv_sec || (t)->tv_usec) |
| #define timerclear(t) ((t)->tv_sec = (t)->tv_usec = 0) |
| #define timercmp(s,t,op) ((s)->tv_sec == (t)->tv_sec ? \ |
| (s)->tv_usec op (t)->tv_usec : (s)->tv_sec op (t)->tv_sec) |
| #define timeradd(s,t,a) ( (a)->tv_sec = (s)->tv_sec + (t)->tv_sec, \ |
| ((a)->tv_usec = (s)->tv_usec + (t)->tv_usec) >= 1000000 && \ |
| ((a)->tv_usec -= 1000000, (a)->tv_sec++) ) |
| #define timersub(s,t,a) ( (a)->tv_sec = (s)->tv_sec - (t)->tv_sec, \ |
| ((a)->tv_usec = (s)->tv_usec - (t)->tv_usec) < 0 && \ |
| ((a)->tv_usec += 1000000, (a)->tv_sec--) ) |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif |