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- #ifndef _LINUX_TIME_H
- #define _LINUX_TIME_H
-
- #include <asm/param.h>
- #include <linux/types.h>
-
- #ifndef _STRUCT_TIMESPEC
- #define _STRUCT_TIMESPEC
- struct timespec {
- time_t tv_sec; /* seconds */
- long tv_nsec; /* nanoseconds */
- };
- #endif /* _STRUCT_TIMESPEC */
-
- /*
- * Change timeval to jiffies, trying to avoid the
- * most obvious overflows..
- *
- * And some not so obvious.
- *
- * Note that we don't want to return MAX_LONG, because
- * for various timeout reasons we often end up having
- * to wait "jiffies+1" in order to guarantee that we wait
- * at _least_ "jiffies" - so "jiffies+1" had better still
- * be positive.
- */
- #define MAX_JIFFY_OFFSET ((~0UL >> 1)-1)
-
- static __inline__ unsigned long
- timespec_to_jiffies(struct timespec *value)
- {
- unsigned long sec = value->tv_sec;
- long nsec = value->tv_nsec;
-
- if (sec >= (MAX_JIFFY_OFFSET / HZ))
- return MAX_JIFFY_OFFSET;
- nsec += 1000000000L / HZ - 1;
- nsec /= 1000000000L / HZ;
- return HZ * sec + nsec;
- }
-
- static __inline__ void
- jiffies_to_timespec(unsigned long jiffies, struct timespec *value)
- {
- value->tv_nsec = (jiffies % HZ) * (1000000000L / HZ);
- value->tv_sec = jiffies / HZ;
- }
-
- struct timeval {
- time_t tv_sec; /* seconds */
- suseconds_t tv_usec; /* microseconds */
- };
-
- struct timezone {
- int tz_minuteswest; /* minutes west of Greenwich */
- int tz_dsttime; /* type of dst correction */
- };
-
- #define NFDBITS __NFDBITS
-
- #ifdef __KERNEL__
- extern void do_gettimeofday(struct timeval *tv);
- extern void do_settimeofday(struct timeval *tv);
- extern void get_fast_time(struct timeval *tv);
- extern void (*do_get_fast_time)(struct timeval *);
- #endif
-
- #define FD_SETSIZE __FD_SETSIZE
- #define FD_SET(fd,fdsetp) __FD_SET(fd,fdsetp)
- #define FD_CLR(fd,fdsetp) __FD_CLR(fd,fdsetp)
- #define FD_ISSET(fd,fdsetp) __FD_ISSET(fd,fdsetp)
- #define FD_ZERO(fdsetp) __FD_ZERO(fdsetp)
-
- /*
- * Names of the interval timers, and structure
- * defining a timer setting.
- */
- #define ITIMER_REAL 0
- #define ITIMER_VIRTUAL 1
- #define ITIMER_PROF 2
-
- struct itimerspec {
- struct timespec it_interval; /* timer period */
- struct timespec it_value; /* timer expiration */
- };
-
- struct itimerval {
- struct timeval it_interval; /* timer interval */
- struct timeval it_value; /* current value */
- };
-
- #endif
-