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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [sys/] [linux_time.h] - Rev 859
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#ifndef _LINUX_TIME_H #define _LINUX_TIME_H #include <asm/param.h> #include <sys/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; } #ifndef _STRUCT_TIMEVAL #define _STRUCT_TIMEVAL struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec; /* microseconds */ }; #endif struct timezone { int tz_minuteswest; /* minutes west of Greenwich */ int tz_dsttime; /* type of dst correction */ }; #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
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