Hello, I did some further investigation: - FreeBSD provides NetBSD's src/syc/dev/clock_subr.h as /usr/include/sys/clock.h - OpenBSD merged src/sys/dev/clock_subr.h with src/sys/sys/time.h [2] - Linux kernel nothing (?) - Tru64 as mentioned before, clock.h inside several paths: include/alpha/clock.h include/machine/clock.h include/sys/machine/clock.h sys/include/arch/alpha/clock.h sys/include/machine/clock.h sys/include/sys/machine/clock.h
My proposition is to go for a new file src/sys/sys/clock.h. Normalize naming with /usr/include/tzfile.h, then uniformly export the file for reuse across the kernel. #define SECSPERMIN 60L #define MINSPERHOUR 60L #define HOURSPERDAY 24L #define DAYSPERWEEK 7L #define DAYSPERNYEAR 365L #define DAYSPERLYEAR 366L #define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) #define SECSPERDAY (SECSPERHOUR * HOURSPERDAY) #define MONSPERYEAR 12L #define EPOCH_YEAR 1970L + macros/defines of leap-year macro, weak-of-day etc. Maybe avoid name-clashes with tzfile.h and go for SECSMIN etc.? What do you think? Is it worth adding? Thanks in advance, [1] http://fxr.watson.org/fxr/source/sys/clock.h [2] http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/sys/time.h.diff?r1=1.22&r2=1.23&f=h
