X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ftimespec.h;h=872cbb76e3765261d4f4fbd191ad26f8c3ee8900;hb=46f5f314f34a08c9305758482d7d2fdb0e999d09;hp=071f3a1fbc437a1d0f7918b7d9c49d38042b4efe;hpb=1a37ff9e61f483132e7734f929e6675b1651a647;p=gnulib.git diff --git a/lib/timespec.h b/lib/timespec.h index 071f3a1fb..872cbb76e 100644 --- a/lib/timespec.h +++ b/lib/timespec.h @@ -1,6 +1,6 @@ /* timespec -- System time interface - Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2011 Free Software + Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2014 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify @@ -21,6 +21,31 @@ # include +#ifndef _GL_INLINE_HEADER_BEGIN + #error "Please include config.h first." +#endif +_GL_INLINE_HEADER_BEGIN +#ifndef _GL_TIMESPEC_INLINE +# define _GL_TIMESPEC_INLINE _GL_INLINE +#endif + +/* Resolution of timespec time stamps (in units per second), and log + base 10 of the resolution. */ + +enum { TIMESPEC_RESOLUTION = 1000000000 }; +enum { LOG10_TIMESPEC_RESOLUTION = 9 }; + +/* Return a timespec with seconds S and nanoseconds NS. */ + +_GL_TIMESPEC_INLINE struct timespec +make_timespec (time_t s, long int ns) +{ + struct timespec r; + r.tv_sec = s; + r.tv_nsec = ns; + return r; +} + /* Return negative, zero, positive if A < B, A == B, A > B, respectively. For each time stamp T, this code assumes that either: @@ -49,7 +74,7 @@ The (int) cast avoids a gcc -Wconversion warning. */ -static inline int +_GL_TIMESPEC_INLINE int timespec_cmp (struct timespec a, struct timespec b) { return (a.tv_sec < b.tv_sec ? -1 @@ -59,14 +84,21 @@ timespec_cmp (struct timespec a, struct timespec b) /* Return -1, 0, 1, depending on the sign of A. A.tv_nsec must be nonnegative. */ -static inline int +_GL_TIMESPEC_INLINE int timespec_sign (struct timespec a) { return a.tv_sec < 0 ? -1 : a.tv_sec || a.tv_nsec; } +struct timespec timespec_add (struct timespec, struct timespec) + _GL_ATTRIBUTE_CONST; +struct timespec timespec_sub (struct timespec, struct timespec) + _GL_ATTRIBUTE_CONST; +struct timespec dtotimespec (double) + _GL_ATTRIBUTE_CONST; + /* Return an approximation to A, of type 'double'. */ -static inline double +_GL_TIMESPEC_INLINE double timespectod (struct timespec a) { return a.tv_sec + a.tv_nsec / 1e9; @@ -75,4 +107,6 @@ timespectod (struct timespec a) void gettime (struct timespec *); int settime (struct timespec const *); +_GL_INLINE_HEADER_END + #endif